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/*
* Cryptographic API .
*
* SHA - 3 , as specified in
* http : //nvlpubs.nist.gov/nistpubs/FIPS/NIST.FIPS.202.pdf
*
* SHA - 3 code by Jeff Garzik < jeff @ garzik . org >
2018-01-19 15:04:34 +03:00
* Ard Biesheuvel < ard . biesheuvel @ linaro . org >
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*
* This program is free software ; you can redistribute it and / or modify it
* under the terms of the GNU General Public License as published by the Free
* Software Foundation ; either version 2 of the License , or ( at your option ) •
* any later version .
*
*/
# include <crypto/internal/hash.h>
# include <linux/init.h>
# include <linux/module.h>
# include <linux/types.h>
# include <crypto/sha3.h>
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# include <asm/unaligned.h>
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crypto: sha3-generic - deal with oversize stack frames
As reported by kbuild test robot, the optimized SHA3 C implementation
compiles to mn10300 code that uses a disproportionate amount of stack
space, i.e.,
crypto/sha3_generic.c: In function 'keccakf':
crypto/sha3_generic.c:147:1: warning: the frame size of 1232 bytes is larger than 1024 bytes [-Wframe-larger-than=]
As kindly diagnosed by Arnd, this does not only occur when building for
the mn10300 architecture (which is what the report was about) but also
for h8300, and builds for other 32-bit architectures show an increase in
stack space utilization as well.
Given that SHA3 operates on 64-bit quantities, and keeps a state matrix
of 25 64-bit words, it is not surprising that 32-bit architectures with
few general purpose registers are impacted the most by this, and it is
therefore reasonable to implement a workaround that distinguishes between
32-bit and 64-bit architectures.
Arnd figured out that taking the round calculation out of the loop, and
inlining it explicitly but only on 64-bit architectures preserves most
of the performance gain achieved by the rewrite, and also gets rid of
the excessive use of stack space.
Reported-by: kbuild test robot <fengguang.wu@intel.com>
Suggested-by: Arnd Bergmann <arnd@arndb.de>
Signed-off-by: Ard Biesheuvel <ard.biesheuvel@linaro.org>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
2018-01-27 12:18:32 +03:00
/*
* On some 32 - bit architectures ( mn10300 and h8300 ) , GCC ends up using
* over 1 KB of stack if we inline the round calculation into the loop
* in keccakf ( ) . On the other hand , on 64 - bit architectures with plenty
* of [ 64 - bit wide ] general purpose registers , not inlining it severely
* hurts performance . So let ' s use 64 - bitness as a heuristic to decide
* whether to inline or not .
*/
# ifdef CONFIG_64BIT
# define SHA3_INLINE inline
# else
# define SHA3_INLINE noinline
# endif
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# define KECCAK_ROUNDS 24
static const u64 keccakf_rndc [ 24 ] = {
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0x0000000000000001ULL , 0x0000000000008082ULL , 0x800000000000808aULL ,
0x8000000080008000ULL , 0x000000000000808bULL , 0x0000000080000001ULL ,
0x8000000080008081ULL , 0x8000000000008009ULL , 0x000000000000008aULL ,
0x0000000000000088ULL , 0x0000000080008009ULL , 0x000000008000000aULL ,
0x000000008000808bULL , 0x800000000000008bULL , 0x8000000000008089ULL ,
0x8000000000008003ULL , 0x8000000000008002ULL , 0x8000000000000080ULL ,
0x000000000000800aULL , 0x800000008000000aULL , 0x8000000080008081ULL ,
0x8000000000008080ULL , 0x0000000080000001ULL , 0x8000000080008008ULL
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} ;
/* update the state with given number of rounds */
crypto: sha3-generic - deal with oversize stack frames
As reported by kbuild test robot, the optimized SHA3 C implementation
compiles to mn10300 code that uses a disproportionate amount of stack
space, i.e.,
crypto/sha3_generic.c: In function 'keccakf':
crypto/sha3_generic.c:147:1: warning: the frame size of 1232 bytes is larger than 1024 bytes [-Wframe-larger-than=]
As kindly diagnosed by Arnd, this does not only occur when building for
the mn10300 architecture (which is what the report was about) but also
for h8300, and builds for other 32-bit architectures show an increase in
stack space utilization as well.
Given that SHA3 operates on 64-bit quantities, and keeps a state matrix
of 25 64-bit words, it is not surprising that 32-bit architectures with
few general purpose registers are impacted the most by this, and it is
therefore reasonable to implement a workaround that distinguishes between
32-bit and 64-bit architectures.
Arnd figured out that taking the round calculation out of the loop, and
inlining it explicitly but only on 64-bit architectures preserves most
of the performance gain achieved by the rewrite, and also gets rid of
the excessive use of stack space.
Reported-by: kbuild test robot <fengguang.wu@intel.com>
Suggested-by: Arnd Bergmann <arnd@arndb.de>
Signed-off-by: Ard Biesheuvel <ard.biesheuvel@linaro.org>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
2018-01-27 12:18:32 +03:00
static SHA3_INLINE void keccakf_round ( u64 st [ 25 ] )
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{
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u64 t [ 5 ] , tt , bc [ 5 ] ;
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crypto: sha3-generic - deal with oversize stack frames
As reported by kbuild test robot, the optimized SHA3 C implementation
compiles to mn10300 code that uses a disproportionate amount of stack
space, i.e.,
crypto/sha3_generic.c: In function 'keccakf':
crypto/sha3_generic.c:147:1: warning: the frame size of 1232 bytes is larger than 1024 bytes [-Wframe-larger-than=]
As kindly diagnosed by Arnd, this does not only occur when building for
the mn10300 architecture (which is what the report was about) but also
for h8300, and builds for other 32-bit architectures show an increase in
stack space utilization as well.
Given that SHA3 operates on 64-bit quantities, and keeps a state matrix
of 25 64-bit words, it is not surprising that 32-bit architectures with
few general purpose registers are impacted the most by this, and it is
therefore reasonable to implement a workaround that distinguishes between
32-bit and 64-bit architectures.
Arnd figured out that taking the round calculation out of the loop, and
inlining it explicitly but only on 64-bit architectures preserves most
of the performance gain achieved by the rewrite, and also gets rid of
the excessive use of stack space.
Reported-by: kbuild test robot <fengguang.wu@intel.com>
Suggested-by: Arnd Bergmann <arnd@arndb.de>
Signed-off-by: Ard Biesheuvel <ard.biesheuvel@linaro.org>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
2018-01-27 12:18:32 +03:00
/* Theta */
bc [ 0 ] = st [ 0 ] ^ st [ 5 ] ^ st [ 10 ] ^ st [ 15 ] ^ st [ 20 ] ;
bc [ 1 ] = st [ 1 ] ^ st [ 6 ] ^ st [ 11 ] ^ st [ 16 ] ^ st [ 21 ] ;
bc [ 2 ] = st [ 2 ] ^ st [ 7 ] ^ st [ 12 ] ^ st [ 17 ] ^ st [ 22 ] ;
bc [ 3 ] = st [ 3 ] ^ st [ 8 ] ^ st [ 13 ] ^ st [ 18 ] ^ st [ 23 ] ;
bc [ 4 ] = st [ 4 ] ^ st [ 9 ] ^ st [ 14 ] ^ st [ 19 ] ^ st [ 24 ] ;
t [ 0 ] = bc [ 4 ] ^ rol64 ( bc [ 1 ] , 1 ) ;
t [ 1 ] = bc [ 0 ] ^ rol64 ( bc [ 2 ] , 1 ) ;
t [ 2 ] = bc [ 1 ] ^ rol64 ( bc [ 3 ] , 1 ) ;
t [ 3 ] = bc [ 2 ] ^ rol64 ( bc [ 4 ] , 1 ) ;
t [ 4 ] = bc [ 3 ] ^ rol64 ( bc [ 0 ] , 1 ) ;
st [ 0 ] ^ = t [ 0 ] ;
/* Rho Pi */
tt = st [ 1 ] ;
st [ 1 ] = rol64 ( st [ 6 ] ^ t [ 1 ] , 44 ) ;
st [ 6 ] = rol64 ( st [ 9 ] ^ t [ 4 ] , 20 ) ;
st [ 9 ] = rol64 ( st [ 22 ] ^ t [ 2 ] , 61 ) ;
st [ 22 ] = rol64 ( st [ 14 ] ^ t [ 4 ] , 39 ) ;
st [ 14 ] = rol64 ( st [ 20 ] ^ t [ 0 ] , 18 ) ;
st [ 20 ] = rol64 ( st [ 2 ] ^ t [ 2 ] , 62 ) ;
st [ 2 ] = rol64 ( st [ 12 ] ^ t [ 2 ] , 43 ) ;
st [ 12 ] = rol64 ( st [ 13 ] ^ t [ 3 ] , 25 ) ;
st [ 13 ] = rol64 ( st [ 19 ] ^ t [ 4 ] , 8 ) ;
st [ 19 ] = rol64 ( st [ 23 ] ^ t [ 3 ] , 56 ) ;
st [ 23 ] = rol64 ( st [ 15 ] ^ t [ 0 ] , 41 ) ;
st [ 15 ] = rol64 ( st [ 4 ] ^ t [ 4 ] , 27 ) ;
st [ 4 ] = rol64 ( st [ 24 ] ^ t [ 4 ] , 14 ) ;
st [ 24 ] = rol64 ( st [ 21 ] ^ t [ 1 ] , 2 ) ;
st [ 21 ] = rol64 ( st [ 8 ] ^ t [ 3 ] , 55 ) ;
st [ 8 ] = rol64 ( st [ 16 ] ^ t [ 1 ] , 45 ) ;
st [ 16 ] = rol64 ( st [ 5 ] ^ t [ 0 ] , 36 ) ;
st [ 5 ] = rol64 ( st [ 3 ] ^ t [ 3 ] , 28 ) ;
st [ 3 ] = rol64 ( st [ 18 ] ^ t [ 3 ] , 21 ) ;
st [ 18 ] = rol64 ( st [ 17 ] ^ t [ 2 ] , 15 ) ;
st [ 17 ] = rol64 ( st [ 11 ] ^ t [ 1 ] , 10 ) ;
st [ 11 ] = rol64 ( st [ 7 ] ^ t [ 2 ] , 6 ) ;
st [ 7 ] = rol64 ( st [ 10 ] ^ t [ 0 ] , 3 ) ;
st [ 10 ] = rol64 ( tt ^ t [ 1 ] , 1 ) ;
/* Chi */
bc [ 0 ] = ~ st [ 1 ] & st [ 2 ] ;
bc [ 1 ] = ~ st [ 2 ] & st [ 3 ] ;
bc [ 2 ] = ~ st [ 3 ] & st [ 4 ] ;
bc [ 3 ] = ~ st [ 4 ] & st [ 0 ] ;
bc [ 4 ] = ~ st [ 0 ] & st [ 1 ] ;
st [ 0 ] ^ = bc [ 0 ] ;
st [ 1 ] ^ = bc [ 1 ] ;
st [ 2 ] ^ = bc [ 2 ] ;
st [ 3 ] ^ = bc [ 3 ] ;
st [ 4 ] ^ = bc [ 4 ] ;
bc [ 0 ] = ~ st [ 6 ] & st [ 7 ] ;
bc [ 1 ] = ~ st [ 7 ] & st [ 8 ] ;
bc [ 2 ] = ~ st [ 8 ] & st [ 9 ] ;
bc [ 3 ] = ~ st [ 9 ] & st [ 5 ] ;
bc [ 4 ] = ~ st [ 5 ] & st [ 6 ] ;
st [ 5 ] ^ = bc [ 0 ] ;
st [ 6 ] ^ = bc [ 1 ] ;
st [ 7 ] ^ = bc [ 2 ] ;
st [ 8 ] ^ = bc [ 3 ] ;
st [ 9 ] ^ = bc [ 4 ] ;
bc [ 0 ] = ~ st [ 11 ] & st [ 12 ] ;
bc [ 1 ] = ~ st [ 12 ] & st [ 13 ] ;
bc [ 2 ] = ~ st [ 13 ] & st [ 14 ] ;
bc [ 3 ] = ~ st [ 14 ] & st [ 10 ] ;
bc [ 4 ] = ~ st [ 10 ] & st [ 11 ] ;
st [ 10 ] ^ = bc [ 0 ] ;
st [ 11 ] ^ = bc [ 1 ] ;
st [ 12 ] ^ = bc [ 2 ] ;
st [ 13 ] ^ = bc [ 3 ] ;
st [ 14 ] ^ = bc [ 4 ] ;
bc [ 0 ] = ~ st [ 16 ] & st [ 17 ] ;
bc [ 1 ] = ~ st [ 17 ] & st [ 18 ] ;
bc [ 2 ] = ~ st [ 18 ] & st [ 19 ] ;
bc [ 3 ] = ~ st [ 19 ] & st [ 15 ] ;
bc [ 4 ] = ~ st [ 15 ] & st [ 16 ] ;
st [ 15 ] ^ = bc [ 0 ] ;
st [ 16 ] ^ = bc [ 1 ] ;
st [ 17 ] ^ = bc [ 2 ] ;
st [ 18 ] ^ = bc [ 3 ] ;
st [ 19 ] ^ = bc [ 4 ] ;
bc [ 0 ] = ~ st [ 21 ] & st [ 22 ] ;
bc [ 1 ] = ~ st [ 22 ] & st [ 23 ] ;
bc [ 2 ] = ~ st [ 23 ] & st [ 24 ] ;
bc [ 3 ] = ~ st [ 24 ] & st [ 20 ] ;
bc [ 4 ] = ~ st [ 20 ] & st [ 21 ] ;
st [ 20 ] ^ = bc [ 0 ] ;
st [ 21 ] ^ = bc [ 1 ] ;
st [ 22 ] ^ = bc [ 2 ] ;
st [ 23 ] ^ = bc [ 3 ] ;
st [ 24 ] ^ = bc [ 4 ] ;
}
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static void __optimize ( " O3 " ) keccakf ( u64 st [ 25 ] )
crypto: sha3-generic - deal with oversize stack frames
As reported by kbuild test robot, the optimized SHA3 C implementation
compiles to mn10300 code that uses a disproportionate amount of stack
space, i.e.,
crypto/sha3_generic.c: In function 'keccakf':
crypto/sha3_generic.c:147:1: warning: the frame size of 1232 bytes is larger than 1024 bytes [-Wframe-larger-than=]
As kindly diagnosed by Arnd, this does not only occur when building for
the mn10300 architecture (which is what the report was about) but also
for h8300, and builds for other 32-bit architectures show an increase in
stack space utilization as well.
Given that SHA3 operates on 64-bit quantities, and keeps a state matrix
of 25 64-bit words, it is not surprising that 32-bit architectures with
few general purpose registers are impacted the most by this, and it is
therefore reasonable to implement a workaround that distinguishes between
32-bit and 64-bit architectures.
Arnd figured out that taking the round calculation out of the loop, and
inlining it explicitly but only on 64-bit architectures preserves most
of the performance gain achieved by the rewrite, and also gets rid of
the excessive use of stack space.
Reported-by: kbuild test robot <fengguang.wu@intel.com>
Suggested-by: Arnd Bergmann <arnd@arndb.de>
Signed-off-by: Ard Biesheuvel <ard.biesheuvel@linaro.org>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
2018-01-27 12:18:32 +03:00
{
int round ;
2016-06-17 08:00:35 +03:00
crypto: sha3-generic - deal with oversize stack frames
As reported by kbuild test robot, the optimized SHA3 C implementation
compiles to mn10300 code that uses a disproportionate amount of stack
space, i.e.,
crypto/sha3_generic.c: In function 'keccakf':
crypto/sha3_generic.c:147:1: warning: the frame size of 1232 bytes is larger than 1024 bytes [-Wframe-larger-than=]
As kindly diagnosed by Arnd, this does not only occur when building for
the mn10300 architecture (which is what the report was about) but also
for h8300, and builds for other 32-bit architectures show an increase in
stack space utilization as well.
Given that SHA3 operates on 64-bit quantities, and keeps a state matrix
of 25 64-bit words, it is not surprising that 32-bit architectures with
few general purpose registers are impacted the most by this, and it is
therefore reasonable to implement a workaround that distinguishes between
32-bit and 64-bit architectures.
Arnd figured out that taking the round calculation out of the loop, and
inlining it explicitly but only on 64-bit architectures preserves most
of the performance gain achieved by the rewrite, and also gets rid of
the excessive use of stack space.
Reported-by: kbuild test robot <fengguang.wu@intel.com>
Suggested-by: Arnd Bergmann <arnd@arndb.de>
Signed-off-by: Ard Biesheuvel <ard.biesheuvel@linaro.org>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
2018-01-27 12:18:32 +03:00
for ( round = 0 ; round < KECCAK_ROUNDS ; round + + ) {
keccakf_round ( st ) ;
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/* Iota */
st [ 0 ] ^ = keccakf_rndc [ round ] ;
}
}
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int crypto_sha3_init ( struct shash_desc * desc )
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{
struct sha3_state * sctx = shash_desc_ctx ( desc ) ;
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unsigned int digest_size = crypto_shash_digestsize ( desc - > tfm ) ;
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sctx - > rsiz = 200 - 2 * digest_size ;
sctx - > rsizw = sctx - > rsiz / 8 ;
sctx - > partial = 0 ;
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memset ( sctx - > st , 0 , sizeof ( sctx - > st ) ) ;
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return 0 ;
}
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EXPORT_SYMBOL ( crypto_sha3_init ) ;
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int crypto_sha3_update ( struct shash_desc * desc , const u8 * data ,
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unsigned int len )
{
struct sha3_state * sctx = shash_desc_ctx ( desc ) ;
unsigned int done ;
const u8 * src ;
done = 0 ;
src = data ;
if ( ( sctx - > partial + len ) > ( sctx - > rsiz - 1 ) ) {
if ( sctx - > partial ) {
done = - sctx - > partial ;
memcpy ( sctx - > buf + sctx - > partial , data ,
done + sctx - > rsiz ) ;
src = sctx - > buf ;
}
do {
unsigned int i ;
for ( i = 0 ; i < sctx - > rsizw ; i + + )
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sctx - > st [ i ] ^ = get_unaligned_le64 ( src + 8 * i ) ;
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keccakf ( sctx - > st ) ;
done + = sctx - > rsiz ;
src = data + done ;
} while ( done + ( sctx - > rsiz - 1 ) < len ) ;
sctx - > partial = 0 ;
}
memcpy ( sctx - > buf + sctx - > partial , src , len - done ) ;
sctx - > partial + = ( len - done ) ;
return 0 ;
}
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EXPORT_SYMBOL ( crypto_sha3_update ) ;
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int crypto_sha3_final ( struct shash_desc * desc , u8 * out )
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{
struct sha3_state * sctx = shash_desc_ctx ( desc ) ;
unsigned int i , inlen = sctx - > partial ;
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unsigned int digest_size = crypto_shash_digestsize ( desc - > tfm ) ;
__le64 * digest = ( __le64 * ) out ;
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sctx - > buf [ inlen + + ] = 0x06 ;
memset ( sctx - > buf + inlen , 0 , sctx - > rsiz - inlen ) ;
sctx - > buf [ sctx - > rsiz - 1 ] | = 0x80 ;
for ( i = 0 ; i < sctx - > rsizw ; i + + )
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sctx - > st [ i ] ^ = get_unaligned_le64 ( sctx - > buf + 8 * i ) ;
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keccakf ( sctx - > st ) ;
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for ( i = 0 ; i < digest_size / 8 ; i + + )
put_unaligned_le64 ( sctx - > st [ i ] , digest + + ) ;
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if ( digest_size & 4 )
put_unaligned_le32 ( sctx - > st [ i ] , ( __le32 * ) digest ) ;
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memset ( sctx , 0 , sizeof ( * sctx ) ) ;
return 0 ;
}
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EXPORT_SYMBOL ( crypto_sha3_final ) ;
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static struct shash_alg algs [ ] = { {
. digestsize = SHA3_224_DIGEST_SIZE ,
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. init = crypto_sha3_init ,
. update = crypto_sha3_update ,
. final = crypto_sha3_final ,
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. descsize = sizeof ( struct sha3_state ) ,
. base . cra_name = " sha3-224 " ,
. base . cra_driver_name = " sha3-224-generic " ,
. base . cra_flags = CRYPTO_ALG_TYPE_SHASH ,
. base . cra_blocksize = SHA3_224_BLOCK_SIZE ,
. base . cra_module = THIS_MODULE ,
} , {
. digestsize = SHA3_256_DIGEST_SIZE ,
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. init = crypto_sha3_init ,
. update = crypto_sha3_update ,
. final = crypto_sha3_final ,
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. descsize = sizeof ( struct sha3_state ) ,
. base . cra_name = " sha3-256 " ,
. base . cra_driver_name = " sha3-256-generic " ,
. base . cra_flags = CRYPTO_ALG_TYPE_SHASH ,
. base . cra_blocksize = SHA3_256_BLOCK_SIZE ,
. base . cra_module = THIS_MODULE ,
} , {
. digestsize = SHA3_384_DIGEST_SIZE ,
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. init = crypto_sha3_init ,
. update = crypto_sha3_update ,
. final = crypto_sha3_final ,
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. descsize = sizeof ( struct sha3_state ) ,
. base . cra_name = " sha3-384 " ,
. base . cra_driver_name = " sha3-384-generic " ,
. base . cra_flags = CRYPTO_ALG_TYPE_SHASH ,
. base . cra_blocksize = SHA3_384_BLOCK_SIZE ,
. base . cra_module = THIS_MODULE ,
} , {
. digestsize = SHA3_512_DIGEST_SIZE ,
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. init = crypto_sha3_init ,
. update = crypto_sha3_update ,
. final = crypto_sha3_final ,
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. descsize = sizeof ( struct sha3_state ) ,
. base . cra_name = " sha3-512 " ,
. base . cra_driver_name = " sha3-512-generic " ,
. base . cra_flags = CRYPTO_ALG_TYPE_SHASH ,
. base . cra_blocksize = SHA3_512_BLOCK_SIZE ,
. base . cra_module = THIS_MODULE ,
} } ;
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static int __init sha3_generic_mod_init ( void )
{
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return crypto_register_shashes ( algs , ARRAY_SIZE ( algs ) ) ;
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}
static void __exit sha3_generic_mod_fini ( void )
{
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crypto_unregister_shashes ( algs , ARRAY_SIZE ( algs ) ) ;
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}
module_init ( sha3_generic_mod_init ) ;
module_exit ( sha3_generic_mod_fini ) ;
MODULE_LICENSE ( " GPL " ) ;
MODULE_DESCRIPTION ( " SHA-3 Secure Hash Algorithm " ) ;
MODULE_ALIAS_CRYPTO ( " sha3-224 " ) ;
MODULE_ALIAS_CRYPTO ( " sha3-224-generic " ) ;
MODULE_ALIAS_CRYPTO ( " sha3-256 " ) ;
MODULE_ALIAS_CRYPTO ( " sha3-256-generic " ) ;
MODULE_ALIAS_CRYPTO ( " sha3-384 " ) ;
MODULE_ALIAS_CRYPTO ( " sha3-384-generic " ) ;
MODULE_ALIAS_CRYPTO ( " sha3-512 " ) ;
MODULE_ALIAS_CRYPTO ( " sha3-512-generic " ) ;
