diff options
Diffstat (limited to 'openssl/crypto/pkcs7/pk7_smime.c')
| -rw-r--r-- | openssl/crypto/pkcs7/pk7_smime.c | 587 |
1 files changed, 0 insertions, 587 deletions
diff --git a/openssl/crypto/pkcs7/pk7_smime.c b/openssl/crypto/pkcs7/pk7_smime.c deleted file mode 100644 index 86742d0d..00000000 --- a/openssl/crypto/pkcs7/pk7_smime.c +++ /dev/null @@ -1,587 +0,0 @@ -/* pk7_smime.c */ -/* Written by Dr Stephen N Henson (steve@openssl.org) for the OpenSSL - * project. - */ -/* ==================================================================== - * Copyright (c) 1999-2004 The OpenSSL Project. All rights reserved. - * - * Redistribution and use in source and binary forms, with or without - * modification, are permitted provided that the following conditions - * are met: - * - * 1. Redistributions of source code must retain the above copyright - * notice, this list of conditions and the following disclaimer. - * - * 2. Redistributions in binary form must reproduce the above copyright - * notice, this list of conditions and the following disclaimer in - * the documentation and/or other materials provided with the - * distribution. - * - * 3. All advertising materials mentioning features or use of this - * software must display the following acknowledgment: - * "This product includes software developed by the OpenSSL Project - * for use in the OpenSSL Toolkit. (http://www.OpenSSL.org/)" - * - * 4. The names "OpenSSL Toolkit" and "OpenSSL Project" must not be used to - * endorse or promote products derived from this software without - * prior written permission. For written permission, please contact - * licensing@OpenSSL.org. - * - * 5. Products derived from this software may not be called "OpenSSL" - * nor may "OpenSSL" appear in their names without prior written - * permission of the OpenSSL Project. - * - * 6. Redistributions of any form whatsoever must retain the following - * acknowledgment: - * "This product includes software developed by the OpenSSL Project - * for use in the OpenSSL Toolkit (http://www.OpenSSL.org/)" - * - * THIS SOFTWARE IS PROVIDED BY THE OpenSSL PROJECT ``AS IS'' AND ANY - * EXPRESSED OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE - * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR - * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE OpenSSL PROJECT OR - * ITS CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, - * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT - * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; - * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) - * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, - * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) - * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED - * OF THE POSSIBILITY OF SUCH DAMAGE. - * ==================================================================== - * - * This product includes cryptographic software written by Eric Young - * (eay@cryptsoft.com). This product includes software written by Tim - * Hudson (tjh@cryptsoft.com). - * - */ - -/* Simple PKCS#7 processing functions */ - -#include <stdio.h> -#include "cryptlib.h" -#include <openssl/x509.h> -#include <openssl/x509v3.h> - -static int pkcs7_copy_existing_digest(PKCS7 *p7, PKCS7_SIGNER_INFO *si); - -PKCS7 *PKCS7_sign(X509 *signcert, EVP_PKEY *pkey, STACK_OF(X509) *certs, - BIO *data, int flags) -{ - PKCS7 *p7; - int i; - - if(!(p7 = PKCS7_new())) - { - PKCS7err(PKCS7_F_PKCS7_SIGN,ERR_R_MALLOC_FAILURE); - return NULL; - } - - if (!PKCS7_set_type(p7, NID_pkcs7_signed)) - goto err; - - if (!PKCS7_content_new(p7, NID_pkcs7_data)) - goto err; - - if (pkey && !PKCS7_sign_add_signer(p7, signcert, pkey, NULL, flags)) - { - PKCS7err(PKCS7_F_PKCS7_SIGN,PKCS7_R_PKCS7_ADD_SIGNER_ERROR); - goto err; - } - - if(!(flags & PKCS7_NOCERTS)) - { - for(i = 0; i < sk_X509_num(certs); i++) - { - if (!PKCS7_add_certificate(p7, sk_X509_value(certs, i))) - goto err; - } - } - - if(flags & PKCS7_DETACHED) - PKCS7_set_detached(p7, 1); - - if (flags & (PKCS7_STREAM|PKCS7_PARTIAL)) - return p7; - - if (PKCS7_final(p7, data, flags)) - return p7; - - err: - PKCS7_free(p7); - return NULL; -} - -int PKCS7_final(PKCS7 *p7, BIO *data, int flags) - { - BIO *p7bio; - int ret = 0; - if (!(p7bio = PKCS7_dataInit(p7, NULL))) - { - PKCS7err(PKCS7_F_PKCS7_FINAL,ERR_R_MALLOC_FAILURE); - return 0; - } - - SMIME_crlf_copy(data, p7bio, flags); - - (void)BIO_flush(p7bio); - - - if (!PKCS7_dataFinal(p7,p7bio)) - { - PKCS7err(PKCS7_F_PKCS7_FINAL,PKCS7_R_PKCS7_DATASIGN); - goto err; - } - - ret = 1; - - err: - BIO_free_all(p7bio); - - return ret; - - } - -/* Check to see if a cipher exists and if so add S/MIME capabilities */ - -static int add_cipher_smcap(STACK_OF(X509_ALGOR) *sk, int nid, int arg) - { - if (EVP_get_cipherbynid(nid)) - return PKCS7_simple_smimecap(sk, nid, arg); - return 1; - } - -static int add_digest_smcap(STACK_OF(X509_ALGOR) *sk, int nid, int arg) - { - if (EVP_get_digestbynid(nid)) - return PKCS7_simple_smimecap(sk, nid, arg); - return 1; - } - -PKCS7_SIGNER_INFO *PKCS7_sign_add_signer(PKCS7 *p7, X509 *signcert, - EVP_PKEY *pkey, const EVP_MD *md, - int flags) - { - PKCS7_SIGNER_INFO *si = NULL; - STACK_OF(X509_ALGOR) *smcap = NULL; - if(!X509_check_private_key(signcert, pkey)) - { - PKCS7err(PKCS7_F_PKCS7_SIGN_ADD_SIGNER, - PKCS7_R_PRIVATE_KEY_DOES_NOT_MATCH_CERTIFICATE); - return NULL; - } - - if (!(si = PKCS7_add_signature(p7,signcert,pkey, md))) - { - PKCS7err(PKCS7_F_PKCS7_SIGN_ADD_SIGNER, - PKCS7_R_PKCS7_ADD_SIGNATURE_ERROR); - return NULL; - } - - if(!(flags & PKCS7_NOCERTS)) - { - if (!PKCS7_add_certificate(p7, signcert)) - goto err; - } - - if(!(flags & PKCS7_NOATTR)) - { - if (!PKCS7_add_attrib_content_type(si, NULL)) - goto err; - /* Add SMIMECapabilities */ - if(!(flags & PKCS7_NOSMIMECAP)) - { - if(!(smcap = sk_X509_ALGOR_new_null())) - { - PKCS7err(PKCS7_F_PKCS7_SIGN_ADD_SIGNER, - ERR_R_MALLOC_FAILURE); - goto err; - } - if (!add_cipher_smcap(smcap, NID_aes_256_cbc, -1) - || !add_digest_smcap(smcap, NID_id_GostR3411_94, -1) - || !add_cipher_smcap(smcap, NID_id_Gost28147_89, -1) - || !add_cipher_smcap(smcap, NID_aes_192_cbc, -1) - || !add_cipher_smcap(smcap, NID_aes_128_cbc, -1) - || !add_cipher_smcap(smcap, NID_des_ede3_cbc, -1) - || !add_cipher_smcap(smcap, NID_rc2_cbc, 128) - || !add_cipher_smcap(smcap, NID_rc2_cbc, 64) - || !add_cipher_smcap(smcap, NID_des_cbc, -1) - || !add_cipher_smcap(smcap, NID_rc2_cbc, 40) - || !PKCS7_add_attrib_smimecap (si, smcap)) - goto err; - sk_X509_ALGOR_pop_free(smcap, X509_ALGOR_free); - smcap = NULL; - } - if (flags & PKCS7_REUSE_DIGEST) - { - if (!pkcs7_copy_existing_digest(p7, si)) - goto err; - if (!(flags & PKCS7_PARTIAL) && - !PKCS7_SIGNER_INFO_sign(si)) - goto err; - } - } - return si; - err: - if (smcap) - sk_X509_ALGOR_pop_free(smcap, X509_ALGOR_free); - return NULL; - } - -/* Search for a digest matching SignerInfo digest type and if found - * copy across. - */ - -static int pkcs7_copy_existing_digest(PKCS7 *p7, PKCS7_SIGNER_INFO *si) - { - int i; - STACK_OF(PKCS7_SIGNER_INFO) *sinfos; - PKCS7_SIGNER_INFO *sitmp; - ASN1_OCTET_STRING *osdig = NULL; - sinfos = PKCS7_get_signer_info(p7); - for (i = 0; i < sk_PKCS7_SIGNER_INFO_num(sinfos); i++) - { - sitmp = sk_PKCS7_SIGNER_INFO_value(sinfos, i); - if (si == sitmp) - break; - if (sk_X509_ATTRIBUTE_num(sitmp->auth_attr) <= 0) - continue; - if (!OBJ_cmp(si->digest_alg->algorithm, - sitmp->digest_alg->algorithm)) - { - osdig = PKCS7_digest_from_attributes(sitmp->auth_attr); - break; - } - - } - - if (osdig) - return PKCS7_add1_attrib_digest(si, osdig->data, osdig->length); - - PKCS7err(PKCS7_F_PKCS7_COPY_EXISTING_DIGEST, - PKCS7_R_NO_MATCHING_DIGEST_TYPE_FOUND); - return 0; - } - -int PKCS7_verify(PKCS7 *p7, STACK_OF(X509) *certs, X509_STORE *store, - BIO *indata, BIO *out, int flags) -{ - STACK_OF(X509) *signers; - X509 *signer; - STACK_OF(PKCS7_SIGNER_INFO) *sinfos; - PKCS7_SIGNER_INFO *si; - X509_STORE_CTX cert_ctx; - char buf[4096]; - int i, j=0, k, ret = 0; - BIO *p7bio; - BIO *tmpin, *tmpout; - - if(!p7) { - PKCS7err(PKCS7_F_PKCS7_VERIFY,PKCS7_R_INVALID_NULL_POINTER); - return 0; - } - - if(!PKCS7_type_is_signed(p7)) { - PKCS7err(PKCS7_F_PKCS7_VERIFY,PKCS7_R_WRONG_CONTENT_TYPE); - return 0; - } - - /* Check for no data and no content: no data to verify signature */ - if(PKCS7_get_detached(p7) && !indata) { - PKCS7err(PKCS7_F_PKCS7_VERIFY,PKCS7_R_NO_CONTENT); - return 0; - } -#if 0 - /* NB: this test commented out because some versions of Netscape - * illegally include zero length content when signing data. - */ - - /* Check for data and content: two sets of data */ - if(!PKCS7_get_detached(p7) && indata) { - PKCS7err(PKCS7_F_PKCS7_VERIFY,PKCS7_R_CONTENT_AND_DATA_PRESENT); - return 0; - } -#endif - - sinfos = PKCS7_get_signer_info(p7); - - if(!sinfos || !sk_PKCS7_SIGNER_INFO_num(sinfos)) { - PKCS7err(PKCS7_F_PKCS7_VERIFY,PKCS7_R_NO_SIGNATURES_ON_DATA); - return 0; - } - - - signers = PKCS7_get0_signers(p7, certs, flags); - - if(!signers) return 0; - - /* Now verify the certificates */ - - if (!(flags & PKCS7_NOVERIFY)) for (k = 0; k < sk_X509_num(signers); k++) { - signer = sk_X509_value (signers, k); - if (!(flags & PKCS7_NOCHAIN)) { - if(!X509_STORE_CTX_init(&cert_ctx, store, signer, - p7->d.sign->cert)) - { - PKCS7err(PKCS7_F_PKCS7_VERIFY,ERR_R_X509_LIB); - sk_X509_free(signers); - return 0; - } - X509_STORE_CTX_set_default(&cert_ctx, "smime_sign"); - } else if(!X509_STORE_CTX_init (&cert_ctx, store, signer, NULL)) { - PKCS7err(PKCS7_F_PKCS7_VERIFY,ERR_R_X509_LIB); - sk_X509_free(signers); - return 0; - } - if (!(flags & PKCS7_NOCRL)) - X509_STORE_CTX_set0_crls(&cert_ctx, p7->d.sign->crl); - i = X509_verify_cert(&cert_ctx); - if (i <= 0) j = X509_STORE_CTX_get_error(&cert_ctx); - X509_STORE_CTX_cleanup(&cert_ctx); - if (i <= 0) { - PKCS7err(PKCS7_F_PKCS7_VERIFY,PKCS7_R_CERTIFICATE_VERIFY_ERROR); - ERR_add_error_data(2, "Verify error:", - X509_verify_cert_error_string(j)); - sk_X509_free(signers); - return 0; - } - /* Check for revocation status here */ - } - - /* Performance optimization: if the content is a memory BIO then - * store its contents in a temporary read only memory BIO. This - * avoids potentially large numbers of slow copies of data which will - * occur when reading from a read write memory BIO when signatures - * are calculated. - */ - - if (indata && (BIO_method_type(indata) == BIO_TYPE_MEM)) - { - char *ptr; - long len; - len = BIO_get_mem_data(indata, &ptr); - tmpin = BIO_new_mem_buf(ptr, len); - if (tmpin == NULL) - { - PKCS7err(PKCS7_F_PKCS7_VERIFY,ERR_R_MALLOC_FAILURE); - return 0; - } - } - else - tmpin = indata; - - - if (!(p7bio=PKCS7_dataInit(p7,tmpin))) - goto err; - - if(flags & PKCS7_TEXT) { - if(!(tmpout = BIO_new(BIO_s_mem()))) { - PKCS7err(PKCS7_F_PKCS7_VERIFY,ERR_R_MALLOC_FAILURE); - goto err; - } - BIO_set_mem_eof_return(tmpout, 0); - } else tmpout = out; - - /* We now have to 'read' from p7bio to calculate digests etc. */ - for (;;) - { - i=BIO_read(p7bio,buf,sizeof(buf)); - if (i <= 0) break; - if (tmpout) BIO_write(tmpout, buf, i); - } - - if(flags & PKCS7_TEXT) { - if(!SMIME_text(tmpout, out)) { - PKCS7err(PKCS7_F_PKCS7_VERIFY,PKCS7_R_SMIME_TEXT_ERROR); - BIO_free(tmpout); - goto err; - } - BIO_free(tmpout); - } - - /* Now Verify All Signatures */ - if (!(flags & PKCS7_NOSIGS)) - for (i=0; i<sk_PKCS7_SIGNER_INFO_num(sinfos); i++) - { - si=sk_PKCS7_SIGNER_INFO_value(sinfos,i); - signer = sk_X509_value (signers, i); - j=PKCS7_signatureVerify(p7bio,p7,si, signer); - if (j <= 0) { - PKCS7err(PKCS7_F_PKCS7_VERIFY,PKCS7_R_SIGNATURE_FAILURE); - goto err; - } - } - - ret = 1; - - err: - - if (tmpin == indata) - { - if (indata) BIO_pop(p7bio); - } - BIO_free_all(p7bio); - - sk_X509_free(signers); - - return ret; -} - -STACK_OF(X509) *PKCS7_get0_signers(PKCS7 *p7, STACK_OF(X509) *certs, int flags) -{ - STACK_OF(X509) *signers; - STACK_OF(PKCS7_SIGNER_INFO) *sinfos; - PKCS7_SIGNER_INFO *si; - PKCS7_ISSUER_AND_SERIAL *ias; - X509 *signer; - int i; - - if(!p7) { - PKCS7err(PKCS7_F_PKCS7_GET0_SIGNERS,PKCS7_R_INVALID_NULL_POINTER); - return NULL; - } - - if(!PKCS7_type_is_signed(p7)) { - PKCS7err(PKCS7_F_PKCS7_GET0_SIGNERS,PKCS7_R_WRONG_CONTENT_TYPE); - return NULL; - } - - /* Collect all the signers together */ - - sinfos = PKCS7_get_signer_info(p7); - - if(sk_PKCS7_SIGNER_INFO_num(sinfos) <= 0) { - PKCS7err(PKCS7_F_PKCS7_GET0_SIGNERS,PKCS7_R_NO_SIGNERS); - return 0; - } - - if(!(signers = sk_X509_new_null())) { - PKCS7err(PKCS7_F_PKCS7_GET0_SIGNERS,ERR_R_MALLOC_FAILURE); - return NULL; - } - - for (i = 0; i < sk_PKCS7_SIGNER_INFO_num(sinfos); i++) - { - si = sk_PKCS7_SIGNER_INFO_value(sinfos, i); - ias = si->issuer_and_serial; - signer = NULL; - /* If any certificates passed they take priority */ - if (certs) signer = X509_find_by_issuer_and_serial (certs, - ias->issuer, ias->serial); - if (!signer && !(flags & PKCS7_NOINTERN) - && p7->d.sign->cert) signer = - X509_find_by_issuer_and_serial (p7->d.sign->cert, - ias->issuer, ias->serial); - if (!signer) { - PKCS7err(PKCS7_F_PKCS7_GET0_SIGNERS,PKCS7_R_SIGNER_CERTIFICATE_NOT_FOUND); - sk_X509_free(signers); - return 0; - } - - if (!sk_X509_push(signers, signer)) { - sk_X509_free(signers); - return NULL; - } - } - return signers; -} - - -/* Build a complete PKCS#7 enveloped data */ - -PKCS7 *PKCS7_encrypt(STACK_OF(X509) *certs, BIO *in, const EVP_CIPHER *cipher, - int flags) -{ - PKCS7 *p7; - BIO *p7bio = NULL; - int i; - X509 *x509; - if(!(p7 = PKCS7_new())) { - PKCS7err(PKCS7_F_PKCS7_ENCRYPT,ERR_R_MALLOC_FAILURE); - return NULL; - } - - if (!PKCS7_set_type(p7, NID_pkcs7_enveloped)) - goto err; - if (!PKCS7_set_cipher(p7, cipher)) { - PKCS7err(PKCS7_F_PKCS7_ENCRYPT,PKCS7_R_ERROR_SETTING_CIPHER); - goto err; - } - - for(i = 0; i < sk_X509_num(certs); i++) { - x509 = sk_X509_value(certs, i); - if(!PKCS7_add_recipient(p7, x509)) { - PKCS7err(PKCS7_F_PKCS7_ENCRYPT, - PKCS7_R_ERROR_ADDING_RECIPIENT); - goto err; - } - } - - if (flags & PKCS7_STREAM) - return p7; - - if (PKCS7_final(p7, in, flags)) - return p7; - - err: - - BIO_free_all(p7bio); - PKCS7_free(p7); - return NULL; - -} - -int PKCS7_decrypt(PKCS7 *p7, EVP_PKEY *pkey, X509 *cert, BIO *data, int flags) -{ - BIO *tmpmem; - int ret, i; - char buf[4096]; - - if(!p7) { - PKCS7err(PKCS7_F_PKCS7_DECRYPT,PKCS7_R_INVALID_NULL_POINTER); - return 0; - } - - if(!PKCS7_type_is_enveloped(p7)) { - PKCS7err(PKCS7_F_PKCS7_DECRYPT,PKCS7_R_WRONG_CONTENT_TYPE); - return 0; - } - - if(cert && !X509_check_private_key(cert, pkey)) { - PKCS7err(PKCS7_F_PKCS7_DECRYPT, - PKCS7_R_PRIVATE_KEY_DOES_NOT_MATCH_CERTIFICATE); - return 0; - } - - if(!(tmpmem = PKCS7_dataDecode(p7, pkey, NULL, cert))) { - PKCS7err(PKCS7_F_PKCS7_DECRYPT, PKCS7_R_DECRYPT_ERROR); - return 0; - } - - if (flags & PKCS7_TEXT) { - BIO *tmpbuf, *bread; - /* Encrypt BIOs can't do BIO_gets() so add a buffer BIO */ - if(!(tmpbuf = BIO_new(BIO_f_buffer()))) { - PKCS7err(PKCS7_F_PKCS7_DECRYPT, ERR_R_MALLOC_FAILURE); - BIO_free_all(tmpmem); - return 0; - } - if(!(bread = BIO_push(tmpbuf, tmpmem))) { - PKCS7err(PKCS7_F_PKCS7_DECRYPT, ERR_R_MALLOC_FAILURE); - BIO_free_all(tmpbuf); - BIO_free_all(tmpmem); - return 0; - } - ret = SMIME_text(bread, data); - BIO_free_all(bread); - return ret; - } else { - for(;;) { - i = BIO_read(tmpmem, buf, sizeof(buf)); - if(i <= 0) break; - BIO_write(data, buf, i); - } - BIO_free_all(tmpmem); - return 1; - } -} |