1/* Aes.h -- AES encryption / decryption
22013-01-18 : Igor Pavlov : Public domain */
3
4#ifndef __AES_H
5#define __AES_H
6
7#include "7zTypes.h"
8
9EXTERN_C_BEGIN
10
11#define AES_BLOCK_SIZE 16
12
13/* Call AesGenTables one time before other AES functions */
14void AesGenTables(void);
15
16/* UInt32 pointers must be 16-byte aligned */
17
18/* 16-byte (4 * 32-bit words) blocks: 1 (IV) + 1 (keyMode) + 15 (AES-256 roundKeys) */
19#define AES_NUM_IVMRK_WORDS ((1 + 1 + 15) * 4)
20
21/* aes - 16-byte aligned pointer to keyMode+roundKeys sequence */
22/* keySize = 16 or 24 or 32 (bytes) */
23typedef void (MY_FAST_CALL *AES_SET_KEY_FUNC)(UInt32 *aes, const Byte *key, unsigned keySize);
24void MY_FAST_CALL Aes_SetKey_Enc(UInt32 *aes, const Byte *key, unsigned keySize);
25void MY_FAST_CALL Aes_SetKey_Dec(UInt32 *aes, const Byte *key, unsigned keySize);
26
27/* ivAes - 16-byte aligned pointer to iv+keyMode+roundKeys sequence: UInt32[AES_NUM_IVMRK_WORDS] */
28void AesCbc_Init(UInt32 *ivAes, const Byte *iv); /* iv size is AES_BLOCK_SIZE */
29/* data - 16-byte aligned pointer to data */
30/* numBlocks - the number of 16-byte blocks in data array */
31typedef void (MY_FAST_CALL *AES_CODE_FUNC)(UInt32 *ivAes, Byte *data, size_t numBlocks);
32extern AES_CODE_FUNC g_AesCbc_Encode;
33extern AES_CODE_FUNC g_AesCbc_Decode;
34extern AES_CODE_FUNC g_AesCtr_Code;
35
36EXTERN_C_END
37
38#endif
39