223 lines
7.7 KiB
C
223 lines
7.7 KiB
C
/*
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* Copyright (c) 2007, Cameron Rich
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*
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* All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions are met:
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*
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* * Redistributions of source code must retain the above copyright notice,
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* this list of conditions and the following disclaimer.
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* * Redistributions in binary form must reproduce the above copyright notice,
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* this list of conditions and the following disclaimer in the documentation
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* and/or other materials provided with the distribution.
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* * Neither the name of the axTLS project nor the names of its contributors
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* may be used to endorse or promote products derived from this software
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* without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
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* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
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* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
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* A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR
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* CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
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* EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
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* PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
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* PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF
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* LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
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* NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
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* SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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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 "config.h"
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#include "os_port.h"
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#include "bigint_impl.h"
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#include "bigint.h"
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/* enable features based on a 'super-set' capbaility. */
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#if defined(CONFIG_SSL_FULL_MODE)
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#define CONFIG_SSL_ENABLE_CLIENT
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#define CONFIG_SSL_CERT_VERIFICATION
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#elif defined(CONFIG_SSL_ENABLE_CLIENT)
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#define CONFIG_SSL_CERT_VERIFICATION
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#endif
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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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* MD2 declarations
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**************************************************************************/
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#define MD2_SIZE 16
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typedef struct
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{
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unsigned char cksum[16]; /* checksum of the data block */
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unsigned char state[48]; /* intermediate digest state */
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unsigned char buffer[16]; /* data block being processed */
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int left; /* amount of data in buffer */
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} MD2_CTX;
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EXP_FUNC void STDCALL MD2_Init(MD2_CTX *ctx);
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EXP_FUNC void STDCALL MD2_Update(MD2_CTX *ctx, const uint8_t *input, int ilen);
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EXP_FUNC void STDCALL MD2_Final(uint8_t *digest, MD2_CTX *ctx);
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/**************************************************************************
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* MD5 declarations
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**************************************************************************/
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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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/**************************************************************************
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* RSA declarations
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**************************************************************************/
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typedef struct
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{
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bigint *m; /* modulus */
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bigint *e; /* public exponent */
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bigint *d; /* private exponent */
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#ifdef CONFIG_BIGINT_CRT
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bigint *p; /* p as in m = pq */
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bigint *q; /* q as in m = pq */
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bigint *dP; /* d mod (p-1) */
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bigint *dQ; /* d mod (q-1) */
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bigint *qInv; /* q^-1 mod p */
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#endif
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int num_octets;
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BI_CTX *bi_ctx;
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} RSA_CTX;
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void RSA_priv_key_new(RSA_CTX **rsa_ctx,
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const uint8_t *modulus, int mod_len,
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const uint8_t *pub_exp, int pub_len,
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const uint8_t *priv_exp, int priv_len
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#ifdef CONFIG_BIGINT_CRT
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, const uint8_t *p, int p_len,
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const uint8_t *q, int q_len,
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const uint8_t *dP, int dP_len,
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const uint8_t *dQ, int dQ_len,
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const uint8_t *qInv, int qInv_len
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#endif
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);
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void RSA_pub_key_new(RSA_CTX **rsa_ctx,
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const uint8_t *modulus, int mod_len,
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const uint8_t *pub_exp, int pub_len);
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void RSA_free(RSA_CTX *ctx);
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int RSA_decrypt(const RSA_CTX *ctx, const uint8_t *in_data, uint8_t *out_data,
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int is_decryption);
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bigint *RSA_private(const RSA_CTX *c, bigint *bi_msg);
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#if defined(CONFIG_SSL_CERT_VERIFICATION) || defined(CONFIG_SSL_GENERATE_X509_CERT)
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bigint *RSA_sign_verify(BI_CTX *ctx, const uint8_t *sig, int sig_len,
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bigint *modulus, bigint *pub_exp);
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bigint *RSA_public(const RSA_CTX * c, bigint *bi_msg);
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int RSA_encrypt(const RSA_CTX *ctx, const uint8_t *in_data, uint16_t in_len,
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uint8_t *out_data, int is_signing);
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void RSA_print(const RSA_CTX *ctx);
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#endif
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/**************************************************************************
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* RNG declarations
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**************************************************************************/
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EXP_FUNC void STDCALL RNG_initialize(const uint8_t *seed_buf, int size);
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EXP_FUNC void STDCALL RNG_terminate(void);
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EXP_FUNC void STDCALL get_random(int num_rand_bytes, uint8_t *rand_data);
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void get_random_NZ(int num_rand_bytes, uint8_t *rand_data);
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#ifdef __cplusplus
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}
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#endif
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#endif
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