--- /dev/null
+/* 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 != 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,ERR_R_MALLOC_FAILURE);
+ 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
projects / cassiopeia.git / blobdiff