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39 lines
1.3 KiB
C
39 lines
1.3 KiB
C
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/* Aes.h -- AES encryption / decryption
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2013-01-18 : Igor Pavlov : Public domain */
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#ifndef __AES_H
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#define __AES_H
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#include "7zTypes.h"
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EXTERN_C_BEGIN
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#define AES_BLOCK_SIZE 16
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/* Call AesGenTables one time before other AES functions */
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void AesGenTables(void);
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/* UInt32 pointers must be 16-byte aligned */
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/* 16-byte (4 * 32-bit words) blocks: 1 (IV) + 1 (keyMode) + 15 (AES-256 roundKeys) */
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#define AES_NUM_IVMRK_WORDS ((1 + 1 + 15) * 4)
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/* aes - 16-byte aligned pointer to keyMode+roundKeys sequence */
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/* keySize = 16 or 24 or 32 (bytes) */
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typedef void (MY_FAST_CALL *AES_SET_KEY_FUNC)(UInt32 *aes, const Byte *key, unsigned keySize);
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void MY_FAST_CALL Aes_SetKey_Enc(UInt32 *aes, const Byte *key, unsigned keySize);
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void MY_FAST_CALL Aes_SetKey_Dec(UInt32 *aes, const Byte *key, unsigned keySize);
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/* ivAes - 16-byte aligned pointer to iv+keyMode+roundKeys sequence: UInt32[AES_NUM_IVMRK_WORDS] */
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void AesCbc_Init(UInt32 *ivAes, const Byte *iv); /* iv size is AES_BLOCK_SIZE */
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/* data - 16-byte aligned pointer to data */
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/* numBlocks - the number of 16-byte blocks in data array */
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typedef void (MY_FAST_CALL *AES_CODE_FUNC)(UInt32 *ivAes, Byte *data, size_t numBlocks);
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extern AES_CODE_FUNC g_AesCbc_Encode;
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extern AES_CODE_FUNC g_AesCbc_Decode;
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extern AES_CODE_FUNC g_AesCtr_Code;
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EXTERN_C_END
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#endif
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