| /* crypto/cms/cms_smime.c */ |
| /* |
| * Written by Dr Stephen N Henson (steve@openssl.org) for the OpenSSL |
| * project. |
| */ |
| /* ==================================================================== |
| * Copyright (c) 2008 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. |
| * ==================================================================== |
| */ |
| |
| #include "cryptlib.h" |
| #include <openssl/asn1t.h> |
| #include <openssl/x509.h> |
| #include <openssl/x509v3.h> |
| #include <openssl/err.h> |
| #include <openssl/cms.h> |
| #include "cms_lcl.h" |
| |
| static int cms_copy_content(BIO *out, BIO *in, unsigned int flags) |
| { |
| unsigned char buf[4096]; |
| int r = 0, i; |
| BIO *tmpout = NULL; |
| |
| if (out == NULL) |
| tmpout = BIO_new(BIO_s_null()); |
| else if (flags & CMS_TEXT) { |
| tmpout = BIO_new(BIO_s_mem()); |
| BIO_set_mem_eof_return(tmpout, 0); |
| } else |
| tmpout = out; |
| |
| if (!tmpout) { |
| CMSerr(CMS_F_CMS_COPY_CONTENT, ERR_R_MALLOC_FAILURE); |
| goto err; |
| } |
| |
| /* Read all content through chain to process digest, decrypt etc */ |
| for (;;) { |
| i = BIO_read(in, buf, sizeof(buf)); |
| if (i <= 0) { |
| if (BIO_method_type(in) == BIO_TYPE_CIPHER) { |
| if (!BIO_get_cipher_status(in)) |
| goto err; |
| } |
| if (i < 0) |
| goto err; |
| break; |
| } |
| |
| if (tmpout && (BIO_write(tmpout, buf, i) != i)) |
| goto err; |
| } |
| |
| if (flags & CMS_TEXT) { |
| if (!SMIME_text(tmpout, out)) { |
| CMSerr(CMS_F_CMS_COPY_CONTENT, CMS_R_SMIME_TEXT_ERROR); |
| goto err; |
| } |
| } |
| |
| r = 1; |
| |
| err: |
| if (tmpout && (tmpout != out)) |
| BIO_free(tmpout); |
| return r; |
| |
| } |
| |
| static int check_content(CMS_ContentInfo *cms) |
| { |
| ASN1_OCTET_STRING **pos = CMS_get0_content(cms); |
| if (!pos || !*pos) { |
| CMSerr(CMS_F_CHECK_CONTENT, CMS_R_NO_CONTENT); |
| return 0; |
| } |
| return 1; |
| } |
| |
| static void do_free_upto(BIO *f, BIO *upto) |
| { |
| if (upto) { |
| BIO *tbio; |
| do { |
| tbio = BIO_pop(f); |
| BIO_free(f); |
| f = tbio; |
| } |
| while (f && f != upto); |
| } else |
| BIO_free_all(f); |
| } |
| |
| int CMS_data(CMS_ContentInfo *cms, BIO *out, unsigned int flags) |
| { |
| BIO *cont; |
| int r; |
| if (OBJ_obj2nid(CMS_get0_type(cms)) != NID_pkcs7_data) { |
| CMSerr(CMS_F_CMS_DATA, CMS_R_TYPE_NOT_DATA); |
| return 0; |
| } |
| cont = CMS_dataInit(cms, NULL); |
| if (!cont) |
| return 0; |
| r = cms_copy_content(out, cont, flags); |
| BIO_free_all(cont); |
| return r; |
| } |
| |
| CMS_ContentInfo *CMS_data_create(BIO *in, unsigned int flags) |
| { |
| CMS_ContentInfo *cms; |
| cms = cms_Data_create(); |
| if (!cms) |
| return NULL; |
| |
| if ((flags & CMS_STREAM) || CMS_final(cms, in, NULL, flags)) |
| return cms; |
| |
| CMS_ContentInfo_free(cms); |
| |
| return NULL; |
| } |
| |
| int CMS_digest_verify(CMS_ContentInfo *cms, BIO *dcont, BIO *out, |
| unsigned int flags) |
| { |
| BIO *cont; |
| int r; |
| if (OBJ_obj2nid(CMS_get0_type(cms)) != NID_pkcs7_digest) { |
| CMSerr(CMS_F_CMS_DIGEST_VERIFY, CMS_R_TYPE_NOT_DIGESTED_DATA); |
| return 0; |
| } |
| |
| if (!dcont && !check_content(cms)) |
| return 0; |
| |
| cont = CMS_dataInit(cms, dcont); |
| if (!cont) |
| return 0; |
| r = cms_copy_content(out, cont, flags); |
| if (r) |
| r = cms_DigestedData_do_final(cms, cont, 1); |
| do_free_upto(cont, dcont); |
| return r; |
| } |
| |
| CMS_ContentInfo *CMS_digest_create(BIO *in, const EVP_MD *md, |
| unsigned int flags) |
| { |
| CMS_ContentInfo *cms; |
| if (!md) |
| md = EVP_sha1(); |
| cms = cms_DigestedData_create(md); |
| if (!cms) |
| return NULL; |
| |
| if (!(flags & CMS_DETACHED)) |
| CMS_set_detached(cms, 0); |
| |
| if ((flags & CMS_STREAM) || CMS_final(cms, in, NULL, flags)) |
| return cms; |
| |
| CMS_ContentInfo_free(cms); |
| return NULL; |
| } |
| |
| int CMS_EncryptedData_decrypt(CMS_ContentInfo *cms, |
| const unsigned char *key, size_t keylen, |
| BIO *dcont, BIO *out, unsigned int flags) |
| { |
| BIO *cont; |
| int r; |
| if (OBJ_obj2nid(CMS_get0_type(cms)) != NID_pkcs7_encrypted) { |
| CMSerr(CMS_F_CMS_ENCRYPTEDDATA_DECRYPT, |
| CMS_R_TYPE_NOT_ENCRYPTED_DATA); |
| return 0; |
| } |
| |
| if (!dcont && !check_content(cms)) |
| return 0; |
| |
| if (CMS_EncryptedData_set1_key(cms, NULL, key, keylen) <= 0) |
| return 0; |
| cont = CMS_dataInit(cms, dcont); |
| if (!cont) |
| return 0; |
| r = cms_copy_content(out, cont, flags); |
| do_free_upto(cont, dcont); |
| return r; |
| } |
| |
| CMS_ContentInfo *CMS_EncryptedData_encrypt(BIO *in, const EVP_CIPHER *cipher, |
| const unsigned char *key, |
| size_t keylen, unsigned int flags) |
| { |
| CMS_ContentInfo *cms; |
| if (!cipher) { |
| CMSerr(CMS_F_CMS_ENCRYPTEDDATA_ENCRYPT, CMS_R_NO_CIPHER); |
| return NULL; |
| } |
| cms = CMS_ContentInfo_new(); |
| if (!cms) |
| return NULL; |
| if (!CMS_EncryptedData_set1_key(cms, cipher, key, keylen)) |
| return NULL; |
| |
| if (!(flags & CMS_DETACHED)) |
| CMS_set_detached(cms, 0); |
| |
| if ((flags & (CMS_STREAM | CMS_PARTIAL)) |
| || CMS_final(cms, in, NULL, flags)) |
| return cms; |
| |
| CMS_ContentInfo_free(cms); |
| return NULL; |
| } |
| |
| static int cms_signerinfo_verify_cert(CMS_SignerInfo *si, |
| X509_STORE *store, |
| STACK_OF(X509) *certs, |
| STACK_OF(X509_CRL) *crls, |
| unsigned int flags) |
| { |
| X509_STORE_CTX ctx; |
| X509 *signer; |
| int i, j, r = 0; |
| CMS_SignerInfo_get0_algs(si, NULL, &signer, NULL, NULL); |
| if (!X509_STORE_CTX_init(&ctx, store, signer, certs)) { |
| CMSerr(CMS_F_CMS_SIGNERINFO_VERIFY_CERT, CMS_R_STORE_INIT_ERROR); |
| goto err; |
| } |
| X509_STORE_CTX_set_default(&ctx, "smime_sign"); |
| if (crls) |
| X509_STORE_CTX_set0_crls(&ctx, crls); |
| |
| i = X509_verify_cert(&ctx); |
| if (i <= 0) { |
| j = X509_STORE_CTX_get_error(&ctx); |
| CMSerr(CMS_F_CMS_SIGNERINFO_VERIFY_CERT, |
| CMS_R_CERTIFICATE_VERIFY_ERROR); |
| ERR_add_error_data(2, "Verify error:", |
| X509_verify_cert_error_string(j)); |
| goto err; |
| } |
| r = 1; |
| err: |
| X509_STORE_CTX_cleanup(&ctx); |
| return r; |
| |
| } |
| |
| int CMS_verify(CMS_ContentInfo *cms, STACK_OF(X509) *certs, |
| X509_STORE *store, BIO *dcont, BIO *out, unsigned int flags) |
| { |
| CMS_SignerInfo *si; |
| STACK_OF(CMS_SignerInfo) *sinfos; |
| STACK_OF(X509) *cms_certs = NULL; |
| STACK_OF(X509_CRL) *crls = NULL; |
| X509 *signer; |
| int i, scount = 0, ret = 0; |
| BIO *cmsbio = NULL, *tmpin = NULL; |
| |
| if (!dcont && !check_content(cms)) |
| return 0; |
| |
| /* Attempt to find all signer certificates */ |
| |
| sinfos = CMS_get0_SignerInfos(cms); |
| |
| if (sk_CMS_SignerInfo_num(sinfos) <= 0) { |
| CMSerr(CMS_F_CMS_VERIFY, CMS_R_NO_SIGNERS); |
| goto err; |
| } |
| |
| for (i = 0; i < sk_CMS_SignerInfo_num(sinfos); i++) { |
| si = sk_CMS_SignerInfo_value(sinfos, i); |
| CMS_SignerInfo_get0_algs(si, NULL, &signer, NULL, NULL); |
| if (signer) |
| scount++; |
| } |
| |
| if (scount != sk_CMS_SignerInfo_num(sinfos)) |
| scount += CMS_set1_signers_certs(cms, certs, flags); |
| |
| if (scount != sk_CMS_SignerInfo_num(sinfos)) { |
| CMSerr(CMS_F_CMS_VERIFY, CMS_R_SIGNER_CERTIFICATE_NOT_FOUND); |
| goto err; |
| } |
| |
| /* Attempt to verify all signers certs */ |
| |
| if (!(flags & CMS_NO_SIGNER_CERT_VERIFY)) { |
| cms_certs = CMS_get1_certs(cms); |
| if (!(flags & CMS_NOCRL)) |
| crls = CMS_get1_crls(cms); |
| for (i = 0; i < sk_CMS_SignerInfo_num(sinfos); i++) { |
| si = sk_CMS_SignerInfo_value(sinfos, i); |
| if (!cms_signerinfo_verify_cert(si, store, |
| cms_certs, crls, flags)) |
| goto err; |
| } |
| } |
| |
| /* Attempt to verify all SignerInfo signed attribute signatures */ |
| |
| if (!(flags & CMS_NO_ATTR_VERIFY)) { |
| for (i = 0; i < sk_CMS_SignerInfo_num(sinfos); i++) { |
| si = sk_CMS_SignerInfo_value(sinfos, i); |
| if (CMS_signed_get_attr_count(si) < 0) |
| continue; |
| if (CMS_SignerInfo_verify(si) <= 0) |
| goto err; |
| } |
| } |
| |
| /* |
| * 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 (dcont && (BIO_method_type(dcont) == BIO_TYPE_MEM)) { |
| char *ptr; |
| long len; |
| len = BIO_get_mem_data(dcont, &ptr); |
| tmpin = BIO_new_mem_buf(ptr, len); |
| if (tmpin == NULL) { |
| CMSerr(CMS_F_CMS_VERIFY, ERR_R_MALLOC_FAILURE); |
| return 0; |
| } |
| } else |
| tmpin = dcont; |
| |
| cmsbio = CMS_dataInit(cms, tmpin); |
| if (!cmsbio) |
| goto err; |
| |
| if (!cms_copy_content(out, cmsbio, flags)) |
| goto err; |
| |
| if (!(flags & CMS_NO_CONTENT_VERIFY)) { |
| for (i = 0; i < sk_CMS_SignerInfo_num(sinfos); i++) { |
| si = sk_CMS_SignerInfo_value(sinfos, i); |
| if (CMS_SignerInfo_verify_content(si, cmsbio) <= 0) { |
| CMSerr(CMS_F_CMS_VERIFY, CMS_R_CONTENT_VERIFY_ERROR); |
| goto err; |
| } |
| } |
| } |
| |
| ret = 1; |
| |
| err: |
| |
| if (dcont && (tmpin == dcont)) |
| do_free_upto(cmsbio, dcont); |
| else |
| BIO_free_all(cmsbio); |
| |
| if (cms_certs) |
| sk_X509_pop_free(cms_certs, X509_free); |
| if (crls) |
| sk_X509_CRL_pop_free(crls, X509_CRL_free); |
| |
| return ret; |
| } |
| |
| int CMS_verify_receipt(CMS_ContentInfo *rcms, CMS_ContentInfo *ocms, |
| STACK_OF(X509) *certs, |
| X509_STORE *store, unsigned int flags) |
| { |
| int r; |
| flags &= ~(CMS_DETACHED | CMS_TEXT); |
| r = CMS_verify(rcms, certs, store, NULL, NULL, flags); |
| if (r <= 0) |
| return r; |
| return cms_Receipt_verify(rcms, ocms); |
| } |
| |
| CMS_ContentInfo *CMS_sign(X509 *signcert, EVP_PKEY *pkey, |
| STACK_OF(X509) *certs, BIO *data, |
| unsigned int flags) |
| { |
| CMS_ContentInfo *cms; |
| int i; |
| |
| cms = CMS_ContentInfo_new(); |
| if (!cms || !CMS_SignedData_init(cms)) |
| goto merr; |
| |
| if (pkey && !CMS_add1_signer(cms, signcert, pkey, NULL, flags)) { |
| CMSerr(CMS_F_CMS_SIGN, CMS_R_ADD_SIGNER_ERROR); |
| goto err; |
| } |
| |
| for (i = 0; i < sk_X509_num(certs); i++) { |
| X509 *x = sk_X509_value(certs, i); |
| if (!CMS_add1_cert(cms, x)) |
| goto merr; |
| } |
| |
| if (!(flags & CMS_DETACHED)) |
| CMS_set_detached(cms, 0); |
| |
| if ((flags & (CMS_STREAM | CMS_PARTIAL)) |
| || CMS_final(cms, data, NULL, flags)) |
| return cms; |
| else |
| goto err; |
| |
| merr: |
| CMSerr(CMS_F_CMS_SIGN, ERR_R_MALLOC_FAILURE); |
| |
| err: |
| if (cms) |
| CMS_ContentInfo_free(cms); |
| return NULL; |
| } |
| |
| CMS_ContentInfo *CMS_sign_receipt(CMS_SignerInfo *si, |
| X509 *signcert, EVP_PKEY *pkey, |
| STACK_OF(X509) *certs, unsigned int flags) |
| { |
| CMS_SignerInfo *rct_si; |
| CMS_ContentInfo *cms = NULL; |
| ASN1_OCTET_STRING **pos, *os; |
| BIO *rct_cont = NULL; |
| int r = 0; |
| |
| flags &= ~(CMS_STREAM | CMS_TEXT); |
| /* Not really detached but avoids content being allocated */ |
| flags |= CMS_PARTIAL | CMS_BINARY | CMS_DETACHED; |
| if (!pkey || !signcert) { |
| CMSerr(CMS_F_CMS_SIGN_RECEIPT, CMS_R_NO_KEY_OR_CERT); |
| return NULL; |
| } |
| |
| /* Initialize signed data */ |
| |
| cms = CMS_sign(NULL, NULL, certs, NULL, flags); |
| if (!cms) |
| goto err; |
| |
| /* Set inner content type to signed receipt */ |
| if (!CMS_set1_eContentType(cms, OBJ_nid2obj(NID_id_smime_ct_receipt))) |
| goto err; |
| |
| rct_si = CMS_add1_signer(cms, signcert, pkey, NULL, flags); |
| if (!rct_si) { |
| CMSerr(CMS_F_CMS_SIGN_RECEIPT, CMS_R_ADD_SIGNER_ERROR); |
| goto err; |
| } |
| |
| os = cms_encode_Receipt(si); |
| |
| if (!os) |
| goto err; |
| |
| /* Set content to digest */ |
| rct_cont = BIO_new_mem_buf(os->data, os->length); |
| if (!rct_cont) |
| goto err; |
| |
| /* Add msgSigDigest attribute */ |
| |
| if (!cms_msgSigDigest_add1(rct_si, si)) |
| goto err; |
| |
| /* Finalize structure */ |
| if (!CMS_final(cms, rct_cont, NULL, flags)) |
| goto err; |
| |
| /* Set embedded content */ |
| pos = CMS_get0_content(cms); |
| *pos = os; |
| |
| r = 1; |
| |
| err: |
| if (rct_cont) |
| BIO_free(rct_cont); |
| if (r) |
| return cms; |
| CMS_ContentInfo_free(cms); |
| return NULL; |
| |
| } |
| |
| CMS_ContentInfo *CMS_encrypt(STACK_OF(X509) *certs, BIO *data, |
| const EVP_CIPHER *cipher, unsigned int flags) |
| { |
| CMS_ContentInfo *cms; |
| int i; |
| X509 *recip; |
| cms = CMS_EnvelopedData_create(cipher); |
| if (!cms) |
| goto merr; |
| for (i = 0; i < sk_X509_num(certs); i++) { |
| recip = sk_X509_value(certs, i); |
| if (!CMS_add1_recipient_cert(cms, recip, flags)) { |
| CMSerr(CMS_F_CMS_ENCRYPT, CMS_R_RECIPIENT_ERROR); |
| goto err; |
| } |
| } |
| |
| if (!(flags & CMS_DETACHED)) |
| CMS_set_detached(cms, 0); |
| |
| if ((flags & (CMS_STREAM | CMS_PARTIAL)) |
| || CMS_final(cms, data, NULL, flags)) |
| return cms; |
| else |
| goto err; |
| |
| merr: |
| CMSerr(CMS_F_CMS_ENCRYPT, ERR_R_MALLOC_FAILURE); |
| err: |
| if (cms) |
| CMS_ContentInfo_free(cms); |
| return NULL; |
| } |
| |
| int CMS_decrypt_set1_pkey(CMS_ContentInfo *cms, EVP_PKEY *pk, X509 *cert) |
| { |
| STACK_OF(CMS_RecipientInfo) *ris; |
| CMS_RecipientInfo *ri; |
| int i, r; |
| int debug = 0, ri_match = 0; |
| ris = CMS_get0_RecipientInfos(cms); |
| if (ris) |
| debug = cms->d.envelopedData->encryptedContentInfo->debug; |
| for (i = 0; i < sk_CMS_RecipientInfo_num(ris); i++) { |
| ri = sk_CMS_RecipientInfo_value(ris, i); |
| if (CMS_RecipientInfo_type(ri) != CMS_RECIPINFO_TRANS) |
| continue; |
| ri_match = 1; |
| /* |
| * If we have a cert try matching RecipientInfo otherwise try them |
| * all. |
| */ |
| if (!cert || (CMS_RecipientInfo_ktri_cert_cmp(ri, cert) == 0)) { |
| CMS_RecipientInfo_set0_pkey(ri, pk); |
| r = CMS_RecipientInfo_decrypt(cms, ri); |
| CMS_RecipientInfo_set0_pkey(ri, NULL); |
| if (cert) { |
| /* |
| * If not debugging clear any error and return success to |
| * avoid leaking of information useful to MMA |
| */ |
| if (!debug) { |
| ERR_clear_error(); |
| return 1; |
| } |
| if (r > 0) |
| return 1; |
| CMSerr(CMS_F_CMS_DECRYPT_SET1_PKEY, CMS_R_DECRYPT_ERROR); |
| return 0; |
| } |
| /* |
| * If no cert and not debugging don't leave loop after first |
| * successful decrypt. Always attempt to decrypt all recipients |
| * to avoid leaking timing of a successful decrypt. |
| */ |
| else if (r > 0 && debug) |
| return 1; |
| } |
| } |
| /* If no cert and not debugging always return success */ |
| if (ri_match && !cert && !debug) { |
| ERR_clear_error(); |
| return 1; |
| } |
| |
| CMSerr(CMS_F_CMS_DECRYPT_SET1_PKEY, CMS_R_NO_MATCHING_RECIPIENT); |
| return 0; |
| |
| } |
| |
| int CMS_decrypt_set1_key(CMS_ContentInfo *cms, |
| unsigned char *key, size_t keylen, |
| unsigned char *id, size_t idlen) |
| { |
| STACK_OF(CMS_RecipientInfo) *ris; |
| CMS_RecipientInfo *ri; |
| int i, r; |
| ris = CMS_get0_RecipientInfos(cms); |
| for (i = 0; i < sk_CMS_RecipientInfo_num(ris); i++) { |
| ri = sk_CMS_RecipientInfo_value(ris, i); |
| if (CMS_RecipientInfo_type(ri) != CMS_RECIPINFO_KEK) |
| continue; |
| |
| /* |
| * If we have an id try matching RecipientInfo otherwise try them |
| * all. |
| */ |
| if (!id || (CMS_RecipientInfo_kekri_id_cmp(ri, id, idlen) == 0)) { |
| CMS_RecipientInfo_set0_key(ri, key, keylen); |
| r = CMS_RecipientInfo_decrypt(cms, ri); |
| CMS_RecipientInfo_set0_key(ri, NULL, 0); |
| if (r > 0) |
| return 1; |
| if (id) { |
| CMSerr(CMS_F_CMS_DECRYPT_SET1_KEY, CMS_R_DECRYPT_ERROR); |
| return 0; |
| } |
| ERR_clear_error(); |
| } |
| } |
| |
| CMSerr(CMS_F_CMS_DECRYPT_SET1_KEY, CMS_R_NO_MATCHING_RECIPIENT); |
| return 0; |
| |
| } |
| |
| int CMS_decrypt_set1_password(CMS_ContentInfo *cms, |
| unsigned char *pass, ossl_ssize_t passlen) |
| { |
| STACK_OF(CMS_RecipientInfo) *ris; |
| CMS_RecipientInfo *ri; |
| int i, r; |
| ris = CMS_get0_RecipientInfos(cms); |
| for (i = 0; i < sk_CMS_RecipientInfo_num(ris); i++) { |
| ri = sk_CMS_RecipientInfo_value(ris, i); |
| if (CMS_RecipientInfo_type(ri) != CMS_RECIPINFO_PASS) |
| continue; |
| CMS_RecipientInfo_set0_password(ri, pass, passlen); |
| r = CMS_RecipientInfo_decrypt(cms, ri); |
| CMS_RecipientInfo_set0_password(ri, NULL, 0); |
| if (r > 0) |
| return 1; |
| } |
| |
| CMSerr(CMS_F_CMS_DECRYPT_SET1_PASSWORD, CMS_R_NO_MATCHING_RECIPIENT); |
| return 0; |
| |
| } |
| |
| int CMS_decrypt(CMS_ContentInfo *cms, EVP_PKEY *pk, X509 *cert, |
| BIO *dcont, BIO *out, unsigned int flags) |
| { |
| int r; |
| BIO *cont; |
| if (OBJ_obj2nid(CMS_get0_type(cms)) != NID_pkcs7_enveloped) { |
| CMSerr(CMS_F_CMS_DECRYPT, CMS_R_TYPE_NOT_ENVELOPED_DATA); |
| return 0; |
| } |
| if (!dcont && !check_content(cms)) |
| return 0; |
| if (flags & CMS_DEBUG_DECRYPT) |
| cms->d.envelopedData->encryptedContentInfo->debug = 1; |
| else |
| cms->d.envelopedData->encryptedContentInfo->debug = 0; |
| if (!pk && !cert && !dcont && !out) |
| return 1; |
| if (pk && !CMS_decrypt_set1_pkey(cms, pk, cert)) |
| return 0; |
| cont = CMS_dataInit(cms, dcont); |
| if (!cont) |
| return 0; |
| r = cms_copy_content(out, cont, flags); |
| do_free_upto(cont, dcont); |
| return r; |
| } |
| |
| int CMS_final(CMS_ContentInfo *cms, BIO *data, BIO *dcont, unsigned int flags) |
| { |
| BIO *cmsbio; |
| int ret = 0; |
| if (!(cmsbio = CMS_dataInit(cms, dcont))) { |
| CMSerr(CMS_F_CMS_FINAL, CMS_R_CMS_LIB); |
| return 0; |
| } |
| |
| SMIME_crlf_copy(data, cmsbio, flags); |
| |
| (void)BIO_flush(cmsbio); |
| |
| if (!CMS_dataFinal(cms, cmsbio)) { |
| CMSerr(CMS_F_CMS_FINAL, CMS_R_CMS_DATAFINAL_ERROR); |
| goto err; |
| } |
| |
| ret = 1; |
| |
| err: |
| do_free_upto(cmsbio, dcont); |
| |
| return ret; |
| |
| } |
| |
| #ifdef ZLIB |
| |
| int CMS_uncompress(CMS_ContentInfo *cms, BIO *dcont, BIO *out, |
| unsigned int flags) |
| { |
| BIO *cont; |
| int r; |
| if (OBJ_obj2nid(CMS_get0_type(cms)) != NID_id_smime_ct_compressedData) { |
| CMSerr(CMS_F_CMS_UNCOMPRESS, CMS_R_TYPE_NOT_COMPRESSED_DATA); |
| return 0; |
| } |
| |
| if (!dcont && !check_content(cms)) |
| return 0; |
| |
| cont = CMS_dataInit(cms, dcont); |
| if (!cont) |
| return 0; |
| r = cms_copy_content(out, cont, flags); |
| do_free_upto(cont, dcont); |
| return r; |
| } |
| |
| CMS_ContentInfo *CMS_compress(BIO *in, int comp_nid, unsigned int flags) |
| { |
| CMS_ContentInfo *cms; |
| if (comp_nid <= 0) |
| comp_nid = NID_zlib_compression; |
| cms = cms_CompressedData_create(comp_nid); |
| if (!cms) |
| return NULL; |
| |
| if (!(flags & CMS_DETACHED)) |
| CMS_set_detached(cms, 0); |
| |
| if ((flags & CMS_STREAM) || CMS_final(cms, in, NULL, flags)) |
| return cms; |
| |
| CMS_ContentInfo_free(cms); |
| return NULL; |
| } |
| |
| #else |
| |
| int CMS_uncompress(CMS_ContentInfo *cms, BIO *dcont, BIO *out, |
| unsigned int flags) |
| { |
| CMSerr(CMS_F_CMS_UNCOMPRESS, CMS_R_UNSUPPORTED_COMPRESSION_ALGORITHM); |
| return 0; |
| } |
| |
| CMS_ContentInfo *CMS_compress(BIO *in, int comp_nid, unsigned int flags) |
| { |
| CMSerr(CMS_F_CMS_COMPRESS, CMS_R_UNSUPPORTED_COMPRESSION_ALGORITHM); |
| return NULL; |
| } |
| |
| #endif |
