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cbfa030de7485f1f82b61965e107f04e0964a580
openssl/crypto/dsa/dsa.h
Richard Levitte ef33b97050 Using checks of the existence of HEADER_{foo}_H in other header files 
was a really bad idea.  For example, the following:

	#include <x509.h>
	#include <bio.h>
	#include <asn1.h>

would make sure that things like ASN1_UTCTIME_print() wasn't defined
unless you moved the inclusion of bio.h to above the inclusion of
x509.h.  The reason is that x509.h includes asn1.h, and the
declaration of ASN1_UTCTIME_print() depended on the definition of
HEADER_BIO_H.  That's what I call an obscure bug.

Instead, this change makes sure that whatever header files are needed
for the correct process of one header file are included automagically,
and that the definitions of, for example, BIO-related things are
dependent on the absence of the NO_{foo} macros.  This is also
consistent with the way parts of OpenSSL can be excluded at will.
2000-06-09 10:41:35 +00:00

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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 NO_DSA
#error DSA is disabled.
#endif
#ifndef NO_BIO
#include <openssl/bio.h>
#endif
#include <openssl/bn.h>
#include <openssl/crypto.h>
#ifndef NO_DH
# include <openssl/dh.h>
#endif
#define DSA_FLAG_CACHE_MONT_P 0x01
#ifdef __cplusplus
extern "C" {
#endif
typedef struct dsa_st DSA;
typedef struct DSA_SIG_st
{
BIGNUM *r;
BIGNUM *s;
} DSA_SIG;
typedef struct dsa_method {
const char *name;
DSA_SIG * (*dsa_do_sign)(const unsigned char *dgst, int dlen, DSA *dsa);
int (*dsa_sign_setup)(DSA *dsa, BN_CTX *ctx_in, BIGNUM **kinvp,
BIGNUM **rp);
int (*dsa_do_verify)(const unsigned char *dgst, int dgst_len,
DSA_SIG *sig, DSA *dsa);
int (*dsa_mod_exp)(DSA *dsa, BIGNUM *rr, BIGNUM *a1, BIGNUM *p1,
BIGNUM *a2, BIGNUM *p2, BIGNUM *m, BN_CTX *ctx,
BN_MONT_CTX *in_mont);
int (*bn_mod_exp)(DSA *dsa, BIGNUM *r, BIGNUM *a, const BIGNUM *p,
const BIGNUM *m, BN_CTX *ctx,
BN_MONT_CTX *m_ctx); /* Can be null */
int (*init)(DSA *dsa);
int (*finish)(DSA *dsa);
int flags;
char *app_data;
} DSA_METHOD;
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 flags;
/* Normally used to cache montgomery values */
char *method_mont_p;
int references;
CRYPTO_EX_DATA ex_data;
DSA_METHOD *meth;
};
#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))
DSA_SIG * DSA_SIG_new(void);
void DSA_SIG_free(DSA_SIG *a);
int i2d_DSA_SIG(DSA_SIG *a, unsigned char **pp);
DSA_SIG * d2i_DSA_SIG(DSA_SIG **v, unsigned char **pp, long length);
DSA_SIG * DSA_do_sign(const unsigned char *dgst,int dlen,DSA *dsa);
int DSA_do_verify(const unsigned char *dgst,int dgst_len,
DSA_SIG *sig,DSA *dsa);
DSA_METHOD *DSA_OpenSSL(void);
void DSA_set_default_method(DSA_METHOD *);
DSA_METHOD *DSA_get_default_method(void);
DSA_METHOD *DSA_set_method(DSA *dsa, DSA_METHOD *);
DSA * DSA_new(void);
DSA * DSA_new_method(DSA_METHOD *meth);
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,const unsigned char *dgst,int dlen,
unsigned char *sig, unsigned int *siglen, DSA *dsa);
int DSA_verify(int type,const unsigned char *dgst,int dgst_len,
unsigned char *sigbuf, int siglen, DSA *dsa);
void DSA_free (DSA *r);
int DSA_get_ex_new_index(long argl, void *argp, CRYPTO_EX_new *new_func,
CRYPTO_EX_dup *dup_func, CRYPTO_EX_free *free_func);
int DSA_set_ex_data(DSA *d, int idx, void *arg);
void *DSA_get_ex_data(DSA *d, int idx);
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)(int, int, void *),void *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);
#ifndef NO_BIO
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
#define DSS_prime_checks 50
/* Primality test according to FIPS PUB 186[-1], Appendix 2.1:
* 50 rounds of Rabin-Miller */
#define DSA_is_prime(n, callback, cb_arg) \
BN_is_prime(n, DSS_prime_checks, callback, NULL, cb_arg)
#ifndef NO_DH
/* Convert DSA structure (key or just parameters) into DH structure
* (be careful to avoid small subgroup attacks when using this!) */
DH *DSA_dup_DH(DSA *r);
#endif
/* BEGIN ERROR CODES */
/* The following lines are auto generated by the script mkerr.pl. Any changes
* made after this point may be overwritten when the script is next run.
*/
/* Error codes for the DSA functions. */
/* Function codes. */
#define DSA_F_D2I_DSA_SIG 110
#define DSA_F_DSAPARAMS_PRINT 100
#define DSA_F_DSAPARAMS_PRINT_FP 101
#define DSA_F_DSA_DO_SIGN 112
#define DSA_F_DSA_DO_VERIFY 113
#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_SIG_NEW 109
#define DSA_F_DSA_VERIFY 108
#define DSA_F_I2D_DSA_SIG 111
/* Reason codes. */
#define DSA_R_DATA_TOO_LARGE_FOR_KEY_SIZE 100
#ifdef __cplusplus
}
#endif
#endif
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