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Minor tune-up in aes code

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un-duplicate a check, and remove useless default case, mainly so that these
lines don't appear as uncovered
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Manuel Pégourié-Gonnard 2014-05-28 21:52:59 +02:00 committed by Paul Bakker
parent e1ac0f8c5d
commit afd5a08e33
1 changed files with 4 additions and 14 deletions
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18
library/aes.c
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@ -565,10 +565,6 @@ int aes_setkey_enc( aes_context *ctx, const unsigned char *key,
RK[15] = RK[7] ^ RK[14]; RK[15] = RK[7] ^ RK[14];
} }
break; break;
default:
break;
} }
return( 0 ); return( 0 );
@ -586,14 +582,6 @@ int aes_setkey_dec( aes_context *ctx, const unsigned char *key,
uint32_t *SK; uint32_t *SK;
int ret; int ret;
switch( keysize )
{
case 128: ctx->nr = 10; break;
case 192: ctx->nr = 12; break;
case 256: ctx->nr = 14; break;
default : return( POLARSSL_ERR_AES_INVALID_KEY_LENGTH );
}
#if defined(POLARSSL_PADLOCK_C) && defined(PADLOCK_ALIGN16) #if defined(POLARSSL_PADLOCK_C) && defined(PADLOCK_ALIGN16)
if( aes_padlock_ace == -1 ) if( aes_padlock_ace == -1 )
aes_padlock_ace = padlock_supports( PADLOCK_ACE ); aes_padlock_ace = padlock_supports( PADLOCK_ACE );
@ -604,10 +592,12 @@ int aes_setkey_dec( aes_context *ctx, const unsigned char *key,
#endif #endif
ctx->rk = RK = ctx->buf; ctx->rk = RK = ctx->buf;
ret = aes_setkey_enc( &cty, key, keysize ); /* Also checks keysize */
if( ret != 0 ) if( ( ret = aes_setkey_enc( &cty, key, keysize ) ) != 0 )
return( ret ); return( ret );
ctx->nr = cty.nr;
#if defined(POLARSSL_AESNI_C) && defined(POLARSSL_HAVE_X86_64) #if defined(POLARSSL_AESNI_C) && defined(POLARSSL_HAVE_X86_64)
if( aesni_supports( POLARSSL_AESNI_AES ) ) if( aesni_supports( POLARSSL_AESNI_AES ) )
{ {