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[crypto] Add ECB block cipher mode (for debug and self-tests only)

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Signed-off-by: Michael Brown <mcb30@ipxe.org>
This commit is contained in:
Michael Brown
2015-07-27 02:48:49 +01:00
parent 1a30c20daf
commit 69891db8e2
4 changed files with 142 additions and 1 deletions
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1
src/include/ipxe/aes.h
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@@ -26,6 +26,7 @@ extern void axtls_aes_encrypt ( const AES_CTX *ctx, uint32_t *data );
extern void axtls_aes_decrypt ( const AES_CTX *ctx, uint32_t *data );
extern struct cipher_algorithm aes_algorithm;
extern struct cipher_algorithm aes_ecb_algorithm;
extern struct cipher_algorithm aes_cbc_algorithm;
int aes_wrap ( const void *kek, const void *src, void *dest, int nblk );

55
src/include/ipxe/ecb.h Normal file
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@@ -0,0 +1,55 @@
#ifndef _IPXE_ECB_H
#define _IPXE_ECB_H
/** @file
*
* Electronic codebook (ECB)
*
*/
FILE_LICENCE ( GPL2_OR_LATER_OR_UBDL );
#include <ipxe/crypto.h>
extern void ecb_encrypt ( void *ctx, const void *src, void *dst,
size_t len, struct cipher_algorithm *raw_cipher );
extern void ecb_decrypt ( void *ctx, const void *src, void *dst,
size_t len, struct cipher_algorithm *raw_cipher );
/**
* Create a cipher-block chaining mode of behaviour of an existing cipher
*
* @v _ecb_name Name for the new ECB cipher
* @v _ecb_cipher New cipher algorithm
* @v _raw_cipher Underlying cipher algorithm
* @v _raw_context Context structure for the underlying cipher
* @v _blocksize Cipher block size
*/
#define ECB_CIPHER( _ecb_name, _ecb_cipher, _raw_cipher, _raw_context, \
_blocksize ) \
static int _ecb_name ## _setkey ( void *ctx, const void *key, \
size_t keylen ) { \
return cipher_setkey ( &_raw_cipher, ctx, key, keylen ); \
} \
static void _ecb_name ## _setiv ( void *ctx, const void *iv ) { \
cipher_setiv ( &_raw_cipher, ctx, iv ); \
} \
static void _ecb_name ## _encrypt ( void *ctx, const void *src, \
void *dst, size_t len ) { \
ecb_encrypt ( ctx, src, dst, len, &_raw_cipher ); \
} \
static void _ecb_name ## _decrypt ( void *ctx, const void *src, \
void *dst, size_t len ) { \
ecb_decrypt ( ctx, src, dst, len, &_raw_cipher ); \
} \
struct cipher_algorithm _ecb_cipher = { \
.name = #_ecb_name, \
.ctxsize = sizeof ( _raw_context ), \
.blocksize = _blocksize, \
.setkey = _ecb_name ## _setkey, \
.setiv = _ecb_name ## _setiv, \
.encrypt = _ecb_name ## _encrypt, \
.decrypt = _ecb_name ## _decrypt, \
};
#endif /* _IPXE_ECB_H */