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GCM in the cipher layer, step 1

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- no support for additional data
- no support for tag
This commit is contained in:
Manuel Pégourié-Gonnard
2013-08-30 18:34:08 +02:00
parent b5e85885de
commit 07f8fa5a69
7 changed files with 225 additions and 7 deletions
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35
library/cipher_wrap.c
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@ -53,6 +53,10 @@
#include "polarssl/blowfish.h"
#endif
#if defined(POLARSSL_GCM_C)
#include "polarssl/gcm.h"
#endif
#if defined(POLARSSL_MEMORY_C)
#include "polarssl/memory.h"
#else
@ -235,6 +239,33 @@ const cipher_info_t aes_256_ctr_info = {
#endif /* POLARSSL_CIPHER_MODE_CTR */
#if defined(POLARSSL_GCM_C)
static void *gcm_ctx_alloc( void )
{
return polarssl_malloc( sizeof( gcm_context ) );
}
static void gcm_ctx_free( void *ctx )
{
polarssl_free( ctx );
}
static int gcm_setkey_wrap( void *ctx, const unsigned char *key, unsigned int key_length )
{
return gcm_init( (gcm_context *) ctx, key, key_length );
}
const cipher_base_t gcm_aes_info = {
POLARSSL_CIPHER_ID_AES,
NULL,
NULL,
NULL,
NULL,
gcm_setkey_wrap,
gcm_setkey_wrap,
gcm_ctx_alloc,
gcm_ctx_free,
};
const cipher_info_t aes_128_gcm_info = {
POLARSSL_CIPHER_AES_128_GCM,
POLARSSL_MODE_GCM,
@ -242,7 +273,7 @@ const cipher_info_t aes_128_gcm_info = {
"AES-128-GCM",
16,
16,
&aes_info
&gcm_aes_info
};
const cipher_info_t aes_256_gcm_info = {
@ -252,7 +283,7 @@ const cipher_info_t aes_256_gcm_info = {
"AES-256-GCM",
16,
16,
&aes_info
&gcm_aes_info
};
#endif /* POLARSSL_GCM_C */