1 /* $OpenBSD: dsa_local.h,v 1.5 2024/11/29 07:42:35 tb Exp $ */ 2 /* ==================================================================== 3 * Copyright (c) 2007 The OpenSSL Project. All rights reserved. 4 * 5 * Redistribution and use in source and binary forms, with or without 6 * modification, are permitted provided that the following conditions 7 * are met: 8 * 9 * 1. Redistributions of source code must retain the above copyright 10 * notice, this list of conditions and the following disclaimer. 11 * 12 * 2. Redistributions in binary form must reproduce the above copyright 13 * notice, this list of conditions and the following disclaimer in 14 * the documentation and/or other materials provided with the 15 * distribution. 16 * 17 * 3. All advertising materials mentioning features or use of this 18 * software must display the following acknowledgment: 19 * "This product includes software developed by the OpenSSL Project 20 * for use in the OpenSSL Toolkit. (http://www.openssl.org/)" 21 * 22 * 4. The names "OpenSSL Toolkit" and "OpenSSL Project" must not be used to 23 * endorse or promote products derived from this software without 24 * prior written permission. For written permission, please contact 25 * openssl-core@openssl.org. 26 * 27 * 5. Products derived from this software may not be called "OpenSSL" 28 * nor may "OpenSSL" appear in their names without prior written 29 * permission of the OpenSSL Project. 30 * 31 * 6. Redistributions of any form whatsoever must retain the following 32 * acknowledgment: 33 * "This product includes software developed by the OpenSSL Project 34 * for use in the OpenSSL Toolkit (http://www.openssl.org/)" 35 * 36 * THIS SOFTWARE IS PROVIDED BY THE OpenSSL PROJECT ``AS IS'' AND ANY 37 * EXPRESSED OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 38 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR 39 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE OpenSSL PROJECT OR 40 * ITS CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, 41 * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT 42 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; 43 * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 44 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, 45 * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) 46 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED 47 * OF THE POSSIBILITY OF SUCH DAMAGE. 48 * ==================================================================== 49 * 50 * This product includes cryptographic software written by Eric Young 51 * (eay@cryptsoft.com). This product includes software written by Tim 52 * Hudson (tjh@cryptsoft.com). 53 * 54 */ 55 56 #include <openssl/dsa.h> 57 58 __BEGIN_HIDDEN_DECLS 59 60 struct DSA_SIG_st { 61 BIGNUM *r; 62 BIGNUM *s; 63 } /* DSA_SIG */; 64 65 struct dsa_method { 66 char *name; 67 DSA_SIG *(*dsa_do_sign)(const unsigned char *dgst, int dlen, DSA *dsa); 68 int (*dsa_sign_setup)(DSA *dsa, BN_CTX *ctx_in, BIGNUM **kinvp, 69 BIGNUM **rp); 70 int (*dsa_do_verify)(const unsigned char *dgst, int dgst_len, 71 DSA_SIG *sig, DSA *dsa); 72 int (*init)(DSA *dsa); 73 int (*finish)(DSA *dsa); 74 int flags; 75 } /* DSA_METHOD */; 76 77 struct dsa_st { 78 long version; 79 BIGNUM *p; 80 BIGNUM *q; /* == 20 */ 81 BIGNUM *g; 82 83 BIGNUM *pub_key; /* y public key */ 84 BIGNUM *priv_key; /* x private key */ 85 86 BIGNUM *kinv; /* Signing pre-calc */ 87 BIGNUM *r; /* Signing pre-calc */ 88 89 int flags; 90 /* Normally used to cache montgomery values */ 91 BN_MONT_CTX *method_mont_p; 92 int references; 93 CRYPTO_EX_DATA ex_data; 94 const DSA_METHOD *meth; 95 } /* DSA */; 96 97 int dsa_builtin_paramgen(DSA *ret, size_t bits, size_t qbits, 98 const EVP_MD *evpmd, const unsigned char *seed_in, size_t seed_len, 99 unsigned char *seed_out, 100 int *counter_ret, unsigned long *h_ret, BN_GENCB *cb); 101 102 int dsa_check_key(const DSA *dsa); 103 104 __END_HIDDEN_DECLS 105