2007-01-31 19:09:20 +01:00
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#include "crypto/axtls/crypto.h"
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#include <string.h>
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2007-07-24 18:11:31 +02:00
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#include <errno.h>
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2007-01-31 19:09:20 +01:00
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#include <gpxe/crypto.h>
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#include <gpxe/aes.h>
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2009-02-18 22:25:14 +01:00
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static int aes_cbc_setkey ( void *ctx, const void *key, size_t keylen ) {
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2007-01-31 19:09:20 +01:00
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AES_CTX *aesctx = ctx;
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AES_MODE mode;
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switch ( keylen ) {
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case ( 128 / 8 ):
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mode = AES_MODE_128;
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break;
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case ( 256 / 8 ):
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mode = AES_MODE_256;
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break;
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default:
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return -EINVAL;
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}
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AES_set_key ( aesctx, key, aesctx->iv, mode );
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return 0;
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}
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2009-02-18 22:25:14 +01:00
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static void aes_cbc_setiv ( void *ctx, const void *iv ) {
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2007-01-31 19:09:20 +01:00
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AES_CTX *aesctx = ctx;
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memcpy ( aesctx->iv, iv, sizeof ( aesctx->iv ) );
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}
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2009-02-18 22:25:14 +01:00
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static void aes_cbc_encrypt ( void *ctx, const void *data, void *dst,
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size_t len ) {
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2007-01-31 19:09:20 +01:00
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AES_CTX *aesctx = ctx;
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AES_cbc_encrypt ( aesctx, data, dst, len );
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}
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2009-02-18 22:25:14 +01:00
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static void aes_cbc_decrypt ( void *ctx, const void *data, void *dst,
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size_t len ) {
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2007-01-31 19:09:20 +01:00
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AES_CTX *aesctx = ctx;
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AES_cbc_decrypt ( aesctx, data, dst, len );
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}
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2009-02-18 22:25:14 +01:00
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struct crypto_algorithm aes_cbc_algorithm = {
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.name = "aes_cbc",
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2007-01-31 19:09:20 +01:00
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.ctxsize = sizeof ( AES_CTX ),
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.blocksize = 16,
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2009-02-18 22:25:14 +01:00
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.setkey = aes_cbc_setkey,
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.setiv = aes_cbc_setiv,
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.encode = aes_cbc_encrypt,
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.decode = aes_cbc_decrypt,
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2007-01-31 19:09:20 +01:00
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};
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