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crypto: des - split off DES library from generic DES cipher driver

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Another one for the cipher museum: split off DES core processing into
a separate module so other drivers (mostly for crypto accelerators)
can reuse the code without pulling in the generic DES cipher itself.
This will also permit the cipher interface to be made private to the
crypto API itself once we move the only user in the kernel (CIFS) to
this library interface.

Signed-off-by: Ard Biesheuvel <ard.biesheuvel@linaro.org>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
This commit is contained in:
Ard Biesheuvel 2019-08-15 12:01:09 +03:00 committed by Herbert Xu
parent 6b5c481862
commit 04007b0e6c
13 changed files with 1053 additions and 929 deletions
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2
arch/x86/crypto/des3_ede_glue.c
View File

@ -11,7 +11,7 @@
*/
#include <crypto/algapi.h>
#include <crypto/des.h>
#include <crypto/internal/des.h>
#include <crypto/internal/skcipher.h>
#include <linux/crypto.h>
#include <linux/init.h>

8
crypto/Kconfig
View File

@ -1306,9 +1306,13 @@ config CRYPTO_CAST6_AVX_X86_64
This module provides the Cast6 cipher algorithm that processes
eight blocks parallel using the AVX instruction set.
config CRYPTO_LIB_DES
tristate
config CRYPTO_DES
tristate "DES and Triple DES EDE cipher algorithms"
select CRYPTO_ALGAPI
select CRYPTO_LIB_DES
help
DES cipher algorithm (FIPS 46-2), and Triple DES EDE (FIPS 46-3).
@ -1316,7 +1320,7 @@ config CRYPTO_DES_SPARC64
tristate "DES and Triple DES EDE cipher algorithms (SPARC64)"
depends on SPARC64
select CRYPTO_ALGAPI
select CRYPTO_DES
select CRYPTO_LIB_DES
help
DES cipher algorithm (FIPS 46-2), and Triple DES EDE (FIPS 46-3),
optimized using SPARC64 crypto opcodes.
@ -1325,7 +1329,7 @@ config CRYPTO_DES3_EDE_X86_64
tristate "Triple DES EDE cipher algorithm (x86-64)"
depends on X86 && 64BIT
select CRYPTO_BLKCIPHER
select CRYPTO_DES
select CRYPTO_LIB_DES
help
Triple DES EDE (FIPS 46-3) algorithm.

917
crypto/des_generic.c
View File

@ -13,832 +13,42 @@
#include <linux/module.h>
#include <linux/errno.h>
#include <linux/crypto.h>
#include <linux/types.h>
#include <crypto/des.h>
#define ROL(x, r) ((x) = rol32((x), (r)))
#define ROR(x, r) ((x) = ror32((x), (r)))
struct des_ctx {
u32 expkey[DES_EXPKEY_WORDS];
};
struct des3_ede_ctx {
u32 expkey[DES3_EDE_EXPKEY_WORDS];
};
/* Lookup tables for key expansion */
static const u8 pc1[256] = {
0x00, 0x00, 0x40, 0x04, 0x10, 0x10, 0x50, 0x14,
0x04, 0x40, 0x44, 0x44, 0x14, 0x50, 0x54, 0x54,
0x02, 0x02, 0x42, 0x06, 0x12, 0x12, 0x52, 0x16,
0x06, 0x42, 0x46, 0x46, 0x16, 0x52, 0x56, 0x56,
0x80, 0x08, 0xc0, 0x0c, 0x90, 0x18, 0xd0, 0x1c,
0x84, 0x48, 0xc4, 0x4c, 0x94, 0x58, 0xd4, 0x5c,
0x82, 0x0a, 0xc2, 0x0e, 0x92, 0x1a, 0xd2, 0x1e,
0x86, 0x4a, 0xc6, 0x4e, 0x96, 0x5a, 0xd6, 0x5e,
0x20, 0x20, 0x60, 0x24, 0x30, 0x30, 0x70, 0x34,
0x24, 0x60, 0x64, 0x64, 0x34, 0x70, 0x74, 0x74,
0x22, 0x22, 0x62, 0x26, 0x32, 0x32, 0x72, 0x36,
0x26, 0x62, 0x66, 0x66, 0x36, 0x72, 0x76, 0x76,
0xa0, 0x28, 0xe0, 0x2c, 0xb0, 0x38, 0xf0, 0x3c,
0xa4, 0x68, 0xe4, 0x6c, 0xb4, 0x78, 0xf4, 0x7c,
0xa2, 0x2a, 0xe2, 0x2e, 0xb2, 0x3a, 0xf2, 0x3e,
0xa6, 0x6a, 0xe6, 0x6e, 0xb6, 0x7a, 0xf6, 0x7e,
0x08, 0x80, 0x48, 0x84, 0x18, 0x90, 0x58, 0x94,
0x0c, 0xc0, 0x4c, 0xc4, 0x1c, 0xd0, 0x5c, 0xd4,
0x0a, 0x82, 0x4a, 0x86, 0x1a, 0x92, 0x5a, 0x96,
0x0e, 0xc2, 0x4e, 0xc6, 0x1e, 0xd2, 0x5e, 0xd6,
0x88, 0x88, 0xc8, 0x8c, 0x98, 0x98, 0xd8, 0x9c,
0x8c, 0xc8, 0xcc, 0xcc, 0x9c, 0xd8, 0xdc, 0xdc,
0x8a, 0x8a, 0xca, 0x8e, 0x9a, 0x9a, 0xda, 0x9e,
0x8e, 0xca, 0xce, 0xce, 0x9e, 0xda, 0xde, 0xde,
0x28, 0xa0, 0x68, 0xa4, 0x38, 0xb0, 0x78, 0xb4,
0x2c, 0xe0, 0x6c, 0xe4, 0x3c, 0xf0, 0x7c, 0xf4,
0x2a, 0xa2, 0x6a, 0xa6, 0x3a, 0xb2, 0x7a, 0xb6,
0x2e, 0xe2, 0x6e, 0xe6, 0x3e, 0xf2, 0x7e, 0xf6,
0xa8, 0xa8, 0xe8, 0xac, 0xb8, 0xb8, 0xf8, 0xbc,
0xac, 0xe8, 0xec, 0xec, 0xbc, 0xf8, 0xfc, 0xfc,
0xaa, 0xaa, 0xea, 0xae, 0xba, 0xba, 0xfa, 0xbe,
0xae, 0xea, 0xee, 0xee, 0xbe, 0xfa, 0xfe, 0xfe
};
static const u8 rs[256] = {
0x00, 0x00, 0x80, 0x80, 0x02, 0x02, 0x82, 0x82,
0x04, 0x04, 0x84, 0x84, 0x06, 0x06, 0x86, 0x86,
0x08, 0x08, 0x88, 0x88, 0x0a, 0x0a, 0x8a, 0x8a,
0x0c, 0x0c, 0x8c, 0x8c, 0x0e, 0x0e, 0x8e, 0x8e,
0x10, 0x10, 0x90, 0x90, 0x12, 0x12, 0x92, 0x92,
0x14, 0x14, 0x94, 0x94, 0x16, 0x16, 0x96, 0x96,
0x18, 0x18, 0x98, 0x98, 0x1a, 0x1a, 0x9a, 0x9a,
0x1c, 0x1c, 0x9c, 0x9c, 0x1e, 0x1e, 0x9e, 0x9e,
0x20, 0x20, 0xa0, 0xa0, 0x22, 0x22, 0xa2, 0xa2,
0x24, 0x24, 0xa4, 0xa4, 0x26, 0x26, 0xa6, 0xa6,
0x28, 0x28, 0xa8, 0xa8, 0x2a, 0x2a, 0xaa, 0xaa,
0x2c, 0x2c, 0xac, 0xac, 0x2e, 0x2e, 0xae, 0xae,
0x30, 0x30, 0xb0, 0xb0, 0x32, 0x32, 0xb2, 0xb2,
0x34, 0x34, 0xb4, 0xb4, 0x36, 0x36, 0xb6, 0xb6,
0x38, 0x38, 0xb8, 0xb8, 0x3a, 0x3a, 0xba, 0xba,
0x3c, 0x3c, 0xbc, 0xbc, 0x3e, 0x3e, 0xbe, 0xbe,
0x40, 0x40, 0xc0, 0xc0, 0x42, 0x42, 0xc2, 0xc2,
0x44, 0x44, 0xc4, 0xc4, 0x46, 0x46, 0xc6, 0xc6,
0x48, 0x48, 0xc8, 0xc8, 0x4a, 0x4a, 0xca, 0xca,
0x4c, 0x4c, 0xcc, 0xcc, 0x4e, 0x4e, 0xce, 0xce,
0x50, 0x50, 0xd0, 0xd0, 0x52, 0x52, 0xd2, 0xd2,
0x54, 0x54, 0xd4, 0xd4, 0x56, 0x56, 0xd6, 0xd6,
0x58, 0x58, 0xd8, 0xd8, 0x5a, 0x5a, 0xda, 0xda,
0x5c, 0x5c, 0xdc, 0xdc, 0x5e, 0x5e, 0xde, 0xde,
0x60, 0x60, 0xe0, 0xe0, 0x62, 0x62, 0xe2, 0xe2,
0x64, 0x64, 0xe4, 0xe4, 0x66, 0x66, 0xe6, 0xe6,
0x68, 0x68, 0xe8, 0xe8, 0x6a, 0x6a, 0xea, 0xea,
0x6c, 0x6c, 0xec, 0xec, 0x6e, 0x6e, 0xee, 0xee,
0x70, 0x70, 0xf0, 0xf0, 0x72, 0x72, 0xf2, 0xf2,
0x74, 0x74, 0xf4, 0xf4, 0x76, 0x76, 0xf6, 0xf6,
0x78, 0x78, 0xf8, 0xf8, 0x7a, 0x7a, 0xfa, 0xfa,
0x7c, 0x7c, 0xfc, 0xfc, 0x7e, 0x7e, 0xfe, 0xfe
};
static const u32 pc2[1024] = {
0x00000000, 0x00000000, 0x00000000, 0x00000000,
0x00040000, 0x00000000, 0x04000000, 0x00100000,
0x00400000, 0x00000008, 0x00000800, 0x40000000,
0x00440000, 0x00000008, 0x04000800, 0x40100000,
0x00000400, 0x00000020, 0x08000000, 0x00000100,
0x00040400, 0x00000020, 0x0c000000, 0x00100100,
0x00400400, 0x00000028, 0x08000800, 0x40000100,
0x00440400, 0x00000028, 0x0c000800, 0x40100100,
0x80000000, 0x00000010, 0x00000000, 0x00800000,
0x80040000, 0x00000010, 0x04000000, 0x00900000,
0x80400000, 0x00000018, 0x00000800, 0x40800000,
0x80440000, 0x00000018, 0x04000800, 0x40900000,
0x80000400, 0x00000030, 0x08000000, 0x00800100,
0x80040400, 0x00000030, 0x0c000000, 0x00900100,
0x80400400, 0x00000038, 0x08000800, 0x40800100,
0x80440400, 0x00000038, 0x0c000800, 0x40900100,
0x10000000, 0x00000000, 0x00200000, 0x00001000,
0x10040000, 0x00000000, 0x04200000, 0x00101000,
0x10400000, 0x00000008, 0x00200800, 0x40001000,
0x10440000, 0x00000008, 0x04200800, 0x40101000,
0x10000400, 0x00000020, 0x08200000, 0x00001100,
0x10040400, 0x00000020, 0x0c200000, 0x00101100,
0x10400400, 0x00000028, 0x08200800, 0x40001100,
0x10440400, 0x00000028, 0x0c200800, 0x40101100,
0x90000000, 0x00000010, 0x00200000, 0x00801000,
0x90040000, 0x00000010, 0x04200000, 0x00901000,
0x90400000, 0x00000018, 0x00200800, 0x40801000,
0x90440000, 0x00000018, 0x04200800, 0x40901000,
0x90000400, 0x00000030, 0x08200000, 0x00801100,
0x90040400, 0x00000030, 0x0c200000, 0x00901100,
0x90400400, 0x00000038, 0x08200800, 0x40801100,
0x90440400, 0x00000038, 0x0c200800, 0x40901100,
0x00000200, 0x00080000, 0x00000000, 0x00000004,
0x00040200, 0x00080000, 0x04000000, 0x00100004,
0x00400200, 0x00080008, 0x00000800, 0x40000004,
0x00440200, 0x00080008, 0x04000800, 0x40100004,
0x00000600, 0x00080020, 0x08000000, 0x00000104,
0x00040600, 0x00080020, 0x0c000000, 0x00100104,
0x00400600, 0x00080028, 0x08000800, 0x40000104,
0x00440600, 0x00080028, 0x0c000800, 0x40100104,
0x80000200, 0x00080010, 0x00000000, 0x00800004,
0x80040200, 0x00080010, 0x04000000, 0x00900004,
0x80400200, 0x00080018, 0x00000800, 0x40800004,
0x80440200, 0x00080018, 0x04000800, 0x40900004,
0x80000600, 0x00080030, 0x08000000, 0x00800104,
0x80040600, 0x00080030, 0x0c000000, 0x00900104,
0x80400600, 0x00080038, 0x08000800, 0x40800104,
0x80440600, 0x00080038, 0x0c000800, 0x40900104,
0x10000200, 0x00080000, 0x00200000, 0x00001004,
0x10040200, 0x00080000, 0x04200000, 0x00101004,
0x10400200, 0x00080008, 0x00200800, 0x40001004,
0x10440200, 0x00080008, 0x04200800, 0x40101004,
0x10000600, 0x00080020, 0x08200000, 0x00001104,
0x10040600, 0x00080020, 0x0c200000, 0x00101104,
0x10400600, 0x00080028, 0x08200800, 0x40001104,
0x10440600, 0x00080028, 0x0c200800, 0x40101104,
0x90000200, 0x00080010, 0x00200000, 0x00801004,
0x90040200, 0x00080010, 0x04200000, 0x00901004,
0x90400200, 0x00080018, 0x00200800, 0x40801004,
0x90440200, 0x00080018, 0x04200800, 0x40901004,
0x90000600, 0x00080030, 0x08200000, 0x00801104,
0x90040600, 0x00080030, 0x0c200000, 0x00901104,
0x90400600, 0x00080038, 0x08200800, 0x40801104,
0x90440600, 0x00080038, 0x0c200800, 0x40901104,
0x00000002, 0x00002000, 0x20000000, 0x00000001,
0x00040002, 0x00002000, 0x24000000, 0x00100001,
0x00400002, 0x00002008, 0x20000800, 0x40000001,
0x00440002, 0x00002008, 0x24000800, 0x40100001,
0x00000402, 0x00002020, 0x28000000, 0x00000101,
0x00040402, 0x00002020, 0x2c000000, 0x00100101,
0x00400402, 0x00002028, 0x28000800, 0x40000101,
0x00440402, 0x00002028, 0x2c000800, 0x40100101,
0x80000002, 0x00002010, 0x20000000, 0x00800001,
0x80040002, 0x00002010, 0x24000000, 0x00900001,
0x80400002, 0x00002018, 0x20000800, 0x40800001,
0x80440002, 0x00002018, 0x24000800, 0x40900001,
0x80000402, 0x00002030, 0x28000000, 0x00800101,
0x80040402, 0x00002030, 0x2c000000, 0x00900101,
0x80400402, 0x00002038, 0x28000800, 0x40800101,
0x80440402, 0x00002038, 0x2c000800, 0x40900101,
0x10000002, 0x00002000, 0x20200000, 0x00001001,
0x10040002, 0x00002000, 0x24200000, 0x00101001,
0x10400002, 0x00002008, 0x20200800, 0x40001001,
0x10440002, 0x00002008, 0x24200800, 0x40101001,
0x10000402, 0x00002020, 0x28200000, 0x00001101,
0x10040402, 0x00002020, 0x2c200000, 0x00101101,
0x10400402, 0x00002028, 0x28200800, 0x40001101,
0x10440402, 0x00002028, 0x2c200800, 0x40101101,
0x90000002, 0x00002010, 0x20200000, 0x00801001,
0x90040002, 0x00002010, 0x24200000, 0x00901001,
0x90400002, 0x00002018, 0x20200800, 0x40801001,
0x90440002, 0x00002018, 0x24200800, 0x40901001,
0x90000402, 0x00002030, 0x28200000, 0x00801101,
0x90040402, 0x00002030, 0x2c200000, 0x00901101,
0x90400402, 0x00002038, 0x28200800, 0x40801101,
0x90440402, 0x00002038, 0x2c200800, 0x40901101,
0x00000202, 0x00082000, 0x20000000, 0x00000005,
0x00040202, 0x00082000, 0x24000000, 0x00100005,
0x00400202, 0x00082008, 0x20000800, 0x40000005,
0x00440202, 0x00082008, 0x24000800, 0x40100005,
0x00000602, 0x00082020, 0x28000000, 0x00000105,
0x00040602, 0x00082020, 0x2c000000, 0x00100105,
0x00400602, 0x00082028, 0x28000800, 0x40000105,
0x00440602, 0x00082028, 0x2c000800, 0x40100105,
0x80000202, 0x00082010, 0x20000000, 0x00800005,
0x80040202, 0x00082010, 0x24000000, 0x00900005,
0x80400202, 0x00082018, 0x20000800, 0x40800005,
0x80440202, 0x00082018, 0x24000800, 0x40900005,
0x80000602, 0x00082030, 0x28000000, 0x00800105,
0x80040602, 0x00082030, 0x2c000000, 0x00900105,
0x80400602, 0x00082038, 0x28000800, 0x40800105,
0x80440602, 0x00082038, 0x2c000800, 0x40900105,
0x10000202, 0x00082000, 0x20200000, 0x00001005,
0x10040202, 0x00082000, 0x24200000, 0x00101005,
0x10400202, 0x00082008, 0x20200800, 0x40001005,
0x10440202, 0x00082008, 0x24200800, 0x40101005,
0x10000602, 0x00082020, 0x28200000, 0x00001105,
0x10040602, 0x00082020, 0x2c200000, 0x00101105,
0x10400602, 0x00082028, 0x28200800, 0x40001105,
0x10440602, 0x00082028, 0x2c200800, 0x40101105,
0x90000202, 0x00082010, 0x20200000, 0x00801005,
0x90040202, 0x00082010, 0x24200000, 0x00901005,
0x90400202, 0x00082018, 0x20200800, 0x40801005,
0x90440202, 0x00082018, 0x24200800, 0x40901005,
0x90000602, 0x00082030, 0x28200000, 0x00801105,
0x90040602, 0x00082030, 0x2c200000, 0x00901105,
0x90400602, 0x00082038, 0x28200800, 0x40801105,
0x90440602, 0x00082038, 0x2c200800, 0x40901105,
0x00000000, 0x00000000, 0x00000000, 0x00000000,
0x00000000, 0x00000008, 0x00080000, 0x10000000,
0x02000000, 0x00000000, 0x00000080, 0x00001000,
0x02000000, 0x00000008, 0x00080080, 0x10001000,
0x00004000, 0x00000000, 0x00000040, 0x00040000,
0x00004000, 0x00000008, 0x00080040, 0x10040000,
0x02004000, 0x00000000, 0x000000c0, 0x00041000,
0x02004000, 0x00000008, 0x000800c0, 0x10041000,
0x00020000, 0x00008000, 0x08000000, 0x00200000,
0x00020000, 0x00008008, 0x08080000, 0x10200000,
0x02020000, 0x00008000, 0x08000080, 0x00201000,
0x02020000, 0x00008008, 0x08080080, 0x10201000,
0x00024000, 0x00008000, 0x08000040, 0x00240000,
0x00024000, 0x00008008, 0x08080040, 0x10240000,
0x02024000, 0x00008000, 0x080000c0, 0x00241000,
0x02024000, 0x00008008, 0x080800c0, 0x10241000,
0x00000000, 0x01000000, 0x00002000, 0x00000020,
0x00000000, 0x01000008, 0x00082000, 0x10000020,
0x02000000, 0x01000000, 0x00002080, 0x00001020,
0x02000000, 0x01000008, 0x00082080, 0x10001020,
0x00004000, 0x01000000, 0x00002040, 0x00040020,
0x00004000, 0x01000008, 0x00082040, 0x10040020,
0x02004000, 0x01000000, 0x000020c0, 0x00041020,
0x02004000, 0x01000008, 0x000820c0, 0x10041020,
0x00020000, 0x01008000, 0x08002000, 0x00200020,
0x00020000, 0x01008008, 0x08082000, 0x10200020,
0x02020000, 0x01008000, 0x08002080, 0x00201020,
0x02020000, 0x01008008, 0x08082080, 0x10201020,
0x00024000, 0x01008000, 0x08002040, 0x00240020,
0x00024000, 0x01008008, 0x08082040, 0x10240020,
0x02024000, 0x01008000, 0x080020c0, 0x00241020,
0x02024000, 0x01008008, 0x080820c0, 0x10241020,
0x00000400, 0x04000000, 0x00100000, 0x00000004,
0x00000400, 0x04000008, 0x00180000, 0x10000004,
0x02000400, 0x04000000, 0x00100080, 0x00001004,
0x02000400, 0x04000008, 0x00180080, 0x10001004,
0x00004400, 0x04000000, 0x00100040, 0x00040004,
0x00004400, 0x04000008, 0x00180040, 0x10040004,
0x02004400, 0x04000000, 0x001000c0, 0x00041004,
0x02004400, 0x04000008, 0x001800c0, 0x10041004,
0x00020400, 0x04008000, 0x08100000, 0x00200004,
0x00020400, 0x04008008, 0x08180000, 0x10200004,
0x02020400, 0x04008000, 0x08100080, 0x00201004,
0x02020400, 0x04008008, 0x08180080, 0x10201004,
0x00024400, 0x04008000, 0x08100040, 0x00240004,
0x00024400, 0x04008008, 0x08180040, 0x10240004,
0x02024400, 0x04008000, 0x081000c0, 0x00241004,
0x02024400, 0x04008008, 0x081800c0, 0x10241004,
0x00000400, 0x05000000, 0x00102000, 0x00000024,
0x00000400, 0x05000008, 0x00182000, 0x10000024,
0x02000400, 0x05000000, 0x00102080, 0x00001024,
0x02000400, 0x05000008, 0x00182080, 0x10001024,
0x00004400, 0x05000000, 0x00102040, 0x00040024,
0x00004400, 0x05000008, 0x00182040, 0x10040024,
0x02004400, 0x05000000, 0x001020c0, 0x00041024,
0x02004400, 0x05000008, 0x001820c0, 0x10041024,
0x00020400, 0x05008000, 0x08102000, 0x00200024,
0x00020400, 0x05008008, 0x08182000, 0x10200024,
0x02020400, 0x05008000, 0x08102080, 0x00201024,
0x02020400, 0x05008008, 0x08182080, 0x10201024,
0x00024400, 0x05008000, 0x08102040, 0x00240024,
0x00024400, 0x05008008, 0x08182040, 0x10240024,
0x02024400, 0x05008000, 0x081020c0, 0x00241024,
0x02024400, 0x05008008, 0x081820c0, 0x10241024,
0x00000800, 0x00010000, 0x20000000, 0x00000010,
0x00000800, 0x00010008, 0x20080000, 0x10000010,
0x02000800, 0x00010000, 0x20000080, 0x00001010,
0x02000800, 0x00010008, 0x20080080, 0x10001010,
0x00004800, 0x00010000, 0x20000040, 0x00040010,
0x00004800, 0x00010008, 0x20080040, 0x10040010,
0x02004800, 0x00010000, 0x200000c0, 0x00041010,
0x02004800, 0x00010008, 0x200800c0, 0x10041010,
0x00020800, 0x00018000, 0x28000000, 0x00200010,
0x00020800, 0x00018008, 0x28080000, 0x10200010,
0x02020800, 0x00018000, 0x28000080, 0x00201010,
0x02020800, 0x00018008, 0x28080080, 0x10201010,
0x00024800, 0x00018000, 0x28000040, 0x00240010,
0x00024800, 0x00018008, 0x28080040, 0x10240010,
0x02024800, 0x00018000, 0x280000c0, 0x00241010,
0x02024800, 0x00018008, 0x280800c0, 0x10241010,
0x00000800, 0x01010000, 0x20002000, 0x00000030,
0x00000800, 0x01010008, 0x20082000, 0x10000030,
0x02000800, 0x01010000, 0x20002080, 0x00001030,
0x02000800, 0x01010008, 0x20082080, 0x10001030,
0x00004800, 0x01010000, 0x20002040, 0x00040030,
0x00004800, 0x01010008, 0x20082040, 0x10040030,
0x02004800, 0x01010000, 0x200020c0, 0x00041030,
0x02004800, 0x01010008, 0x200820c0, 0x10041030,
0x00020800, 0x01018000, 0x28002000, 0x00200030,
0x00020800, 0x01018008, 0x28082000, 0x10200030,
0x02020800, 0x01018000, 0x28002080, 0x00201030,
0x02020800, 0x01018008, 0x28082080, 0x10201030,
0x00024800, 0x01018000, 0x28002040, 0x00240030,
0x00024800, 0x01018008, 0x28082040, 0x10240030,
0x02024800, 0x01018000, 0x280020c0, 0x00241030,
0x02024800, 0x01018008, 0x280820c0, 0x10241030,
0x00000c00, 0x04010000, 0x20100000, 0x00000014,
0x00000c00, 0x04010008, 0x20180000, 0x10000014,
0x02000c00, 0x04010000, 0x20100080, 0x00001014,
0x02000c00, 0x04010008, 0x20180080, 0x10001014,
0x00004c00, 0x04010000, 0x20100040, 0x00040014,
0x00004c00, 0x04010008, 0x20180040, 0x10040014,
0x02004c00, 0x04010000, 0x201000c0, 0x00041014,
0x02004c00, 0x04010008, 0x201800c0, 0x10041014,
0x00020c00, 0x04018000, 0x28100000, 0x00200014,
0x00020c00, 0x04018008, 0x28180000, 0x10200014,
0x02020c00, 0x04018000, 0x28100080, 0x00201014,
0x02020c00, 0x04018008, 0x28180080, 0x10201014,
0x00024c00, 0x04018000, 0x28100040, 0x00240014,
0x00024c00, 0x04018008, 0x28180040, 0x10240014,
0x02024c00, 0x04018000, 0x281000c0, 0x00241014,
0x02024c00, 0x04018008, 0x281800c0, 0x10241014,
0x00000c00, 0x05010000, 0x20102000, 0x00000034,
0x00000c00, 0x05010008, 0x20182000, 0x10000034,
0x02000c00, 0x05010000, 0x20102080, 0x00001034,
0x02000c00, 0x05010008, 0x20182080, 0x10001034,
0x00004c00, 0x05010000, 0x20102040, 0x00040034,
0x00004c00, 0x05010008, 0x20182040, 0x10040034,
0x02004c00, 0x05010000, 0x201020c0, 0x00041034,
0x02004c00, 0x05010008, 0x201820c0, 0x10041034,
0x00020c00, 0x05018000, 0x28102000, 0x00200034,
0x00020c00, 0x05018008, 0x28182000, 0x10200034,
0x02020c00, 0x05018000, 0x28102080, 0x00201034,
0x02020c00, 0x05018008, 0x28182080, 0x10201034,
0x00024c00, 0x05018000, 0x28102040, 0x00240034,
0x00024c00, 0x05018008, 0x28182040, 0x10240034,
0x02024c00, 0x05018000, 0x281020c0, 0x00241034,
0x02024c00, 0x05018008, 0x281820c0, 0x10241034
};
/* S-box lookup tables */
static const u32 S1[64] = {
0x01010400, 0x00000000, 0x00010000, 0x01010404,
0x01010004, 0x00010404, 0x00000004, 0x00010000,
0x00000400, 0x01010400, 0x01010404, 0x00000400,
0x01000404, 0x01010004, 0x01000000, 0x00000004,
0x00000404, 0x01000400, 0x01000400, 0x00010400,
0x00010400, 0x01010000, 0x01010000, 0x01000404,
0x00010004, 0x01000004, 0x01000004, 0x00010004,
0x00000000, 0x00000404, 0x00010404, 0x01000000,
0x00010000, 0x01010404, 0x00000004, 0x01010000,
0x01010400, 0x01000000, 0x01000000, 0x00000400,
0x01010004, 0x00010000, 0x00010400, 0x01000004,
0x00000400, 0x00000004, 0x01000404, 0x00010404,
0x01010404, 0x00010004, 0x01010000, 0x01000404,
0x01000004, 0x00000404, 0x00010404, 0x01010400,
0x00000404, 0x01000400, 0x01000400, 0x00000000,
0x00010004, 0x00010400, 0x00000000, 0x01010004
};
static const u32 S2[64] = {
0x80108020, 0x80008000, 0x00008000, 0x00108020,
0x00100000, 0x00000020, 0x80100020, 0x80008020,
0x80000020, 0x80108020, 0x80108000, 0x80000000,
0x80008000, 0x00100000, 0x00000020, 0x80100020,
0x00108000, 0x00100020, 0x80008020, 0x00000000,
0x80000000, 0x00008000, 0x00108020, 0x80100000,
0x00100020, 0x80000020, 0x00000000, 0x00108000,
0x00008020, 0x80108000, 0x80100000, 0x00008020,
0x00000000, 0x00108020, 0x80100020, 0x00100000,
0x80008020, 0x80100000, 0x80108000, 0x00008000,
0x80100000, 0x80008000, 0x00000020, 0x80108020,
0x00108020, 0x00000020, 0x00008000, 0x80000000,
0x00008020, 0x80108000, 0x00100000, 0x80000020,
0x00100020, 0x80008020, 0x80000020, 0x00100020,
0x00108000, 0x00000000, 0x80008000, 0x00008020,
0x80000000, 0x80100020, 0x80108020, 0x00108000
};
static const u32 S3[64] = {
0x00000208, 0x08020200, 0x00000000, 0x08020008,
0x08000200, 0x00000000, 0x00020208, 0x08000200,
0x00020008, 0x08000008, 0x08000008, 0x00020000,
0x08020208, 0x00020008, 0x08020000, 0x00000208,
0x08000000, 0x00000008, 0x08020200, 0x00000200,
0x00020200, 0x08020000, 0x08020008, 0x00020208,
0x08000208, 0x00020200, 0x00020000, 0x08000208,
0x00000008, 0x08020208, 0x00000200, 0x08000000,
0x08020200, 0x08000000, 0x00020008, 0x00000208,
0x00020000, 0x08020200, 0x08000200, 0x00000000,
0x00000200, 0x00020008, 0x08020208, 0x08000200,
0x08000008, 0x00000200, 0x00000000, 0x08020008,
0x08000208, 0x00020000, 0x08000000, 0x08020208,
0x00000008, 0x00020208, 0x00020200, 0x08000008,
0x08020000, 0x08000208, 0x00000208, 0x08020000,
0x00020208, 0x00000008, 0x08020008, 0x00020200
};
static const u32 S4[64] = {
0x00802001, 0x00002081, 0x00002081, 0x00000080,
0x00802080, 0x00800081, 0x00800001, 0x00002001,
0x00000000, 0x00802000, 0x00802000, 0x00802081,
0x00000081, 0x00000000, 0x00800080, 0x00800001,
0x00000001, 0x00002000, 0x00800000, 0x00802001,
0x00000080, 0x00800000, 0x00002001, 0x00002080,
0x00800081, 0x00000001, 0x00002080, 0x00800080,
0x00002000, 0x00802080, 0x00802081, 0x00000081,
0x00800080, 0x00800001, 0x00802000, 0x00802081,
0x00000081, 0x00000000, 0x00000000, 0x00802000,
0x00002080, 0x00800080, 0x00800081, 0x00000001,
0x00802001, 0x00002081, 0x00002081, 0x00000080,
0x00802081, 0x00000081, 0x00000001, 0x00002000,
0x00800001, 0x00002001, 0x00802080, 0x00800081,
0x00002001, 0x00002080, 0x00800000, 0x00802001,
0x00000080, 0x00800000, 0x00002000, 0x00802080
};
static const u32 S5[64] = {
0x00000100, 0x02080100, 0x02080000, 0x42000100,
0x00080000, 0x00000100, 0x40000000, 0x02080000,
0x40080100, 0x00080000, 0x02000100, 0x40080100,
0x42000100, 0x42080000, 0x00080100, 0x40000000,
0x02000000, 0x40080000, 0x40080000, 0x00000000,
0x40000100, 0x42080100, 0x42080100, 0x02000100,
0x42080000, 0x40000100, 0x00000000, 0x42000000,
0x02080100, 0x02000000, 0x42000000, 0x00080100,
0x00080000, 0x42000100, 0x00000100, 0x02000000,
0x40000000, 0x02080000, 0x42000100, 0x40080100,
0x02000100, 0x40000000, 0x42080000, 0x02080100,
0x40080100, 0x00000100, 0x02000000, 0x42080000,
0x42080100, 0x00080100, 0x42000000, 0x42080100,
0x02080000, 0x00000000, 0x40080000, 0x42000000,
0x00080100, 0x02000100, 0x40000100, 0x00080000,
0x00000000, 0x40080000, 0x02080100, 0x40000100
};
static const u32 S6[64] = {
0x20000010, 0x20400000, 0x00004000, 0x20404010,
0x20400000, 0x00000010, 0x20404010, 0x00400000,
0x20004000, 0x00404010, 0x00400000, 0x20000010,
0x00400010, 0x20004000, 0x20000000, 0x00004010,
0x00000000, 0x00400010, 0x20004010, 0x00004000,
0x00404000, 0x20004010, 0x00000010, 0x20400010,
0x20400010, 0x00000000, 0x00404010, 0x20404000,
0x00004010, 0x00404000, 0x20404000, 0x20000000,
0x20004000, 0x00000010, 0x20400010, 0x00404000,
0x20404010, 0x00400000, 0x00004010, 0x20000010,
0x00400000, 0x20004000, 0x20000000, 0x00004010,
0x20000010, 0x20404010, 0x00404000, 0x20400000,
0x00404010, 0x20404000, 0x00000000, 0x20400010,
0x00000010, 0x00004000, 0x20400000, 0x00404010,
0x00004000, 0x00400010, 0x20004010, 0x00000000,
0x20404000, 0x20000000, 0x00400010, 0x20004010
};
static const u32 S7[64] = {
0x00200000, 0x04200002, 0x04000802, 0x00000000,
0x00000800, 0x04000802, 0x00200802, 0x04200800,
0x04200802, 0x00200000, 0x00000000, 0x04000002,
0x00000002, 0x04000000, 0x04200002, 0x00000802,
0x04000800, 0x00200802, 0x00200002, 0x04000800,
0x04000002, 0x04200000, 0x04200800, 0x00200002,
0x04200000, 0x00000800, 0x00000802, 0x04200802,
0x00200800, 0x00000002, 0x04000000, 0x00200800,
0x04000000, 0x00200800, 0x00200000, 0x04000802,
0x04000802, 0x04200002, 0x04200002, 0x00000002,
0x00200002, 0x04000000, 0x04000800, 0x00200000,
0x04200800, 0x00000802, 0x00200802, 0x04200800,
0x00000802, 0x04000002, 0x04200802, 0x04200000,
0x00200800, 0x00000000, 0x00000002, 0x04200802,
0x00000000, 0x00200802, 0x04200000, 0x00000800,
0x04000002, 0x04000800, 0x00000800, 0x00200002
};
static const u32 S8[64] = {
0x10001040, 0x00001000, 0x00040000, 0x10041040,
0x10000000, 0x10001040, 0x00000040, 0x10000000,
0x00040040, 0x10040000, 0x10041040, 0x00041000,
0x10041000, 0x00041040, 0x00001000, 0x00000040,
0x10040000, 0x10000040, 0x10001000, 0x00001040,
0x00041000, 0x00040040, 0x10040040, 0x10041000,
0x00001040, 0x00000000, 0x00000000, 0x10040040,
0x10000040, 0x10001000, 0x00041040, 0x00040000,
0x00041040, 0x00040000, 0x10041000, 0x00001000,
0x00000040, 0x10040040, 0x00001000, 0x00041040,
0x10001000, 0x00000040, 0x10000040, 0x10040000,
0x10040040, 0x10000000, 0x00040000, 0x10001040,
0x00000000, 0x10041040, 0x00040040, 0x10000040,
0x10040000, 0x10001000, 0x10001040, 0x00000000,
0x10041040, 0x00041000, 0x00041000, 0x00001040,
0x00001040, 0x00040040, 0x10000000, 0x10041000
};
/* Encryption components: IP, FP, and round function */
#define IP(L, R, T) \
ROL(R, 4); \
T = L; \
L ^= R; \
L &= 0xf0f0f0f0; \
R ^= L; \
L ^= T; \
ROL(R, 12); \
T = L; \
L ^= R; \
L &= 0xffff0000; \
R ^= L; \
L ^= T; \
ROR(R, 14); \
T = L; \
L ^= R; \
L &= 0xcccccccc; \
R ^= L; \
L ^= T; \
ROL(R, 6); \
T = L; \
L ^= R; \
L &= 0xff00ff00; \
R ^= L; \
L ^= T; \
ROR(R, 7); \
T = L; \
L ^= R; \
L &= 0xaaaaaaaa; \
R ^= L; \
L ^= T; \
ROL(L, 1);
#define FP(L, R, T) \
ROR(L, 1); \
T = L; \
L ^= R; \
L &= 0xaaaaaaaa; \
R ^= L; \
L ^= T; \
ROL(R, 7); \
T = L; \
L ^= R; \
L &= 0xff00ff00; \
R ^= L; \
L ^= T; \
ROR(R, 6); \
T = L; \
L ^= R; \
L &= 0xcccccccc; \
R ^= L; \
L ^= T; \
ROL(R, 14); \
T = L; \
L ^= R; \
L &= 0xffff0000; \
R ^= L; \
L ^= T; \
ROR(R, 12); \
T = L; \
L ^= R; \
L &= 0xf0f0f0f0; \
R ^= L; \
L ^= T; \
ROR(R, 4);
#define ROUND(L, R, A, B, K, d) \
B = K[0]; A = K[1]; K += d; \
B ^= R; A ^= R; \
B &= 0x3f3f3f3f; ROR(A, 4); \
L ^= S8[0xff & B]; A &= 0x3f3f3f3f; \
L ^= S6[0xff & (B >> 8)]; B >>= 16; \
L ^= S7[0xff & A]; \
L ^= S5[0xff & (A >> 8)]; A >>= 16; \
L ^= S4[0xff & B]; \
L ^= S2[0xff & (B >> 8)]; \
L ^= S3[0xff & A]; \
L ^= S1[0xff & (A >> 8)];
/*
* PC2 lookup tables are organized as 2 consecutive sets of 4 interleaved
* tables of 128 elements. One set is for C_i and the other for D_i, while
* the 4 interleaved tables correspond to four 7-bit subsets of C_i or D_i.
*
* After PC1 each of the variables a,b,c,d contains a 7 bit subset of C_i
* or D_i in bits 7-1 (bit 0 being the least significant).
*/
#define T1(x) pt[2 * (x) + 0]
#define T2(x) pt[2 * (x) + 1]
#define T3(x) pt[2 * (x) + 2]
#define T4(x) pt[2 * (x) + 3]
#define DES_PC2(a, b, c, d) (T4(d) | T3(c) | T2(b) | T1(a))
/*
* Encryption key expansion
*
* RFC2451: Weak key checks SHOULD be performed.
*
* FIPS 74:
*
* Keys having duals are keys which produce all zeros, all ones, or
* alternating zero-one patterns in the C and D registers after Permuted
* Choice 1 has operated on the key.
*
*/
unsigned long des_ekey(u32 *pe, const u8 *k)
{
/* K&R: long is at least 32 bits */
unsigned long a, b, c, d, w;
const u32 *pt = pc2;
d = k[4]; d &= 0x0e; d <<= 4; d |= k[0] & 0x1e; d = pc1[d];
c = k[5]; c &= 0x0e; c <<= 4; c |= k[1] & 0x1e; c = pc1[c];
b = k[6]; b &= 0x0e; b <<= 4; b |= k[2] & 0x1e; b = pc1[b];
a = k[7]; a &= 0x0e; a <<= 4; a |= k[3] & 0x1e; a = pc1[a];
pe[15 * 2 + 0] = DES_PC2(a, b, c, d); d = rs[d];
pe[14 * 2 + 0] = DES_PC2(d, a, b, c); c = rs[c]; b = rs[b];
pe[13 * 2 + 0] = DES_PC2(b, c, d, a); a = rs[a]; d = rs[d];
pe[12 * 2 + 0] = DES_PC2(d, a, b, c); c = rs[c]; b = rs[b];
pe[11 * 2 + 0] = DES_PC2(b, c, d, a); a = rs[a]; d = rs[d];
pe[10 * 2 + 0] = DES_PC2(d, a, b, c); c = rs[c]; b = rs[b];
pe[ 9 * 2 + 0] = DES_PC2(b, c, d, a); a = rs[a]; d = rs[d];
pe[ 8 * 2 + 0] = DES_PC2(d, a, b, c); c = rs[c];
pe[ 7 * 2 + 0] = DES_PC2(c, d, a, b); b = rs[b]; a = rs[a];
pe[ 6 * 2 + 0] = DES_PC2(a, b, c, d); d = rs[d]; c = rs[c];
pe[ 5 * 2 + 0] = DES_PC2(c, d, a, b); b = rs[b]; a = rs[a];
pe[ 4 * 2 + 0] = DES_PC2(a, b, c, d); d = rs[d]; c = rs[c];
pe[ 3 * 2 + 0] = DES_PC2(c, d, a, b); b = rs[b]; a = rs[a];
pe[ 2 * 2 + 0] = DES_PC2(a, b, c, d); d = rs[d]; c = rs[c];
pe[ 1 * 2 + 0] = DES_PC2(c, d, a, b); b = rs[b];
pe[ 0 * 2 + 0] = DES_PC2(b, c, d, a);
/* Check if first half is weak */
w = (a ^ c) | (b ^ d) | (rs[a] ^ c) | (b ^ rs[d]);
/* Skip to next table set */
pt += 512;
d = k[0]; d &= 0xe0; d >>= 4; d |= k[4] & 0xf0; d = pc1[d + 1];
c = k[1]; c &= 0xe0; c >>= 4; c |= k[5] & 0xf0; c = pc1[c + 1];
b = k[2]; b &= 0xe0; b >>= 4; b |= k[6] & 0xf0; b = pc1[b + 1];
a = k[3]; a &= 0xe0; a >>= 4; a |= k[7] & 0xf0; a = pc1[a + 1];
/* Check if second half is weak */
w |= (a ^ c) | (b ^ d) | (rs[a] ^ c) | (b ^ rs[d]);
pe[15 * 2 + 1] = DES_PC2(a, b, c, d); d = rs[d];
pe[14 * 2 + 1] = DES_PC2(d, a, b, c); c = rs[c]; b = rs[b];
pe[13 * 2 + 1] = DES_PC2(b, c, d, a); a = rs[a]; d = rs[d];
pe[12 * 2 + 1] = DES_PC2(d, a, b, c); c = rs[c]; b = rs[b];
pe[11 * 2 + 1] = DES_PC2(b, c, d, a); a = rs[a]; d = rs[d];
pe[10 * 2 + 1] = DES_PC2(d, a, b, c); c = rs[c]; b = rs[b];
pe[ 9 * 2 + 1] = DES_PC2(b, c, d, a); a = rs[a]; d = rs[d];
pe[ 8 * 2 + 1] = DES_PC2(d, a, b, c); c = rs[c];
pe[ 7 * 2 + 1] = DES_PC2(c, d, a, b); b = rs[b]; a = rs[a];
pe[ 6 * 2 + 1] = DES_PC2(a, b, c, d); d = rs[d]; c = rs[c];
pe[ 5 * 2 + 1] = DES_PC2(c, d, a, b); b = rs[b]; a = rs[a];
pe[ 4 * 2 + 1] = DES_PC2(a, b, c, d); d = rs[d]; c = rs[c];
pe[ 3 * 2 + 1] = DES_PC2(c, d, a, b); b = rs[b]; a = rs[a];
pe[ 2 * 2 + 1] = DES_PC2(a, b, c, d); d = rs[d]; c = rs[c];
pe[ 1 * 2 + 1] = DES_PC2(c, d, a, b); b = rs[b];
pe[ 0 * 2 + 1] = DES_PC2(b, c, d, a);
/* Fixup: 2413 5768 -> 1357 2468 */
for (d = 0; d < 16; ++d) {
a = pe[2 * d];
b = pe[2 * d + 1];
c = a ^ b;
c &= 0xffff0000;
a ^= c;
b ^= c;
ROL(b, 18);
pe[2 * d] = a;
pe[2 * d + 1] = b;
}
/* Zero if weak key */
return w;
}
EXPORT_SYMBOL_GPL(des_ekey);
/*
* Decryption key expansion
*
* No weak key checking is performed, as this is only used by triple DES
*
*/
static void dkey(u32 *pe, const u8 *k)
{
/* K&R: long is at least 32 bits */
unsigned long a, b, c, d;
const u32 *pt = pc2;
d = k[4]; d &= 0x0e; d <<= 4; d |= k[0] & 0x1e; d = pc1[d];
c = k[5]; c &= 0x0e; c <<= 4; c |= k[1] & 0x1e; c = pc1[c];
b = k[6]; b &= 0x0e; b <<= 4; b |= k[2] & 0x1e; b = pc1[b];
a = k[7]; a &= 0x0e; a <<= 4; a |= k[3] & 0x1e; a = pc1[a];
pe[ 0 * 2] = DES_PC2(a, b, c, d); d = rs[d];
pe[ 1 * 2] = DES_PC2(d, a, b, c); c = rs[c]; b = rs[b];
pe[ 2 * 2] = DES_PC2(b, c, d, a); a = rs[a]; d = rs[d];
pe[ 3 * 2] = DES_PC2(d, a, b, c); c = rs[c]; b = rs[b];
pe[ 4 * 2] = DES_PC2(b, c, d, a); a = rs[a]; d = rs[d];
pe[ 5 * 2] = DES_PC2(d, a, b, c); c = rs[c]; b = rs[b];
pe[ 6 * 2] = DES_PC2(b, c, d, a); a = rs[a]; d = rs[d];
pe[ 7 * 2] = DES_PC2(d, a, b, c); c = rs[c];
pe[ 8 * 2] = DES_PC2(c, d, a, b); b = rs[b]; a = rs[a];
pe[ 9 * 2] = DES_PC2(a, b, c, d); d = rs[d]; c = rs[c];
pe[10 * 2] = DES_PC2(c, d, a, b); b = rs[b]; a = rs[a];
pe[11 * 2] = DES_PC2(a, b, c, d); d = rs[d]; c = rs[c];
pe[12 * 2] = DES_PC2(c, d, a, b); b = rs[b]; a = rs[a];
pe[13 * 2] = DES_PC2(a, b, c, d); d = rs[d]; c = rs[c];
pe[14 * 2] = DES_PC2(c, d, a, b); b = rs[b];
pe[15 * 2] = DES_PC2(b, c, d, a);
/* Skip to next table set */
pt += 512;
d = k[0]; d &= 0xe0; d >>= 4; d |= k[4] & 0xf0; d = pc1[d + 1];
c = k[1]; c &= 0xe0; c >>= 4; c |= k[5] & 0xf0; c = pc1[c + 1];
b = k[2]; b &= 0xe0; b >>= 4; b |= k[6] & 0xf0; b = pc1[b + 1];
a = k[3]; a &= 0xe0; a >>= 4; a |= k[7] & 0xf0; a = pc1[a + 1];
pe[ 0 * 2 + 1] = DES_PC2(a, b, c, d); d = rs[d];
pe[ 1 * 2 + 1] = DES_PC2(d, a, b, c); c = rs[c]; b = rs[b];
pe[ 2 * 2 + 1] = DES_PC2(b, c, d, a); a = rs[a]; d = rs[d];
pe[ 3 * 2 + 1] = DES_PC2(d, a, b, c); c = rs[c]; b = rs[b];
pe[ 4 * 2 + 1] = DES_PC2(b, c, d, a); a = rs[a]; d = rs[d];
pe[ 5 * 2 + 1] = DES_PC2(d, a, b, c); c = rs[c]; b = rs[b];
pe[ 6 * 2 + 1] = DES_PC2(b, c, d, a); a = rs[a]; d = rs[d];
pe[ 7 * 2 + 1] = DES_PC2(d, a, b, c); c = rs[c];
pe[ 8 * 2 + 1] = DES_PC2(c, d, a, b); b = rs[b]; a = rs[a];
pe[ 9 * 2 + 1] = DES_PC2(a, b, c, d); d = rs[d]; c = rs[c];
pe[10 * 2 + 1] = DES_PC2(c, d, a, b); b = rs[b]; a = rs[a];
pe[11 * 2 + 1] = DES_PC2(a, b, c, d); d = rs[d]; c = rs[c];
pe[12 * 2 + 1] = DES_PC2(c, d, a, b); b = rs[b]; a = rs[a];
pe[13 * 2 + 1] = DES_PC2(a, b, c, d); d = rs[d]; c = rs[c];
pe[14 * 2 + 1] = DES_PC2(c, d, a, b); b = rs[b];
pe[15 * 2 + 1] = DES_PC2(b, c, d, a);
/* Fixup: 2413 5768 -> 1357 2468 */
for (d = 0; d < 16; ++d) {
a = pe[2 * d];
b = pe[2 * d + 1];
c = a ^ b;
c &= 0xffff0000;
a ^= c;
b ^= c;
ROL(b, 18);
pe[2 * d] = a;
pe[2 * d + 1] = b;
}
}
#include <crypto/internal/des.h>
static int des_setkey(struct crypto_tfm *tfm, const u8 *key,
unsigned int keylen)
{
struct des_ctx *dctx = crypto_tfm_ctx(tfm);
u32 *flags = &tfm->crt_flags;
u32 tmp[DES_EXPKEY_WORDS];
int ret;
int err;
/* Expand to tmp */
ret = des_ekey(tmp, key);
if (unlikely(ret == 0) && (*flags & CRYPTO_TFM_REQ_FORBID_WEAK_KEYS)) {
*flags |= CRYPTO_TFM_RES_WEAK_KEY;
return -EINVAL;
err = des_expand_key(dctx, key, keylen);
if (err == -ENOKEY) {
if (crypto_tfm_get_flags(tfm) & CRYPTO_TFM_REQ_FORBID_WEAK_KEYS)
err = -EINVAL;
else
err = 0;
}
/* Copy to output */
memcpy(dctx->expkey, tmp, sizeof(dctx->expkey));
return 0;
if (err) {
memset(dctx, 0, sizeof(*dctx));
crypto_tfm_set_flags(tfm, CRYPTO_TFM_RES_WEAK_KEY);
}
return err;
}
static void des_encrypt(struct crypto_tfm *tfm, u8 *dst, const u8 *src)
static void crypto_des_encrypt(struct crypto_tfm *tfm, u8 *dst, const u8 *src)
{
struct des_ctx *ctx = crypto_tfm_ctx(tfm);
const u32 *K = ctx->expkey;
const __le32 *s = (const __le32 *)src;
__le32 *d = (__le32 *)dst;
u32 L, R, A, B;
int i;
const struct des_ctx *dctx = crypto_tfm_ctx(tfm);
L = le32_to_cpu(s[0]);
R = le32_to_cpu(s[1]);
IP(L, R, A);
for (i = 0; i < 8; i++) {
ROUND(L, R, A, B, K, 2);
ROUND(R, L, A, B, K, 2);
}
FP(R, L, A);
d[0] = cpu_to_le32(R);
d[1] = cpu_to_le32(L);
des_encrypt(dctx, dst, src);
}
static void des_decrypt(struct crypto_tfm *tfm, u8 *dst, const u8 *src)
static void crypto_des_decrypt(struct crypto_tfm *tfm, u8 *dst, const u8 *src)
{
struct des_ctx *ctx = crypto_tfm_ctx(tfm);
const u32 *K = ctx->expkey + DES_EXPKEY_WORDS - 2;
const __le32 *s = (const __le32 *)src;
__le32 *d = (__le32 *)dst;
u32 L, R, A, B;
int i;
const struct des_ctx *dctx = crypto_tfm_ctx(tfm);
L = le32_to_cpu(s[0]);
R = le32_to_cpu(s[1]);
IP(L, R, A);
for (i = 0; i < 8; i++) {
ROUND(L, R, A, B, K, -2);
ROUND(R, L, A, B, K, -2);
}
FP(R, L, A);
d[0] = cpu_to_le32(R);
d[1] = cpu_to_le32(L);
des_decrypt(dctx, dst, src);
}
int __des3_ede_setkey(u32 *expkey, u32 *flags, const u8 *key,
@ -858,76 +68,37 @@ static int des3_ede_setkey(struct crypto_tfm *tfm, const u8 *key,
unsigned int keylen)
{
struct des3_ede_ctx *dctx = crypto_tfm_ctx(tfm);
u32 *expkey = dctx->expkey;
int err;
err = crypto_des3_ede_verify_key(tfm, key);
if (err)
return err;
err = des3_ede_expand_key(dctx, key, keylen);
if (err == -ENOKEY) {
if (crypto_tfm_get_flags(tfm) & CRYPTO_TFM_REQ_FORBID_WEAK_KEYS)
err = -EINVAL;
else
err = 0;
}
return __des3_ede_setkey(expkey, flags, key, keylen);
if (err) {
memset(dctx, 0, sizeof(*dctx));
crypto_tfm_set_flags(tfm, CRYPTO_TFM_RES_WEAK_KEY);
}
return err;
}
static void des3_ede_encrypt(struct crypto_tfm *tfm, u8 *dst, const u8 *src)
static void crypto_des3_ede_encrypt(struct crypto_tfm *tfm, u8 *dst,
const u8 *src)
{
struct des3_ede_ctx *dctx = crypto_tfm_ctx(tfm);
const u32 *K = dctx->expkey;
const __le32 *s = (const __le32 *)src;
__le32 *d = (__le32 *)dst;
u32 L, R, A, B;
int i;
const struct des3_ede_ctx *dctx = crypto_tfm_ctx(tfm);
L = le32_to_cpu(s[0]);
R = le32_to_cpu(s[1]);
IP(L, R, A);
for (i = 0; i < 8; i++) {
ROUND(L, R, A, B, K, 2);
ROUND(R, L, A, B, K, 2);
}
for (i = 0; i < 8; i++) {
ROUND(R, L, A, B, K, 2);
ROUND(L, R, A, B, K, 2);
}
for (i = 0; i < 8; i++) {
ROUND(L, R, A, B, K, 2);
ROUND(R, L, A, B, K, 2);
}
FP(R, L, A);
d[0] = cpu_to_le32(R);
d[1] = cpu_to_le32(L);
des3_ede_encrypt(dctx, dst, src);
}
static void des3_ede_decrypt(struct crypto_tfm *tfm, u8 *dst, const u8 *src)
static void crypto_des3_ede_decrypt(struct crypto_tfm *tfm, u8 *dst,
const u8 *src)
{
struct des3_ede_ctx *dctx = crypto_tfm_ctx(tfm);
const u32 *K = dctx->expkey + DES3_EDE_EXPKEY_WORDS - 2;
const __le32 *s = (const __le32 *)src;
__le32 *d = (__le32 *)dst;
u32 L, R, A, B;
int i;
const struct des3_ede_ctx *dctx = crypto_tfm_ctx(tfm);
L = le32_to_cpu(s[0]);
R = le32_to_cpu(s[1]);
IP(L, R, A);
for (i = 0; i < 8; i++) {
ROUND(L, R, A, B, K, -2);
ROUND(R, L, A, B, K, -2);
}
for (i = 0; i < 8; i++) {
ROUND(R, L, A, B, K, -2);
ROUND(L, R, A, B, K, -2);
}
for (i = 0; i < 8; i++) {
ROUND(L, R, A, B, K, -2);
ROUND(R, L, A, B, K, -2);
}
FP(R, L, A);
d[0] = cpu_to_le32(R);
d[1] = cpu_to_le32(L);
des3_ede_decrypt(dctx, dst, src);
}
static struct crypto_alg des_algs[2] = { {
@ -938,13 +109,12 @@ static struct crypto_alg des_algs[2] = { {
.cra_blocksize = DES_BLOCK_SIZE,
.cra_ctxsize = sizeof(struct des_ctx),
.cra_module = THIS_MODULE,
.cra_alignmask = 3,
.cra_u = { .cipher = {
.cia_min_keysize = DES_KEY_SIZE,
.cia_max_keysize = DES_KEY_SIZE,
.cia_setkey = des_setkey,
.cia_encrypt = des_encrypt,
.cia_decrypt = des_decrypt } }
.cia_encrypt = crypto_des_encrypt,
.cia_decrypt = crypto_des_decrypt } }
}, {
.cra_name = "des3_ede",
.cra_driver_name = "des3_ede-generic",
@ -953,13 +123,12 @@ static struct crypto_alg des_algs[2] = { {
.cra_blocksize = DES3_EDE_BLOCK_SIZE,
.cra_ctxsize = sizeof(struct des3_ede_ctx),
.cra_module = THIS_MODULE,
.cra_alignmask = 3,
.cra_u = { .cipher = {
.cia_min_keysize = DES3_EDE_KEY_SIZE,
.cia_max_keysize = DES3_EDE_KEY_SIZE,
.cia_setkey = des3_ede_setkey,
.cia_encrypt = des3_ede_encrypt,
.cia_decrypt = des3_ede_decrypt } }
.cia_encrypt = crypto_des3_ede_encrypt,
.cia_decrypt = crypto_des3_ede_decrypt } }
} };
static int __init des_generic_mod_init(void)

28
drivers/crypto/Kconfig
View File

@ -150,7 +150,7 @@ config CRYPTO_DES_S390
depends on S390
select CRYPTO_ALGAPI
select CRYPTO_BLKCIPHER
select CRYPTO_DES
select CRYPTO_LIB_DES
help
This is the s390 hardware accelerated implementation of the
DES cipher algorithm (FIPS 46-2), and Triple DES EDE (FIPS 46-3).
@ -215,7 +215,7 @@ config CRYPTO_DEV_MARVELL_CESA
tristate "Marvell's Cryptographic Engine driver"
depends on PLAT_ORION || ARCH_MVEBU
select CRYPTO_LIB_AES
select CRYPTO_DES
select CRYPTO_LIB_DES
select CRYPTO_BLKCIPHER
select CRYPTO_HASH
select SRAM
@ -227,7 +227,7 @@ config CRYPTO_DEV_MARVELL_CESA
config CRYPTO_DEV_NIAGARA2
tristate "Niagara2 Stream Processing Unit driver"
select CRYPTO_DES
select CRYPTO_LIB_DES
select CRYPTO_BLKCIPHER
select CRYPTO_HASH
select CRYPTO_MD5
@ -244,7 +244,7 @@ config CRYPTO_DEV_NIAGARA2
config CRYPTO_DEV_HIFN_795X
tristate "Driver HIFN 795x crypto accelerator chips"
select CRYPTO_DES
select CRYPTO_LIB_DES
select CRYPTO_BLKCIPHER
select HW_RANDOM if CRYPTO_DEV_HIFN_795X_RNG
depends on PCI
@ -300,7 +300,7 @@ config CRYPTO_DEV_TALITOS2
config CRYPTO_DEV_IXP4XX
tristate "Driver for IXP4xx crypto hardware acceleration"
depends on ARCH_IXP4XX && IXP4XX_QMGR && IXP4XX_NPE
select CRYPTO_DES
select CRYPTO_LIB_DES
select CRYPTO_AEAD
select CRYPTO_AUTHENC
select CRYPTO_BLKCIPHER
@ -366,7 +366,7 @@ config CRYPTO_DEV_OMAP_AES
config CRYPTO_DEV_OMAP_DES
tristate "Support for OMAP DES/3DES hw engine"
depends on ARCH_OMAP2PLUS
select CRYPTO_DES
select CRYPTO_LIB_DES
select CRYPTO_BLKCIPHER
select CRYPTO_ENGINE
help
@ -384,7 +384,7 @@ config CRYPTO_DEV_PICOXCELL
select CRYPTO_AES
select CRYPTO_AUTHENC
select CRYPTO_BLKCIPHER
select CRYPTO_DES
select CRYPTO_LIB_DES
select CRYPTO_CBC
select CRYPTO_ECB
select CRYPTO_SEQIV
@ -497,7 +497,7 @@ config CRYPTO_DEV_ATMEL_AES
config CRYPTO_DEV_ATMEL_TDES
tristate "Support for Atmel DES/TDES hw accelerator"
depends on ARCH_AT91 || COMPILE_TEST
select CRYPTO_DES
select CRYPTO_LIB_DES
select CRYPTO_BLKCIPHER
help
Some Atmel processors have DES/TDES hw accelerator.
@ -595,7 +595,7 @@ config CRYPTO_DEV_QCE
depends on ARCH_QCOM || COMPILE_TEST
depends on HAS_IOMEM
select CRYPTO_AES
select CRYPTO_DES
select CRYPTO_LIB_DES
select CRYPTO_ECB
select CRYPTO_CBC
select CRYPTO_XTS
@ -643,7 +643,7 @@ config CRYPTO_DEV_SUN4I_SS
select CRYPTO_MD5
select CRYPTO_SHA1
select CRYPTO_AES
select CRYPTO_DES
select CRYPTO_LIB_DES
select CRYPTO_BLKCIPHER
help
Some Allwinner SoC have a crypto accelerator named
@ -666,7 +666,7 @@ config CRYPTO_DEV_ROCKCHIP
tristate "Rockchip's Cryptographic Engine driver"
depends on OF && ARCH_ROCKCHIP
select CRYPTO_AES
select CRYPTO_DES
select CRYPTO_LIB_DES
select CRYPTO_MD5
select CRYPTO_SHA1
select CRYPTO_SHA256
@ -703,7 +703,7 @@ config CRYPTO_DEV_BCM_SPU
depends on MAILBOX
default m
select CRYPTO_AUTHENC
select CRYPTO_DES
select CRYPTO_LIB_DES
select CRYPTO_MD5
select CRYPTO_SHA1
select CRYPTO_SHA256
@ -722,7 +722,7 @@ config CRYPTO_DEV_SAFEXCEL
select CRYPTO_LIB_AES
select CRYPTO_AUTHENC
select CRYPTO_BLKCIPHER
select CRYPTO_DES
select CRYPTO_LIB_DES
select CRYPTO_HASH
select CRYPTO_HMAC
select CRYPTO_MD5
@ -760,7 +760,7 @@ config CRYPTO_DEV_CCREE
default n
select CRYPTO_HASH
select CRYPTO_BLKCIPHER
select CRYPTO_DES
select CRYPTO_LIB_DES
select CRYPTO_AEAD
select CRYPTO_AUTHENC
select CRYPTO_SHA1

2
drivers/crypto/caam/Kconfig
View File

@ -98,7 +98,7 @@ config CRYPTO_DEV_FSL_CAAM_CRYPTO_API
select CRYPTO_AEAD
select CRYPTO_AUTHENC
select CRYPTO_BLKCIPHER
select CRYPTO_DES
select CRYPTO_LIB_DES
help
Selecting this will offload crypto for users of the
scatterlist crypto API (such as the linux native IPSec

2
drivers/crypto/cavium/nitrox/Kconfig
View File

@ -6,7 +6,7 @@ config CRYPTO_DEV_NITROX
tristate
select CRYPTO_BLKCIPHER
select CRYPTO_AES
select CRYPTO_DES
select CRYPTO_LIB_DES
select FW_LOADER
config CRYPTO_DEV_NITROX_CNN55XX

2
drivers/crypto/inside-secure/safexcel_cipher.c
View File

@ -13,7 +13,7 @@
#include <crypto/aes.h>
#include <crypto/authenc.h>
#include <crypto/ctr.h>
#include <crypto/des.h>
#include <crypto/internal/des.h>
#include <crypto/sha.h>
#include <crypto/skcipher.h>
#include <crypto/internal/aead.h>

2
drivers/crypto/stm32/Kconfig
View File

@ -25,7 +25,7 @@ config CRYPTO_DEV_STM32_CRYP
depends on ARCH_STM32
select CRYPTO_HASH
select CRYPTO_ENGINE
select CRYPTO_DES
select CRYPTO_LIB_DES
help
This enables support for the CRYP (AES/DES/TDES) hw accelerator which
can be found on STMicroelectronics STM32 SOC.

2
drivers/crypto/ux500/Kconfig
View File

@ -9,7 +9,7 @@ config CRYPTO_DEV_UX500_CRYP
depends on CRYPTO_DEV_UX500
select CRYPTO_ALGAPI
select CRYPTO_BLKCIPHER
select CRYPTO_DES
select CRYPTO_LIB_DES
help
This selects the crypto driver for the UX500_CRYP hardware. It supports
AES-ECB, CBC and CTR with keys sizes of 128, 192 and 256 bit sizes.

43
include/crypto/des.h
View File

@ -6,10 +6,7 @@
#ifndef __CRYPTO_DES_H
#define __CRYPTO_DES_H
#include <crypto/skcipher.h>
#include <linux/compiler.h>
#include <linux/fips.h>
#include <linux/string.h>
#include <linux/types.h>
#define DES_KEY_SIZE 8
#define DES_EXPKEY_WORDS 32
@ -19,6 +16,44 @@
#define DES3_EDE_EXPKEY_WORDS (3 * DES_EXPKEY_WORDS)
#define DES3_EDE_BLOCK_SIZE DES_BLOCK_SIZE
struct des_ctx {
u32 expkey[DES_EXPKEY_WORDS];
};
struct des3_ede_ctx {
u32 expkey[DES3_EDE_EXPKEY_WORDS];
};
void des_encrypt(const struct des_ctx *ctx, u8 *dst, const u8 *src);
void des_decrypt(const struct des_ctx *ctx, u8 *dst, const u8 *src);
void des3_ede_encrypt(const struct des3_ede_ctx *dctx, u8 *dst, const u8 *src);
void des3_ede_decrypt(const struct des3_ede_ctx *dctx, u8 *dst, const u8 *src);
/**
* des_expand_key - Expand a DES input key into a key schedule
* @ctx: the key schedule
* @key: buffer containing the input key
* @len: size of the buffer contents
*
* Returns 0 on success, -EINVAL if the input key is rejected and -ENOKEY if
* the key is accepted but has been found to be weak.
*/
int des_expand_key(struct des_ctx *ctx, const u8 *key, unsigned int keylen);
/**
* des3_ede_expand_key - Expand a triple DES input key into a key schedule
* @ctx: the key schedule
* @key: buffer containing the input key
* @len: size of the buffer contents
*
* Returns 0 on success, -EINVAL if the input key is rejected and -ENOKEY if
* the key is accepted but has been found to be weak. Note that weak keys will
* be rejected (and -EINVAL will be returned) when running in FIPS mode.
*/
int des3_ede_expand_key(struct des3_ede_ctx *ctx, const u8 *key,
unsigned int keylen);
extern int __des3_ede_setkey(u32 *expkey, u32 *flags, const u8 *key,
unsigned int keylen);

69
include/crypto/internal/des.h
View File

@ -25,18 +25,21 @@
*/
static inline int crypto_des_verify_key(struct crypto_tfm *tfm, const u8 *key)
{
u32 tmp[DES_EXPKEY_WORDS];
int err = 0;
struct des_ctx tmp;
int err;
if (!(crypto_tfm_get_flags(tfm) & CRYPTO_TFM_REQ_FORBID_WEAK_KEYS))
return 0;
if (!des_ekey(tmp, key)) {
crypto_tfm_set_flags(tfm, CRYPTO_TFM_RES_WEAK_KEY);
err = -EINVAL;
err = des_expand_key(&tmp, key, DES_KEY_SIZE);
if (err == -ENOKEY) {
if (crypto_tfm_get_flags(tfm) & CRYPTO_TFM_REQ_FORBID_WEAK_KEYS)
err = -EINVAL;
else
err = 0;
}
memzero_explicit(tmp, sizeof(tmp));
if (err)
crypto_tfm_set_flags(tfm, CRYPTO_TFM_RES_WEAK_KEY);
memzero_explicit(&tmp, sizeof(tmp));
return err;
}
@ -53,6 +56,28 @@ static inline int crypto_des_verify_key(struct crypto_tfm *tfm, const u8 *key)
* property.
*
*/
static inline int des3_ede_verify_key(const u8 *key, unsigned int key_len,
bool check_weak)
{
int ret = fips_enabled ? -EINVAL : -ENOKEY;
u32 K[6];
memcpy(K, key, DES3_EDE_KEY_SIZE);
if ((!((K[0] ^ K[2]) | (K[1] ^ K[3])) ||
!((K[2] ^ K[4]) | (K[3] ^ K[5]))) &&
(fips_enabled || check_weak))
goto bad;
if ((!((K[0] ^ K[4]) | (K[1] ^ K[5]))) && fips_enabled)
goto bad;
ret = 0;
bad:
memzero_explicit(K, DES3_EDE_KEY_SIZE);
return ret;
}
/**
* crypto_des3_ede_verify_key - Check whether a DES3-EDE key is weak
@ -70,28 +95,14 @@ static inline int crypto_des_verify_key(struct crypto_tfm *tfm, const u8 *key)
static inline int crypto_des3_ede_verify_key(struct crypto_tfm *tfm,
const u8 *key)
{
int err = -EINVAL;
u32 K[6];
int err;
memcpy(K, key, DES3_EDE_KEY_SIZE);
if ((!((K[0] ^ K[2]) | (K[1] ^ K[3])) ||
!((K[2] ^ K[4]) | (K[3] ^ K[5]))) &&
(fips_enabled || (crypto_tfm_get_flags(tfm) &
CRYPTO_TFM_REQ_FORBID_WEAK_KEYS)))
goto bad;
if ((!((K[0] ^ K[4]) | (K[1] ^ K[5]))) && fips_enabled)
goto bad;
err = 0;
out:
memzero_explicit(K, DES3_EDE_KEY_SIZE);
err = des3_ede_verify_key(key, DES3_EDE_KEY_SIZE,
crypto_tfm_get_flags(tfm) &
CRYPTO_TFM_REQ_FORBID_WEAK_KEYS);
if (err)
crypto_tfm_set_flags(tfm, CRYPTO_TFM_RES_WEAK_KEY);
return err;
bad:
crypto_tfm_set_flags(tfm, CRYPTO_TFM_RES_WEAK_KEY);
goto out;
}
static inline int verify_skcipher_des_key(struct crypto_skcipher *tfm,

3
lib/crypto/Makefile
View File

@ -5,3 +5,6 @@ libaes-y := aes.o
obj-$(CONFIG_CRYPTO_LIB_ARC4) += libarc4.o
libarc4-y := arc4.o
obj-$(CONFIG_CRYPTO_LIB_DES) += libdes.o
libdes-y := des.o

902
lib/crypto/des.c Normal file
View File

@ -0,0 +1,902 @@
// SPDX-License-Identifier: GPL-2.0-or-later
/*
* Cryptographic API.
*
* DES & Triple DES EDE Cipher Algorithms.
*
* Copyright (c) 2005 Dag Arne Osvik <da@osvik.no>
*/
#include <linux/bitops.h>
#include <linux/compiler.h>
#include <linux/crypto.h>
#include <linux/errno.h>
#include <linux/fips.h>
#include <linux/init.h>
#include <linux/module.h>
#include <linux/string.h>
#include <linux/types.h>
#include <asm/unaligned.h>
#include <crypto/des.h>
#include <crypto/internal/des.h>
#define ROL(x, r) ((x) = rol32((x), (r)))
#define ROR(x, r) ((x) = ror32((x), (r)))
/* Lookup tables for key expansion */
static const u8 pc1[256] = {
0x00, 0x00, 0x40, 0x04, 0x10, 0x10, 0x50, 0x14,
0x04, 0x40, 0x44, 0x44, 0x14, 0x50, 0x54, 0x54,
0x02, 0x02, 0x42, 0x06, 0x12, 0x12, 0x52, 0x16,
0x06, 0x42, 0x46, 0x46, 0x16, 0x52, 0x56, 0x56,
0x80, 0x08, 0xc0, 0x0c, 0x90, 0x18, 0xd0, 0x1c,
0x84, 0x48, 0xc4, 0x4c, 0x94, 0x58, 0xd4, 0x5c,
0x82, 0x0a, 0xc2, 0x0e, 0x92, 0x1a, 0xd2, 0x1e,
0x86, 0x4a, 0xc6, 0x4e, 0x96, 0x5a, 0xd6, 0x5e,
0x20, 0x20, 0x60, 0x24, 0x30, 0x30, 0x70, 0x34,
0x24, 0x60, 0x64, 0x64, 0x34, 0x70, 0x74, 0x74,
0x22, 0x22, 0x62, 0x26, 0x32, 0x32, 0x72, 0x36,
0x26, 0x62, 0x66, 0x66, 0x36, 0x72, 0x76, 0x76,
0xa0, 0x28, 0xe0, 0x2c, 0xb0, 0x38, 0xf0, 0x3c,
0xa4, 0x68, 0xe4, 0x6c, 0xb4, 0x78, 0xf4, 0x7c,
0xa2, 0x2a, 0xe2, 0x2e, 0xb2, 0x3a, 0xf2, 0x3e,
0xa6, 0x6a, 0xe6, 0x6e, 0xb6, 0x7a, 0xf6, 0x7e,
0x08, 0x80, 0x48, 0x84, 0x18, 0x90, 0x58, 0x94,
0x0c, 0xc0, 0x4c, 0xc4, 0x1c, 0xd0, 0x5c, 0xd4,
0x0a, 0x82, 0x4a, 0x86, 0x1a, 0x92, 0x5a, 0x96,
0x0e, 0xc2, 0x4e, 0xc6, 0x1e, 0xd2, 0x5e, 0xd6,
0x88, 0x88, 0xc8, 0x8c, 0x98, 0x98, 0xd8, 0x9c,
0x8c, 0xc8, 0xcc, 0xcc, 0x9c, 0xd8, 0xdc, 0xdc,
0x8a, 0x8a, 0xca, 0x8e, 0x9a, 0x9a, 0xda, 0x9e,
0x8e, 0xca, 0xce, 0xce, 0x9e, 0xda, 0xde, 0xde,
0x28, 0xa0, 0x68, 0xa4, 0x38, 0xb0, 0x78, 0xb4,
0x2c, 0xe0, 0x6c, 0xe4, 0x3c, 0xf0, 0x7c, 0xf4,
0x2a, 0xa2, 0x6a, 0xa6, 0x3a, 0xb2, 0x7a, 0xb6,
0x2e, 0xe2, 0x6e, 0xe6, 0x3e, 0xf2, 0x7e, 0xf6,
0xa8, 0xa8, 0xe8, 0xac, 0xb8, 0xb8, 0xf8, 0xbc,
0xac, 0xe8, 0xec, 0xec, 0xbc, 0xf8, 0xfc, 0xfc,
0xaa, 0xaa, 0xea, 0xae, 0xba, 0xba, 0xfa, 0xbe,
0xae, 0xea, 0xee, 0xee, 0xbe, 0xfa, 0xfe, 0xfe
};
static const u8 rs[256] = {
0x00, 0x00, 0x80, 0x80, 0x02, 0x02, 0x82, 0x82,
0x04, 0x04, 0x84, 0x84, 0x06, 0x06, 0x86, 0x86,
0x08, 0x08, 0x88, 0x88, 0x0a, 0x0a, 0x8a, 0x8a,
0x0c, 0x0c, 0x8c, 0x8c, 0x0e, 0x0e, 0x8e, 0x8e,
0x10, 0x10, 0x90, 0x90, 0x12, 0x12, 0x92, 0x92,
0x14, 0x14, 0x94, 0x94, 0x16, 0x16, 0x96, 0x96,
0x18, 0x18, 0x98, 0x98, 0x1a, 0x1a, 0x9a, 0x9a,
0x1c, 0x1c, 0x9c, 0x9c, 0x1e, 0x1e, 0x9e, 0x9e,
0x20, 0x20, 0xa0, 0xa0, 0x22, 0x22, 0xa2, 0xa2,
0x24, 0x24, 0xa4, 0xa4, 0x26, 0x26, 0xa6, 0xa6,
0x28, 0x28, 0xa8, 0xa8, 0x2a, 0x2a, 0xaa, 0xaa,
0x2c, 0x2c, 0xac, 0xac, 0x2e, 0x2e, 0xae, 0xae,
0x30, 0x30, 0xb0, 0xb0, 0x32, 0x32, 0xb2, 0xb2,
0x34, 0x34, 0xb4, 0xb4, 0x36, 0x36, 0xb6, 0xb6,
0x38, 0x38, 0xb8, 0xb8, 0x3a, 0x3a, 0xba, 0xba,
0x3c, 0x3c, 0xbc, 0xbc, 0x3e, 0x3e, 0xbe, 0xbe,
0x40, 0x40, 0xc0, 0xc0, 0x42, 0x42, 0xc2, 0xc2,
0x44, 0x44, 0xc4, 0xc4, 0x46, 0x46, 0xc6, 0xc6,
0x48, 0x48, 0xc8, 0xc8, 0x4a, 0x4a, 0xca, 0xca,
0x4c, 0x4c, 0xcc, 0xcc, 0x4e, 0x4e, 0xce, 0xce,
0x50, 0x50, 0xd0, 0xd0, 0x52, 0x52, 0xd2, 0xd2,
0x54, 0x54, 0xd4, 0xd4, 0x56, 0x56, 0xd6, 0xd6,
0x58, 0x58, 0xd8, 0xd8, 0x5a, 0x5a, 0xda, 0xda,
0x5c, 0x5c, 0xdc, 0xdc, 0x5e, 0x5e, 0xde, 0xde,
0x60, 0x60, 0xe0, 0xe0, 0x62, 0x62, 0xe2, 0xe2,
0x64, 0x64, 0xe4, 0xe4, 0x66, 0x66, 0xe6, 0xe6,
0x68, 0x68, 0xe8, 0xe8, 0x6a, 0x6a, 0xea, 0xea,
0x6c, 0x6c, 0xec, 0xec, 0x6e, 0x6e, 0xee, 0xee,
0x70, 0x70, 0xf0, 0xf0, 0x72, 0x72, 0xf2, 0xf2,
0x74, 0x74, 0xf4, 0xf4, 0x76, 0x76, 0xf6, 0xf6,
0x78, 0x78, 0xf8, 0xf8, 0x7a, 0x7a, 0xfa, 0xfa,
0x7c, 0x7c, 0xfc, 0xfc, 0x7e, 0x7e, 0xfe, 0xfe
};
static const u32 pc2[1024] = {
0x00000000, 0x00000000, 0x00000000, 0x00000000,
0x00040000, 0x00000000, 0x04000000, 0x00100000,
0x00400000, 0x00000008, 0x00000800, 0x40000000,
0x00440000, 0x00000008, 0x04000800, 0x40100000,
0x00000400, 0x00000020, 0x08000000, 0x00000100,
0x00040400, 0x00000020, 0x0c000000, 0x00100100,
0x00400400, 0x00000028, 0x08000800, 0x40000100,
0x00440400, 0x00000028, 0x0c000800, 0x40100100,
0x80000000, 0x00000010, 0x00000000, 0x00800000,
0x80040000, 0x00000010, 0x04000000, 0x00900000,
0x80400000, 0x00000018, 0x00000800, 0x40800000,
0x80440000, 0x00000018, 0x04000800, 0x40900000,
0x80000400, 0x00000030, 0x08000000, 0x00800100,
0x80040400, 0x00000030, 0x0c000000, 0x00900100,
0x80400400, 0x00000038, 0x08000800, 0x40800100,
0x80440400, 0x00000038, 0x0c000800, 0x40900100,
0x10000000, 0x00000000, 0x00200000, 0x00001000,
0x10040000, 0x00000000, 0x04200000, 0x00101000,
0x10400000, 0x00000008, 0x00200800, 0x40001000,
0x10440000, 0x00000008, 0x04200800, 0x40101000,
0x10000400, 0x00000020, 0x08200000, 0x00001100,
0x10040400, 0x00000020, 0x0c200000, 0x00101100,
0x10400400, 0x00000028, 0x08200800, 0x40001100,
0x10440400, 0x00000028, 0x0c200800, 0x40101100,
0x90000000, 0x00000010, 0x00200000, 0x00801000,
0x90040000, 0x00000010, 0x04200000, 0x00901000,
0x90400000, 0x00000018, 0x00200800, 0x40801000,
0x90440000, 0x00000018, 0x04200800, 0x40901000,
0x90000400, 0x00000030, 0x08200000, 0x00801100,
0x90040400, 0x00000030, 0x0c200000, 0x00901100,
0x90400400, 0x00000038, 0x08200800, 0x40801100,
0x90440400, 0x00000038, 0x0c200800, 0x40901100,
0x00000200, 0x00080000, 0x00000000, 0x00000004,
0x00040200, 0x00080000, 0x04000000, 0x00100004,
0x00400200, 0x00080008, 0x00000800, 0x40000004,
0x00440200, 0x00080008, 0x04000800, 0x40100004,
0x00000600, 0x00080020, 0x08000000, 0x00000104,
0x00040600, 0x00080020, 0x0c000000, 0x00100104,
0x00400600, 0x00080028, 0x08000800, 0x40000104,
0x00440600, 0x00080028, 0x0c000800, 0x40100104,
0x80000200, 0x00080010, 0x00000000, 0x00800004,
0x80040200, 0x00080010, 0x04000000, 0x00900004,
0x80400200, 0x00080018, 0x00000800, 0x40800004,
0x80440200, 0x00080018, 0x04000800, 0x40900004,
0x80000600, 0x00080030, 0x08000000, 0x00800104,
0x80040600, 0x00080030, 0x0c000000, 0x00900104,
0x80400600, 0x00080038, 0x08000800, 0x40800104,
0x80440600, 0x00080038, 0x0c000800, 0x40900104,
0x10000200, 0x00080000, 0x00200000, 0x00001004,
0x10040200, 0x00080000, 0x04200000, 0x00101004,
0x10400200, 0x00080008, 0x00200800, 0x40001004,
0x10440200, 0x00080008, 0x04200800, 0x40101004,
0x10000600, 0x00080020, 0x08200000, 0x00001104,
0x10040600, 0x00080020, 0x0c200000, 0x00101104,
0x10400600, 0x00080028, 0x08200800, 0x40001104,
0x10440600, 0x00080028, 0x0c200800, 0x40101104,
0x90000200, 0x00080010, 0x00200000, 0x00801004,
0x90040200, 0x00080010, 0x04200000, 0x00901004,
0x90400200, 0x00080018, 0x00200800, 0x40801004,
0x90440200, 0x00080018, 0x04200800, 0x40901004,
0x90000600, 0x00080030, 0x08200000, 0x00801104,
0x90040600, 0x00080030, 0x0c200000, 0x00901104,
0x90400600, 0x00080038, 0x08200800, 0x40801104,
0x90440600, 0x00080038, 0x0c200800, 0x40901104,
0x00000002, 0x00002000, 0x20000000, 0x00000001,
0x00040002, 0x00002000, 0x24000000, 0x00100001,
0x00400002, 0x00002008, 0x20000800, 0x40000001,
0x00440002, 0x00002008, 0x24000800, 0x40100001,
0x00000402, 0x00002020, 0x28000000, 0x00000101,
0x00040402, 0x00002020, 0x2c000000, 0x00100101,
0x00400402, 0x00002028, 0x28000800, 0x40000101,
0x00440402, 0x00002028, 0x2c000800, 0x40100101,
0x80000002, 0x00002010, 0x20000000, 0x00800001,
0x80040002, 0x00002010, 0x24000000, 0x00900001,
0x80400002, 0x00002018, 0x20000800, 0x40800001,
0x80440002, 0x00002018, 0x24000800, 0x40900001,
0x80000402, 0x00002030, 0x28000000, 0x00800101,
0x80040402, 0x00002030, 0x2c000000, 0x00900101,
0x80400402, 0x00002038, 0x28000800, 0x40800101,
0x80440402, 0x00002038, 0x2c000800, 0x40900101,
0x10000002, 0x00002000, 0x20200000, 0x00001001,
0x10040002, 0x00002000, 0x24200000, 0x00101001,
0x10400002, 0x00002008, 0x20200800, 0x40001001,
0x10440002, 0x00002008, 0x24200800, 0x40101001,
0x10000402, 0x00002020, 0x28200000, 0x00001101,
0x10040402, 0x00002020, 0x2c200000, 0x00101101,
0x10400402, 0x00002028, 0x28200800, 0x40001101,
0x10440402, 0x00002028, 0x2c200800, 0x40101101,
0x90000002, 0x00002010, 0x20200000, 0x00801001,
0x90040002, 0x00002010, 0x24200000, 0x00901001,
0x90400002, 0x00002018, 0x20200800, 0x40801001,
0x90440002, 0x00002018, 0x24200800, 0x40901001,
0x90000402, 0x00002030, 0x28200000, 0x00801101,
0x90040402, 0x00002030, 0x2c200000, 0x00901101,
0x90400402, 0x00002038, 0x28200800, 0x40801101,
0x90440402, 0x00002038, 0x2c200800, 0x40901101,
0x00000202, 0x00082000, 0x20000000, 0x00000005,
0x00040202, 0x00082000, 0x24000000, 0x00100005,
0x00400202, 0x00082008, 0x20000800, 0x40000005,
0x00440202, 0x00082008, 0x24000800, 0x40100005,
0x00000602, 0x00082020, 0x28000000, 0x00000105,
0x00040602, 0x00082020, 0x2c000000, 0x00100105,
0x00400602, 0x00082028, 0x28000800, 0x40000105,
0x00440602, 0x00082028, 0x2c000800, 0x40100105,
0x80000202, 0x00082010, 0x20000000, 0x00800005,
0x80040202, 0x00082010, 0x24000000, 0x00900005,
0x80400202, 0x00082018, 0x20000800, 0x40800005,
0x80440202, 0x00082018, 0x24000800, 0x40900005,
0x80000602, 0x00082030, 0x28000000, 0x00800105,
0x80040602, 0x00082030, 0x2c000000, 0x00900105,
0x80400602, 0x00082038, 0x28000800, 0x40800105,
0x80440602, 0x00082038, 0x2c000800, 0x40900105,
0x10000202, 0x00082000, 0x20200000, 0x00001005,
0x10040202, 0x00082000, 0x24200000, 0x00101005,
0x10400202, 0x00082008, 0x20200800, 0x40001005,
0x10440202, 0x00082008, 0x24200800, 0x40101005,
0x10000602, 0x00082020, 0x28200000, 0x00001105,
0x10040602, 0x00082020, 0x2c200000, 0x00101105,
0x10400602, 0x00082028, 0x28200800, 0x40001105,
0x10440602, 0x00082028, 0x2c200800, 0x40101105,
0x90000202, 0x00082010, 0x20200000, 0x00801005,
0x90040202, 0x00082010, 0x24200000, 0x00901005,
0x90400202, 0x00082018, 0x20200800, 0x40801005,
0x90440202, 0x00082018, 0x24200800, 0x40901005,
0x90000602, 0x00082030, 0x28200000, 0x00801105,
0x90040602, 0x00082030, 0x2c200000, 0x00901105,
0x90400602, 0x00082038, 0x28200800, 0x40801105,
0x90440602, 0x00082038, 0x2c200800, 0x40901105,
0x00000000, 0x00000000, 0x00000000, 0x00000000,
0x00000000, 0x00000008, 0x00080000, 0x10000000,
0x02000000, 0x00000000, 0x00000080, 0x00001000,
0x02000000, 0x00000008, 0x00080080, 0x10001000,
0x00004000, 0x00000000, 0x00000040, 0x00040000,
0x00004000, 0x00000008, 0x00080040, 0x10040000,
0x02004000, 0x00000000, 0x000000c0, 0x00041000,
0x02004000, 0x00000008, 0x000800c0, 0x10041000,
0x00020000, 0x00008000, 0x08000000, 0x00200000,
0x00020000, 0x00008008, 0x08080000, 0x10200000,
0x02020000, 0x00008000, 0x08000080, 0x00201000,
0x02020000, 0x00008008, 0x08080080, 0x10201000,
0x00024000, 0x00008000, 0x08000040, 0x00240000,
0x00024000, 0x00008008, 0x08080040, 0x10240000,
0x02024000, 0x00008000, 0x080000c0, 0x00241000,
0x02024000, 0x00008008, 0x080800c0, 0x10241000,
0x00000000, 0x01000000, 0x00002000, 0x00000020,
0x00000000, 0x01000008, 0x00082000, 0x10000020,
0x02000000, 0x01000000, 0x00002080, 0x00001020,
0x02000000, 0x01000008, 0x00082080, 0x10001020,
0x00004000, 0x01000000, 0x00002040, 0x00040020,
0x00004000, 0x01000008, 0x00082040, 0x10040020,
0x02004000, 0x01000000, 0x000020c0, 0x00041020,
0x02004000, 0x01000008, 0x000820c0, 0x10041020,
0x00020000, 0x01008000, 0x08002000, 0x00200020,
0x00020000, 0x01008008, 0x08082000, 0x10200020,
0x02020000, 0x01008000, 0x08002080, 0x00201020,
0x02020000, 0x01008008, 0x08082080, 0x10201020,
0x00024000, 0x01008000, 0x08002040, 0x00240020,
0x00024000, 0x01008008, 0x08082040, 0x10240020,
0x02024000, 0x01008000, 0x080020c0, 0x00241020,
0x02024000, 0x01008008, 0x080820c0, 0x10241020,
0x00000400, 0x04000000, 0x00100000, 0x00000004,
0x00000400, 0x04000008, 0x00180000, 0x10000004,
0x02000400, 0x04000000, 0x00100080, 0x00001004,
0x02000400, 0x04000008, 0x00180080, 0x10001004,
0x00004400, 0x04000000, 0x00100040, 0x00040004,
0x00004400, 0x04000008, 0x00180040, 0x10040004,
0x02004400, 0x04000000, 0x001000c0, 0x00041004,
0x02004400, 0x04000008, 0x001800c0, 0x10041004,
0x00020400, 0x04008000, 0x08100000, 0x00200004,
0x00020400, 0x04008008, 0x08180000, 0x10200004,
0x02020400, 0x04008000, 0x08100080, 0x00201004,
0x02020400, 0x04008008, 0x08180080, 0x10201004,
0x00024400, 0x04008000, 0x08100040, 0x00240004,
0x00024400, 0x04008008, 0x08180040, 0x10240004,
0x02024400, 0x04008000, 0x081000c0, 0x00241004,
0x02024400, 0x04008008, 0x081800c0, 0x10241004,
0x00000400, 0x05000000, 0x00102000, 0x00000024,
0x00000400, 0x05000008, 0x00182000, 0x10000024,
0x02000400, 0x05000000, 0x00102080, 0x00001024,
0x02000400, 0x05000008, 0x00182080, 0x10001024,
0x00004400, 0x05000000, 0x00102040, 0x00040024,
0x00004400, 0x05000008, 0x00182040, 0x10040024,
0x02004400, 0x05000000, 0x001020c0, 0x00041024,
0x02004400, 0x05000008, 0x001820c0, 0x10041024,
0x00020400, 0x05008000, 0x08102000, 0x00200024,
0x00020400, 0x05008008, 0x08182000, 0x10200024,
0x02020400, 0x05008000, 0x08102080, 0x00201024,
0x02020400, 0x05008008, 0x08182080, 0x10201024,
0x00024400, 0x05008000, 0x08102040, 0x00240024,
0x00024400, 0x05008008, 0x08182040, 0x10240024,
0x02024400, 0x05008000, 0x081020c0, 0x00241024,
0x02024400, 0x05008008, 0x081820c0, 0x10241024,
0x00000800, 0x00010000, 0x20000000, 0x00000010,
0x00000800, 0x00010008, 0x20080000, 0x10000010,
0x02000800, 0x00010000, 0x20000080, 0x00001010,
0x02000800, 0x00010008, 0x20080080, 0x10001010,
0x00004800, 0x00010000, 0x20000040, 0x00040010,
0x00004800, 0x00010008, 0x20080040, 0x10040010,
0x02004800, 0x00010000, 0x200000c0, 0x00041010,
0x02004800, 0x00010008, 0x200800c0, 0x10041010,
0x00020800, 0x00018000, 0x28000000, 0x00200010,
0x00020800, 0x00018008, 0x28080000, 0x10200010,
0x02020800, 0x00018000, 0x28000080, 0x00201010,
0x02020800, 0x00018008, 0x28080080, 0x10201010,
0x00024800, 0x00018000, 0x28000040, 0x00240010,
0x00024800, 0x00018008, 0x28080040, 0x10240010,
0x02024800, 0x00018000, 0x280000c0, 0x00241010,
0x02024800, 0x00018008, 0x280800c0, 0x10241010,
0x00000800, 0x01010000, 0x20002000, 0x00000030,
0x00000800, 0x01010008, 0x20082000, 0x10000030,
0x02000800, 0x01010000, 0x20002080, 0x00001030,
0x02000800, 0x01010008, 0x20082080, 0x10001030,
0x00004800, 0x01010000, 0x20002040, 0x00040030,
0x00004800, 0x01010008, 0x20082040, 0x10040030,
0x02004800, 0x01010000, 0x200020c0, 0x00041030,
0x02004800, 0x01010008, 0x200820c0, 0x10041030,
0x00020800, 0x01018000, 0x28002000, 0x00200030,
0x00020800, 0x01018008, 0x28082000, 0x10200030,
0x02020800, 0x01018000, 0x28002080, 0x00201030,
0x02020800, 0x01018008, 0x28082080, 0x10201030,
0x00024800, 0x01018000, 0x28002040, 0x00240030,
0x00024800, 0x01018008, 0x28082040, 0x10240030,
0x02024800, 0x01018000, 0x280020c0, 0x00241030,
0x02024800, 0x01018008, 0x280820c0, 0x10241030,
0x00000c00, 0x04010000, 0x20100000, 0x00000014,
0x00000c00, 0x04010008, 0x20180000, 0x10000014,
0x02000c00, 0x04010000, 0x20100080, 0x00001014,
0x02000c00, 0x04010008, 0x20180080, 0x10001014,
0x00004c00, 0x04010000, 0x20100040, 0x00040014,
0x00004c00, 0x04010008, 0x20180040, 0x10040014,
0x02004c00, 0x04010000, 0x201000c0, 0x00041014,
0x02004c00, 0x04010008, 0x201800c0, 0x10041014,
0x00020c00, 0x04018000, 0x28100000, 0x00200014,
0x00020c00, 0x04018008, 0x28180000, 0x10200014,
0x02020c00, 0x04018000, 0x28100080, 0x00201014,
0x02020c00, 0x04018008, 0x28180080, 0x10201014,
0x00024c00, 0x04018000, 0x28100040, 0x00240014,
0x00024c00, 0x04018008, 0x28180040, 0x10240014,
0x02024c00, 0x04018000, 0x281000c0, 0x00241014,
0x02024c00, 0x04018008, 0x281800c0, 0x10241014,
0x00000c00, 0x05010000, 0x20102000, 0x00000034,
0x00000c00, 0x05010008, 0x20182000, 0x10000034,
0x02000c00, 0x05010000, 0x20102080, 0x00001034,
0x02000c00, 0x05010008, 0x20182080, 0x10001034,
0x00004c00, 0x05010000, 0x20102040, 0x00040034,
0x00004c00, 0x05010008, 0x20182040, 0x10040034,
0x02004c00, 0x05010000, 0x201020c0, 0x00041034,
0x02004c00, 0x05010008, 0x201820c0, 0x10041034,
0x00020c00, 0x05018000, 0x28102000, 0x00200034,
0x00020c00, 0x05018008, 0x28182000, 0x10200034,
0x02020c00, 0x05018000, 0x28102080, 0x00201034,
0x02020c00, 0x05018008, 0x28182080, 0x10201034,
0x00024c00, 0x05018000, 0x28102040, 0x00240034,
0x00024c00, 0x05018008, 0x28182040, 0x10240034,
0x02024c00, 0x05018000, 0x281020c0, 0x00241034,
0x02024c00, 0x05018008, 0x281820c0, 0x10241034
};
/* S-box lookup tables */
static const u32 S1[64] = {
0x01010400, 0x00000000, 0x00010000, 0x01010404,
0x01010004, 0x00010404, 0x00000004, 0x00010000,
0x00000400, 0x01010400, 0x01010404, 0x00000400,
0x01000404, 0x01010004, 0x01000000, 0x00000004,
0x00000404, 0x01000400, 0x01000400, 0x00010400,
0x00010400, 0x01010000, 0x01010000, 0x01000404,
0x00010004, 0x01000004, 0x01000004, 0x00010004,
0x00000000, 0x00000404, 0x00010404, 0x01000000,
0x00010000, 0x01010404, 0x00000004, 0x01010000,
0x01010400, 0x01000000, 0x01000000, 0x00000400,
0x01010004, 0x00010000, 0x00010400, 0x01000004,
0x00000400, 0x00000004, 0x01000404, 0x00010404,
0x01010404, 0x00010004, 0x01010000, 0x01000404,
0x01000004, 0x00000404, 0x00010404, 0x01010400,
0x00000404, 0x01000400, 0x01000400, 0x00000000,
0x00010004, 0x00010400, 0x00000000, 0x01010004
};
static const u32 S2[64] = {
0x80108020, 0x80008000, 0x00008000, 0x00108020,
0x00100000, 0x00000020, 0x80100020, 0x80008020,
0x80000020, 0x80108020, 0x80108000, 0x80000000,
0x80008000, 0x00100000, 0x00000020, 0x80100020,
0x00108000, 0x00100020, 0x80008020, 0x00000000,
0x80000000, 0x00008000, 0x00108020, 0x80100000,
0x00100020, 0x80000020, 0x00000000, 0x00108000,
0x00008020, 0x80108000, 0x80100000, 0x00008020,
0x00000000, 0x00108020, 0x80100020, 0x00100000,
0x80008020, 0x80100000, 0x80108000, 0x00008000,
0x80100000, 0x80008000, 0x00000020, 0x80108020,
0x00108020, 0x00000020, 0x00008000, 0x80000000,
0x00008020, 0x80108000, 0x00100000, 0x80000020,
0x00100020, 0x80008020, 0x80000020, 0x00100020,
0x00108000, 0x00000000, 0x80008000, 0x00008020,
0x80000000, 0x80100020, 0x80108020, 0x00108000
};
static const u32 S3[64] = {
0x00000208, 0x08020200, 0x00000000, 0x08020008,
0x08000200, 0x00000000, 0x00020208, 0x08000200,
0x00020008, 0x08000008, 0x08000008, 0x00020000,
0x08020208, 0x00020008, 0x08020000, 0x00000208,
0x08000000, 0x00000008, 0x08020200, 0x00000200,
0x00020200, 0x08020000, 0x08020008, 0x00020208,
0x08000208, 0x00020200, 0x00020000, 0x08000208,
0x00000008, 0x08020208, 0x00000200, 0x08000000,
0x08020200, 0x08000000, 0x00020008, 0x00000208,
0x00020000, 0x08020200, 0x08000200, 0x00000000,
0x00000200, 0x00020008, 0x08020208, 0x08000200,
0x08000008, 0x00000200, 0x00000000, 0x08020008,
0x08000208, 0x00020000, 0x08000000, 0x08020208,
0x00000008, 0x00020208, 0x00020200, 0x08000008,
0x08020000, 0x08000208, 0x00000208, 0x08020000,
0x00020208, 0x00000008, 0x08020008, 0x00020200
};
static const u32 S4[64] = {
0x00802001, 0x00002081, 0x00002081, 0x00000080,
0x00802080, 0x00800081, 0x00800001, 0x00002001,
0x00000000, 0x00802000, 0x00802000, 0x00802081,
0x00000081, 0x00000000, 0x00800080, 0x00800001,
0x00000001, 0x00002000, 0x00800000, 0x00802001,
0x00000080, 0x00800000, 0x00002001, 0x00002080,
0x00800081, 0x00000001, 0x00002080, 0x00800080,
0x00002000, 0x00802080, 0x00802081, 0x00000081,
0x00800080, 0x00800001, 0x00802000, 0x00802081,
0x00000081, 0x00000000, 0x00000000, 0x00802000,
0x00002080, 0x00800080, 0x00800081, 0x00000001,
0x00802001, 0x00002081, 0x00002081, 0x00000080,
0x00802081, 0x00000081, 0x00000001, 0x00002000,
0x00800001, 0x00002001, 0x00802080, 0x00800081,
0x00002001, 0x00002080, 0x00800000, 0x00802001,
0x00000080, 0x00800000, 0x00002000, 0x00802080
};
static const u32 S5[64] = {
0x00000100, 0x02080100, 0x02080000, 0x42000100,
0x00080000, 0x00000100, 0x40000000, 0x02080000,
0x40080100, 0x00080000, 0x02000100, 0x40080100,
0x42000100, 0x42080000, 0x00080100, 0x40000000,
0x02000000, 0x40080000, 0x40080000, 0x00000000,
0x40000100, 0x42080100, 0x42080100, 0x02000100,
0x42080000, 0x40000100, 0x00000000, 0x42000000,
0x02080100, 0x02000000, 0x42000000, 0x00080100,
0x00080000, 0x42000100, 0x00000100, 0x02000000,
0x40000000, 0x02080000, 0x42000100, 0x40080100,
0x02000100, 0x40000000, 0x42080000, 0x02080100,
0x40080100, 0x00000100, 0x02000000, 0x42080000,
0x42080100, 0x00080100, 0x42000000, 0x42080100,
0x02080000, 0x00000000, 0x40080000, 0x42000000,
0x00080100, 0x02000100, 0x40000100, 0x00080000,
0x00000000, 0x40080000, 0x02080100, 0x40000100
};
static const u32 S6[64] = {
0x20000010, 0x20400000, 0x00004000, 0x20404010,
0x20400000, 0x00000010, 0x20404010, 0x00400000,
0x20004000, 0x00404010, 0x00400000, 0x20000010,
0x00400010, 0x20004000, 0x20000000, 0x00004010,
0x00000000, 0x00400010, 0x20004010, 0x00004000,
0x00404000, 0x20004010, 0x00000010, 0x20400010,
0x20400010, 0x00000000, 0x00404010, 0x20404000,
0x00004010, 0x00404000, 0x20404000, 0x20000000,
0x20004000, 0x00000010, 0x20400010, 0x00404000,
0x20404010, 0x00400000, 0x00004010, 0x20000010,
0x00400000, 0x20004000, 0x20000000, 0x00004010,
0x20000010, 0x20404010, 0x00404000, 0x20400000,
0x00404010, 0x20404000, 0x00000000, 0x20400010,
0x00000010, 0x00004000, 0x20400000, 0x00404010,
0x00004000, 0x00400010, 0x20004010, 0x00000000,
0x20404000, 0x20000000, 0x00400010, 0x20004010
};
static const u32 S7[64] = {
0x00200000, 0x04200002, 0x04000802, 0x00000000,
0x00000800, 0x04000802, 0x00200802, 0x04200800,
0x04200802, 0x00200000, 0x00000000, 0x04000002,
0x00000002, 0x04000000, 0x04200002, 0x00000802,
0x04000800, 0x00200802, 0x00200002, 0x04000800,
0x04000002, 0x04200000, 0x04200800, 0x00200002,
0x04200000, 0x00000800, 0x00000802, 0x04200802,
0x00200800, 0x00000002, 0x04000000, 0x00200800,
0x04000000, 0x00200800, 0x00200000, 0x04000802,
0x04000802, 0x04200002, 0x04200002, 0x00000002,
0x00200002, 0x04000000, 0x04000800, 0x00200000,
0x04200800, 0x00000802, 0x00200802, 0x04200800,
0x00000802, 0x04000002, 0x04200802, 0x04200000,
0x00200800, 0x00000000, 0x00000002, 0x04200802,
0x00000000, 0x00200802, 0x04200000, 0x00000800,
0x04000002, 0x04000800, 0x00000800, 0x00200002
};
static const u32 S8[64] = {
0x10001040, 0x00001000, 0x00040000, 0x10041040,
0x10000000, 0x10001040, 0x00000040, 0x10000000,
0x00040040, 0x10040000, 0x10041040, 0x00041000,
0x10041000, 0x00041040, 0x00001000, 0x00000040,
0x10040000, 0x10000040, 0x10001000, 0x00001040,
0x00041000, 0x00040040, 0x10040040, 0x10041000,
0x00001040, 0x00000000, 0x00000000, 0x10040040,
0x10000040, 0x10001000, 0x00041040, 0x00040000,
0x00041040, 0x00040000, 0x10041000, 0x00001000,
0x00000040, 0x10040040, 0x00001000, 0x00041040,
0x10001000, 0x00000040, 0x10000040, 0x10040000,
0x10040040, 0x10000000, 0x00040000, 0x10001040,
0x00000000, 0x10041040, 0x00040040, 0x10000040,
0x10040000, 0x10001000, 0x10001040, 0x00000000,
0x10041040, 0x00041000, 0x00041000, 0x00001040,
0x00001040, 0x00040040, 0x10000000, 0x10041000
};
/* Encryption components: IP, FP, and round function */
#define IP(L, R, T) \
ROL(R, 4); \
T = L; \
L ^= R; \
L &= 0xf0f0f0f0; \
R ^= L; \
L ^= T; \
ROL(R, 12); \
T = L; \
L ^= R; \
L &= 0xffff0000; \
R ^= L; \
L ^= T; \
ROR(R, 14); \
T = L; \
L ^= R; \
L &= 0xcccccccc; \
R ^= L; \
L ^= T; \
ROL(R, 6); \
T = L; \
L ^= R; \
L &= 0xff00ff00; \
R ^= L; \
L ^= T; \
ROR(R, 7); \
T = L; \
L ^= R; \
L &= 0xaaaaaaaa; \
R ^= L; \
L ^= T; \
ROL(L, 1);
#define FP(L, R, T) \
ROR(L, 1); \
T = L; \
L ^= R; \
L &= 0xaaaaaaaa; \
R ^= L; \
L ^= T; \
ROL(R, 7); \
T = L; \
L ^= R; \
L &= 0xff00ff00; \
R ^= L; \
L ^= T; \
ROR(R, 6); \
T = L; \
L ^= R; \
L &= 0xcccccccc; \
R ^= L; \
L ^= T; \
ROL(R, 14); \
T = L; \
L ^= R; \
L &= 0xffff0000; \
R ^= L; \
L ^= T; \
ROR(R, 12); \
T = L; \
L ^= R; \
L &= 0xf0f0f0f0; \
R ^= L; \
L ^= T; \
ROR(R, 4);
#define ROUND(L, R, A, B, K, d) \
B = K[0]; A = K[1]; K += d; \
B ^= R; A ^= R; \
B &= 0x3f3f3f3f; ROR(A, 4); \
L ^= S8[0xff & B]; A &= 0x3f3f3f3f; \
L ^= S6[0xff & (B >> 8)]; B >>= 16; \
L ^= S7[0xff & A]; \
L ^= S5[0xff & (A >> 8)]; A >>= 16; \
L ^= S4[0xff & B]; \
L ^= S2[0xff & (B >> 8)]; \
L ^= S3[0xff & A]; \
L ^= S1[0xff & (A >> 8)];
/*
* PC2 lookup tables are organized as 2 consecutive sets of 4 interleaved
* tables of 128 elements. One set is for C_i and the other for D_i, while
* the 4 interleaved tables correspond to four 7-bit subsets of C_i or D_i.
*
* After PC1 each of the variables a,b,c,d contains a 7 bit subset of C_i
* or D_i in bits 7-1 (bit 0 being the least significant).
*/
#define T1(x) pt[2 * (x) + 0]
#define T2(x) pt[2 * (x) + 1]
#define T3(x) pt[2 * (x) + 2]
#define T4(x) pt[2 * (x) + 3]
#define DES_PC2(a, b, c, d) (T4(d) | T3(c) | T2(b) | T1(a))
/*
* Encryption key expansion
*
* RFC2451: Weak key checks SHOULD be performed.
*
* FIPS 74:
*
* Keys having duals are keys which produce all zeros, all ones, or
* alternating zero-one patterns in the C and D registers after Permuted
* Choice 1 has operated on the key.
*
*/
static unsigned long des_ekey(u32 *pe, const u8 *k)
{
/* K&R: long is at least 32 bits */
unsigned long a, b, c, d, w;
const u32 *pt = pc2;
d = k[4]; d &= 0x0e; d <<= 4; d |= k[0] & 0x1e; d = pc1[d];
c = k[5]; c &= 0x0e; c <<= 4; c |= k[1] & 0x1e; c = pc1[c];
b = k[6]; b &= 0x0e; b <<= 4; b |= k[2] & 0x1e; b = pc1[b];
a = k[7]; a &= 0x0e; a <<= 4; a |= k[3] & 0x1e; a = pc1[a];
pe[15 * 2 + 0] = DES_PC2(a, b, c, d); d = rs[d];
pe[14 * 2 + 0] = DES_PC2(d, a, b, c); c = rs[c]; b = rs[b];
pe[13 * 2 + 0] = DES_PC2(b, c, d, a); a = rs[a]; d = rs[d];
pe[12 * 2 + 0] = DES_PC2(d, a, b, c); c = rs[c]; b = rs[b];
pe[11 * 2 + 0] = DES_PC2(b, c, d, a); a = rs[a]; d = rs[d];
pe[10 * 2 + 0] = DES_PC2(d, a, b, c); c = rs[c]; b = rs[b];
pe[ 9 * 2 + 0] = DES_PC2(b, c, d, a); a = rs[a]; d = rs[d];
pe[ 8 * 2 + 0] = DES_PC2(d, a, b, c); c = rs[c];
pe[ 7 * 2 + 0] = DES_PC2(c, d, a, b); b = rs[b]; a = rs[a];
pe[ 6 * 2 + 0] = DES_PC2(a, b, c, d); d = rs[d]; c = rs[c];
pe[ 5 * 2 + 0] = DES_PC2(c, d, a, b); b = rs[b]; a = rs[a];
pe[ 4 * 2 + 0] = DES_PC2(a, b, c, d); d = rs[d]; c = rs[c];
pe[ 3 * 2 + 0] = DES_PC2(c, d, a, b); b = rs[b]; a = rs[a];
pe[ 2 * 2 + 0] = DES_PC2(a, b, c, d); d = rs[d]; c = rs[c];
pe[ 1 * 2 + 0] = DES_PC2(c, d, a, b); b = rs[b];
pe[ 0 * 2 + 0] = DES_PC2(b, c, d, a);
/* Check if first half is weak */
w = (a ^ c) | (b ^ d) | (rs[a] ^ c) | (b ^ rs[d]);
/* Skip to next table set */
pt += 512;
d = k[0]; d &= 0xe0; d >>= 4; d |= k[4] & 0xf0; d = pc1[d + 1];
c = k[1]; c &= 0xe0; c >>= 4; c |= k[5] & 0xf0; c = pc1[c + 1];
b = k[2]; b &= 0xe0; b >>= 4; b |= k[6] & 0xf0; b = pc1[b + 1];
a = k[3]; a &= 0xe0; a >>= 4; a |= k[7] & 0xf0; a = pc1[a + 1];
/* Check if second half is weak */
w |= (a ^ c) | (b ^ d) | (rs[a] ^ c) | (b ^ rs[d]);
pe[15 * 2 + 1] = DES_PC2(a, b, c, d); d = rs[d];
pe[14 * 2 + 1] = DES_PC2(d, a, b, c); c = rs[c]; b = rs[b];
pe[13 * 2 + 1] = DES_PC2(b, c, d, a); a = rs[a]; d = rs[d];
pe[12 * 2 + 1] = DES_PC2(d, a, b, c); c = rs[c]; b = rs[b];
pe[11 * 2 + 1] = DES_PC2(b, c, d, a); a = rs[a]; d = rs[d];
pe[10 * 2 + 1] = DES_PC2(d, a, b, c); c = rs[c]; b = rs[b];
pe[ 9 * 2 + 1] = DES_PC2(b, c, d, a); a = rs[a]; d = rs[d];
pe[ 8 * 2 + 1] = DES_PC2(d, a, b, c); c = rs[c];
pe[ 7 * 2 + 1] = DES_PC2(c, d, a, b); b = rs[b]; a = rs[a];
pe[ 6 * 2 + 1] = DES_PC2(a, b, c, d); d = rs[d]; c = rs[c];
pe[ 5 * 2 + 1] = DES_PC2(c, d, a, b); b = rs[b]; a = rs[a];
pe[ 4 * 2 + 1] = DES_PC2(a, b, c, d); d = rs[d]; c = rs[c];
pe[ 3 * 2 + 1] = DES_PC2(c, d, a, b); b = rs[b]; a = rs[a];
pe[ 2 * 2 + 1] = DES_PC2(a, b, c, d); d = rs[d]; c = rs[c];
pe[ 1 * 2 + 1] = DES_PC2(c, d, a, b); b = rs[b];
pe[ 0 * 2 + 1] = DES_PC2(b, c, d, a);
/* Fixup: 2413 5768 -> 1357 2468 */
for (d = 0; d < 16; ++d) {
a = pe[2 * d];
b = pe[2 * d + 1];
c = a ^ b;
c &= 0xffff0000;
a ^= c;
b ^= c;
ROL(b, 18);
pe[2 * d] = a;
pe[2 * d + 1] = b;
}
/* Zero if weak key */
return w;
}
int des_expand_key(struct des_ctx *ctx, const u8 *key, unsigned int keylen)
{
if (keylen != DES_KEY_SIZE)
return -EINVAL;
return des_ekey(ctx->expkey, key) ? 0 : -ENOKEY;
}
EXPORT_SYMBOL_GPL(des_expand_key);
/*
* Decryption key expansion
*
* No weak key checking is performed, as this is only used by triple DES
*
*/
static void dkey(u32 *pe, const u8 *k)
{
/* K&R: long is at least 32 bits */
unsigned long a, b, c, d;
const u32 *pt = pc2;
d = k[4]; d &= 0x0e; d <<= 4; d |= k[0] & 0x1e; d = pc1[d];
c = k[5]; c &= 0x0e; c <<= 4; c |= k[1] & 0x1e; c = pc1[c];
b = k[6]; b &= 0x0e; b <<= 4; b |= k[2] & 0x1e; b = pc1[b];
a = k[7]; a &= 0x0e; a <<= 4; a |= k[3] & 0x1e; a = pc1[a];
pe[ 0 * 2] = DES_PC2(a, b, c, d); d = rs[d];
pe[ 1 * 2] = DES_PC2(d, a, b, c); c = rs[c]; b = rs[b];
pe[ 2 * 2] = DES_PC2(b, c, d, a); a = rs[a]; d = rs[d];
pe[ 3 * 2] = DES_PC2(d, a, b, c); c = rs[c]; b = rs[b];
pe[ 4 * 2] = DES_PC2(b, c, d, a); a = rs[a]; d = rs[d];
pe[ 5 * 2] = DES_PC2(d, a, b, c); c = rs[c]; b = rs[b];
pe[ 6 * 2] = DES_PC2(b, c, d, a); a = rs[a]; d = rs[d];
pe[ 7 * 2] = DES_PC2(d, a, b, c); c = rs[c];
pe[ 8 * 2] = DES_PC2(c, d, a, b); b = rs[b]; a = rs[a];
pe[ 9 * 2] = DES_PC2(a, b, c, d); d = rs[d]; c = rs[c];
pe[10 * 2] = DES_PC2(c, d, a, b); b = rs[b]; a = rs[a];
pe[11 * 2] = DES_PC2(a, b, c, d); d = rs[d]; c = rs[c];
pe[12 * 2] = DES_PC2(c, d, a, b); b = rs[b]; a = rs[a];
pe[13 * 2] = DES_PC2(a, b, c, d); d = rs[d]; c = rs[c];
pe[14 * 2] = DES_PC2(c, d, a, b); b = rs[b];
pe[15 * 2] = DES_PC2(b, c, d, a);
/* Skip to next table set */
pt += 512;
d = k[0]; d &= 0xe0; d >>= 4; d |= k[4] & 0xf0; d = pc1[d + 1];
c = k[1]; c &= 0xe0; c >>= 4; c |= k[5] & 0xf0; c = pc1[c + 1];
b = k[2]; b &= 0xe0; b >>= 4; b |= k[6] & 0xf0; b = pc1[b + 1];
a = k[3]; a &= 0xe0; a >>= 4; a |= k[7] & 0xf0; a = pc1[a + 1];
pe[ 0 * 2 + 1] = DES_PC2(a, b, c, d); d = rs[d];
pe[ 1 * 2 + 1] = DES_PC2(d, a, b, c); c = rs[c]; b = rs[b];
pe[ 2 * 2 + 1] = DES_PC2(b, c, d, a); a = rs[a]; d = rs[d];
pe[ 3 * 2 + 1] = DES_PC2(d, a, b, c); c = rs[c]; b = rs[b];
pe[ 4 * 2 + 1] = DES_PC2(b, c, d, a); a = rs[a]; d = rs[d];
pe[ 5 * 2 + 1] = DES_PC2(d, a, b, c); c = rs[c]; b = rs[b];
pe[ 6 * 2 + 1] = DES_PC2(b, c, d, a); a = rs[a]; d = rs[d];
pe[ 7 * 2 + 1] = DES_PC2(d, a, b, c); c = rs[c];
pe[ 8 * 2 + 1] = DES_PC2(c, d, a, b); b = rs[b]; a = rs[a];
pe[ 9 * 2 + 1] = DES_PC2(a, b, c, d); d = rs[d]; c = rs[c];
pe[10 * 2 + 1] = DES_PC2(c, d, a, b); b = rs[b]; a = rs[a];
pe[11 * 2 + 1] = DES_PC2(a, b, c, d); d = rs[d]; c = rs[c];
pe[12 * 2 + 1] = DES_PC2(c, d, a, b); b = rs[b]; a = rs[a];
pe[13 * 2 + 1] = DES_PC2(a, b, c, d); d = rs[d]; c = rs[c];
pe[14 * 2 + 1] = DES_PC2(c, d, a, b); b = rs[b];
pe[15 * 2 + 1] = DES_PC2(b, c, d, a);
/* Fixup: 2413 5768 -> 1357 2468 */
for (d = 0; d < 16; ++d) {
a = pe[2 * d];
b = pe[2 * d + 1];
c = a ^ b;
c &= 0xffff0000;
a ^= c;
b ^= c;
ROL(b, 18);
pe[2 * d] = a;
pe[2 * d + 1] = b;
}
}
void des_encrypt(const struct des_ctx *ctx, u8 *dst, const u8 *src)
{
const u32 *K = ctx->expkey;
u32 L, R, A, B;
int i;
L = get_unaligned_le32(src);
R = get_unaligned_le32(src + 4);
IP(L, R, A);
for (i = 0; i < 8; i++) {
ROUND(L, R, A, B, K, 2);
ROUND(R, L, A, B, K, 2);
}
FP(R, L, A);
put_unaligned_le32(R, dst);
put_unaligned_le32(L, dst + 4);
}
EXPORT_SYMBOL_GPL(des_encrypt);
void des_decrypt(const struct des_ctx *ctx, u8 *dst, const u8 *src)
{
const u32 *K = ctx->expkey + DES_EXPKEY_WORDS - 2;
u32 L, R, A, B;
int i;
L = get_unaligned_le32(src);
R = get_unaligned_le32(src + 4);
IP(L, R, A);
for (i = 0; i < 8; i++) {
ROUND(L, R, A, B, K, -2);
ROUND(R, L, A, B, K, -2);
}
FP(R, L, A);
put_unaligned_le32(R, dst);
put_unaligned_le32(L, dst + 4);
}
EXPORT_SYMBOL_GPL(des_decrypt);
int des3_ede_expand_key(struct des3_ede_ctx *ctx, const u8 *key,
unsigned int keylen)
{
u32 *pe = ctx->expkey;
int err;
if (keylen != DES3_EDE_KEY_SIZE)
return -EINVAL;
err = des3_ede_verify_key(key, keylen, true);
if (err && err != -ENOKEY)
return err;
des_ekey(pe, key); pe += DES_EXPKEY_WORDS; key += DES_KEY_SIZE;
dkey(pe, key); pe += DES_EXPKEY_WORDS; key += DES_KEY_SIZE;
des_ekey(pe, key);
return err;
}
EXPORT_SYMBOL_GPL(des3_ede_expand_key);
void des3_ede_encrypt(const struct des3_ede_ctx *dctx, u8 *dst, const u8 *src)
{
const u32 *K = dctx->expkey;
u32 L, R, A, B;
int i;
L = get_unaligned_le32(src);
R = get_unaligned_le32(src + 4);
IP(L, R, A);
for (i = 0; i < 8; i++) {
ROUND(L, R, A, B, K, 2);
ROUND(R, L, A, B, K, 2);
}
for (i = 0; i < 8; i++) {
ROUND(R, L, A, B, K, 2);
ROUND(L, R, A, B, K, 2);
}
for (i = 0; i < 8; i++) {
ROUND(L, R, A, B, K, 2);
ROUND(R, L, A, B, K, 2);
}
FP(R, L, A);
put_unaligned_le32(R, dst);
put_unaligned_le32(L, dst + 4);
}
EXPORT_SYMBOL_GPL(des3_ede_encrypt);
void des3_ede_decrypt(const struct des3_ede_ctx *dctx, u8 *dst, const u8 *src)
{
const u32 *K = dctx->expkey + DES3_EDE_EXPKEY_WORDS - 2;
u32 L, R, A, B;
int i;
L = get_unaligned_le32(src);
R = get_unaligned_le32(src + 4);
IP(L, R, A);
for (i = 0; i < 8; i++) {
ROUND(L, R, A, B, K, -2);
ROUND(R, L, A, B, K, -2);
}
for (i = 0; i < 8; i++) {
ROUND(R, L, A, B, K, -2);
ROUND(L, R, A, B, K, -2);
}
for (i = 0; i < 8; i++) {
ROUND(L, R, A, B, K, -2);
ROUND(R, L, A, B, K, -2);
}
FP(R, L, A);
put_unaligned_le32(R, dst);
put_unaligned_le32(L, dst + 4);
}
EXPORT_SYMBOL_GPL(des3_ede_decrypt);
MODULE_LICENSE("GPL");