231 lines
7.7 KiB
C
231 lines
7.7 KiB
C
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/* hfcrypto.h
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*
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* Copyright (C) 2017 ShangHai High-flying Electronics Technology Co.,Ltd.
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*
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* This file is part of HSF.
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*
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*/
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#ifndef _HF_CRYPTO_H_
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#define _HF_CRYPTO_H_
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#ifdef __cplusplus
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extern "C" {
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#endif
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/**
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* @brief encrypt data with aes (ecb mode/128bit key).
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*
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* @param[in] key: the key of AES
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* data: the data want to encrypt
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* data_len: the length of data
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* @return[out] the length of encrypted data
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* @see None.
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* @note None.
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*/
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int HSF_API hfcrypto_aes_ecb_encrypt(const unsigned char *key, unsigned char *data, int data_len);
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/**
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* @brief decrypt data with aes (ecb mode/128bit key).
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*
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* @param[in] key: the key of AES
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* data: the data want to decrypt
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* data_len: the length of data
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* @return[out] the length of decrypted data
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* @see None.
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* @note None.
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*/
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int HSF_API hfcrypto_aes_ecb_decrypt(const unsigned char *key, unsigned char *data, int data_len);
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/**
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* @brief encrypt data with aes (cbc mode/128bit key).
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*
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* @param[in] key: the key of AES
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* iv: the initialization vector of AES
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* data: the data want to encrypt
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* data_len: the length of data
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* @return[out] the length of encrypted data
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* @see None.
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* @note None.
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*/
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int HSF_API hfcrypto_aes_cbc_encrypt(const unsigned char *key, const unsigned char *iv, unsigned char *data, int data_len);
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/**
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* @brief decrypt data with aes (cbc mode/128bit key).
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*
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* @param[in] key: the key of AES
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* iv: the initialization vector of AES
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* data: the data want to decrypt
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* data_len: the length of data
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* @return[out] the length of decrypted data
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* @see None.
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* @note None.
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*/
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int HSF_API hfcrypto_aes_cbc_decrypt(const unsigned char *key, const unsigned char *iv, unsigned char *data, int data_len);
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/**
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* @brief calculate the MD5 of the data.
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*
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* @param[in] data: the data want to calculate MD5
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* len: the length of data, in bytes
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* digest: store MD5, must > 16 bytes
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* @return[out] the length of MD5, in bytes
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* @see None.
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* @note None.
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*/
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int HSF_API hfcrypto_md5(const unsigned char *data, int len, unsigned char *digest);
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/**
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* @brief encode data as base64.
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*
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* @param[in] src: input byte array
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* srclength: size of input byte array
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* target: output byte array
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* targsize: size of output byte array
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* @return[out] returns the number of data bytes stored at the target, or -1 on error.
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* @see None.
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* @note encode data as base64, converts characters, three at a time,
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* starting at src into four base64 characters in the target area
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* until the entire input buffer is encoded.
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*/
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int HSF_API hfcrypto_base64_encode(char *src, uint32_t srclength, char *target, uint32_t targsize);
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/**
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* @brief decode Base64 data.
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*
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* @param[in] src: input byte array
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* target: output byte array
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* targsize: size of output byte array
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* @return[out] returns the number of data bytes stored at the target, or -1 on error.
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* @see None.
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* @note decode Base64 data, skips all whitespace anywhere. converts
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* characters, four at a time, starting at (or after) src from Base64
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* numbers into three 8 bit bytes in the target area..
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*/
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int HSF_API hfcrypto_base64_decode(char *src, char *target, uint32_t targsize);
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/**
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* @brief rsa public key operation (1024bit key).
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*
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* @param[in] key: the key of RSA
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* data: the data want to decrypt
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* data_len: the length of data
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* @return[out] the length of encrypted data
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* @see None.
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* @note None.
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*/
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// int HSF_API hfcrypto_rsa_public(const unsigned char *key, unsigned char *data, int data_len);
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/**
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* @brief HMAC-SHA1 algorithm.
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*
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* @param[in] key: the key of HMAC-SHA1
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* key_len: the length of key
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* data: the data want to calculate HMAC-SHA1
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* data_len: the length of data
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* mac: the hash (20 bytes)
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* @return[out] HF_SUCCESS-successfully, other value is failed
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* @see None.
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* @note None.
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*/
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int HSF_API hfcrypto_hmac_sha1(const unsigned char *key, int key_len, const unsigned char *data, int data_len, unsigned char *mac);
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/**
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* @brief AES CBC模式解密
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*
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* @param input 文本输入
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* @param input_len 输入文本长度
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* @param output 文本输出
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* @param output_len 文本输出最大长度
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* @param key 秘钥
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* @param key_len 秘钥长度
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* @param iv 初始化向量
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* @param iv_len 初始化向量长度
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* @return uint8_t 返回是否解密成功，0：不成功，1：成功
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*/
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uint8_t aes_cbc_decipher(uint8_t *input, uint32_t input_len,
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uint8_t *output, uint32_t output_len,
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uint8_t *key, uint32_t key_len,
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uint8_t *iv, uint32_t iv_len);
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#if 1
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#define Nb 4 //加解密数据块大小，固定为4
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// GF(2^8) 多项式
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#define BPOLY 0x1B //x^4 + x^3 + x^1 + x^0= 从右边开始算，bit0、bit1、bit3、bit4、为1，bit2、bit5、bit6、bit7为0，即00011011=0x1B
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//加密类型对应的密匙长度，单位bit
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typedef enum {
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AES128 = 128,
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AES192 = 192,
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AES256 = 256,
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} AESType_t;
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//加解密模式
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typedef enum {
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AES_MODE_ECB = 0, // 电子密码本模式
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AES_MODE_CBC = 1, // 密码分组链接模式
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} AESMode_t;
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typedef struct {
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int Nk; //用户不需要填充，密钥长度，单位字节, AES128:Nk=16、AES192:Nk=24、AES256:Nr=32
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int Nr; //用户不需要填充，加密的轮数 AES128:Nr=10、AES192:Nr=12、AES256:Nr=14
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AESType_t type;//用户需填充，关联AESType_t
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AESMode_t mode;//用户需填充，关联AESMode_t
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const void *key;//用户需填充，密匙
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const void *pIV;//用户需填充，初始化向量, 当mode=AES_MODE_CBC时需要设置，指向unsigned char IV[4*Nb];
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//AES拓展密匙, 空间大小 AES128:4*Nb*(10+1):4*Nb*(12+1)、AES256:4*Nb*(14+1)
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unsigned char expandKey[4*Nb*(14+1)];//用户不需要填充，[4*Nb*(Nr+1)]、这里按最大的AES256进行初始化
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} AESInfo_t;
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/*****************************************************************************
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* 函数名： AESInit
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* 功能描述： 初始化
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* 输入参数： aesInfoP -- 用户需要填充
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* 输出参数： 无。
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* 返回值： 无。
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*****************************************************************************/
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void AESInit(AESInfo_t *aesInfoP);
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/*****************************************************************************
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* 函数名： AESEncrypt
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* 功能描述： 加密数据
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* 输入参数： aesInfoP -- 包含key、加密方式等初始化信息
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* pPlainText -- 要加密的明文数据，其长度为dataLen字节。
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* dataLen -- 明文数据长度，以字节为单位
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* 输出参数： pCipherText -- 加密后的数据
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* 返回值： 解密后的数据长度。
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*****************************************************************************/
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unsigned int AESEncrypt(AESInfo_t *aesInfoP, const unsigned char *pPlainText, unsigned char *pCipherText, unsigned int dataLen);
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/*****************************************************************************
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* 函数名： AESDecrypt
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* 功能描述： 解密数据
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* 输入参数： aesInfoP -- 包含key、加密方式等初始化信息
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* pCipherText -- 要解密的密文
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* dataLen -- 密文数据长度，以字节为单位，必须是整倍数，AES128:16倍数、AES192:24倍数、AES256:32倍数。
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* 输出参数： pPlainText -- 解密出来的明文
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* 返回值： 返回解密后的数据长度。
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*****************************************************************************/
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unsigned int AESDecrypt(AESInfo_t *aesInfoP, unsigned char *pPlainText, const unsigned char *pCipherText, unsigned int dataLen);
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#endif
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#ifdef __cplusplus
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}
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#endif
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#endif
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