mirror of https://github.com/BOINC/boinc.git
134 lines
4.3 KiB
C
134 lines
4.3 KiB
C
// Berkeley Open Infrastructure for Network Computing
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// http://boinc.berkeley.edu
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// Copyright (C) 2005 University of California
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//
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// This is free software; you can redistribute it and/or
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// modify it under the terms of the GNU Lesser General Public
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// License as published by the Free Software Foundation;
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// either version 2.1 of the License, or (at your option) any later version.
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//
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// This software 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.
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// See the GNU Lesser General Public License for more details.
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//
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// To view the GNU Lesser General Public License visit
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// http://www.gnu.org/copyleft/lesser.html
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// or write to the Free Software Foundation, Inc.,
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// 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
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#ifndef H_CRYPT
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#define H_CRYPT
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// We're set up to use either RSAEuro or the OpenSSL crypto library.
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// We use our own data structures (R_RSA_PUBLIC_KEY and R_RSA_PRIVATE_KEY)
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// to store keys in either case.
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// Only define these here if they haven't been defined elsewhere
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#if !(defined(USE_OPENSSL) || defined(USE_RSAEURO))
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#define USE_OPENSSL 1
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//#define USE_RSAEURO 1
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#endif
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#include <stdio.h>
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#include <string.h>
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#ifdef USE_RSAEURO
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#include "rsaeuro.h"
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extern "C" {
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#include "rsa.h"
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}
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#endif
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#ifdef USE_OPENSSL
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#include <openssl/rsa.h>
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#define MAX_RSA_MODULUS_BITS 1024
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#define MAX_RSA_MODULUS_LEN ((MAX_RSA_MODULUS_BITS + 7) / 8)
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#define MAX_RSA_PRIME_BITS ((MAX_RSA_MODULUS_BITS + 1) / 2)
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#define MAX_RSA_PRIME_LEN ((MAX_RSA_PRIME_BITS + 7) / 8)
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typedef struct {
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unsigned short int bits; /* length in bits of modulus */
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unsigned char modulus[MAX_RSA_MODULUS_LEN]; /* modulus */
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unsigned char exponent[MAX_RSA_MODULUS_LEN]; /* public exponent */
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} R_RSA_PUBLIC_KEY;
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typedef struct {
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unsigned short int bits; /* length in bits of modulus */
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unsigned char modulus[MAX_RSA_MODULUS_LEN]; /* modulus */
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unsigned char publicExponent[MAX_RSA_MODULUS_LEN]; /* public exponent */
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unsigned char exponent[MAX_RSA_MODULUS_LEN]; /* private exponent */
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unsigned char prime[2][MAX_RSA_PRIME_LEN]; /* prime factors */
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unsigned char primeExponent[2][MAX_RSA_PRIME_LEN]; /* exponents for CRT */
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unsigned char coefficient[MAX_RSA_PRIME_LEN]; /* CRT coefficient */
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} R_RSA_PRIVATE_KEY;
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// functions to convert between OpenSSL's keys (using BIGNUMs)
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// and our binary format
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extern void openssl_to_keys(
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RSA* rp, int nbits, R_RSA_PRIVATE_KEY& priv, R_RSA_PUBLIC_KEY& pub
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);
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extern void private_to_openssl(R_RSA_PRIVATE_KEY& priv, RSA* rp);
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extern void public_to_openssl(R_RSA_PUBLIC_KEY& pub, RSA* rp);
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#endif
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struct KEY {
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unsigned short int bits;
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unsigned char data[1];
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};
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struct DATA_BLOCK {
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unsigned char* data;
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unsigned int len;
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};
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#define MIN_OUT_BUFFER_SIZE MAX_RSA_MODULUS_LEN+1
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// the size of a binary signature (encrypted MD5)
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//
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#define SIGNATURE_SIZE_BINARY MIN_OUT_BUFFER_SIZE
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// size of text-encoded signature
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#define SIGNATURE_SIZE_TEXT (SIGNATURE_SIZE_BINARY*2+20)
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extern int print_hex_data(FILE* f, DATA_BLOCK&);
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extern int sprint_hex_data(char* p, DATA_BLOCK&);
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extern int scan_hex_data(FILE* f, DATA_BLOCK&);
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extern int print_key_hex(FILE*, KEY* key, int len);
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extern int scan_key_hex(FILE*, KEY* key, int len);
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extern int sscan_key_hex(const char*, KEY* key, int len);
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extern int encrypt_private(
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R_RSA_PRIVATE_KEY& key, DATA_BLOCK& in, DATA_BLOCK& out
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);
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extern int decrypt_public(
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R_RSA_PUBLIC_KEY& key, DATA_BLOCK& in, DATA_BLOCK& out
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);
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extern int sign_file(
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const char* path, R_RSA_PRIVATE_KEY&, DATA_BLOCK& signature
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);
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extern int sign_block(
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DATA_BLOCK& data, R_RSA_PRIVATE_KEY&, DATA_BLOCK& signature
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);
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extern int verify_file(
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const char* path, R_RSA_PUBLIC_KEY&, DATA_BLOCK& signature, bool&
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);
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extern int verify_file2(
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const char* path, const char* signature, const char* key, bool&
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);
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extern int verify_string(
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const char* text, const char* signature, R_RSA_PUBLIC_KEY&, bool&
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);
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extern int verify_string2(
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const char* text, const char* signature, const char* key, bool&
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);
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extern int read_key_file(const char* keyfile, R_RSA_PRIVATE_KEY& key);
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extern int generate_signature(
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char* text_to_sign, char* signature_hex, R_RSA_PRIVATE_KEY& key
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);
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#endif
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