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Minor tune-up in aes code
un-duplicate a check, and remove useless default case, mainly so that these lines don't appear as uncovered
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@ -565,10 +565,6 @@ int aes_setkey_enc( aes_context *ctx, const unsigned char *key,
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RK[15] = RK[7] ^ RK[14];
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}
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break;
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default:
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break;
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}
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return( 0 );
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@ -586,14 +582,6 @@ int aes_setkey_dec( aes_context *ctx, const unsigned char *key,
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uint32_t *SK;
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int ret;
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switch( keysize )
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{
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case 128: ctx->nr = 10; break;
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case 192: ctx->nr = 12; break;
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case 256: ctx->nr = 14; break;
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default : return( POLARSSL_ERR_AES_INVALID_KEY_LENGTH );
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}
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#if defined(POLARSSL_PADLOCK_C) && defined(PADLOCK_ALIGN16)
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if( aes_padlock_ace == -1 )
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aes_padlock_ace = padlock_supports( PADLOCK_ACE );
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@ -604,10 +592,12 @@ int aes_setkey_dec( aes_context *ctx, const unsigned char *key,
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#endif
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ctx->rk = RK = ctx->buf;
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ret = aes_setkey_enc( &cty, key, keysize );
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if( ret != 0 )
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/* Also checks keysize */
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if( ( ret = aes_setkey_enc( &cty, key, keysize ) ) != 0 )
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return( ret );
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ctx->nr = cty.nr;
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#if defined(POLARSSL_AESNI_C) && defined(POLARSSL_HAVE_X86_64)
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if( aesni_supports( POLARSSL_AESNI_AES ) )
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{
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