1 /* 2 * Copyright 2016-2018 The OpenSSL Project Authors. All Rights Reserved. 3 * 4 * Licensed under the OpenSSL license (the "License"). You may not use 5 * this file except in compliance with the License. You can obtain a copy 6 * in the file LICENSE in the source distribution or at 7 * https://www.openssl.org/source/license.html 8 */ 9 10 #include <string.h> 11 #include "rsa_local.h" 12 #include <openssl/err.h> 13 14 RSA_METHOD *RSA_meth_new(const char *name, int flags) 15 { 16 RSA_METHOD *meth = OPENSSL_zalloc(sizeof(*meth)); 17 18 if (meth != NULL) { 19 meth->flags = flags; 20 21 meth->name = OPENSSL_strdup(name); 22 if (meth->name != NULL) 23 return meth; 24 25 OPENSSL_free(meth); 26 } 27 28 RSAerr(RSA_F_RSA_METH_NEW, ERR_R_MALLOC_FAILURE); 29 return NULL; 30 } 31 32 void RSA_meth_free(RSA_METHOD *meth) 33 { 34 if (meth != NULL) { 35 OPENSSL_free(meth->name); 36 OPENSSL_free(meth); 37 } 38 } 39 40 RSA_METHOD *RSA_meth_dup(const RSA_METHOD *meth) 41 { 42 RSA_METHOD *ret = OPENSSL_malloc(sizeof(*ret)); 43 44 if (ret != NULL) { 45 memcpy(ret, meth, sizeof(*meth)); 46 47 ret->name = OPENSSL_strdup(meth->name); 48 if (ret->name != NULL) 49 return ret; 50 51 OPENSSL_free(ret); 52 } 53 54 RSAerr(RSA_F_RSA_METH_DUP, ERR_R_MALLOC_FAILURE); 55 return NULL; 56 } 57 58 const char *RSA_meth_get0_name(const RSA_METHOD *meth) 59 { 60 return meth->name; 61 } 62 63 int RSA_meth_set1_name(RSA_METHOD *meth, const char *name) 64 { 65 char *tmpname = OPENSSL_strdup(name); 66 67 if (tmpname == NULL) { 68 RSAerr(RSA_F_RSA_METH_SET1_NAME, ERR_R_MALLOC_FAILURE); 69 return 0; 70 } 71 72 OPENSSL_free(meth->name); 73 meth->name = tmpname; 74 75 return 1; 76 } 77 78 int RSA_meth_get_flags(const RSA_METHOD *meth) 79 { 80 return meth->flags; 81 } 82 83 int RSA_meth_set_flags(RSA_METHOD *meth, int flags) 84 { 85 meth->flags = flags; 86 return 1; 87 } 88 89 void *RSA_meth_get0_app_data(const RSA_METHOD *meth) 90 { 91 return meth->app_data; 92 } 93 94 int RSA_meth_set0_app_data(RSA_METHOD *meth, void *app_data) 95 { 96 meth->app_data = app_data; 97 return 1; 98 } 99 100 int (*RSA_meth_get_pub_enc(const RSA_METHOD *meth)) 101 (int flen, const unsigned char *from, 102 unsigned char *to, RSA *rsa, int padding) 103 { 104 return meth->rsa_pub_enc; 105 } 106 107 int RSA_meth_set_pub_enc(RSA_METHOD *meth, 108 int (*pub_enc) (int flen, const unsigned char *from, 109 unsigned char *to, RSA *rsa, 110 int padding)) 111 { 112 meth->rsa_pub_enc = pub_enc; 113 return 1; 114 } 115 116 int (*RSA_meth_get_pub_dec(const RSA_METHOD *meth)) 117 (int flen, const unsigned char *from, 118 unsigned char *to, RSA *rsa, int padding) 119 { 120 return meth->rsa_pub_dec; 121 } 122 123 int RSA_meth_set_pub_dec(RSA_METHOD *meth, 124 int (*pub_dec) (int flen, const unsigned char *from, 125 unsigned char *to, RSA *rsa, 126 int padding)) 127 { 128 meth->rsa_pub_dec = pub_dec; 129 return 1; 130 } 131 132 int (*RSA_meth_get_priv_enc(const RSA_METHOD *meth)) 133 (int flen, const unsigned char *from, 134 unsigned char *to, RSA *rsa, int padding) 135 { 136 return meth->rsa_priv_enc; 137 } 138 139 int RSA_meth_set_priv_enc(RSA_METHOD *meth, 140 int (*priv_enc) (int flen, const unsigned char *from, 141 unsigned char *to, RSA *rsa, 142 int padding)) 143 { 144 meth->rsa_priv_enc = priv_enc; 145 return 1; 146 } 147 148 int (*RSA_meth_get_priv_dec(const RSA_METHOD *meth)) 149 (int flen, const unsigned char *from, 150 unsigned char *to, RSA *rsa, int padding) 151 { 152 return meth->rsa_priv_dec; 153 } 154 155 int RSA_meth_set_priv_dec(RSA_METHOD *meth, 156 int (*priv_dec) (int flen, const unsigned char *from, 157 unsigned char *to, RSA *rsa, 158 int padding)) 159 { 160 meth->rsa_priv_dec = priv_dec; 161 return 1; 162 } 163 164 /* Can be null */ 165 int (*RSA_meth_get_mod_exp(const RSA_METHOD *meth)) 166 (BIGNUM *r0, const BIGNUM *i, RSA *rsa, BN_CTX *ctx) 167 { 168 return meth->rsa_mod_exp; 169 } 170 171 int RSA_meth_set_mod_exp(RSA_METHOD *meth, 172 int (*mod_exp) (BIGNUM *r0, const BIGNUM *i, RSA *rsa, 173 BN_CTX *ctx)) 174 { 175 meth->rsa_mod_exp = mod_exp; 176 return 1; 177 } 178 179 /* Can be null */ 180 int (*RSA_meth_get_bn_mod_exp(const RSA_METHOD *meth)) 181 (BIGNUM *r, const BIGNUM *a, const BIGNUM *p, 182 const BIGNUM *m, BN_CTX *ctx, BN_MONT_CTX *m_ctx) 183 { 184 return meth->bn_mod_exp; 185 } 186 187 int RSA_meth_set_bn_mod_exp(RSA_METHOD *meth, 188 int (*bn_mod_exp) (BIGNUM *r, 189 const BIGNUM *a, 190 const BIGNUM *p, 191 const BIGNUM *m, 192 BN_CTX *ctx, 193 BN_MONT_CTX *m_ctx)) 194 { 195 meth->bn_mod_exp = bn_mod_exp; 196 return 1; 197 } 198 199 /* called at new */ 200 int (*RSA_meth_get_init(const RSA_METHOD *meth)) (RSA *rsa) 201 { 202 return meth->init; 203 } 204 205 int RSA_meth_set_init(RSA_METHOD *meth, int (*init) (RSA *rsa)) 206 { 207 meth->init = init; 208 return 1; 209 } 210 211 /* called at free */ 212 int (*RSA_meth_get_finish(const RSA_METHOD *meth)) (RSA *rsa) 213 { 214 return meth->finish; 215 } 216 217 int RSA_meth_set_finish(RSA_METHOD *meth, int (*finish) (RSA *rsa)) 218 { 219 meth->finish = finish; 220 return 1; 221 } 222 223 int (*RSA_meth_get_sign(const RSA_METHOD *meth)) 224 (int type, 225 const unsigned char *m, unsigned int m_length, 226 unsigned char *sigret, unsigned int *siglen, 227 const RSA *rsa) 228 { 229 return meth->rsa_sign; 230 } 231 232 int RSA_meth_set_sign(RSA_METHOD *meth, 233 int (*sign) (int type, const unsigned char *m, 234 unsigned int m_length, 235 unsigned char *sigret, unsigned int *siglen, 236 const RSA *rsa)) 237 { 238 meth->rsa_sign = sign; 239 return 1; 240 } 241 242 int (*RSA_meth_get_verify(const RSA_METHOD *meth)) 243 (int dtype, const unsigned char *m, 244 unsigned int m_length, const unsigned char *sigbuf, 245 unsigned int siglen, const RSA *rsa) 246 { 247 return meth->rsa_verify; 248 } 249 250 int RSA_meth_set_verify(RSA_METHOD *meth, 251 int (*verify) (int dtype, const unsigned char *m, 252 unsigned int m_length, 253 const unsigned char *sigbuf, 254 unsigned int siglen, const RSA *rsa)) 255 { 256 meth->rsa_verify = verify; 257 return 1; 258 } 259 260 int (*RSA_meth_get_keygen(const RSA_METHOD *meth)) 261 (RSA *rsa, int bits, BIGNUM *e, BN_GENCB *cb) 262 { 263 return meth->rsa_keygen; 264 } 265 266 int RSA_meth_set_keygen(RSA_METHOD *meth, 267 int (*keygen) (RSA *rsa, int bits, BIGNUM *e, 268 BN_GENCB *cb)) 269 { 270 meth->rsa_keygen = keygen; 271 return 1; 272 } 273 274 int (*RSA_meth_get_multi_prime_keygen(const RSA_METHOD *meth)) 275 (RSA *rsa, int bits, int primes, BIGNUM *e, BN_GENCB *cb) 276 { 277 return meth->rsa_multi_prime_keygen; 278 } 279 280 int RSA_meth_set_multi_prime_keygen(RSA_METHOD *meth, 281 int (*keygen) (RSA *rsa, int bits, 282 int primes, BIGNUM *e, 283 BN_GENCB *cb)) 284 { 285 meth->rsa_multi_prime_keygen = keygen; 286 return 1; 287 } 288