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| 1 /* crypto/rsa/rsa_ameth.c */ |
| 2 /* Written by Dr Stephen N Henson (steve@openssl.org) for the OpenSSL |
| 3 * project 2006. |
| 4 */ |
| 5 /* ==================================================================== |
| 6 * Copyright (c) 2006 The OpenSSL Project. All rights reserved. |
| 7 * |
| 8 * Redistribution and use in source and binary forms, with or without |
| 9 * modification, are permitted provided that the following conditions |
| 10 * are met: |
| 11 * |
| 12 * 1. Redistributions of source code must retain the above copyright |
| 13 * notice, this list of conditions and the following disclaimer. |
| 14 * |
| 15 * 2. Redistributions in binary form must reproduce the above copyright |
| 16 * notice, this list of conditions and the following disclaimer in |
| 17 * the documentation and/or other materials provided with the |
| 18 * distribution. |
| 19 * |
| 20 * 3. All advertising materials mentioning features or use of this |
| 21 * software must display the following acknowledgment: |
| 22 * "This product includes software developed by the OpenSSL Project |
| 23 * for use in the OpenSSL Toolkit. (http://www.OpenSSL.org/)" |
| 24 * |
| 25 * 4. The names "OpenSSL Toolkit" and "OpenSSL Project" must not be used to |
| 26 * endorse or promote products derived from this software without |
| 27 * prior written permission. For written permission, please contact |
| 28 * licensing@OpenSSL.org. |
| 29 * |
| 30 * 5. Products derived from this software may not be called "OpenSSL" |
| 31 * nor may "OpenSSL" appear in their names without prior written |
| 32 * permission of the OpenSSL Project. |
| 33 * |
| 34 * 6. Redistributions of any form whatsoever must retain the following |
| 35 * acknowledgment: |
| 36 * "This product includes software developed by the OpenSSL Project |
| 37 * for use in the OpenSSL Toolkit (http://www.OpenSSL.org/)" |
| 38 * |
| 39 * THIS SOFTWARE IS PROVIDED BY THE OpenSSL PROJECT ``AS IS'' AND ANY |
| 40 * EXPRESSED OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE |
| 41 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR |
| 42 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE OpenSSL PROJECT OR |
| 43 * ITS CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, |
| 44 * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT |
| 45 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; |
| 46 * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) |
| 47 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, |
| 48 * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) |
| 49 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED |
| 50 * OF THE POSSIBILITY OF SUCH DAMAGE. |
| 51 * ==================================================================== |
| 52 * |
| 53 * This product includes cryptographic software written by Eric Young |
| 54 * (eay@cryptsoft.com). This product includes software written by Tim |
| 55 * Hudson (tjh@cryptsoft.com). |
| 56 * |
| 57 */ |
| 58 |
| 59 #include <stdio.h> |
| 60 #include "cryptlib.h" |
| 61 #include <openssl/asn1t.h> |
| 62 #include <openssl/x509.h> |
| 63 #include <openssl/rsa.h> |
| 64 #include <openssl/bn.h> |
| 65 #ifndef OPENSSL_NO_CMS |
| 66 #include <openssl/cms.h> |
| 67 #endif |
| 68 #include "asn1_locl.h" |
| 69 |
| 70 static int rsa_pub_encode(X509_PUBKEY *pk, const EVP_PKEY *pkey) |
| 71 { |
| 72 unsigned char *penc = NULL; |
| 73 int penclen; |
| 74 penclen = i2d_RSAPublicKey(pkey->pkey.rsa, &penc); |
| 75 if (penclen <= 0) |
| 76 return 0; |
| 77 if (X509_PUBKEY_set0_param(pk, OBJ_nid2obj(EVP_PKEY_RSA), |
| 78 V_ASN1_NULL, NULL, penc, penclen)) |
| 79 return 1; |
| 80 |
| 81 OPENSSL_free(penc); |
| 82 return 0; |
| 83 } |
| 84 |
| 85 static int rsa_pub_decode(EVP_PKEY *pkey, X509_PUBKEY *pubkey) |
| 86 { |
| 87 const unsigned char *p; |
| 88 int pklen; |
| 89 RSA *rsa = NULL; |
| 90 if (!X509_PUBKEY_get0_param(NULL, &p, &pklen, NULL, pubkey)) |
| 91 return 0; |
| 92 if (!(rsa = d2i_RSAPublicKey(NULL, &p, pklen))) |
| 93 { |
| 94 RSAerr(RSA_F_RSA_PUB_DECODE, ERR_R_RSA_LIB); |
| 95 return 0; |
| 96 } |
| 97 EVP_PKEY_assign_RSA (pkey, rsa); |
| 98 return 1; |
| 99 } |
| 100 |
| 101 static int rsa_pub_cmp(const EVP_PKEY *a, const EVP_PKEY *b) |
| 102 { |
| 103 if (BN_cmp(b->pkey.rsa->n,a->pkey.rsa->n) != 0 |
| 104 || BN_cmp(b->pkey.rsa->e,a->pkey.rsa->e) != 0) |
| 105 return 0; |
| 106 return 1; |
| 107 } |
| 108 |
| 109 static int old_rsa_priv_decode(EVP_PKEY *pkey, |
| 110 const unsigned char **pder, int derlen) |
| 111 { |
| 112 RSA *rsa; |
| 113 if (!(rsa = d2i_RSAPrivateKey (NULL, pder, derlen))) |
| 114 { |
| 115 RSAerr(RSA_F_OLD_RSA_PRIV_DECODE, ERR_R_RSA_LIB); |
| 116 return 0; |
| 117 } |
| 118 EVP_PKEY_assign_RSA(pkey, rsa); |
| 119 return 1; |
| 120 } |
| 121 |
| 122 static int old_rsa_priv_encode(const EVP_PKEY *pkey, unsigned char **pder) |
| 123 { |
| 124 return i2d_RSAPrivateKey(pkey->pkey.rsa, pder); |
| 125 } |
| 126 |
| 127 static int rsa_priv_encode(PKCS8_PRIV_KEY_INFO *p8, const EVP_PKEY *pkey) |
| 128 { |
| 129 unsigned char *rk = NULL; |
| 130 int rklen; |
| 131 rklen = i2d_RSAPrivateKey(pkey->pkey.rsa, &rk); |
| 132 |
| 133 if (rklen <= 0) |
| 134 { |
| 135 RSAerr(RSA_F_RSA_PRIV_ENCODE,ERR_R_MALLOC_FAILURE); |
| 136 return 0; |
| 137 } |
| 138 |
| 139 if (!PKCS8_pkey_set0(p8, OBJ_nid2obj(NID_rsaEncryption), 0, |
| 140 V_ASN1_NULL, NULL, rk, rklen)) |
| 141 { |
| 142 RSAerr(RSA_F_RSA_PRIV_ENCODE,ERR_R_MALLOC_FAILURE); |
| 143 return 0; |
| 144 } |
| 145 |
| 146 return 1; |
| 147 } |
| 148 |
| 149 static int rsa_priv_decode(EVP_PKEY *pkey, PKCS8_PRIV_KEY_INFO *p8) |
| 150 { |
| 151 const unsigned char *p; |
| 152 int pklen; |
| 153 if (!PKCS8_pkey_get0(NULL, &p, &pklen, NULL, p8)) |
| 154 return 0; |
| 155 return old_rsa_priv_decode(pkey, &p, pklen); |
| 156 } |
| 157 |
| 158 static int int_rsa_size(const EVP_PKEY *pkey) |
| 159 { |
| 160 return RSA_size(pkey->pkey.rsa); |
| 161 } |
| 162 |
| 163 static int rsa_bits(const EVP_PKEY *pkey) |
| 164 { |
| 165 return BN_num_bits(pkey->pkey.rsa->n); |
| 166 } |
| 167 |
| 168 static void int_rsa_free(EVP_PKEY *pkey) |
| 169 { |
| 170 RSA_free(pkey->pkey.rsa); |
| 171 } |
| 172 |
| 173 |
| 174 static void update_buflen(const BIGNUM *b, size_t *pbuflen) |
| 175 { |
| 176 size_t i; |
| 177 if (!b) |
| 178 return; |
| 179 if (*pbuflen < (i = (size_t)BN_num_bytes(b))) |
| 180 *pbuflen = i; |
| 181 } |
| 182 |
| 183 static int do_rsa_print(BIO *bp, const RSA *x, int off, int priv) |
| 184 { |
| 185 char *str; |
| 186 const char *s; |
| 187 unsigned char *m=NULL; |
| 188 int ret=0, mod_len = 0; |
| 189 size_t buf_len=0; |
| 190 |
| 191 update_buflen(x->n, &buf_len); |
| 192 update_buflen(x->e, &buf_len); |
| 193 |
| 194 if (priv) |
| 195 { |
| 196 update_buflen(x->d, &buf_len); |
| 197 update_buflen(x->p, &buf_len); |
| 198 update_buflen(x->q, &buf_len); |
| 199 update_buflen(x->dmp1, &buf_len); |
| 200 update_buflen(x->dmq1, &buf_len); |
| 201 update_buflen(x->iqmp, &buf_len); |
| 202 } |
| 203 |
| 204 m=(unsigned char *)OPENSSL_malloc(buf_len+10); |
| 205 if (m == NULL) |
| 206 { |
| 207 RSAerr(RSA_F_DO_RSA_PRINT,ERR_R_MALLOC_FAILURE); |
| 208 goto err; |
| 209 } |
| 210 |
| 211 if (x->n != NULL) |
| 212 mod_len = BN_num_bits(x->n); |
| 213 |
| 214 if(!BIO_indent(bp,off,128)) |
| 215 goto err; |
| 216 |
| 217 if (priv && x->d) |
| 218 { |
| 219 if (BIO_printf(bp,"Private-Key: (%d bit)\n", mod_len) |
| 220 <= 0) goto err; |
| 221 str = "modulus:"; |
| 222 s = "publicExponent:"; |
| 223 } |
| 224 else |
| 225 { |
| 226 if (BIO_printf(bp,"Public-Key: (%d bit)\n", mod_len) |
| 227 <= 0) goto err; |
| 228 str = "Modulus:"; |
| 229 s= "Exponent:"; |
| 230 } |
| 231 if (!ASN1_bn_print(bp,str,x->n,m,off)) goto err; |
| 232 if (!ASN1_bn_print(bp,s,x->e,m,off)) |
| 233 goto err; |
| 234 if (priv) |
| 235 { |
| 236 if (!ASN1_bn_print(bp,"privateExponent:",x->d,m,off)) |
| 237 goto err; |
| 238 if (!ASN1_bn_print(bp,"prime1:",x->p,m,off)) |
| 239 goto err; |
| 240 if (!ASN1_bn_print(bp,"prime2:",x->q,m,off)) |
| 241 goto err; |
| 242 if (!ASN1_bn_print(bp,"exponent1:",x->dmp1,m,off)) |
| 243 goto err; |
| 244 if (!ASN1_bn_print(bp,"exponent2:",x->dmq1,m,off)) |
| 245 goto err; |
| 246 if (!ASN1_bn_print(bp,"coefficient:",x->iqmp,m,off)) |
| 247 goto err; |
| 248 } |
| 249 ret=1; |
| 250 err: |
| 251 if (m != NULL) OPENSSL_free(m); |
| 252 return(ret); |
| 253 } |
| 254 |
| 255 static int rsa_pub_print(BIO *bp, const EVP_PKEY *pkey, int indent, |
| 256 ASN1_PCTX *ctx) |
| 257 { |
| 258 return do_rsa_print(bp, pkey->pkey.rsa, indent, 0); |
| 259 } |
| 260 |
| 261 |
| 262 static int rsa_priv_print(BIO *bp, const EVP_PKEY *pkey, int indent, |
| 263 ASN1_PCTX *ctx) |
| 264 { |
| 265 return do_rsa_print(bp, pkey->pkey.rsa, indent, 1); |
| 266 } |
| 267 |
| 268 |
| 269 static int rsa_pkey_ctrl(EVP_PKEY *pkey, int op, long arg1, void *arg2) |
| 270 { |
| 271 X509_ALGOR *alg = NULL; |
| 272 switch (op) |
| 273 { |
| 274 |
| 275 case ASN1_PKEY_CTRL_PKCS7_SIGN: |
| 276 if (arg1 == 0) |
| 277 PKCS7_SIGNER_INFO_get0_algs(arg2, NULL, NULL, &alg); |
| 278 break; |
| 279 |
| 280 case ASN1_PKEY_CTRL_PKCS7_ENCRYPT: |
| 281 if (arg1 == 0) |
| 282 PKCS7_RECIP_INFO_get0_alg(arg2, &alg); |
| 283 break; |
| 284 #ifndef OPENSSL_NO_CMS |
| 285 case ASN1_PKEY_CTRL_CMS_SIGN: |
| 286 if (arg1 == 0) |
| 287 CMS_SignerInfo_get0_algs(arg2, NULL, NULL, NULL, &alg); |
| 288 break; |
| 289 |
| 290 case ASN1_PKEY_CTRL_CMS_ENVELOPE: |
| 291 if (arg1 == 0) |
| 292 CMS_RecipientInfo_ktri_get0_algs(arg2, NULL, NULL, &alg)
; |
| 293 break; |
| 294 #endif |
| 295 |
| 296 case ASN1_PKEY_CTRL_DEFAULT_MD_NID: |
| 297 *(int *)arg2 = NID_sha1; |
| 298 return 1; |
| 299 |
| 300 default: |
| 301 return -2; |
| 302 |
| 303 } |
| 304 |
| 305 if (alg) |
| 306 X509_ALGOR_set0(alg, OBJ_nid2obj(NID_rsaEncryption), |
| 307 V_ASN1_NULL, 0); |
| 308 |
| 309 return 1; |
| 310 |
| 311 } |
| 312 |
| 313 |
| 314 const EVP_PKEY_ASN1_METHOD rsa_asn1_meths[] = |
| 315 { |
| 316 { |
| 317 EVP_PKEY_RSA, |
| 318 EVP_PKEY_RSA, |
| 319 ASN1_PKEY_SIGPARAM_NULL, |
| 320 |
| 321 "RSA", |
| 322 "OpenSSL RSA method", |
| 323 |
| 324 rsa_pub_decode, |
| 325 rsa_pub_encode, |
| 326 rsa_pub_cmp, |
| 327 rsa_pub_print, |
| 328 |
| 329 rsa_priv_decode, |
| 330 rsa_priv_encode, |
| 331 rsa_priv_print, |
| 332 |
| 333 int_rsa_size, |
| 334 rsa_bits, |
| 335 |
| 336 0,0,0,0,0,0, |
| 337 |
| 338 int_rsa_free, |
| 339 rsa_pkey_ctrl, |
| 340 old_rsa_priv_decode, |
| 341 old_rsa_priv_encode |
| 342 }, |
| 343 |
| 344 { |
| 345 EVP_PKEY_RSA2, |
| 346 EVP_PKEY_RSA, |
| 347 ASN1_PKEY_ALIAS |
| 348 } |
| 349 }; |
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