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Add arc4 support in the cipher layer

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This commit is contained in:
Manuel Pégourié-Gonnard
2013-08-28 13:50:42 +02:00
parent f451bac000
commit 37e230c022
6 changed files with 183 additions and 5 deletions
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29
library/cipher.c
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@ -36,6 +36,10 @@
#include <stdlib.h>
#if defined(POLARSSL_ARC4_C)
#define POLARSSL_CIPHER_MODE_STREAM
#endif
#if defined _MSC_VER && !defined strcasecmp
#define strcasecmp _stricmp
#endif
@ -61,6 +65,10 @@ static const int supported_ciphers[] = {
#endif /* defined(POLARSSL_AES_C) */
#if defined(POLARSSL_ARC4_C)
POLARSSL_CIPHER_ARC4_128,
#endif
#if defined(POLARSSL_CAMELLIA_C)
POLARSSL_CIPHER_CAMELLIA_128_CBC,
POLARSSL_CIPHER_CAMELLIA_192_CBC,
@ -279,6 +287,11 @@ const cipher_info_t *cipher_info_from_string( const char *cipher_name )
#endif /* defined(POLARSSL_CIPHER_MODE_CTR) */
#endif
#if defined(POLARSSL_ARC4_C)
if( !strcasecmp( "ARC4-128", cipher_name ) )
return( cipher_info_from_type( POLARSSL_CIPHER_ARC4_128 ) );
#endif
#if defined(POLARSSL_DES_C)
if( !strcasecmp( "DES-CBC", cipher_name ) )
return cipher_info_from_type( POLARSSL_CIPHER_DES_CBC );
@ -527,6 +540,21 @@ int cipher_update( cipher_context_t *ctx, const unsigned char *input, size_t ile
}
#endif
#if defined(POLARSSL_CIPHER_MODE_STREAM)
if( ctx->cipher_info->mode == POLARSSL_MODE_STREAM )
{
if( 0 != ( ret = ctx->cipher_info->base->stream_func( ctx->cipher_ctx,
ilen, input, output ) ) )
{
return ret;
}
*olen = ilen;
return 0;
}
#endif
return POLARSSL_ERR_CIPHER_FEATURE_UNAVAILABLE;
}
@ -697,6 +725,7 @@ int cipher_finish( cipher_context_t *ctx, unsigned char *output, size_t *olen)
if( POLARSSL_MODE_CFB == ctx->cipher_info->mode ||
POLARSSL_MODE_CTR == ctx->cipher_info->mode ||
POLARSSL_MODE_STREAM == ctx->cipher_info->mode ||
POLARSSL_MODE_NULL == ctx->cipher_info->mode )
{
return 0;