📄 dsa.h
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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 __cplusplusextern "C" {#endiftypedef 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;#if 0 DSA_METHOD *meth;#else struct engine_st *engine;#endif };#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_openssl_method(DSA_METHOD *);DSA_METHOD *DSA_get_default_openssl_method(void);#if 0DSA_METHOD *DSA_set_method(DSA *dsa, DSA_METHOD *);#elseint DSA_set_method(DSA *dsa, struct engine_st *engine);#endifDSA * DSA_new(void);#if 0DSA * DSA_new_method(DSA_METHOD *meth);#elseDSA * DSA_new_method(struct engine_st *engine);#endifint 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);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_BIOint DSAparams_print(BIO *bp, DSA *x);int DSA_print(BIO *bp, DSA *x, int off);#endif#ifndef NO_FP_APIint 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. */void ERR_load_DSA_strings(void);/* 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#define DSA_R_MISSING_PARAMETERS 101#ifdef __cplusplus}#endif#endif
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