crypto/dsa/dsa.h

   1 /* crypto/dsa/dsa.h */
   2 /* Copyright (C) 1995-1997 Eric Young (eay@cryptsoft.com)
   3  * All rights reserved.
   4  *
   5  * This package is an SSL implementation written
   6  * by Eric Young (eay@cryptsoft.com).
   7  * The implementation was written so as to conform with Netscapes SSL.
   8  *
   9  * This library is free for commercial and non-commercial use as long as
  10  * the following conditions are aheared to.  The following conditions
  11  * apply to all code found in this distribution, be it the RC4, RSA,
  12  * lhash, DES, etc., code; not just the SSL code.  The SSL documentation
  13  * included with this distribution is covered by the same copyright terms
  14  * except that the holder is Tim Hudson (tjh@cryptsoft.com).
  15  *
  16  * Copyright remains Eric Young's, and as such any Copyright notices in
  17  * the code are not to be removed.
  18  * If this package is used in a product, Eric Young should be given attribution
  19  * as the author of the parts of the library used.
  20  * This can be in the form of a textual message at program startup or
  21  * in documentation (online or textual) provided with the package.
  22  *
  23  * Redistribution and use in source and binary forms, with or without
  24  * modification, are permitted provided that the following conditions
  25  * are met:
  26  * 1. Redistributions of source code must retain the copyright
  27  *    notice, this list of conditions and the following disclaimer.
  28  * 2. Redistributions in binary form must reproduce the above copyright
  29  *    notice, this list of conditions and the following disclaimer in the
  30  *    documentation and/or other materials provided with the distribution.
  31  * 3. All advertising materials mentioning features or use of this software
  32  *    must display the following acknowledgement:
  33  *    "This product includes cryptographic software written by
  34  *     Eric Young (eay@cryptsoft.com)"
  35  *    The word 'cryptographic' can be left out if the rouines from the library
  36  *    being used are not cryptographic related :-).
  37  * 4. If you include any Windows specific code (or a derivative thereof) from
  38  *    the apps directory (application code) you must include an acknowledgement:
  39  *    "This product includes software written by Tim Hudson (tjh@cryptsoft.com)"
  40  *
  41  * THIS SOFTWARE IS PROVIDED BY ERIC YOUNG ``AS IS'' AND
  42  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
  43  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
  44  * ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
  45  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
  46  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
  47  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
  48  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
  49  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
  50  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
  51  * SUCH DAMAGE.
  52  *
  53  * The licence and distribution terms for any publically available version or
  54  * derivative of this code cannot be changed.  i.e. this code cannot simply be
  55  * copied and put under another distribution licence
  56  * [including the GNU Public Licence.]
  57  */
  58
  59 /*
  60  * The DSS routines are based on patches supplied by
  61  * Steven Schoch <schoch@sheba.arc.nasa.gov>.  He basically did the
  62  * work and I have just tweaked them a little to fit into my
  63  * stylistic vision for SSLeay :-) */
  64
  65 #ifndef HEADER_DSA_H
  66 #define HEADER_DSA_H
  67
  68 #ifdef  __cplusplus
  69 extern "C" {
  70 #endif
  71
  72 #include "bn.h"
  73
  74 typedef struct dsa_st
  75         {
  76         /* This first variable is used to pick up errors where
  77          * a DSA is passed instead of of a EVP_PKEY */
  78         int pad;
  79         int version;
  80         int write_params;
  81         BIGNUM *p;
  82         BIGNUM *q;      /* == 20 */
  83         BIGNUM *g;
  84
  85         BIGNUM *pub_key;  /* y public key */
  86         BIGNUM *priv_key; /* x private key */
  87
  88         BIGNUM *kinv;   /* Signing pre-calc */
  89         BIGNUM *r;      /* Signing pre-calc */
  90
  91         int references;
  92         } DSA;
  93
  94 #define DSAparams_dup(x) (DSA *)ASN1_dup((int (*)())i2d_DSAparams, \
  95                 (char *(*)())d2i_DSAparams,(char *)(x))
  96 #define d2i_DSAparams_fp(fp,x) (DSA *)ASN1_d2i_fp((char *(*)())DSA_new, \
  97                 (char *(*)())d2i_DSAparams,(fp),(unsigned char **)(x))
  98 #define i2d_DSAparams_fp(fp,x) ASN1_i2d_fp(i2d_DSAparams,(fp), \
  99                 (unsigned char *)(x))
 100 #define d2i_DSAparams_bio(bp,x) (DSA *)ASN1_d2i_bio((char *(*)())DSA_new, \
 101                 (char *(*)())d2i_DSAparams,(bp),(unsigned char **)(x))
 102 #define i2d_DSAparams_bio(bp,x) ASN1_i2d_bio(i2d_DSAparams,(bp), \
 103                 (unsigned char *)(x))
 104
 105 #ifndef NOPROTO
 106
 107 DSA *   DSA_new(void);
 108 int     DSA_size(DSA *);
 109         /* DSA *        DSA_generate_key(int bits, void (*callback)()); */
 110         /* next 4 return -1 on error */
 111 int     DSA_sign_setup( DSA *dsa,BN_CTX *ctx_in,BIGNUM **kinvp,BIGNUM **rp);
 112 int     DSA_sign(int type,unsigned char *dgst,int dlen,
 113                 unsigned char *sig, unsigned int *siglen, DSA *dsa);
 114 int     DSA_verify(int type,unsigned char *dgst,int dgst_len,
 115                 unsigned char *sigbuf, int siglen, DSA *dsa);
 116 void    DSA_free (DSA *r);
 117
 118 void    ERR_load_DSA_strings(void );
 119
 120 DSA *   d2i_DSAPublicKey(DSA **a, unsigned char **pp, long length);
 121 DSA *   d2i_DSAPrivateKey(DSA **a, unsigned char **pp, long length);
 122 DSA *   d2i_DSAparams(DSA **a, unsigned char **pp, long length);
 123 DSA *   DSA_generate_parameters(int bits, unsigned char *seed,int seed_len,
 124                 int *counter_ret, unsigned long *h_ret,void (*callback)());
 125 int     DSA_generate_key(DSA *a);
 126 int     i2d_DSAPublicKey(DSA *a, unsigned char **pp);
 127 int     i2d_DSAPrivateKey(DSA *a, unsigned char **pp);
 128 int     i2d_DSAparams(DSA *a,unsigned char **pp);
 129
 130 #ifdef HEADER_BIO_H
 131 int     DSAparams_print(BIO *bp, DSA *x);
 132 int     DSA_print(BIO *bp, DSA *x, int off);
 133 #endif
 134 #ifndef WIN16
 135 int     DSAparams_print_fp(FILE *fp, DSA *x);
 136 int     DSA_print_fp(FILE *bp, DSA *x, int off);
 137 #endif
 138
 139 int DSA_is_prime(BIGNUM *q,void (*callback)());
 140
 141 #else
 142
 143 DSA *   DSA_new();
 144 int     DSA_size();
 145 int     DSA_sign_setup();
 146 int     DSA_sign();
 147 int     DSA_verify();
 148 void    DSA_free ();
 149
 150 void    ERR_load_DSA_strings();
 151
 152 DSA *   d2i_DSAPublicKey();
 153 DSA *   d2i_DSAPrivateKey();
 154 DSA *   d2i_DSAparams();
 155 DSA *   DSA_generate_parameters();
 156 int     DSA_generate_key();
 157 int     i2d_DSAPublicKey();
 158 int     i2d_DSAPrivateKey();
 159 int     i2d_DSAparams();
 160
 161 int     DSA_is_prime();
 162
 163 int     DSAparams_print();
 164 int     DSA_print();
 165
 166 #ifndef WIN16
 167 int     DSAparams_print_fp();
 168 int     DSA_print_fp();
 169 #endif
 170
 171 #endif
 172
 173 /* BEGIN ERROR CODES */
 174 /* Error codes for the DSA functions. */
 175
 176 /* Function codes. */
 177 #define DSA_F_DSAPARAMS_PRINT                            100
 178 #define DSA_F_DSAPARAMS_PRINT_FP                         101
 179 #define DSA_F_DSA_IS_PRIME                               102
 180 #define DSA_F_DSA_NEW                                    103
 181 #define DSA_F_DSA_PRINT                                  104
 182 #define DSA_F_DSA_PRINT_FP                               105
 183 #define DSA_F_DSA_SIGN                                   106
 184 #define DSA_F_DSA_SIGN_SETUP                             107
 185 #define DSA_F_DSA_VERIFY                                 108
 186
 187 /* Reason codes. */
 188 #define DSA_R_DATA_TOO_LARGE_FOR_KEY_SIZE                100
 189
 190 #ifdef  __cplusplus
 191 }
 192 #endif
 193 #endif
 194