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74 lines
2.1 KiB
C
74 lines
2.1 KiB
C
/* Copyright 2001,2002 Roger Dingledine, Matej Pfajfar. */
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/* See LICENSE for licensing information */
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/* $Id$ */
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#ifndef __CRYPTO_H
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#define __CRYPTO_H
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#include <openssl/err.h>
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#include <openssl/rsa.h>
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#include <openssl/pem.h>
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#include <openssl/evp.h>
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#include <openssl/rand.h>
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/* available encryption primitives */
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#define CRYPTO_CIPHER_IDENTITY 0
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#define CRYPTO_CIPHER_DES 1
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#define CRYPTO_CIPHER_RC4 2
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#define CRYPTO_PK_RSA 0
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typedef struct
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{
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int type;
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unsigned char *key;
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/* auxiliary data structure(s) used by the underlying crypto library */
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unsigned char *aux;
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} crypto_pk_env_t;
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typedef struct
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{
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int type;
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unsigned char *key;
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unsigned char *iv;
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/* auxiliary data structure(s) used by the underlying crypto library */
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unsigned char *aux;
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} crypto_cipher_env_t;
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/* global state */
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int crypto_global_init();
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int crypto_global_cleanup();
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/* environment setup */
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crypto_pk_env_t *crypto_new_pk_env(int type);
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void crypto_free_pk_env(crypto_pk_env_t *env);
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crypto_cipher_env_t *crypto_new_cipher_env(int type);
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void crypto_free_cipher_env(crypto_cipher_env_t *env);
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/* public key crypto */
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int crypto_pk_generate_key(crypto_pk_env_t *env);
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int crypto_pk_read_private_key(crypto_pk_env_t *env, FILE *src);
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int crypto_pk_read_public_key(crypto_pk_env_t *env, FILE *src);
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int crypto_pk_write_private_key(crypto_pk_env_t *env, FILE *dest);
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int crypto_pk_write_public_key(crypto_pk_env_t *env, FILE *dest);
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int crypto_pk_set_key(crypto_pk_env_t *env, unsigned char *key);
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/* symmetric crypto */
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int crypto_cipher_set_iv(crypto_cipher_env_t *env, unsigned char *iv);
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int crypto_cipher_set_key(crypto_cipher_env_t *env, unsigned char *key);
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int crypto_cipher_init_cipher();
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int crypto_cipher_encrypt(crypto_cipher_env_t *env, unsigned char *from, unsigned int fromlen, unsigned char *to);
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int crypto_cipher_decrypt(crypto_cipher_env_t *env, unsigned char *from, unsigned int fromlen, unsigned char *to);
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/* SHA-1 */
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int crypto_SHA_digest(unsigned char *m, unsigned char *digest);
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/* random numbers */
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int crypto_rand(unsigned int n, unsigned char *to);
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int crypto_pseudo_rand(unsigned int n, unsigned char *to);
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#endif
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