Kinson Chik | a8fa74c | 2011-07-29 11:33:41 -0700 | [diff] [blame] | 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 | |
Kinson Chik | 2cd211f | 2011-07-27 19:27:35 -0700 | [diff] [blame] | 183 | #ifndef LK_NO_BIO |
Kinson Chik | a8fa74c | 2011-07-29 11:33:41 -0700 | [diff] [blame] | 184 | static int do_rsa_print(BIO *bp, const RSA *x, int off, int priv) |
| 185 | { |
| 186 | char *str; |
| 187 | const char *s; |
| 188 | unsigned char *m=NULL; |
| 189 | int ret=0, mod_len = 0; |
| 190 | size_t buf_len=0; |
| 191 | |
| 192 | update_buflen(x->n, &buf_len); |
| 193 | update_buflen(x->e, &buf_len); |
| 194 | |
| 195 | if (priv) |
| 196 | { |
| 197 | update_buflen(x->d, &buf_len); |
| 198 | update_buflen(x->p, &buf_len); |
| 199 | update_buflen(x->q, &buf_len); |
| 200 | update_buflen(x->dmp1, &buf_len); |
| 201 | update_buflen(x->dmq1, &buf_len); |
| 202 | update_buflen(x->iqmp, &buf_len); |
| 203 | } |
| 204 | |
| 205 | m=(unsigned char *)OPENSSL_malloc(buf_len+10); |
| 206 | if (m == NULL) |
| 207 | { |
| 208 | RSAerr(RSA_F_DO_RSA_PRINT,ERR_R_MALLOC_FAILURE); |
| 209 | goto err; |
| 210 | } |
| 211 | |
| 212 | if (x->n != NULL) |
| 213 | mod_len = BN_num_bits(x->n); |
| 214 | |
| 215 | if(!BIO_indent(bp,off,128)) |
| 216 | goto err; |
| 217 | |
| 218 | if (priv && x->d) |
| 219 | { |
| 220 | if (BIO_printf(bp,"Private-Key: (%d bit)\n", mod_len) |
| 221 | <= 0) goto err; |
| 222 | str = "modulus:"; |
| 223 | s = "publicExponent:"; |
| 224 | } |
| 225 | else |
| 226 | { |
| 227 | if (BIO_printf(bp,"Public-Key: (%d bit)\n", mod_len) |
| 228 | <= 0) goto err; |
| 229 | str = "Modulus:"; |
| 230 | s= "Exponent:"; |
| 231 | } |
| 232 | if (!ASN1_bn_print(bp,str,x->n,m,off)) goto err; |
| 233 | if (!ASN1_bn_print(bp,s,x->e,m,off)) |
| 234 | goto err; |
| 235 | if (priv) |
| 236 | { |
| 237 | if (!ASN1_bn_print(bp,"privateExponent:",x->d,m,off)) |
| 238 | goto err; |
| 239 | if (!ASN1_bn_print(bp,"prime1:",x->p,m,off)) |
| 240 | goto err; |
| 241 | if (!ASN1_bn_print(bp,"prime2:",x->q,m,off)) |
| 242 | goto err; |
| 243 | if (!ASN1_bn_print(bp,"exponent1:",x->dmp1,m,off)) |
| 244 | goto err; |
| 245 | if (!ASN1_bn_print(bp,"exponent2:",x->dmq1,m,off)) |
| 246 | goto err; |
| 247 | if (!ASN1_bn_print(bp,"coefficient:",x->iqmp,m,off)) |
| 248 | goto err; |
| 249 | } |
| 250 | ret=1; |
| 251 | err: |
| 252 | if (m != NULL) OPENSSL_free(m); |
| 253 | return(ret); |
| 254 | } |
| 255 | |
| 256 | static int rsa_pub_print(BIO *bp, const EVP_PKEY *pkey, int indent, |
| 257 | ASN1_PCTX *ctx) |
| 258 | { |
| 259 | return do_rsa_print(bp, pkey->pkey.rsa, indent, 0); |
| 260 | } |
| 261 | |
| 262 | |
| 263 | static int rsa_priv_print(BIO *bp, const EVP_PKEY *pkey, int indent, |
| 264 | ASN1_PCTX *ctx) |
| 265 | { |
| 266 | return do_rsa_print(bp, pkey->pkey.rsa, indent, 1); |
| 267 | } |
| 268 | |
Kinson Chik | 2cd211f | 2011-07-27 19:27:35 -0700 | [diff] [blame] | 269 | #endif |
Kinson Chik | a8fa74c | 2011-07-29 11:33:41 -0700 | [diff] [blame] | 270 | |
| 271 | static int rsa_pkey_ctrl(EVP_PKEY *pkey, int op, long arg1, void *arg2) |
| 272 | { |
| 273 | X509_ALGOR *alg = NULL; |
| 274 | switch (op) |
| 275 | { |
| 276 | |
| 277 | case ASN1_PKEY_CTRL_PKCS7_SIGN: |
| 278 | if (arg1 == 0) |
| 279 | PKCS7_SIGNER_INFO_get0_algs(arg2, NULL, NULL, &alg); |
| 280 | break; |
| 281 | |
| 282 | case ASN1_PKEY_CTRL_PKCS7_ENCRYPT: |
| 283 | if (arg1 == 0) |
| 284 | PKCS7_RECIP_INFO_get0_alg(arg2, &alg); |
| 285 | break; |
| 286 | #ifndef OPENSSL_NO_CMS |
| 287 | case ASN1_PKEY_CTRL_CMS_SIGN: |
| 288 | if (arg1 == 0) |
| 289 | CMS_SignerInfo_get0_algs(arg2, NULL, NULL, NULL, &alg); |
| 290 | break; |
| 291 | |
| 292 | case ASN1_PKEY_CTRL_CMS_ENVELOPE: |
| 293 | if (arg1 == 0) |
| 294 | CMS_RecipientInfo_ktri_get0_algs(arg2, NULL, NULL, &alg); |
| 295 | break; |
| 296 | #endif |
| 297 | |
| 298 | case ASN1_PKEY_CTRL_DEFAULT_MD_NID: |
| 299 | *(int *)arg2 = NID_sha1; |
| 300 | return 1; |
| 301 | |
| 302 | default: |
| 303 | return -2; |
| 304 | |
| 305 | } |
| 306 | |
| 307 | if (alg) |
| 308 | X509_ALGOR_set0(alg, OBJ_nid2obj(NID_rsaEncryption), |
| 309 | V_ASN1_NULL, 0); |
| 310 | |
| 311 | return 1; |
| 312 | |
| 313 | } |
| 314 | |
| 315 | |
| 316 | const EVP_PKEY_ASN1_METHOD rsa_asn1_meths[] = |
| 317 | { |
| 318 | { |
| 319 | EVP_PKEY_RSA, |
| 320 | EVP_PKEY_RSA, |
| 321 | ASN1_PKEY_SIGPARAM_NULL, |
| 322 | |
| 323 | "RSA", |
| 324 | "OpenSSL RSA method", |
| 325 | |
| 326 | rsa_pub_decode, |
| 327 | rsa_pub_encode, |
| 328 | rsa_pub_cmp, |
Kinson Chik | 2cd211f | 2011-07-27 19:27:35 -0700 | [diff] [blame] | 329 | #ifndef LK_NO_BIO |
Kinson Chik | a8fa74c | 2011-07-29 11:33:41 -0700 | [diff] [blame] | 330 | rsa_pub_print, |
Kinson Chik | 2cd211f | 2011-07-27 19:27:35 -0700 | [diff] [blame] | 331 | #else |
| 332 | 0, |
| 333 | #endif |
Kinson Chik | a8fa74c | 2011-07-29 11:33:41 -0700 | [diff] [blame] | 334 | rsa_priv_decode, |
| 335 | rsa_priv_encode, |
Kinson Chik | 2cd211f | 2011-07-27 19:27:35 -0700 | [diff] [blame] | 336 | #ifndef LK_NO_BIO |
Kinson Chik | a8fa74c | 2011-07-29 11:33:41 -0700 | [diff] [blame] | 337 | rsa_priv_print, |
Kinson Chik | 2cd211f | 2011-07-27 19:27:35 -0700 | [diff] [blame] | 338 | #else |
| 339 | 0, |
| 340 | #endif |
Kinson Chik | a8fa74c | 2011-07-29 11:33:41 -0700 | [diff] [blame] | 341 | int_rsa_size, |
| 342 | rsa_bits, |
| 343 | |
| 344 | 0,0,0,0,0,0, |
| 345 | |
| 346 | int_rsa_free, |
| 347 | rsa_pkey_ctrl, |
| 348 | old_rsa_priv_decode, |
| 349 | old_rsa_priv_encode |
| 350 | }, |
| 351 | |
| 352 | { |
| 353 | EVP_PKEY_RSA2, |
| 354 | EVP_PKEY_RSA, |
| 355 | ASN1_PKEY_ALIAS |
| 356 | } |
| 357 | }; |