54 lines
1.1 KiB
C
54 lines
1.1 KiB
C
|
#include "crypto/axtls/crypto.h"
|
||
|
|
#include <string.h>
|
||
|
|
#include <gpxe/crypto.h>
|
||
|
|
#include <gpxe/aes.h>
|
||
|
|
|
||
|
|
static int aes_setkey ( void *ctx, const void *key, size_t keylen ) {
|
||
|
|
AES_CTX *aesctx = ctx;
|
||
|
|
AES_MODE mode;
|
||
|
|
|
||
|
|
switch ( keylen ) {
|
||
|
|
case ( 128 / 8 ):
|
||
|
|
mode = AES_MODE_128;
|
||
|
|
break;
|
||
|
|
case ( 256 / 8 ):
|
||
|
|
mode = AES_MODE_256;
|
||
|
|
break;
|
||
|
|
default:
|
||
|
|
return -EINVAL;
|
||
|
|
}
|
||
|
|
|
||
|
|
AES_set_key ( aesctx, key, aesctx->iv, mode );
|
||
|
|
return 0;
|
||
|
|
}
|
||
|
|
|
||
|
|
static void aes_setiv ( void *ctx, const void *iv ) {
|
||
|
|
AES_CTX *aesctx = ctx;
|
||
|
|
|
||
|
|
memcpy ( aesctx->iv, iv, sizeof ( aesctx->iv ) );
|
||
|
|
}
|
||
|
|
|
||
|
|
static void aes_encrypt ( void *ctx, const void *data, void *dst,
|
||
|
|
size_t len ) {
|
||
|
|
AES_CTX *aesctx = ctx;
|
||
|
|
|
||
|
|
AES_cbc_encrypt ( aesctx, data, dst, len );
|
||
|
|
}
|
||
|
|
|
||
|
|
static void aes_decrypt ( void *ctx, const void *data, void *dst,
|
||
|
|
size_t len ) {
|
||
|
|
AES_CTX *aesctx = ctx;
|
||
|
|
|
||
|
|
AES_cbc_decrypt ( aesctx, data, dst, len );
|
||
|
|
}
|
||
|
|
|
||
|
|
struct crypto_algorithm aes_algorithm = {
|
||
|
|
.name = "aes",
|
||
|
|
.ctxsize = sizeof ( AES_CTX ),
|
||
|
|
.blocksize = 16,
|
||
|
|
.setkey = aes_setkey,
|
||
|
|
.setiv = aes_setiv,
|
||
|
|
.encode = aes_encrypt,
|
||
|
|
.decode = aes_decrypt,
|
||
|
|
};
|