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Code

sess_crypt_blob can only crypt blobs whose size divides by 8

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Signed-off-by: Isaac Boukris <iboukris@samba.org>
Reviewed-by: Andrew Bartlett <abartlet@samba.org>
This commit is contained in:
Isaac Boukris 2019-11-21 15:13:19 +01:00 committed by Andrew Bartlett
parent a75ca8d5d5
commit b5d8f1f78a
1 changed files with 6 additions and 3 deletions
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9
libcli/auth/session.c
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@ -34,13 +34,16 @@ int sess_crypt_blob(DATA_BLOB *out, const DATA_BLOB *in, const DATA_BLOB *sessio
{
int i, k, rc;
if (in->length % 8 != 0) {
return GNUTLS_E_INVALID_REQUEST;
}
for (i=0,k=0;
i<in->length;
i += 8, k += 7) {
uint8_t bin[8], bout[8], key[7];
memset(bin, 0, 8);
memcpy(bin, &in->data[i], MIN(8, in->length-i));
memcpy(bin, &in->data[i], 8);
if (k + 7 > session_key->length) {
k = (session_key->length - k);
@ -52,7 +55,7 @@ int sess_crypt_blob(DATA_BLOB *out, const DATA_BLOB *in, const DATA_BLOB *sessio
return rc;
}
memcpy(&out->data[i], bout, MIN(8, in->length-i));
memcpy(&out->data[i], bout, 8);
}
return 0;
}