1/* 2 * Copyright (c) 2000-2002,2011,2014 Apple Inc. All Rights Reserved. 3 * 4 * The contents of this file constitute Original Code as defined in and are 5 * subject to the Apple Public Source License Version 1.2 (the 'License'). 6 * You may not use this file except in compliance with the License. Please obtain 7 * a copy of the License at http://www.apple.com/publicsource and read it before 8 * using this file. 9 * 10 * This Original Code and all software distributed under the License are 11 * distributed on an 'AS IS' basis, WITHOUT WARRANTY OF ANY KIND, EITHER EXPRESS 12 * OR IMPLIED, AND APPLE HEREBY DISCLAIMS ALL SUCH WARRANTIES, INCLUDING WITHOUT 13 * LIMITATION, ANY WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR 14 * PURPOSE, QUIET ENJOYMENT OR NON-INFRINGEMENT. Please see the License for the 15 * specific language governing rights and limitations under the License. 16 */ 17 18 19/* crypto/dsa/dsa.h */ 20/* Copyright (C) 1995-1998 Eric Young (eay@cryptsoft.com) 21 * All rights reserved. 22 * 23 * This package is an SSL implementation written 24 * by Eric Young (eay@cryptsoft.com). 25 * The implementation was written so as to conform with Netscapes SSL. 26 * 27 * This library is free for commercial and non-commercial use as long as 28 * the following conditions are aheared to. The following conditions 29 * apply to all code found in this distribution, be it the RC4, RSA, 30 * lhash, DES, etc., code; not just the SSL code. The SSL documentation 31 * included with this distribution is covered by the same copyright terms 32 * except that the holder is Tim Hudson (tjh@cryptsoft.com). 33 * 34 * Copyright remains Eric Young's, and as such any Copyright notices in 35 * the code are not to be removed. 36 * If this package is used in a product, Eric Young should be given attribution 37 * as the author of the parts of the library used. 38 * This can be in the form of a textual message at program startup or 39 * in documentation (online or textual) provided with the package. 40 * 41 * Redistribution and use in source and binary forms, with or without 42 * modification, are permitted provided that the following conditions 43 * are met: 44 * 1. Redistributions of source code must retain the copyright 45 * notice, this list of conditions and the following disclaimer. 46 * 2. Redistributions in binary form must reproduce the above copyright 47 * notice, this list of conditions and the following disclaimer in the 48 * documentation and/or other materials provided with the distribution. 49 * 3. All advertising materials mentioning features or use of this software 50 * must display the following acknowledgement: 51 * "This product includes cryptographic software written by 52 * Eric Young (eay@cryptsoft.com)" 53 * The word 'cryptographic' can be left out if the rouines from the library 54 * being used are not cryptographic related :-). 55 * 4. If you include any Windows specific code (or a derivative thereof) from 56 * the apps directory (application code) you must include an acknowledgement: 57 * "This product includes software written by Tim Hudson (tjh@cryptsoft.com)" 58 * 59 * THIS SOFTWARE IS PROVIDED BY ERIC YOUNG ``AS IS'' AND 60 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 61 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 62 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE 63 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 64 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 65 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 66 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 67 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 68 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 69 * SUCH DAMAGE. 70 * 71 * The licence and distribution terms for any publically available version or 72 * derivative of this code cannot be changed. i.e. this code cannot simply be 73 * copied and put under another distribution licence 74 * [including the GNU Public Licence.] 75 */ 76 77/* 78 * The DSS routines are based on patches supplied by 79 * Steven Schoch <schoch@sheba.arc.nasa.gov>. He basically did the 80 * work and I have just tweaked them a little to fit into my 81 * stylistic vision for SSLeay :-) */ 82 83#ifndef HEADER_DSA_H 84#define HEADER_DSA_H 85 86#ifdef __cplusplus 87extern "C" { 88#endif 89 90#ifdef NO_DSA 91#error DSA is disabled. 92#endif 93 94#include <openssl/bn.h> 95#include <openssl/crypto.h> 96#ifndef NO_DH 97# include <openssl/dh.h> 98#endif 99 100#define DSA_FLAG_CACHE_MONT_P 0x01 101 102typedef struct dsa_st DSA; 103 104typedef struct DSA_SIG_st 105 { 106 BIGNUM *r; 107 BIGNUM *s; 108 } DSA_SIG; 109 110typedef struct dsa_method { 111 const char *name; 112 DSA_SIG * (*dsa_do_sign)(const unsigned char *dgst, int dlen, DSA *dsa); 113 int (*dsa_sign_setup)(DSA *dsa, BN_CTX *ctx_in, BIGNUM **kinvp, 114 BIGNUM **rp); 115 int (*dsa_do_verify)(const unsigned char *dgst, int dgst_len, 116 DSA_SIG *sig, DSA *dsa); 117 int (*dsa_mod_exp)(DSA *dsa, BIGNUM *rr, BIGNUM *a1, BIGNUM *p1, 118 BIGNUM *a2, BIGNUM *p2, BIGNUM *m, BN_CTX *ctx, 119 BN_MONT_CTX *in_mont); 120 int (*bn_mod_exp)(DSA *dsa, BIGNUM *r, BIGNUM *a, const BIGNUM *p, 121 const BIGNUM *m, BN_CTX *ctx, 122 BN_MONT_CTX *m_ctx); /* Can be null */ 123 int (*init)(DSA *dsa); 124 int (*finish)(DSA *dsa); 125 int flags; 126 char *app_data; 127} DSA_METHOD; 128 129struct dsa_st 130 { 131 /* This first variable is used to pick up errors where 132 * a DSA is passed instead of of a EVP_PKEY */ 133 int pad; 134 int version; 135 int write_params; 136 BIGNUM *p; 137 BIGNUM *q; /* == 20 */ 138 BIGNUM *g; 139 140 BIGNUM *pub_key; /* y public key */ 141 BIGNUM *priv_key; /* x private key */ 142 143 BIGNUM *kinv; /* Signing pre-calc */ 144 BIGNUM *r; /* Signing pre-calc */ 145 146 int flags; 147 /* Normally used to cache montgomery values */ 148 char *method_mont_p; 149 int references; 150 CRYPTO_EX_DATA ex_data; 151 const DSA_METHOD *meth; 152 }; 153 154#define DSAparams_dup(x) (DSA *)ASN1_dup((int (*)())i2d_DSAparams, \ 155 (char *(*)())d2i_DSAparams,(char *)(x)) 156#define d2i_DSAparams_fp(fp,x) (DSA *)ASN1_d2i_fp((char *(*)())DSA_new, \ 157 (char *(*)())d2i_DSAparams,(fp),(unsigned char **)(x)) 158#define i2d_DSAparams_fp(fp,x) ASN1_i2d_fp(i2d_DSAparams,(fp), \ 159 (unsigned char *)(x)) 160#define d2i_DSAparams_bio(bp,x) (DSA *)ASN1_d2i_bio((char *(*)())DSA_new, \ 161 (char *(*)())d2i_DSAparams,(bp),(unsigned char **)(x)) 162#define i2d_DSAparams_bio(bp,x) ASN1_i2d_bio(i2d_DSAparams,(bp), \ 163 (unsigned char *)(x)) 164 165 166DSA_SIG * DSA_SIG_new(void); 167void DSA_SIG_free(DSA_SIG *a); 168int i2d_DSA_SIG(DSA_SIG *a, unsigned char **pp); 169DSA_SIG * d2i_DSA_SIG(DSA_SIG **v, unsigned char **pp, long length); 170 171DSA_SIG * DSA_do_sign(const unsigned char *dgst,int dlen,DSA *dsa); 172int DSA_do_verify(const unsigned char *dgst,int dgst_len, 173 DSA_SIG *sig,DSA *dsa); 174 175const DSA_METHOD *DSA_OpenSSL(void); 176 177void DSA_set_default_method(const DSA_METHOD *); 178const DSA_METHOD *DSA_get_default_method(void); 179const DSA_METHOD *DSA_set_method(DSA *dsa, const DSA_METHOD *); 180 181DSA * DSA_new(void); 182DSA * DSA_new_method(const DSA_METHOD *meth); 183int DSA_size(DSA *); 184 /* next 4 return -1 on error */ 185int DSA_sign_setup( DSA *dsa,BN_CTX *ctx_in,BIGNUM **kinvp,BIGNUM **rp); 186int DSA_sign(int type,const unsigned char *dgst,int dlen, 187 unsigned char *sig, unsigned int *siglen, DSA *dsa); 188int DSA_verify(int type,const unsigned char *dgst,int dgst_len, 189 unsigned char *sigbuf, int siglen, DSA *dsa); 190void DSA_free (DSA *r); 191int DSA_get_ex_new_index(long argl, void *argp, CRYPTO_EX_new *new_func, 192 CRYPTO_EX_dup *dup_func, CRYPTO_EX_free *free_func); 193int DSA_set_ex_data(DSA *d, int idx, void *arg); 194void *DSA_get_ex_data(DSA *d, int idx); 195 196void ERR_load_DSA_strings(void ); 197 198DSA * d2i_DSAPublicKey(DSA **a, unsigned char **pp, long length); 199DSA * d2i_DSAPrivateKey(DSA **a, unsigned char **pp, long length); 200DSA * d2i_DSAparams(DSA **a, unsigned char **pp, long length); 201DSA * DSA_generate_parameters(int bits, unsigned char *seed,int seed_len, 202 int *counter_ret, unsigned long *h_ret,void 203 (*callback)(int, int, void *),void *cb_arg); 204int DSA_generate_key(DSA *a); 205int i2d_DSAPublicKey(DSA *a, unsigned char **pp); 206int i2d_DSAPrivateKey(DSA *a, unsigned char **pp); 207int i2d_DSAparams(DSA *a,unsigned char **pp); 208 209#ifdef HEADER_BIO_H 210int DSAparams_print(BIO *bp, DSA *x); 211int DSA_print(BIO *bp, DSA *x, int off); 212#endif 213#ifndef NO_FP_API 214int DSAparams_print_fp(FILE *fp, DSA *x); 215int DSA_print_fp(FILE *bp, DSA *x, int off); 216#endif 217 218#define DSS_prime_checks 50 219/* Primality test according to FIPS PUB 186[-1], Appendix 2.1: 220 * 50 rounds of Rabin-Miller */ 221#define DSA_is_prime(n, callback, cb_arg) \ 222 BN_is_prime(n, DSS_prime_checks, callback, NULL, cb_arg) 223 224#ifndef NO_DH 225/* Convert DSA structure (key or just parameters) into DH structure 226 * (be careful to avoid small subgroup attacks when using this!) */ 227DH *DSA_dup_DH(DSA *r); 228#endif 229 230/* BEGIN ERROR CODES */ 231/* The following lines are auto generated by the script mkerr.pl. Any changes 232 * made after this point may be overwritten when the script is next run. 233 */ 234 235/* Error codes for the DSA functions. */ 236 237/* Function codes. */ 238#define DSA_F_D2I_DSA_SIG 110 239#define DSA_F_DSAPARAMS_PRINT 100 240#define DSA_F_DSAPARAMS_PRINT_FP 101 241#define DSA_F_DSA_DO_SIGN 112 242#define DSA_F_DSA_DO_VERIFY 113 243#define DSA_F_DSA_NEW 103 244#define DSA_F_DSA_PRINT 104 245#define DSA_F_DSA_PRINT_FP 105 246#define DSA_F_DSA_SIGN 106 247#define DSA_F_DSA_SIGN_SETUP 107 248#define DSA_F_DSA_SIG_NEW 109 249#define DSA_F_DSA_VERIFY 108 250#define DSA_F_I2D_DSA_SIG 111 251 252/* Reason codes. */ 253#define DSA_R_DATA_TOO_LARGE_FOR_KEY_SIZE 100 254 255#ifdef __cplusplus 256} 257#endif 258#endif 259 260