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/* $OpenBSD: cms.c,v 1.35 2023/11/21 17:56:19 tb Exp $ */
/* 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.
* ====================================================================
*/
/* CMS utility function */
#include <stdio.h>
#include <string.h>
#include "apps.h"
#ifndef OPENSSL_NO_CMS
#include <openssl/crypto.h>
#include <openssl/err.h>
#include <openssl/pem.h>
#include <openssl/x509_vfy.h>
#include <openssl/x509v3.h>
#include <openssl/cms.h>
static int save_certs(char *signerfile, STACK_OF(X509) *signers);
static void receipt_request_print(BIO *out, CMS_ContentInfo *cms);
static CMS_ReceiptRequest *make_receipt_request(
STACK_OF(OPENSSL_STRING) *rr_to, int rr_allorfirst,
STACK_OF(OPENSSL_STRING) *rr_from);
static int cms_set_pkey_param(EVP_PKEY_CTX *pctx,
STACK_OF(OPENSSL_STRING) *param);
#define SMIME_OP 0x10
#define SMIME_IP 0x20
#define SMIME_SIGNERS 0x40
#define SMIME_ENCRYPT (1 | SMIME_OP)
#define SMIME_DECRYPT (2 | SMIME_IP)
#define SMIME_SIGN (3 | SMIME_OP | SMIME_SIGNERS)
#define SMIME_VERIFY (4 | SMIME_IP)
#define SMIME_CMSOUT (5 | SMIME_IP | SMIME_OP)
#define SMIME_RESIGN (6 | SMIME_IP | SMIME_OP | SMIME_SIGNERS)
#define SMIME_DATAOUT (7 | SMIME_IP)
#define SMIME_DATA_CREATE (8 | SMIME_OP)
#define SMIME_DIGEST_VERIFY (9 | SMIME_IP)
#define SMIME_DIGEST_CREATE (10 | SMIME_OP)
#define SMIME_UNCOMPRESS (11 | SMIME_IP)
#define SMIME_COMPRESS (12 | SMIME_OP)
#define SMIME_ENCRYPTED_DECRYPT (13 | SMIME_IP)
#define SMIME_ENCRYPTED_ENCRYPT (14 | SMIME_OP)
#define SMIME_SIGN_RECEIPT (15 | SMIME_IP | SMIME_OP)
#define SMIME_VERIFY_RECEIPT (16 | SMIME_IP)
int verify_err = 0;
struct cms_key_param {
int idx;
STACK_OF(OPENSSL_STRING) *param;
struct cms_key_param *next;
};
static struct {
char *CAfile;
char *CApath;
X509 *cert;
char *certfile;
char *certsoutfile;
const EVP_CIPHER *cipher;
char *contfile;
ASN1_OBJECT *econtent_type;
STACK_OF(X509) *encerts;
int flags;
char *from;
char *infile;
int informat;
struct cms_key_param *key_first;
struct cms_key_param *key_param;
char *keyfile;
int keyform;
int noout;
int operation;
char *outfile;
int outformat;
char *passargin;
int print;
unsigned char *pwri_pass;
int rr_allorfirst;
STACK_OF(OPENSSL_STRING) *rr_from;
int rr_print;
STACK_OF(OPENSSL_STRING) *rr_to;
char *rctfile;
int rctformat;
char *recipfile;
unsigned char *secret_key;
unsigned char *secret_keyid;
size_t secret_keyidlen;
size_t secret_keylen;
const EVP_MD *sign_md;
char *signerfile;
STACK_OF(OPENSSL_STRING) *skkeys;
STACK_OF(OPENSSL_STRING) *sksigners;
char *subject;
char *to;
int verify_retcode;
X509_VERIFY_PARAM *vpm;
} cfg;
static const EVP_CIPHER *
get_cipher_by_name(char *name)
{
if (name == NULL || strcmp(name, "") == 0)
return (NULL);
#ifndef OPENSSL_NO_AES
else if (strcmp(name, "aes128") == 0)
return EVP_aes_128_cbc();
else if (strcmp(name, "aes192") == 0)
return EVP_aes_192_cbc();
else if (strcmp(name, "aes256") == 0)
return EVP_aes_256_cbc();
#endif
#ifndef OPENSSL_NO_CAMELLIA
else if (strcmp(name, "camellia128") == 0)
return EVP_camellia_128_cbc();
else if (strcmp(name, "camellia192") == 0)
return EVP_camellia_192_cbc();
else if (strcmp(name, "camellia256") == 0)
return EVP_camellia_256_cbc();
#endif
#ifndef OPENSSL_NO_DES
else if (strcmp(name, "des") == 0)
return EVP_des_cbc();
else if (strcmp(name, "des3") == 0)
return EVP_des_ede3_cbc();
#endif
#ifndef OPENSSL_NO_RC2
else if (!strcmp(name, "rc2-40"))
return EVP_rc2_40_cbc();
else if (!strcmp(name, "rc2-64"))
return EVP_rc2_64_cbc();
else if (!strcmp(name, "rc2-128"))
return EVP_rc2_cbc();
#endif
else
return (NULL);
}
static int
cms_opt_cipher(int argc, char **argv, int *argsused)
{
char *name = argv[0];
if (*name++ != '-')
return (1);
if ((cfg.cipher = get_cipher_by_name(name)) == NULL)
if ((cfg.cipher = EVP_get_cipherbyname(name)) == NULL)
return (1);
*argsused = 1;
return (0);
}
static int
cms_opt_econtent_type(char *arg)
{
ASN1_OBJECT_free(cfg.econtent_type);
if ((cfg.econtent_type = OBJ_txt2obj(arg, 0)) == NULL) {
BIO_printf(bio_err, "Invalid OID %s\n", arg);
return (1);
}
return (0);
}
static int
cms_opt_inkey(char *arg)
{
if (cfg.keyfile == NULL) {
cfg.keyfile = arg;
return (0);
}
if (cfg.signerfile == NULL) {
BIO_puts(bio_err, "Illegal -inkey without -signer\n");
return (1);
}
if (cfg.sksigners == NULL)
cfg.sksigners = sk_OPENSSL_STRING_new_null();
if (cfg.sksigners == NULL)
return (1);
if (!sk_OPENSSL_STRING_push(cfg.sksigners, cfg.signerfile))
return (1);
cfg.signerfile = NULL;
if (cfg.skkeys == NULL)
cfg.skkeys = sk_OPENSSL_STRING_new_null();
if (cfg.skkeys == NULL)
return (1);
if (!sk_OPENSSL_STRING_push(cfg.skkeys, cfg.keyfile))
return (1);
cfg.keyfile = arg;
return (0);
}
static int
cms_opt_keyopt(char *arg)
{
int keyidx = -1;
if (cfg.operation == SMIME_ENCRYPT) {
if (cfg.encerts != NULL)
keyidx += sk_X509_num(cfg.encerts);
} else {
if (cfg.keyfile != NULL || cfg.signerfile != NULL)
keyidx++;
if (cfg.skkeys != NULL)
keyidx += sk_OPENSSL_STRING_num(cfg.skkeys);
}
if (keyidx < 0) {
BIO_printf(bio_err, "No key specified\n");
return (1);
}
if (cfg.key_param == NULL ||
cfg.key_param->idx != keyidx) {
struct cms_key_param *nparam;
if ((nparam = calloc(1, sizeof(struct cms_key_param))) == NULL)
return (1);
nparam->idx = keyidx;
if ((nparam->param = sk_OPENSSL_STRING_new_null()) == NULL) {
free(nparam);
return (1);
}
nparam->next = NULL;
if (cfg.key_first == NULL)
cfg.key_first = nparam;
else
cfg.key_param->next = nparam;
cfg.key_param = nparam;
}
if (!sk_OPENSSL_STRING_push(cfg.key_param->param, arg))
return (1);
return (0);
}
static int
cms_opt_md(char *arg)
{
if ((cfg.sign_md = EVP_get_digestbyname(arg)) == NULL) {
BIO_printf(bio_err, "Unknown digest %s\n", arg);
return (1);
}
return (0);
}
static int
cms_opt_print(void)
{
cfg.noout = 1;
cfg.print = 1;
return (0);
}
static int
cms_opt_pwri_pass(char *arg)
{
cfg.pwri_pass = (unsigned char *)arg;
return (0);
}
static int
cms_opt_recip(char *arg)
{
if (cfg.operation == SMIME_ENCRYPT) {
if (cfg.encerts == NULL) {
if ((cfg.encerts = sk_X509_new_null()) == NULL)
return (1);
}
cfg.cert = load_cert(bio_err, arg, FORMAT_PEM,
NULL, "recipient certificate file");
if (cfg.cert == NULL)
return (1);
if (!sk_X509_push(cfg.encerts, cfg.cert))
return (1);
cfg.cert = NULL;
} else {
cfg.recipfile = arg;
}
return (0);
}
static int
cms_opt_receipt_request_from(char *arg)
{
if (cfg.rr_from == NULL)
cfg.rr_from = sk_OPENSSL_STRING_new_null();
if (cfg.rr_from == NULL)
return (1);
if (!sk_OPENSSL_STRING_push(cfg.rr_from, arg))
return (1);
return (0);
}
static int
cms_opt_receipt_request_to(char *arg)
{
if (cfg.rr_to == NULL)
cfg.rr_to = sk_OPENSSL_STRING_new_null();
if (cfg.rr_to == NULL)
return (1);
if (!sk_OPENSSL_STRING_push(cfg.rr_to, arg))
return (1);
return (0);
}
static int
cms_opt_secretkey(char *arg)
{
long ltmp;
free(cfg.secret_key);
if ((cfg.secret_key = string_to_hex(arg, &ltmp)) == NULL) {
BIO_printf(bio_err, "Invalid key %s\n", arg);
return (1);
}
cfg.secret_keylen = (size_t)ltmp;
return (0);
}
static int
cms_opt_secretkeyid(char *arg)
{
long ltmp;
free(cfg.secret_keyid);
if ((cfg.secret_keyid = string_to_hex(arg, &ltmp)) == NULL) {
BIO_printf(bio_err, "Invalid id %s\n", arg);
return (1);
}
cfg.secret_keyidlen = (size_t)ltmp;
return (0);
}
static int
cms_opt_signer(char *arg)
{
if (cfg.signerfile == NULL) {
cfg.signerfile = arg;
return (0);
}
if (cfg.sksigners == NULL)
cfg.sksigners = sk_OPENSSL_STRING_new_null();
if (cfg.sksigners == NULL)
return (1);
if (!sk_OPENSSL_STRING_push(cfg.sksigners, cfg.signerfile))
return (1);
if (cfg.keyfile == NULL)
cfg.keyfile = cfg.signerfile;
if (cfg.skkeys == NULL)
cfg.skkeys = sk_OPENSSL_STRING_new_null();
if (cfg.skkeys == NULL)
return (1);
if (!sk_OPENSSL_STRING_push(cfg.skkeys, cfg.keyfile))
return (1);
cfg.keyfile = NULL;
cfg.signerfile = arg;
return (0);
}
static int
cms_opt_verify_param(int argc, char **argv, int *argsused)
{
int oargc = argc;
int badarg = 0;
if (!args_verify(&argv, &argc, &badarg, bio_err, &cfg.vpm))
return (1);
if (badarg)
return (1);
*argsused = oargc - argc;
return (0);
}
static int
cms_opt_verify_receipt(char *arg)
{
cfg.operation = SMIME_VERIFY_RECEIPT;
cfg.rctfile = arg;
return (0);
}
static const struct option cms_options[] = {
#ifndef OPENSSL_NO_AES
{
.name = "aes128",
.desc = "Encrypt PEM output with CBC AES",
.type = OPTION_ARGV_FUNC,
.opt.argvfunc = cms_opt_cipher,
},
{
.name = "aes192",
.desc = "Encrypt PEM output with CBC AES",
.type = OPTION_ARGV_FUNC,
.opt.argvfunc = cms_opt_cipher,
},
{
.name = "aes256",
.desc = "Encrypt PEM output with CBC AES",
.type = OPTION_ARGV_FUNC,
.opt.argvfunc = cms_opt_cipher,
},
#endif
#ifndef OPENSSL_NO_CAMELLIA
{
.name = "camellia128",
.desc = "Encrypt PEM output with CBC Camellia",
.type = OPTION_ARGV_FUNC,
.opt.argvfunc = cms_opt_cipher,
},
{
.name = "camellia192",
.desc = "Encrypt PEM output with CBC Camellia",
.type = OPTION_ARGV_FUNC,
.opt.argvfunc = cms_opt_cipher,
},
{
.name = "camellia256",
.desc = "Encrypt PEM output with CBC Camellia",
.type = OPTION_ARGV_FUNC,
.opt.argvfunc = cms_opt_cipher,
},
#endif
#ifndef OPENSSL_NO_DES
{
.name = "des",
.desc = "Encrypt with DES",
.type = OPTION_ARGV_FUNC,
.opt.argvfunc = cms_opt_cipher,
},
{
.name = "des3",
.desc = "Encrypt with triple DES (default)",
.type = OPTION_ARGV_FUNC,
.opt.argvfunc = cms_opt_cipher,
},
#endif
#ifndef OPENSSL_NO_RC2
{
.name = "rc2-40",
.desc = "Encrypt with RC2-40",
.type = OPTION_ARGV_FUNC,
.opt.argvfunc = cms_opt_cipher,
},
{
.name = "rc2-64",
.desc = "Encrypt with RC2-64",
.type = OPTION_ARGV_FUNC,
.opt.argvfunc = cms_opt_cipher,
},
{
.name = "rc2-128",
.desc = "Encrypt with RC2-128",
.type = OPTION_ARGV_FUNC,
.opt.argvfunc = cms_opt_cipher,
},
#endif
{
.name = "CAfile",
.argname = "file",
.desc = "Certificate Authority file",
.type = OPTION_ARG,
.opt.arg = &cfg.CAfile,
},
{
.name = "CApath",
.argname = "path",
.desc = "Certificate Authority path",
.type = OPTION_ARG,
.opt.arg = &cfg.CApath,
},
{
.name = "binary",
.desc = "Do not translate message to text",
.type = OPTION_VALUE_OR,
.opt.value = &cfg.flags,
.value = CMS_BINARY,
},
{
.name = "certfile",
.argname = "file",
.desc = "Other certificates file",
.type = OPTION_ARG,
.opt.arg = &cfg.certfile,
},
{
.name = "certsout",
.argname = "file",
.desc = "Certificate output file",
.type = OPTION_ARG,
.opt.arg = &cfg.certsoutfile,
},
{
.name = "cmsout",
.desc = "Output CMS structure",
.type = OPTION_VALUE,
.opt.value = &cfg.operation,
.value = SMIME_CMSOUT,
},
{
.name = "compress",
.desc = "Create CMS CompressedData type",
.type = OPTION_VALUE,
.opt.value = &cfg.operation,
.value = SMIME_COMPRESS,
},
{
.name = "content",
.argname = "file",
.desc = "Supply or override content for detached signature",
.type = OPTION_ARG,
.opt.arg = &cfg.contfile,
},
{
.name = "crlfeol",
.desc = "Use CRLF as EOL termination instead of CR only",
.type = OPTION_VALUE_OR,
.opt.value = &cfg.flags,
.value = CMS_CRLFEOL,
},
{
.name = "data_create",
.desc = "Create CMS Data type",
.type = OPTION_VALUE,
.opt.value = &cfg.operation,
.value = SMIME_DATA_CREATE,
},
{
.name = "data_out",
.desc = "Output content from the input CMS Data type",
.type = OPTION_VALUE,
.opt.value = &cfg.operation,
.value = SMIME_DATAOUT,
},
{
.name = "debug_decrypt",
.desc = "Set the CMS_DEBUG_DECRYPT flag when decrypting",
.type = OPTION_VALUE_OR,
.opt.value = &cfg.flags,
.value = CMS_DEBUG_DECRYPT,
},
{
.name = "decrypt",
.desc = "Decrypt encrypted message",
.type = OPTION_VALUE,
.opt.value = &cfg.operation,
.value = SMIME_DECRYPT,
},
{
.name = "digest_create",
.desc = "Create CMS DigestedData type",
.type = OPTION_VALUE,
.opt.value = &cfg.operation,
.value = SMIME_DIGEST_CREATE,
},
{
.name = "digest_verify",
.desc = "Verify CMS DigestedData type and output the content",
.type = OPTION_VALUE,
.opt.value = &cfg.operation,
.value = SMIME_DIGEST_VERIFY,
},
{
.name = "econtent_type",
.argname = "type",
.desc = "Set the encapsulated content type",
.type = OPTION_ARG_FUNC,
.opt.argfunc = cms_opt_econtent_type,
},
{
.name = "encrypt",
.desc = "Encrypt message",
.type = OPTION_VALUE,
.opt.value = &cfg.operation,
.value = SMIME_ENCRYPT,
},
{
.name = "EncryptedData_decrypt",
.desc = "Decrypt CMS EncryptedData",
.type = OPTION_VALUE,
.opt.value = &cfg.operation,
.value = SMIME_ENCRYPTED_DECRYPT,
},
{
.name = "EncryptedData_encrypt",
.desc = "Encrypt content using supplied symmetric key and algorithm",
.type = OPTION_VALUE,
.opt.value = &cfg.operation,
.value = SMIME_ENCRYPTED_ENCRYPT,
},
{
.name = "from",
.argname = "addr",
.desc = "From address",
.type = OPTION_ARG,
.opt.arg = &cfg.from,
},
{
.name = "in",
.argname = "file",
.desc = "Input file",
.type = OPTION_ARG,
.opt.arg = &cfg.infile,
},
{
.name = "indef",
.desc = "Same as -stream",
.type = OPTION_VALUE_OR,
.opt.value = &cfg.flags,
.value = CMS_STREAM,
},
{
.name = "inform",
.argname = "fmt",
.desc = "Input format (DER, PEM or SMIME (default))",
.type = OPTION_ARG_FORMAT,
.opt.value = &cfg.informat,
},
{
.name = "inkey",
.argname = "file",
.desc = "Input key file",
.type = OPTION_ARG_FUNC,
.opt.argfunc = cms_opt_inkey,
},
{
.name = "keyform",
.argname = "fmt",
.desc = "Input key format (DER or PEM (default))",
.type = OPTION_ARG_FORMAT,
.opt.value = &cfg.keyform,
},
{
.name = "keyid",
.desc = "Use subject key identifier",
.type = OPTION_VALUE_OR,
.opt.value = &cfg.flags,
.value = CMS_USE_KEYID,
},
{
.name = "keyopt",
.argname = "nm:v",
.desc = "Set public key parameters",
.type = OPTION_ARG_FUNC,
.opt.argfunc = cms_opt_keyopt,
},
{
.name = "md",
.argname = "digest",
.desc = "Digest to use when signing or resigning",
.type = OPTION_ARG_FUNC,
.opt.argfunc = cms_opt_md,
},
{
.name = "no_attr_verify",
.desc = "Do not verify the signer's attribute of a signature",
.type = OPTION_VALUE_OR,
.opt.value = &cfg.flags,
.value = CMS_NO_ATTR_VERIFY,
},
{
.name = "no_content_verify",
.desc = "Do not verify the content of a signed message",
.type = OPTION_VALUE_OR,
.opt.value = &cfg.flags,
.value = CMS_NO_CONTENT_VERIFY,
},
{
.name = "no_signer_cert_verify",
.desc = "Do not verify the signer's certificate",
.type = OPTION_VALUE_OR,
.opt.value = &cfg.flags,
.value = CMS_NO_SIGNER_CERT_VERIFY,
},
{
.name = "noattr",
.desc = "Do not include any signed attributes",
.type = OPTION_VALUE_OR,
.opt.value = &cfg.flags,
.value = CMS_NOATTR,
},
{
.name = "nocerts",
.desc = "Do not include signer's certificate when signing",
.type = OPTION_VALUE_OR,
.opt.value = &cfg.flags,
.value = CMS_NOCERTS,
},
{
.name = "nodetach",
.desc = "Use opaque signing",
.type = OPTION_VALUE_AND,
.opt.value = &cfg.flags,
.value = ~CMS_DETACHED,
},
{
.name = "noindef",
.desc = "Disable CMS streaming",
.type = OPTION_VALUE_AND,
.opt.value = &cfg.flags,
.value = ~CMS_STREAM,
},
{
.name = "nointern",
.desc = "Do not search certificates in message for signer",
.type = OPTION_VALUE_OR,
.opt.value = &cfg.flags,
.value = CMS_NOINTERN,
},
{
.name = "nooldmime",
.desc = "Output old S/MIME content type",
.type = OPTION_VALUE_OR,
.opt.value = &cfg.flags,
.value = CMS_NOOLDMIMETYPE,
},
{
.name = "noout",
.desc = "Do not output the parsed CMS structure",
.type = OPTION_FLAG,
.opt.flag = &cfg.noout,
},
{
.name = "nosigs",
.desc = "Do not verify message signature",
.type = OPTION_VALUE_OR,
.opt.value = &cfg.flags,
.value = CMS_NOSIGS,
},
{
.name = "nosmimecap",
.desc = "Omit the SMIMECapabilities attribute",
.type = OPTION_VALUE_OR,
.opt.value = &cfg.flags,
.value = CMS_NOSMIMECAP,
},
{
.name = "noverify",
.desc = "Do not verify signer's certificate",
.type = OPTION_VALUE_OR,
.opt.value = &cfg.flags,
.value = CMS_NO_SIGNER_CERT_VERIFY,
},
{
.name = "out",
.argname = "file",
.desc = "Output file",
.type = OPTION_ARG,
.opt.arg = &cfg.outfile,
},
{
.name = "outform",
.argname = "fmt",
.desc = "Output format (DER, PEM or SMIME (default))",
.type = OPTION_ARG_FORMAT,
.opt.value = &cfg.outformat,
},
{
.name = "passin",
.argname = "src",
.desc = "Private key password source",
.type = OPTION_ARG,
.opt.arg = &cfg.passargin,
},
{
.name = "print",
.desc = "Print out all fields of the CMS structure for the -cmsout",
.type = OPTION_FUNC,
.opt.func = cms_opt_print,
},
{
.name = "pwri_password",
.argname = "arg",
.desc = "Specify PasswordRecipientInfo (PWRI) password to use",
.type = OPTION_ARG_FUNC,
.opt.argfunc = cms_opt_pwri_pass,
},
{
.name = "rctform",
.argname = "fmt",
.desc = "Receipt file format (DER, PEM or SMIME (default))",
.type = OPTION_ARG_FORMAT,
.opt.value = &cfg.rctformat,
},
{
.name = "receipt_request_all",
.desc = "Indicate requests should be provided by all recipients",
.type = OPTION_VALUE,
.opt.value = &cfg.rr_allorfirst,
.value = 0,
},
{
.name = "receipt_request_first",
.desc = "Indicate requests should be provided by first tier recipient",
.type = OPTION_VALUE,
.opt.value = &cfg.rr_allorfirst,
.value = 1,
},
{
.name = "receipt_request_from",
.argname = "addr",
.desc = "Add explicit email address where receipts should be supplied",
.type = OPTION_ARG_FUNC,
.opt.argfunc = cms_opt_receipt_request_from,
},
{
.name = "receipt_request_print",
.desc = "Print out the contents of any signed receipt requests",
.type = OPTION_FLAG,
.opt.flag = &cfg.rr_print,
},
{
.name = "receipt_request_to",
.argname = "addr",
.desc = "Add explicit email address where receipts should be sent to",
.type = OPTION_ARG_FUNC,
.opt.argfunc = cms_opt_receipt_request_to,
},
{
.name = "recip",
.argname = "file",
.desc = "Recipient certificate file for decryption",
.type = OPTION_ARG_FUNC,
.opt.argfunc = cms_opt_recip,
},
{
.name = "resign",
.desc = "Resign a signed message",
.type = OPTION_VALUE,
.opt.value = &cfg.operation,
.value = SMIME_RESIGN,
},
{
.name = "secretkey",
.argname = "key",
.desc = "Specify symmetric key to use",
.type = OPTION_ARG_FUNC,
.opt.argfunc = cms_opt_secretkey,
},
{
.name = "secretkeyid",
.argname = "id",
.desc = "The key identifier for the supplied symmetric key",
.type = OPTION_ARG_FUNC,
.opt.argfunc = cms_opt_secretkeyid,
},
{
.name = "sign",
.desc = "Sign message",
.type = OPTION_VALUE,
.opt.value = &cfg.operation,
.value = SMIME_SIGN,
},
{
.name = "sign_receipt",
.desc = "Generate a signed receipt for the message",
.type = OPTION_VALUE,
.opt.value = &cfg.operation,
.value = SMIME_SIGN_RECEIPT,
},
{
.name = "signer",
.argname = "file",
.desc = "Signer certificate file",
.type = OPTION_ARG_FUNC,
.opt.argfunc = cms_opt_signer,
},
{
.name = "stream",
.desc = "Enable CMS streaming",
.type = OPTION_VALUE_OR,
.opt.value = &cfg.flags,
.value = CMS_STREAM,
},
{
.name = "subject",
.argname = "s",
.desc = "Subject",
.type = OPTION_ARG,
.opt.arg = &cfg.subject,
},
{
.name = "text",
.desc = "Include or delete text MIME headers",
.type = OPTION_VALUE_OR,
.opt.value = &cfg.flags,
.value = CMS_TEXT,
},
{
.name = "to",
.argname = "addr",
.desc = "To address",
.type = OPTION_ARG,
.opt.arg = &cfg.to,
},
{
.name = "uncompress",
.desc = "Uncompress CMS CompressedData type",
.type = OPTION_VALUE,
.opt.value = &cfg.operation,
.value = SMIME_UNCOMPRESS,
},
{
.name = "verify",
.desc = "Verify signed message",
.type = OPTION_VALUE,
.opt.value = &cfg.operation,
.value = SMIME_VERIFY,
},
{
.name = "verify_receipt",
.argname = "file",
.desc = "Verify a signed receipt in file",
.type = OPTION_ARG_FUNC,
.opt.argfunc = cms_opt_verify_receipt,
},
{
.name = "verify_retcode",
.desc = "Set verification error code to exit code",
.type = OPTION_FLAG,
.opt.flag = &cfg.verify_retcode,
},
{
.name = "check_ss_sig",
.type = OPTION_ARGV_FUNC,
.opt.argvfunc = cms_opt_verify_param,
},
{
.name = "crl_check",
.type = OPTION_ARGV_FUNC,
.opt.argvfunc = cms_opt_verify_param,
},
{
.name = "crl_check_all",
.type = OPTION_ARGV_FUNC,
.opt.argvfunc = cms_opt_verify_param,
},
{
.name = "extended_crl",
.type = OPTION_ARGV_FUNC,
.opt.argvfunc = cms_opt_verify_param,
},
{
.name = "ignore_critical",
.type = OPTION_ARGV_FUNC,
.opt.argvfunc = cms_opt_verify_param,
},
{
.name = "issuer_checks",
.type = OPTION_ARGV_FUNC,
.opt.argvfunc = cms_opt_verify_param,
},
{
.name = "policy",
.type = OPTION_ARGV_FUNC,
.opt.argvfunc = cms_opt_verify_param,
},
{
.name = "policy_check",
.type = OPTION_ARGV_FUNC,
.opt.argvfunc = cms_opt_verify_param,
},
{
.name = "purpose",
.type = OPTION_ARGV_FUNC,
.opt.argvfunc = cms_opt_verify_param,
},
{
.name = "x509_strict",
.type = OPTION_ARGV_FUNC,
.opt.argvfunc = cms_opt_verify_param,
},
{
.name = NULL,
.type = OPTION_ARGV_FUNC,
.opt.argvfunc = cms_opt_cipher,
},
{ NULL },
};
static const struct option verify_shared_options[] = {
{
.name = "check_ss_sig",
.desc = "Check the root CA self-signed certificate signature",
},
{
.name = "crl_check",
.desc = "Enable CRL checking for the leaf certificate",
},
{
.name = "crl_check_all",
.desc = "Enable CRL checking for the entire certificate chain",
},
{
.name = "extended_crl",
.desc = "Enable extended CRL support",
},
{
.name = "ignore_critical",
.desc = "Disable critical extension checking",
},
{
.name = "issuer_checks",
.desc = "Enable debugging of certificate issuer checks",
},
{
.name = "policy",
.argname = "name",
.desc = "Add given policy to the acceptable set",
},
{
.name = "policy_check",
.desc = "Enable certificate policy checking",
},
{
.name = "purpose",
.argname = "name",
.desc = "Verify for the given purpose",
},
{
.name = "x509_strict",
.desc = "Use strict X.509 rules (disables workarounds)",
},
{ NULL },
};
static void
cms_usage(void)
{
int i;
fprintf(stderr, "usage: cms "
"[-aes128 | -aes192 | -aes256 | -camellia128 |\n"
" -camellia192 | -camellia256 | -des | -des3 |\n"
" -rc2-40 | -rc2-64 | -rc2-128] [-CAfile file]\n"
" [-CApath directory] [-binary] [-certfile file]\n"
" [-certsout file] [-cmsout] [-compress] [-content file]\n"
" [-crlfeol] [-data_create] [-data_out] [-debug_decrypt]\n"
" [-decrypt] [-digest_create] [-digest_verify]\n"
" [-econtent_type type] [-encrypt] [-EncryptedData_decrypt]\n"
" [-EncryptedData_encrypt] [-from addr] [-in file]\n"
" [-inform der | pem | smime] [-inkey file]\n"
" [-keyform der | pem] [-keyid] [-keyopt nm:v] [-md digest]\n"
" [-no_attr_verify] [-no_content_verify]\n"
" [-no_signer_cert_verify] [-noattr] [-nocerts] [-nodetach]\n"
" [-nointern] [-nooldmime] [-noout] [-nosigs] [-nosmimecap]\n"
" [-noverify] [-out file] [-outform der | pem | smime]\n"
" [-passin src] [-print] [-pwri_password arg]\n"
" [-rctform der | pem | smime]\n"
" [-receipt_request_all | -receipt_request_first]\n"
" [-receipt_request_from addr] [-receipt_request_print]\n"
" [-receipt_request_to addr] [-recip file] [-resign]\n"
" [-secretkey key] [-secretkeyid id] [-sign] [-sign_receipt]\n"
" [-signer file] [-stream | -indef | -noindef] [-subject s]\n"
" [-text] [-to addr] [-uncompress] [-verify]\n"
" [-verify_receipt file] [-verify_retcode] [cert.pem ...]\n\n");
options_usage(cms_options);
fprintf(stderr, "\nVerification options:\n\n");
options_usage(verify_shared_options);
fprintf(stderr, "\nValid purposes:\n\n");
for (i = 0; i < X509_PURPOSE_get_count(); i++) {
const X509_PURPOSE *ptmp = X509_PURPOSE_get0(i);
fprintf(stderr, " %-18s%s\n", X509_PURPOSE_get0_sname(ptmp),
X509_PURPOSE_get0_name(ptmp));
}
}
int
cms_main(int argc, char **argv)
{
int ret = 0;
char **args;
int argsused = 0;
const char *inmode = "r", *outmode = "w";
CMS_ContentInfo *cms = NULL, *rcms = NULL;
X509_STORE *store = NULL;
X509 *recip = NULL, *signer = NULL;
EVP_PKEY *key = NULL;
STACK_OF(X509) *other = NULL;
BIO *in = NULL, *out = NULL, *indata = NULL, *rctin = NULL;
int badarg = 0;
CMS_ReceiptRequest *rr = NULL;
char *passin = NULL;
unsigned char *pwri_tmp = NULL;
if (pledge("stdio rpath wpath cpath tty", NULL) == -1) {
perror("pledge");
exit(1);
}
memset(&cfg, 0, sizeof(cfg));
cfg.flags = CMS_DETACHED;
cfg.rr_allorfirst = -1;
cfg.informat = FORMAT_SMIME;
cfg.outformat = FORMAT_SMIME;
cfg.rctformat = FORMAT_SMIME;
cfg.keyform = FORMAT_PEM;
if (options_parse(argc, argv, cms_options, NULL, &argsused) != 0) {
goto argerr;
}
args = argv + argsused;
ret = 1;
if (((cfg.rr_allorfirst != -1) || cfg.rr_from != NULL) &&
cfg.rr_to == NULL) {
BIO_puts(bio_err, "No Signed Receipts Recipients\n");
goto argerr;
}
if (!(cfg.operation & SMIME_SIGNERS) &&
(cfg.rr_to != NULL || cfg.rr_from != NULL)) {
BIO_puts(bio_err, "Signed receipts only allowed with -sign\n");
goto argerr;
}
if (!(cfg.operation & SMIME_SIGNERS) &&
(cfg.skkeys != NULL || cfg.sksigners != NULL)) {
BIO_puts(bio_err, "Multiple signers or keys not allowed\n");
goto argerr;
}
if (cfg.operation & SMIME_SIGNERS) {
if (cfg.keyfile != NULL &&
cfg.signerfile == NULL) {
BIO_puts(bio_err, "Illegal -inkey without -signer\n");
goto argerr;
}
/* Check to see if any final signer needs to be appended */
if (cfg.signerfile != NULL) {
if (cfg.sksigners == NULL &&
(cfg.sksigners =
sk_OPENSSL_STRING_new_null()) == NULL)
goto end;
if (!sk_OPENSSL_STRING_push(cfg.sksigners,
cfg.signerfile))
goto end;
if (cfg.skkeys == NULL &&
(cfg.skkeys =
sk_OPENSSL_STRING_new_null()) == NULL)
goto end;
if (cfg.keyfile == NULL)
cfg.keyfile = cfg.signerfile;
if (!sk_OPENSSL_STRING_push(cfg.skkeys,
cfg.keyfile))
goto end;
}
if (cfg.sksigners == NULL) {
BIO_printf(bio_err,
"No signer certificate specified\n");
badarg = 1;
}
cfg.signerfile = NULL;
cfg.keyfile = NULL;
} else if (cfg.operation == SMIME_DECRYPT) {
if (cfg.recipfile == NULL &&
cfg.keyfile == NULL &&
cfg.secret_key == NULL &&
cfg.pwri_pass == NULL) {
BIO_printf(bio_err,
"No recipient certificate or key specified\n");
badarg = 1;
}
} else if (cfg.operation == SMIME_ENCRYPT) {
if (*args == NULL && cfg.secret_key == NULL &&
cfg.pwri_pass == NULL &&
cfg.encerts == NULL) {
BIO_printf(bio_err,
"No recipient(s) certificate(s) specified\n");
badarg = 1;
}
} else if (!cfg.operation) {
badarg = 1;
}
if (badarg) {
argerr:
cms_usage();
goto end;
}
if (!app_passwd(bio_err, cfg.passargin, NULL, &passin, NULL)) {
BIO_printf(bio_err, "Error getting password\n");
goto end;
}
ret = 2;
if (!(cfg.operation & SMIME_SIGNERS))
cfg.flags &= ~CMS_DETACHED;
if (cfg.operation & SMIME_OP) {
if (cfg.outformat == FORMAT_ASN1)
outmode = "wb";
} else {
if (cfg.flags & CMS_BINARY)
outmode = "wb";
}
if (cfg.operation & SMIME_IP) {
if (cfg.informat == FORMAT_ASN1)
inmode = "rb";
} else {
if (cfg.flags & CMS_BINARY)
inmode = "rb";
}
if (cfg.operation == SMIME_ENCRYPT) {
if (cfg.cipher == NULL) {
#ifndef OPENSSL_NO_DES
cfg.cipher = EVP_des_ede3_cbc();
#else
BIO_printf(bio_err, "No cipher selected\n");
goto end;
#endif
}
if (cfg.secret_key != NULL &&
cfg.secret_keyid == NULL) {
BIO_printf(bio_err, "No secret key id\n");
goto end;
}
if (*args != NULL && cfg.encerts == NULL)
if ((cfg.encerts = sk_X509_new_null()) == NULL)
goto end;
while (*args) {
if ((cfg.cert = load_cert(bio_err, *args,
FORMAT_PEM, NULL,
"recipient certificate file")) == NULL)
goto end;
if (!sk_X509_push(cfg.encerts, cfg.cert))
goto end;
cfg.cert = NULL;
args++;
}
}
if (cfg.certfile != NULL) {
if ((other = load_certs(bio_err, cfg.certfile,
FORMAT_PEM, NULL, "certificate file")) == NULL) {
ERR_print_errors(bio_err);
goto end;
}
}
if (cfg.recipfile != NULL &&
(cfg.operation == SMIME_DECRYPT)) {
if ((recip = load_cert(bio_err, cfg.recipfile,
FORMAT_PEM, NULL, "recipient certificate file")) == NULL) {
ERR_print_errors(bio_err);
goto end;
}
}
if (cfg.operation == SMIME_SIGN_RECEIPT) {
if ((signer = load_cert(bio_err, cfg.signerfile,
FORMAT_PEM, NULL,
"receipt signer certificate file")) == NULL) {
ERR_print_errors(bio_err);
goto end;
}
}
if (cfg.operation == SMIME_DECRYPT) {
if (cfg.keyfile == NULL)
cfg.keyfile = cfg.recipfile;
} else if ((cfg.operation == SMIME_SIGN) ||
(cfg.operation == SMIME_SIGN_RECEIPT)) {
if (cfg.keyfile == NULL)
cfg.keyfile = cfg.signerfile;
} else {
cfg.keyfile = NULL;
}
if (cfg.keyfile != NULL) {
key = load_key(bio_err, cfg.keyfile, cfg.keyform,
0, passin, "signing key file");
if (key == NULL)
goto end;
}
if (cfg.infile != NULL) {
if ((in = BIO_new_file(cfg.infile, inmode)) == NULL) {
BIO_printf(bio_err,
"Can't open input file %s\n", cfg.infile);
goto end;
}
} else {
if ((in = BIO_new_fp(stdin, BIO_NOCLOSE)) == NULL)
goto end;
}
if (cfg.operation & SMIME_IP) {
if (cfg.informat == FORMAT_SMIME)
cms = SMIME_read_CMS(in, &indata);
else if (cfg.informat == FORMAT_PEM)
cms = PEM_read_bio_CMS(in, NULL, NULL, NULL);
else if (cfg.informat == FORMAT_ASN1)
cms = d2i_CMS_bio(in, NULL);
else {
BIO_printf(bio_err, "Bad input format for CMS file\n");
goto end;
}
if (cms == NULL) {
BIO_printf(bio_err, "Error reading S/MIME message\n");
goto end;
}
if (cfg.contfile != NULL) {
BIO_free(indata);
if ((indata = BIO_new_file(cfg.contfile,
"rb")) == NULL) {
BIO_printf(bio_err,
"Can't read content file %s\n",
cfg.contfile);
goto end;
}
}
if (cfg.certsoutfile != NULL) {
STACK_OF(X509) *allcerts;
if ((allcerts = CMS_get1_certs(cms)) == NULL)
goto end;
if (!save_certs(cfg.certsoutfile, allcerts)) {
BIO_printf(bio_err,
"Error writing certs to %s\n",
cfg.certsoutfile);
sk_X509_pop_free(allcerts, X509_free);
ret = 5;
goto end;
}
sk_X509_pop_free(allcerts, X509_free);
}
}
if (cfg.rctfile != NULL) {
char *rctmode = (cfg.rctformat == FORMAT_ASN1) ?
"rb" : "r";
if ((rctin = BIO_new_file(cfg.rctfile, rctmode)) == NULL) {
BIO_printf(bio_err,
"Can't open receipt file %s\n", cfg.rctfile);
goto end;
}
if (cfg.rctformat == FORMAT_SMIME)
rcms = SMIME_read_CMS(rctin, NULL);
else if (cfg.rctformat == FORMAT_PEM)
rcms = PEM_read_bio_CMS(rctin, NULL, NULL, NULL);
else if (cfg.rctformat == FORMAT_ASN1)
rcms = d2i_CMS_bio(rctin, NULL);
else {
BIO_printf(bio_err, "Bad input format for receipt\n");
goto end;
}
if (rcms == NULL) {
BIO_printf(bio_err, "Error reading receipt\n");
goto end;
}
}
if (cfg.outfile != NULL) {
if ((out = BIO_new_file(cfg.outfile, outmode)) == NULL) {
BIO_printf(bio_err,
"Can't open output file %s\n", cfg.outfile);
goto end;
}
} else {
if ((out = BIO_new_fp(stdout, BIO_NOCLOSE)) == NULL)
goto end;
}
if ((cfg.operation == SMIME_VERIFY) ||
(cfg.operation == SMIME_VERIFY_RECEIPT)) {
if ((store = setup_verify(bio_err, cfg.CAfile,
cfg.CApath)) == NULL)
goto end;
if (cfg.vpm != NULL) {
if (!X509_STORE_set1_param(store, cfg.vpm))
goto end;
}
}
ret = 3;
if (cfg.operation == SMIME_DATA_CREATE) {
cms = CMS_data_create(in, cfg.flags);
} else if (cfg.operation == SMIME_DIGEST_CREATE) {
cms = CMS_digest_create(in, cfg.sign_md,
cfg.flags);
} else if (cfg.operation == SMIME_COMPRESS) {
cms = CMS_compress(in, -1, cfg.flags);
} else if (cfg.operation == SMIME_ENCRYPT) {
int i;
cfg.flags |= CMS_PARTIAL;
cms = CMS_encrypt(NULL, in, cfg.cipher,
cfg.flags);
if (cms == NULL)
goto end;
for (i = 0; i < sk_X509_num(cfg.encerts); i++) {
CMS_RecipientInfo *ri;
struct cms_key_param *kparam;
int tflags = cfg.flags;
X509 *x;
if ((x = sk_X509_value(cfg.encerts, i)) == NULL)
goto end;
for (kparam = cfg.key_first; kparam != NULL;
kparam = kparam->next) {
if (kparam->idx == i) {
tflags |= CMS_KEY_PARAM;
break;
}
}
ri = CMS_add1_recipient_cert(cms, x, tflags);
if (ri == NULL)
goto end;
if (kparam != NULL) {
EVP_PKEY_CTX *pctx;
if ((pctx = CMS_RecipientInfo_get0_pkey_ctx(
ri)) == NULL)
goto end;
if (!cms_set_pkey_param(pctx, kparam->param))
goto end;
}
}
if (cfg.secret_key != NULL) {
if (CMS_add0_recipient_key(cms, NID_undef,
cfg.secret_key, cfg.secret_keylen,
cfg.secret_keyid, cfg.secret_keyidlen,
NULL, NULL, NULL) == NULL)
goto end;
/* NULL these because call absorbs them */
cfg.secret_key = NULL;
cfg.secret_keyid = NULL;
}
if (cfg.pwri_pass != NULL) {
pwri_tmp = strdup(cfg.pwri_pass);
if (pwri_tmp == NULL)
goto end;
if (CMS_add0_recipient_password(cms, -1, NID_undef,
NID_undef, pwri_tmp, -1, NULL) == NULL)
goto end;
pwri_tmp = NULL;
}
if (!(cfg.flags & CMS_STREAM)) {
if (!CMS_final(cms, in, NULL, cfg.flags))
goto end;
}
} else if (cfg.operation == SMIME_ENCRYPTED_ENCRYPT) {
cms = CMS_EncryptedData_encrypt(in, cfg.cipher,
cfg.secret_key, cfg.secret_keylen,
cfg.flags);
} else if (cfg.operation == SMIME_SIGN_RECEIPT) {
CMS_ContentInfo *srcms = NULL;
STACK_OF(CMS_SignerInfo) *sis;
CMS_SignerInfo *si;
sis = CMS_get0_SignerInfos(cms);
if (sis == NULL)
goto end;
si = sk_CMS_SignerInfo_value(sis, 0);
if (si == NULL)
goto end;
srcms = CMS_sign_receipt(si, signer, key, other,
cfg.flags);
if (srcms == NULL)
goto end;
CMS_ContentInfo_free(cms);
cms = srcms;
} else if (cfg.operation & SMIME_SIGNERS) {
int i;
/*
* If detached data content we enable streaming if S/MIME
* output format.
*/
if (cfg.operation == SMIME_SIGN) {
if (cfg.flags & CMS_DETACHED) {
if (cfg.outformat == FORMAT_SMIME)
cfg.flags |= CMS_STREAM;
}
cfg.flags |= CMS_PARTIAL;
cms = CMS_sign(NULL, NULL, other, in, cfg.flags);
if (cms == NULL)
goto end;
if (cfg.econtent_type != NULL)
if (!CMS_set1_eContentType(cms,
cfg.econtent_type))
goto end;
if (cfg.rr_to != NULL) {
rr = make_receipt_request(cfg.rr_to,
cfg.rr_allorfirst,
cfg.rr_from);
if (rr == NULL) {
BIO_puts(bio_err,
"Signed Receipt Request Creation Error\n");
goto end;
}
}
} else {
cfg.flags |= CMS_REUSE_DIGEST;
}
for (i = 0; i < sk_OPENSSL_STRING_num(cfg.sksigners); i++) {
CMS_SignerInfo *si;
struct cms_key_param *kparam;
int tflags = cfg.flags;
cfg.signerfile = sk_OPENSSL_STRING_value(
cfg.sksigners, i);
cfg.keyfile = sk_OPENSSL_STRING_value(
cfg.skkeys, i);
signer = load_cert(bio_err, cfg.signerfile,
FORMAT_PEM, NULL, "signer certificate");
if (signer == NULL)
goto end;
key = load_key(bio_err, cfg.keyfile,
cfg.keyform, 0, passin, "signing key file");
if (key == NULL)
goto end;
for (kparam = cfg.key_first; kparam != NULL;
kparam = kparam->next) {
if (kparam->idx == i) {
tflags |= CMS_KEY_PARAM;
break;
}
}
si = CMS_add1_signer(cms, signer, key,
cfg.sign_md, tflags);
if (si == NULL)
goto end;
if (kparam != NULL) {
EVP_PKEY_CTX *pctx;
if ((pctx = CMS_SignerInfo_get0_pkey_ctx(
si)) == NULL)
goto end;
if (!cms_set_pkey_param(pctx, kparam->param))
goto end;
}
if (rr != NULL && !CMS_add1_ReceiptRequest(si, rr))
goto end;
X509_free(signer);
signer = NULL;
EVP_PKEY_free(key);
key = NULL;
}
/* If not streaming or resigning finalize structure */
if ((cfg.operation == SMIME_SIGN) &&
!(cfg.flags & CMS_STREAM)) {
if (!CMS_final(cms, in, NULL, cfg.flags))
goto end;
}
}
if (cms == NULL) {
BIO_printf(bio_err, "Error creating CMS structure\n");
goto end;
}
ret = 4;
if (cfg.operation == SMIME_DECRYPT) {
if (cfg.flags & CMS_DEBUG_DECRYPT)
CMS_decrypt(cms, NULL, NULL, NULL, NULL,
cfg.flags);
if (cfg.secret_key != NULL) {
if (!CMS_decrypt_set1_key(cms, cfg.secret_key,
cfg.secret_keylen, cfg.secret_keyid,
cfg.secret_keyidlen)) {
BIO_puts(bio_err,
"Error decrypting CMS using secret key\n");
goto end;
}
}
if (key != NULL) {
if (!CMS_decrypt_set1_pkey(cms, key, recip)) {
BIO_puts(bio_err,
"Error decrypting CMS using private key\n");
goto end;
}
}
if (cfg.pwri_pass != NULL) {
if (!CMS_decrypt_set1_password(cms,
cfg.pwri_pass, -1)) {
BIO_puts(bio_err,
"Error decrypting CMS using password\n");
goto end;
}
}
if (!CMS_decrypt(cms, NULL, NULL, indata, out,
cfg.flags)) {
BIO_printf(bio_err, "Error decrypting CMS structure\n");
goto end;
}
} else if (cfg.operation == SMIME_DATAOUT) {
if (!CMS_data(cms, out, cfg.flags))
goto end;
} else if (cfg.operation == SMIME_UNCOMPRESS) {
if (!CMS_uncompress(cms, indata, out, cfg.flags))
goto end;
} else if (cfg.operation == SMIME_DIGEST_VERIFY) {
if (CMS_digest_verify(cms, indata, out, cfg.flags) > 0)
BIO_printf(bio_err, "Verification successful\n");
else {
BIO_printf(bio_err, "Verification failure\n");
goto end;
}
} else if (cfg.operation == SMIME_ENCRYPTED_DECRYPT) {
if (!CMS_EncryptedData_decrypt(cms, cfg.secret_key,
cfg.secret_keylen, indata, out, cfg.flags))
goto end;
} else if (cfg.operation == SMIME_VERIFY) {
if (CMS_verify(cms, other, store, indata, out,
cfg.flags) > 0) {
BIO_printf(bio_err, "Verification successful\n");
} else {
BIO_printf(bio_err, "Verification failure\n");
if (cfg.verify_retcode)
ret = verify_err + 32;
goto end;
}
if (cfg.signerfile != NULL) {
STACK_OF(X509) *signers;
if ((signers = CMS_get0_signers(cms)) == NULL)
goto end;
if (!save_certs(cfg.signerfile, signers)) {
BIO_printf(bio_err,
"Error writing signers to %s\n",
cfg.signerfile);
sk_X509_free(signers);
ret = 5;
goto end;
}
sk_X509_free(signers);
}
if (cfg.rr_print)
receipt_request_print(bio_err, cms);
} else if (cfg.operation == SMIME_VERIFY_RECEIPT) {
if (CMS_verify_receipt(rcms, cms, other, store,
cfg.flags) > 0) {
BIO_printf(bio_err, "Verification successful\n");
} else {
BIO_printf(bio_err, "Verification failure\n");
goto end;
}
} else {
if (cfg.noout) {
if (cfg.print &&
!CMS_ContentInfo_print_ctx(out, cms, 0, NULL))
goto end;
} else if (cfg.outformat == FORMAT_SMIME) {
if (cfg.to != NULL)
BIO_printf(out, "To: %s\n", cfg.to);
if (cfg.from != NULL)
BIO_printf(out, "From: %s\n", cfg.from);
if (cfg.subject != NULL)
BIO_printf(out, "Subject: %s\n",
cfg.subject);
if (cfg.operation == SMIME_RESIGN)
ret = SMIME_write_CMS(out, cms, indata,
cfg.flags);
else
ret = SMIME_write_CMS(out, cms, in,
cfg.flags);
} else if (cfg.outformat == FORMAT_PEM) {
ret = PEM_write_bio_CMS_stream(out, cms, in,
cfg.flags);
} else if (cfg.outformat == FORMAT_ASN1) {
ret = i2d_CMS_bio_stream(out, cms, in, cfg.flags);
} else {
BIO_printf(bio_err, "Bad output format for CMS file\n");
goto end;
}
if (ret <= 0) {
ret = 6;
goto end;
}
}
ret = 0;
end:
if (ret)
ERR_print_errors(bio_err);
sk_X509_pop_free(cfg.encerts, X509_free);
sk_X509_pop_free(other, X509_free);
X509_VERIFY_PARAM_free(cfg.vpm);
sk_OPENSSL_STRING_free(cfg.sksigners);
sk_OPENSSL_STRING_free(cfg.skkeys);
free(cfg.secret_key);
free(cfg.secret_keyid);
free(pwri_tmp);
ASN1_OBJECT_free(cfg.econtent_type);
CMS_ReceiptRequest_free(rr);
sk_OPENSSL_STRING_free(cfg.rr_to);
sk_OPENSSL_STRING_free(cfg.rr_from);
for (cfg.key_param = cfg.key_first; cfg.key_param;) {
struct cms_key_param *tparam;
sk_OPENSSL_STRING_free(cfg.key_param->param);
tparam = cfg.key_param->next;
free(cfg.key_param);
cfg.key_param = tparam;
}
X509_STORE_free(store);
X509_free(cfg.cert);
X509_free(recip);
X509_free(signer);
EVP_PKEY_free(key);
CMS_ContentInfo_free(cms);
CMS_ContentInfo_free(rcms);
BIO_free(rctin);
BIO_free(in);
BIO_free(indata);
BIO_free_all(out);
free(passin);
return (ret);
}
static int
save_certs(char *signerfile, STACK_OF(X509) *signers)
{
int i;
BIO *tmp;
if (signerfile == NULL)
return 1;
tmp = BIO_new_file(signerfile, "w");
if (tmp == NULL)
return 0;
for (i = 0; i < sk_X509_num(signers); i++)
PEM_write_bio_X509(tmp, sk_X509_value(signers, i));
BIO_free(tmp);
return 1;
}
static void
gnames_stack_print(BIO *out, STACK_OF(GENERAL_NAMES) *gns)
{
STACK_OF(GENERAL_NAME) *gens;
GENERAL_NAME *gen;
int i, j;
for (i = 0; i < sk_GENERAL_NAMES_num(gns); i++) {
gens = sk_GENERAL_NAMES_value(gns, i);
for (j = 0; j < sk_GENERAL_NAME_num(gens); j++) {
gen = sk_GENERAL_NAME_value(gens, j);
BIO_puts(out, " ");
GENERAL_NAME_print(out, gen);
BIO_puts(out, "\n");
}
}
return;
}
static void
receipt_request_print(BIO *out, CMS_ContentInfo *cms)
{
STACK_OF(CMS_SignerInfo) *sis;
CMS_SignerInfo *si;
CMS_ReceiptRequest *rr;
int allorfirst;
STACK_OF(GENERAL_NAMES) *rto, *rlist;
ASN1_STRING *scid;
int i, rv;
if ((sis = CMS_get0_SignerInfos(cms)) == NULL)
return;
for (i = 0; i < sk_CMS_SignerInfo_num(sis); i++) {
if ((si = sk_CMS_SignerInfo_value(sis, i)) == NULL)
return;
rv = CMS_get1_ReceiptRequest(si, &rr);
BIO_printf(bio_err, "Signer %d:\n", i + 1);
if (rv == 0) {
BIO_puts(bio_err, " No Receipt Request\n");
} else if (rv < 0) {
BIO_puts(bio_err, " Receipt Request Parse Error\n");
ERR_print_errors(bio_err);
} else {
char *id;
int idlen;
CMS_ReceiptRequest_get0_values(rr, &scid, &allorfirst,
&rlist, &rto);
BIO_puts(out, " Signed Content ID:\n");
idlen = ASN1_STRING_length(scid);
id = (char *) ASN1_STRING_data(scid);
BIO_dump_indent(out, id, idlen, 4);
BIO_puts(out, " Receipts From");
if (rlist != NULL) {
BIO_puts(out, " List:\n");
gnames_stack_print(out, rlist);
} else if (allorfirst == 1) {
BIO_puts(out, ": First Tier\n");
} else if (allorfirst == 0) {
BIO_puts(out, ": All\n");
} else {
BIO_printf(out, " Unknown (%d)\n", allorfirst);
}
BIO_puts(out, " Receipts To:\n");
gnames_stack_print(out, rto);
}
CMS_ReceiptRequest_free(rr);
}
}
static STACK_OF(GENERAL_NAMES) *
make_names_stack(STACK_OF(OPENSSL_STRING) *ns)
{
int i;
STACK_OF(GENERAL_NAMES) *ret;
GENERAL_NAMES *gens = NULL;
GENERAL_NAME *gen = NULL;
if ((ret = sk_GENERAL_NAMES_new_null()) == NULL)
goto err;
for (i = 0; i < sk_OPENSSL_STRING_num(ns); i++) {
char *str = sk_OPENSSL_STRING_value(ns, i);
gen = a2i_GENERAL_NAME(NULL, NULL, NULL, GEN_EMAIL, str, 0);
if (gen == NULL)
goto err;
gens = GENERAL_NAMES_new();
if (gens == NULL)
goto err;
if (!sk_GENERAL_NAME_push(gens, gen))
goto err;
gen = NULL;
if (!sk_GENERAL_NAMES_push(ret, gens))
goto err;
gens = NULL;
}
return ret;
err:
sk_GENERAL_NAMES_pop_free(ret, GENERAL_NAMES_free);
GENERAL_NAMES_free(gens);
GENERAL_NAME_free(gen);
return NULL;
}
static CMS_ReceiptRequest *
make_receipt_request(STACK_OF(OPENSSL_STRING) *rr_to, int rr_allorfirst,
STACK_OF(OPENSSL_STRING) *rr_from)
{
STACK_OF(GENERAL_NAMES) *rct_to = NULL, *rct_from = NULL;
CMS_ReceiptRequest *rr;
rct_to = make_names_stack(rr_to);
if (rct_to == NULL)
goto err;
if (rr_from != NULL) {
rct_from = make_names_stack(rr_from);
if (rct_from == NULL)
goto err;
} else {
rct_from = NULL;
}
if ((rr = CMS_ReceiptRequest_create0(NULL, -1, rr_allorfirst, rct_from,
rct_to)) == NULL)
goto err;
return rr;
err:
sk_GENERAL_NAMES_pop_free(rct_to, GENERAL_NAMES_free);
sk_GENERAL_NAMES_pop_free(rct_from, GENERAL_NAMES_free);
return NULL;
}
static int
cms_set_pkey_param(EVP_PKEY_CTX *pctx, STACK_OF(OPENSSL_STRING) *param)
{
char *keyopt;
int i;
if (sk_OPENSSL_STRING_num(param) <= 0)
return 1;
for (i = 0; i < sk_OPENSSL_STRING_num(param); i++) {
keyopt = sk_OPENSSL_STRING_value(param, i);
if (pkey_ctrl_string(pctx, keyopt) <= 0) {
BIO_printf(bio_err, "parameter error \"%s\"\n", keyopt);
ERR_print_errors(bio_err);
return 0;
}
}
return 1;
}
#endif
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