1 /* $OpenBSD: ecs_asn1.c,v 1.11 2022/09/03 16:01:23 jsing Exp $ */ 2 /* ==================================================================== 3 * Copyright (c) 2000-2002 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 * licensing@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 "ecs_locl.h" 57 #include <openssl/err.h> 58 #include <openssl/asn1t.h> 59 60 static const ASN1_TEMPLATE ECDSA_SIG_seq_tt[] = { 61 { 62 .flags = 0, 63 .tag = 0, 64 .offset = offsetof(ECDSA_SIG, r), 65 .field_name = "r", 66 .item = &BIGNUM_it, 67 }, 68 { 69 .flags = 0, 70 .tag = 0, 71 .offset = offsetof(ECDSA_SIG, s), 72 .field_name = "s", 73 .item = &BIGNUM_it, 74 }, 75 }; 76 77 const ASN1_ITEM ECDSA_SIG_it = { 78 .itype = ASN1_ITYPE_SEQUENCE, 79 .utype = V_ASN1_SEQUENCE, 80 .templates = ECDSA_SIG_seq_tt, 81 .tcount = sizeof(ECDSA_SIG_seq_tt) / sizeof(ASN1_TEMPLATE), 82 .funcs = NULL, 83 .size = sizeof(ECDSA_SIG), 84 .sname = "ECDSA_SIG", 85 }; 86 87 ECDSA_SIG *ECDSA_SIG_new(void); 88 void ECDSA_SIG_free(ECDSA_SIG *a); 89 ECDSA_SIG *d2i_ECDSA_SIG(ECDSA_SIG **a, const unsigned char **in, long len); 90 int i2d_ECDSA_SIG(const ECDSA_SIG *a, unsigned char **out); 91 92 ECDSA_SIG * 93 d2i_ECDSA_SIG(ECDSA_SIG **a, const unsigned char **in, long len) 94 { 95 return (ECDSA_SIG *)ASN1_item_d2i((ASN1_VALUE **)a, in, len, 96 &ECDSA_SIG_it); 97 } 98 99 int 100 i2d_ECDSA_SIG(const ECDSA_SIG *a, unsigned char **out) 101 { 102 return ASN1_item_i2d((ASN1_VALUE *)a, out, &ECDSA_SIG_it); 103 } 104 105 ECDSA_SIG * 106 ECDSA_SIG_new(void) 107 { 108 return (ECDSA_SIG *)ASN1_item_new(&ECDSA_SIG_it); 109 } 110 111 void 112 ECDSA_SIG_free(ECDSA_SIG *a) 113 { 114 ASN1_item_free((ASN1_VALUE *)a, &ECDSA_SIG_it); 115 } 116 117 void 118 ECDSA_SIG_get0(const ECDSA_SIG *sig, const BIGNUM **pr, const BIGNUM **ps) 119 { 120 if (pr != NULL) 121 *pr = sig->r; 122 if (ps != NULL) 123 *ps = sig->s; 124 } 125 126 const BIGNUM * 127 ECDSA_SIG_get0_r(const ECDSA_SIG *sig) 128 { 129 return sig->r; 130 } 131 132 const BIGNUM * 133 ECDSA_SIG_get0_s(const ECDSA_SIG *sig) 134 { 135 return sig->s; 136 } 137 138 int 139 ECDSA_SIG_set0(ECDSA_SIG *sig, BIGNUM *r, BIGNUM *s) 140 { 141 if (r == NULL || s == NULL) 142 return 0; 143 144 BN_clear_free(sig->r); 145 BN_clear_free(sig->s); 146 sig->r = r; 147 sig->s = s; 148 return 1; 149 } 150