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/* crypto/dsa/dsa.h */
/* Copyright (C) 1995-1998 Eric Young (eay@cryptsoft.com)
* All rights reserved.
*
* This package is an SSL implementation written
* by Eric Young (eay@cryptsoft.com).
* The implementation was written so as to conform with Netscapes SSL.
*
* This library is free for commercial and non-commercial use as long as
* the following conditions are aheared to. The following conditions
* apply to all code found in this distribution, be it the RC4, RSA,
* lhash, DES, etc., code; not just the SSL code. The SSL documentation
* included with this distribution is covered by the same copyright terms
* except that the holder is Tim Hudson (tjh@cryptsoft.com).
*
* Copyright remains Eric Young's, and as such any Copyright notices in
* the code are not to be removed.
* If this package is used in a product, Eric Young should be given attribution
* as the author of the parts of the library used.
* This can be in the form of a textual message at program startup or
* in documentation (online or textual) provided with the package.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
* 3. All advertising materials mentioning features or use of this software
* must display the following acknowledgement:
* "This product includes cryptographic software written by
* Eric Young (eay@cryptsoft.com)"
* The word 'cryptographic' can be left out if the rouines from the library
* being used are not cryptographic related :-).
* 4. If you include any Windows specific code (or a derivative thereof) from
* the apps directory (application code) you must include an acknowledgement:
* "This product includes software written by Tim Hudson (tjh@cryptsoft.com)"
*
* THIS SOFTWARE IS PROVIDED BY ERIC YOUNG ``AS IS'' AND
* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
* ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
* SUCH DAMAGE.
*
* The licence and distribution terms for any publically available version or
* derivative of this code cannot be changed. i.e. this code cannot simply be
* copied and put under another distribution licence
* [including the GNU Public Licence.]
*/
/*
* The DSS routines are based on patches supplied by
* Steven Schoch <schoch@sheba.arc.nasa.gov>. He basically did the
* work and I have just tweaked them a little to fit into my
* stylistic vision for SSLeay :-) */
#ifndef HEADER_DSA_H
#define HEADER_DSA_H
#ifdef __cplusplus
extern "C" {
#endif
#include "bn.h"
typedef struct dsa_st
{
/* This first variable is used to pick up errors where
* a DSA is passed instead of of a EVP_PKEY */
int pad;
int version;
int write_params;
BIGNUM *p;
BIGNUM *q; /* == 20 */
BIGNUM *g;
BIGNUM *pub_key; /* y public key */
BIGNUM *priv_key; /* x private key */
BIGNUM *kinv; /* Signing pre-calc */
BIGNUM *r; /* Signing pre-calc */
int references;
} DSA;
#define DSAparams_dup(x) (DSA *)ASN1_dup((int (*)())i2d_DSAparams, \
(char *(*)())d2i_DSAparams,(char *)(x))
#define d2i_DSAparams_fp(fp,x) (DSA *)ASN1_d2i_fp((char *(*)())DSA_new, \
(char *(*)())d2i_DSAparams,(fp),(unsigned char **)(x))
#define i2d_DSAparams_fp(fp,x) ASN1_i2d_fp(i2d_DSAparams,(fp), \
(unsigned char *)(x))
#define d2i_DSAparams_bio(bp,x) (DSA *)ASN1_d2i_bio((char *(*)())DSA_new, \
(char *(*)())d2i_DSAparams,(bp),(unsigned char **)(x))
#define i2d_DSAparams_bio(bp,x) ASN1_i2d_bio(i2d_DSAparams,(bp), \
(unsigned char *)(x))
#ifndef NOPROTO
DSA * DSA_new(void);
int DSA_size(DSA *);
/* next 4 return -1 on error */
int DSA_sign_setup( DSA *dsa,BN_CTX *ctx_in,BIGNUM **kinvp,BIGNUM **rp);
int DSA_sign(int type,unsigned char *dgst,int dlen,
unsigned char *sig, unsigned int *siglen, DSA *dsa);
int DSA_verify(int type,unsigned char *dgst,int dgst_len,
unsigned char *sigbuf, int siglen, DSA *dsa);
void DSA_free (DSA *r);
void ERR_load_DSA_strings(void );
DSA * d2i_DSAPublicKey(DSA **a, unsigned char **pp, long length);
DSA * d2i_DSAPrivateKey(DSA **a, unsigned char **pp, long length);
DSA * d2i_DSAparams(DSA **a, unsigned char **pp, long length);
DSA * DSA_generate_parameters(int bits, unsigned char *seed,int seed_len,
int *counter_ret, unsigned long *h_ret,void
(*callback)(),char *cb_arg);
int DSA_generate_key(DSA *a);
int i2d_DSAPublicKey(DSA *a, unsigned char **pp);
int i2d_DSAPrivateKey(DSA *a, unsigned char **pp);
int i2d_DSAparams(DSA *a,unsigned char **pp);
#ifdef HEADER_BIO_H
int DSAparams_print(BIO *bp, DSA *x);
int DSA_print(BIO *bp, DSA *x, int off);
#endif
#ifndef NO_FP_API
int DSAparams_print_fp(FILE *fp, DSA *x);
int DSA_print_fp(FILE *bp, DSA *x, int off);
#endif
int DSA_is_prime(BIGNUM *q,void (*callback)(),char *cb_arg);
#else
DSA * DSA_new();
int DSA_size();
int DSA_sign_setup();
int DSA_sign();
int DSA_verify();
void DSA_free ();
void ERR_load_DSA_strings();
DSA * d2i_DSAPublicKey();
DSA * d2i_DSAPrivateKey();
DSA * d2i_DSAparams();
DSA * DSA_generate_parameters();
int DSA_generate_key();
int i2d_DSAPublicKey();
int i2d_DSAPrivateKey();
int i2d_DSAparams();
int DSA_is_prime();
int DSAparams_print();
int DSA_print();
#ifndef NO_FP_API
int DSAparams_print_fp();
int DSA_print_fp();
#endif
#endif
/* BEGIN ERROR CODES */
/* Error codes for the DSA functions. */
/* Function codes. */
#define DSA_F_DSAPARAMS_PRINT 100
#define DSA_F_DSAPARAMS_PRINT_FP 101
#define DSA_F_DSA_IS_PRIME 102
#define DSA_F_DSA_NEW 103
#define DSA_F_DSA_PRINT 104
#define DSA_F_DSA_PRINT_FP 105
#define DSA_F_DSA_SIGN 106
#define DSA_F_DSA_SIGN_SETUP 107
#define DSA_F_DSA_VERIFY 108
/* Reason codes. */
#define DSA_R_DATA_TOO_LARGE_FOR_KEY_SIZE 100
#ifdef __cplusplus
}
#endif
#endif
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