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f9ee197cff
git-svn-id: svn://svn.code.sf.net/p/axtls/code/trunk@116 9a5d90b5-6617-0410-8a86-bb477d3ed2e3
130 lines
3.8 KiB
C
130 lines
3.8 KiB
C
/*
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* Copyright(C) 2006 Cameron Rich
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*
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* This library is free software; you can redistribute it and/or modify
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* it under the terms of the GNU Lesser General Public License as published by
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* the Free Software Foundation; either version 2 of the License, or
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* (at your option) any later version.
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*
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* This library is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU Lesser General Public License for more details.
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*
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* You should have received a copy of the GNU Lesser General Public License
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* along with this library; if not, write to the Free Software
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* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
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*/
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/**
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* @file crypto.h
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*/
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#ifndef HEADER_CRYPTO_H
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#define HEADER_CRYPTO_H
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#ifdef __cplusplus
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extern "C" {
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#endif
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#include "os_port.h"
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/**************************************************************************
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* AES declarations
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**************************************************************************/
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#define AES_MAXROUNDS 14
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#define AES_BLOCKSIZE 16
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#define AES_IV_SIZE 16
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typedef struct aes_key_st
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{
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uint16_t rounds;
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uint16_t key_size;
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uint32_t ks[(AES_MAXROUNDS+1)*8];
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uint8_t iv[AES_IV_SIZE];
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} AES_CTX;
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typedef enum
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{
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AES_MODE_128,
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AES_MODE_256
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} AES_MODE;
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void AES_set_key(AES_CTX *ctx, const uint8_t *key,
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const uint8_t *iv, AES_MODE mode);
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void AES_cbc_encrypt(AES_CTX *ctx, const uint8_t *msg,
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uint8_t *out, int length);
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void AES_cbc_decrypt(AES_CTX *ks, const uint8_t *in, uint8_t *out, int length);
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void AES_convert_key(AES_CTX *ctx);
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/**************************************************************************
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* RC4 declarations
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**************************************************************************/
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typedef struct
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{
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uint8_t x, y, m[256];
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} RC4_CTX;
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void RC4_setup(RC4_CTX *s, const uint8_t *key, int length);
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void RC4_crypt(RC4_CTX *s, const uint8_t *msg, uint8_t *data, int length);
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/**************************************************************************
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* SHA1 declarations
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**************************************************************************/
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#define SHA1_SIZE 20
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/*
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* This structure will hold context information for the SHA-1
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* hashing operation
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*/
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typedef struct
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{
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uint32_t Intermediate_Hash[SHA1_SIZE/4]; /* Message Digest */
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uint32_t Length_Low; /* Message length in bits */
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uint32_t Length_High; /* Message length in bits */
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uint16_t Message_Block_Index; /* Index into message block array */
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uint8_t Message_Block[64]; /* 512-bit message blocks */
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} SHA1_CTX;
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void SHA1_Init(SHA1_CTX *);
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void SHA1_Update(SHA1_CTX *, const uint8_t * msg, int len);
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void SHA1_Final(uint8_t *digest, SHA1_CTX *);
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/**************************************************************************
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* MD5 declarations
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**************************************************************************/
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/* MD5 context. */
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#define MD5_SIZE 16
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typedef struct
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{
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uint32_t state[4]; /* state (ABCD) */
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uint32_t count[2]; /* number of bits, modulo 2^64 (lsb first) */
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uint8_t buffer[64]; /* input buffer */
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} MD5_CTX;
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EXP_FUNC void STDCALL MD5_Init(MD5_CTX *);
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EXP_FUNC void STDCALL MD5_Update(MD5_CTX *, const uint8_t *msg, int len);
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EXP_FUNC void STDCALL MD5_Final(uint8_t *digest, MD5_CTX *);
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/**************************************************************************
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* HMAC declarations
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**************************************************************************/
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void hmac_md5(const uint8_t *msg, int length, const uint8_t *key,
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int key_len, uint8_t *digest);
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void hmac_sha1(const uint8_t *msg, int length, const uint8_t *key,
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int key_len, uint8_t *digest);
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#ifdef __cplusplus
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}
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#endif
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#endif
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