/* pk7_smime.c */
-/* Written by Dr Stephen N Henson (shenson@bigfoot.com) for the OpenSSL
- * project 1999.
+/*
+ * Written by Dr Stephen N Henson (steve@openssl.org) for the OpenSSL
+ * project.
*/
/* ====================================================================
- * Copyright (c) 1999 The OpenSSL Project. All rights reserved.
+ * 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.
+ * 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
/* Simple PKCS#7 processing functions */
#include <stdio.h>
-#include "cryptlib.h"
+#include "internal/cryptlib.h"
#include <openssl/x509.h>
#include <openssl/x509v3.h>
+
+#define BUFFERSIZE 4096
+
+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)
+ BIO *data, int flags)
{
- PKCS7 *p7;
- PKCS7_SIGNER_INFO *si;
- BIO *p7bio;
- STACK_OF(X509_ALGOR) *smcap;
- int i;
-
- if(!X509_check_private_key(signcert, pkey)) {
- PKCS7err(PKCS7_F_PKCS7_SIGN,PKCS7_R_PRIVATE_KEY_DOES_NOT_MATCH_CERTIFICATE);
- return NULL;
- }
-
- if(!(p7 = PKCS7_new())) {
- PKCS7err(PKCS7_F_PKCS7_SIGN,ERR_R_MALLOC_FAILURE);
- return NULL;
- }
-
- PKCS7_set_type(p7, NID_pkcs7_signed);
-
- PKCS7_content_new(p7, NID_pkcs7_data);
-
- if (!(si = PKCS7_add_signature(p7,signcert,pkey,EVP_sha1()))) {
- PKCS7err(PKCS7_F_PKCS7_SIGN,PKCS7_R_PKCS7_ADD_SIGNATURE_ERROR);
- return NULL;
- }
-
- if(!(flags & PKCS7_NOCERTS)) {
- PKCS7_add_certificate(p7, signcert);
- if(certs) for(i = 0; i < sk_X509_num(certs); i++)
- PKCS7_add_certificate(p7, sk_X509_value(certs, i));
- }
-
- if(!(p7bio = PKCS7_dataInit(p7, NULL))) {
- PKCS7err(PKCS7_F_PKCS7_SIGN,ERR_R_MALLOC_FAILURE);
- return NULL;
- }
-
-
- SMIME_crlf_copy(data, p7bio, flags);
-
- if(!(flags & PKCS7_NOATTR)) {
- PKCS7_add_signed_attribute(si, NID_pkcs9_contentType,
- V_ASN1_OBJECT, OBJ_nid2obj(NID_pkcs7_data));
- /* Add SMIMECapabilities */
- if(!(flags & PKCS7_NOSMIMECAP))
- {
- if(!(smcap = sk_X509_ALGOR_new_null())) {
- PKCS7err(PKCS7_F_PKCS7_SIGN,ERR_R_MALLOC_FAILURE);
- return NULL;
- }
-#ifndef OPENSSL_NO_DES
- PKCS7_simple_smimecap (smcap, NID_des_ede3_cbc, -1);
-#endif
-#ifndef OPENSSL_NO_RC2
- PKCS7_simple_smimecap (smcap, NID_rc2_cbc, 128);
- PKCS7_simple_smimecap (smcap, NID_rc2_cbc, 64);
-#endif
-#ifndef OPENSSL_NO_DES
- PKCS7_simple_smimecap (smcap, NID_des_cbc, -1);
-#endif
-#ifndef OPENSSL_NO_RC2
- PKCS7_simple_smimecap (smcap, NID_rc2_cbc, 40);
-#endif
- PKCS7_add_attrib_smimecap (si, smcap);
- sk_X509_ALGOR_pop_free(smcap, X509_ALGOR_free);
- }
- }
-
- if(flags & PKCS7_DETACHED)PKCS7_set_detached(p7, 1);
-
- if (!PKCS7_dataFinal(p7,p7bio)) {
- PKCS7err(PKCS7_F_PKCS7_SIGN,PKCS7_R_PKCS7_DATASIGN);
- return NULL;
- }
-
- BIO_free_all(p7bio);
- return p7;
+ PKCS7 *p7;
+ int i;
+
+ if ((p7 = PKCS7_new()) == NULL) {
+ 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_verify(PKCS7 *p7, STACK_OF(X509) *certs, X509_STORE *store,
- BIO *indata, BIO *out, int flags)
+int PKCS7_final(PKCS7 *p7, BIO *data, 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;
- BIO *p7bio;
- BIO *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)) {
- X509_STORE_CTX_init(&cert_ctx, store, signer,
- p7->d.sign->cert);
- X509_STORE_CTX_set_purpose(&cert_ctx,
- X509_PURPOSE_SMIME_SIGN);
- } else X509_STORE_CTX_init (&cert_ctx, store, signer, NULL);
- 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 */
- }
-
- p7bio=PKCS7_dataInit(p7,indata);
-
- if(flags & PKCS7_TEXT) {
- if(!(tmpout = BIO_new(BIO_s_mem()))) {
- PKCS7err(PKCS7_F_PKCS7_VERIFY,ERR_R_MALLOC_FAILURE);
- goto err;
- }
- } 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;
- }
- }
-
- sk_X509_free(signers);
- if(indata) BIO_pop(p7bio);
- BIO_free_all(p7bio);
-
- return 1;
-
- err:
-
- sk_X509_free(signers);
- BIO_free(p7bio);
-
- return 0;
+ BIO *p7bio;
+ int ret = 0;
+
+ if ((p7bio = PKCS7_dataInit(p7, NULL)) == 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;
}
-STACK_OF(X509) *PKCS7_get0_signers(PKCS7 *p7, STACK_OF(X509) *certs, int flags)
+static int add_digest_smcap(STACK_OF(X509_ALGOR) *sk, int nid, int arg)
{
- 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;
- }
- if(!(signers = sk_X509_new_null())) {
- PKCS7err(PKCS7_F_PKCS7_GET0_SIGNERS,ERR_R_MALLOC_FAILURE);
- 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;
- }
-
- 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;
- }
-
- sk_X509_push(signers, signer);
- }
- return signers;
+ 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)) == NULL) {
+ 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()) == 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:
+ 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 = NULL;
+ int i, j = 0, k, ret = 0;
+ BIO *p7bio = NULL;
+ BIO *tmpin = NULL, *tmpout = NULL;
+
+ 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;
+ }
+
+ /* 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;
+ }
+
+ 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);
+ goto err;
+ }
+ 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);
+ goto err;
+ }
+ 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));
+ goto err;
+ }
+ /* 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);
+ goto err;
+ }
+ } else
+ tmpin = indata;
+
+ if ((p7bio = PKCS7_dataInit(p7, tmpin)) == NULL)
+ goto err;
+
+ if (flags & PKCS7_TEXT) {
+ if ((tmpout = BIO_new(BIO_s_mem())) == NULL) {
+ 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. */
+ if ((buf = OPENSSL_malloc(BUFFERSIZE)) == NULL) {
+ PKCS7err(PKCS7_F_PKCS7_VERIFY, ERR_R_MALLOC_FAILURE);
+ goto err;
+ }
+ for (;;) {
+ i = BIO_read(p7bio, buf, BUFFERSIZE);
+ 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:
+ OPENSSL_free(buf);
+ 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()) == 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, EVP_CIPHER *cipher,
- int flags)
+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;
- }
-
- PKCS7_set_type(p7, NID_pkcs7_enveloped);
- 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(!(p7bio = PKCS7_dataInit(p7, NULL))) {
- PKCS7err(PKCS7_F_PKCS7_ENCRYPT,ERR_R_MALLOC_FAILURE);
- goto err;
- }
-
- SMIME_crlf_copy(in, p7bio, flags);
-
- BIO_flush(p7bio);
-
- if (!PKCS7_dataFinal(p7,p7bio)) {
- PKCS7err(PKCS7_F_PKCS7_ENCRYPT,PKCS7_R_PKCS7_DATAFINAL_ERROR);
- goto err;
- }
- BIO_free_all(p7bio);
-
- return p7;
-
- err:
-
- BIO_free(p7bio);
- PKCS7_free(p7);
- return NULL;
+ PKCS7 *p7;
+ BIO *p7bio = NULL;
+ int i;
+ X509 *x509;
+ if ((p7 = PKCS7_new()) == NULL) {
+ 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(!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);
- return 0;
- }
- if(!(bread = BIO_push(tmpbuf, tmpmem))) {
- PKCS7err(PKCS7_F_PKCS7_DECRYPT, ERR_R_MALLOC_FAILURE);
- 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;
- }
+ BIO *tmpmem;
+ int ret, i;
+ char *buf = NULL;
+
+ 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)) == NULL) {
+ 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())) == NULL) {
+ PKCS7err(PKCS7_F_PKCS7_DECRYPT, ERR_R_MALLOC_FAILURE);
+ BIO_free_all(tmpmem);
+ return 0;
+ }
+ if ((bread = BIO_push(tmpbuf, tmpmem)) == NULL) {
+ PKCS7err(PKCS7_F_PKCS7_DECRYPT, ERR_R_MALLOC_FAILURE);
+ BIO_free_all(tmpbuf);
+ BIO_free_all(tmpmem);
+ return 0;
+ }
+ ret = SMIME_text(bread, data);
+ if (ret > 0 && BIO_method_type(tmpmem) == BIO_TYPE_CIPHER) {
+ if (!BIO_get_cipher_status(tmpmem))
+ ret = 0;
+ }
+ BIO_free_all(bread);
+ return ret;
+ }
+ if ((buf = OPENSSL_malloc(BUFFERSIZE)) == NULL) {
+ PKCS7err(PKCS7_F_PKCS7_DECRYPT, ERR_R_MALLOC_FAILURE);
+ goto err;
+ }
+ for (;;) {
+ i = BIO_read(tmpmem, buf, BUFFERSIZE);
+ if (i <= 0) {
+ ret = 1;
+ if (BIO_method_type(tmpmem) == BIO_TYPE_CIPHER) {
+ if (!BIO_get_cipher_status(tmpmem))
+ ret = 0;
+ }
+
+ break;
+ }
+ if (BIO_write(data, buf, i) != i) {
+ ret = 0;
+ break;
+ }
+ }
+err:
+ OPENSSL_free(buf);
+ BIO_free_all(tmpmem);
+ return ret;
}
projects / openssl.git / blobdiff