1 #ifndef _IPXE_ECB_H 2 #define _IPXE_ECB_H 3 4 /** @file 5 * 6 * Electronic codebook (ECB) 7 * 8 */ 9 10 FILE_LICENCE ( GPL2_OR_LATER_OR_UBDL ); 11 12 #include <ipxe/crypto.h> 13 14 extern void ecb_encrypt ( void *ctx, const void *src, void *dst, 15 size_t len, struct cipher_algorithm *raw_cipher ); 16 extern void ecb_decrypt ( void *ctx, const void *src, void *dst, 17 size_t len, struct cipher_algorithm *raw_cipher ); 18 19 /** 20 * Create a cipher-block chaining mode of behaviour of an existing cipher 21 * 22 * @v _ecb_name Name for the new ECB cipher 23 * @v _ecb_cipher New cipher algorithm 24 * @v _raw_cipher Underlying cipher algorithm 25 * @v _raw_context Context structure for the underlying cipher 26 * @v _blocksize Cipher block size 27 */ 28 #define ECB_CIPHER( _ecb_name, _ecb_cipher, _raw_cipher, _raw_context, \ 29 _blocksize ) \ 30 static int _ecb_name ## _setkey ( void *ctx, const void *key, \ 31 size_t keylen ) { \ 32 return cipher_setkey ( &_raw_cipher, ctx, key, keylen ); \ 33 } \ 34 static void _ecb_name ## _setiv ( void *ctx, const void *iv ) { \ 35 cipher_setiv ( &_raw_cipher, ctx, iv ); \ 36 } \ 37 static void _ecb_name ## _encrypt ( void *ctx, const void *src, \ 38 void *dst, size_t len ) { \ 39 ecb_encrypt ( ctx, src, dst, len, &_raw_cipher ); \ 40 } \ 41 static void _ecb_name ## _decrypt ( void *ctx, const void *src, \ 42 void *dst, size_t len ) { \ 43 ecb_decrypt ( ctx, src, dst, len, &_raw_cipher ); \ 44 } \ 45 struct cipher_algorithm _ecb_cipher = { \ 46 .name = #_ecb_name, \ 47 .ctxsize = sizeof ( _raw_context ), \ 48 .blocksize = _blocksize, \ 49 .setkey = _ecb_name ## _setkey, \ 50 .setiv = _ecb_name ## _setiv, \ 51 .encrypt = _ecb_name ## _encrypt, \ 52 .decrypt = _ecb_name ## _decrypt, \ 53 }; 54 55 #endif /* _IPXE_ECB_H */ 56