1 /* $OpenBSD: dsa_meth.c,v 1.7 2023/07/08 14:28:15 beck Exp $ */ 2 /* 3 * Copyright (c) 2018 Theo Buehler <tb@openbsd.org> 4 * 5 * Permission to use, copy, modify, and distribute this software for any 6 * purpose with or without fee is hereby granted, provided that the above 7 * copyright notice and this permission notice appear in all copies. 8 * 9 * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES 10 * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF 11 * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR 12 * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES 13 * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN 14 * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF 15 * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE. 16 */ 17 18 #include <stdlib.h> 19 #include <string.h> 20 21 #include <openssl/dsa.h> 22 #include <openssl/err.h> 23 24 #include "dsa_local.h" 25 26 DSA_METHOD * 27 DSA_meth_new(const char *name, int flags) 28 { 29 DSA_METHOD *meth; 30 31 if ((meth = calloc(1, sizeof(*meth))) == NULL) 32 return NULL; 33 if ((meth->name = strdup(name)) == NULL) { 34 free(meth); 35 return NULL; 36 } 37 meth->flags = flags; 38 39 return meth; 40 } 41 LCRYPTO_ALIAS(DSA_meth_new); 42 43 void 44 DSA_meth_free(DSA_METHOD *meth) 45 { 46 if (meth == NULL) 47 return; 48 49 free(meth->name); 50 free(meth); 51 } 52 LCRYPTO_ALIAS(DSA_meth_free); 53 54 DSA_METHOD * 55 DSA_meth_dup(const DSA_METHOD *meth) 56 { 57 DSA_METHOD *copy; 58 59 if ((copy = calloc(1, sizeof(*copy))) == NULL) 60 return NULL; 61 memcpy(copy, meth, sizeof(*copy)); 62 if ((copy->name = strdup(meth->name)) == NULL) { 63 free(copy); 64 return NULL; 65 } 66 67 return copy; 68 } 69 LCRYPTO_ALIAS(DSA_meth_dup); 70 71 const char * 72 DSA_meth_get0_name(const DSA_METHOD *meth) 73 { 74 return meth->name; 75 } 76 LCRYPTO_ALIAS(DSA_meth_get0_name); 77 78 int 79 DSA_meth_set1_name(DSA_METHOD *meth, const char *name) 80 { 81 char *new_name; 82 83 if ((new_name = strdup(name)) == NULL) { 84 DSAerror(ERR_R_MALLOC_FAILURE); 85 return 0; 86 } 87 88 free(meth->name); 89 meth->name = new_name; 90 91 return 1; 92 } 93 LCRYPTO_ALIAS(DSA_meth_set1_name); 94 95 int 96 DSA_meth_set_sign(DSA_METHOD *meth, 97 DSA_SIG *(*sign)(const unsigned char *, int, DSA *)) 98 { 99 meth->dsa_do_sign = sign; 100 return 1; 101 } 102 LCRYPTO_ALIAS(DSA_meth_set_sign); 103 104 int 105 DSA_meth_set_finish(DSA_METHOD *meth, int (*finish)(DSA *)) 106 { 107 meth->finish = finish; 108 return 1; 109 } 110 LCRYPTO_ALIAS(DSA_meth_set_finish); 111