/* * Copyright (c) 2000-2002 Apple Computer, Inc. All Rights Reserved. * * The contents of this file constitute Original Code as defined in and are * subject to the Apple Public Source License Version 1.2 (the 'License'). * You may not use this file except in compliance with the License. Please obtain * a copy of the License at http://www.apple.com/publicsource and read it before * using this file. * * This Original Code and all software distributed under the License are * distributed on an 'AS IS' basis, WITHOUT WARRANTY OF ANY KIND, EITHER EXPRESS * OR IMPLIED, AND APPLE HEREBY DISCLAIMS ALL SUCH WARRANTIES, INCLUDING WITHOUT * LIMITATION, ANY WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR * PURPOSE, QUIET ENJOYMENT OR NON-INFRINGEMENT. Please see the License for the * specific language governing rights and limitations under the License. */ /* crypto/dh/dh.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.] */ #ifndef HEADER_DH_H #define HEADER_DH_H #ifdef NO_DH #error DH is disabled. #endif #ifndef NO_BIO #include <openssl/bio.h> #endif #include <openssl/bn.h> #include <openssl/crypto.h> #define DH_FLAG_CACHE_MONT_P 0x01 #ifdef __cplusplus extern "C" { #endif typedef struct dh_st DH; typedef struct dh_method { const char *name; /* Methods here */ int (*generate_key)(DH *dh); int (*compute_key)(unsigned char *key,BIGNUM *pub_key,DH *dh); int (*bn_mod_exp)(DH *dh, BIGNUM *r, BIGNUM *a, const BIGNUM *p, const BIGNUM *m, BN_CTX *ctx, BN_MONT_CTX *m_ctx); /* Can be null */ int (*init)(DH *dh); int (*finish)(DH *dh); int flags; char *app_data; } DH_METHOD; struct dh_st { /* This first argument is used to pick up errors when * a DH is passed instead of a EVP_PKEY */ int pad; int version; BIGNUM *p; BIGNUM *g; int length; /* optional */ BIGNUM *pub_key; /* g^x */ BIGNUM *priv_key; /* x */ int flags; char *method_mont_p; /* Place holders if we want to do X9.42 DH */ BIGNUM *q; BIGNUM *j; unsigned char *seed; int seedlen; BIGNUM *counter; int references; CRYPTO_EX_DATA ex_data; DH_METHOD *meth; }; #define DH_GENERATOR_2 2 /* #define DH_GENERATOR_3 3 */ #define DH_GENERATOR_5 5 /* DH_check error codes */ #define DH_CHECK_P_NOT_PRIME 0x01 #define DH_CHECK_P_NOT_SAFE_PRIME 0x02 #define DH_UNABLE_TO_CHECK_GENERATOR 0x04 #define DH_NOT_SUITABLE_GENERATOR 0x08 /* primes p where (p-1)/2 is prime too are called "safe"; we define this for backward compatibility: */ #define DH_CHECK_P_NOT_STRONG_PRIME DH_CHECK_P_NOT_SAFE_PRIME #define DHparams_dup(x) (DH *)ASN1_dup((int (*)())i2d_DHparams, \ (char *(*)())d2i_DHparams,(char *)(x)) #define d2i_DHparams_fp(fp,x) (DH *)ASN1_d2i_fp((char *(*)())DH_new, \ (char *(*)())d2i_DHparams,(fp),(unsigned char **)(x)) #define i2d_DHparams_fp(fp,x) ASN1_i2d_fp(i2d_DHparams,(fp), \ (unsigned char *)(x)) #define d2i_DHparams_bio(bp,x) (DH *)ASN1_d2i_bio((char *(*)())DH_new, \ (char *(*)())d2i_DHparams,(bp),(unsigned char **)(x)) #ifdef __cplusplus #define i2d_DHparams_bio(bp,x) ASN1_i2d_bio((int (*)())i2d_DHparams,(bp), \ (unsigned char *)(x)) #else #define i2d_DHparams_bio(bp,x) ASN1_i2d_bio(i2d_DHparams,(bp), \ (unsigned char *)(x)) #endif DH_METHOD *DH_OpenSSL(void); void DH_set_default_method(DH_METHOD *meth); DH_METHOD *DH_get_default_method(void); DH_METHOD *DH_set_method(DH *dh, DH_METHOD *meth); DH *DH_new_method(DH_METHOD *meth); DH * DH_new(void); void DH_free(DH *dh); int DH_size(DH *dh); int DH_get_ex_new_index(long argl, void *argp, CRYPTO_EX_new *new_func, CRYPTO_EX_dup *dup_func, CRYPTO_EX_free *free_func); int DH_set_ex_data(DH *d, int idx, void *arg); void *DH_get_ex_data(DH *d, int idx); DH * DH_generate_parameters(int prime_len,int generator, void (*callback)(int,int,void *),void *cb_arg); int DH_check(DH *dh,int *codes); int DH_generate_key(DH *dh); int DH_compute_key(unsigned char *key,BIGNUM *pub_key,DH *dh); DH * d2i_DHparams(DH **a,unsigned char **pp, long length); int i2d_DHparams(DH *a,unsigned char **pp); #ifndef NO_FP_API int DHparams_print_fp(FILE *fp, DH *x); #endif #ifndef NO_BIO int DHparams_print(BIO *bp, DH *x); #else int DHparams_print(char *bp, DH *x); #endif void ERR_load_DH_strings(void ); /* 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 DH functions. */ /* Function codes. */ #define DH_F_DHPARAMS_PRINT 100 #define DH_F_DHPARAMS_PRINT_FP 101 #define DH_F_DH_COMPUTE_KEY 102 #define DH_F_DH_GENERATE_KEY 103 #define DH_F_DH_GENERATE_PARAMETERS 104 #define DH_F_DH_NEW 105 /* Reason codes. */ #define DH_R_NO_PRIVATE_VALUE 100 #ifdef __cplusplus } #endif #endif