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cms.c
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/*
* Copyright 2008-2023 The OpenSSL Project Authors. All Rights Reserved.
*
* Licensed under the Apache License 2.0 (the "License"). You may not use
* this file except in compliance with the License. You can obtain a copy
* in the file LICENSE in the source distribution or at
* https://www.openssl.org/source/license.html
*/
/* CMS utility function */
#include <stdio.h>
#include <string.h>
#include "apps.h"
#include "progs.h"
#include <openssl/crypto.h>
#include <openssl/pem.h>
#include <openssl/err.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 int cms_cb(int ok, X509_STORE_CTX *ctx);
static void receipt_request_print(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 0x100
#define SMIME_IP 0x200
#define SMIME_SIGNERS 0x400
#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_RESIGN (5 | SMIME_IP | SMIME_OP | SMIME_SIGNERS)
#define SMIME_SIGN_RECEIPT (6 | SMIME_IP | SMIME_OP)
#define SMIME_VERIFY_RECEIPT (7 | SMIME_IP)
#define SMIME_DIGEST_CREATE (8 | SMIME_OP)
#define SMIME_DIGEST_VERIFY (9 | SMIME_IP)
#define SMIME_COMPRESS (10 | SMIME_OP)
#define SMIME_UNCOMPRESS (11 | SMIME_IP)
#define SMIME_ENCRYPTED_ENCRYPT (12 | SMIME_OP)
#define SMIME_ENCRYPTED_DECRYPT (13 | SMIME_IP)
#define SMIME_DATA_CREATE (14 | SMIME_OP)
#define SMIME_DATA_OUT (15 | SMIME_IP)
#define SMIME_CMSOUT (16 | SMIME_IP | SMIME_OP)
static int verify_err = 0;
typedef struct cms_key_param_st cms_key_param;
struct cms_key_param_st {
int idx;
STACK_OF(OPENSSL_STRING) *param;
cms_key_param *next;
};
typedef enum OPTION_choice {
OPT_COMMON,
OPT_INFORM, OPT_OUTFORM, OPT_IN, OPT_OUT, OPT_ENCRYPT,
OPT_DECRYPT, OPT_SIGN, OPT_CADES, OPT_SIGN_RECEIPT, OPT_RESIGN,
OPT_VERIFY, OPT_VERIFY_RETCODE, OPT_VERIFY_RECEIPT,
OPT_CMSOUT, OPT_DATA_OUT, OPT_DATA_CREATE, OPT_DIGEST_VERIFY,
OPT_DIGEST, OPT_DIGEST_CREATE, OPT_COMPRESS, OPT_UNCOMPRESS,
OPT_ED_DECRYPT, OPT_ED_ENCRYPT, OPT_DEBUG_DECRYPT, OPT_TEXT,
OPT_ASCIICRLF, OPT_NOINTERN, OPT_NOVERIFY, OPT_NOCERTS,
OPT_NOATTR, OPT_NODETACH, OPT_NOSMIMECAP, OPT_BINARY, OPT_KEYID,
OPT_NOSIGS, OPT_NO_CONTENT_VERIFY, OPT_NO_ATTR_VERIFY, OPT_INDEF,
OPT_NOINDEF, OPT_CRLFEOL, OPT_NOOUT, OPT_RR_PRINT,
OPT_RR_ALL, OPT_RR_FIRST, OPT_RCTFORM, OPT_CERTFILE, OPT_CAFILE,
OPT_CAPATH, OPT_CASTORE, OPT_NOCAPATH, OPT_NOCAFILE, OPT_NOCASTORE,
OPT_CONTENT, OPT_PRINT, OPT_NAMEOPT,
OPT_SECRETKEY, OPT_SECRETKEYID, OPT_PWRI_PASSWORD, OPT_ECONTENT_TYPE,
OPT_PASSIN, OPT_TO, OPT_FROM, OPT_SUBJECT, OPT_SIGNER, OPT_RECIP,
OPT_CERTSOUT, OPT_MD, OPT_INKEY, OPT_KEYFORM, OPT_KEYOPT, OPT_RR_FROM,
OPT_RR_TO, OPT_AES128_WRAP, OPT_AES192_WRAP, OPT_AES256_WRAP,
OPT_3DES_WRAP, OPT_WRAP, OPT_ENGINE,
OPT_R_ENUM,
OPT_PROV_ENUM, OPT_CONFIG,
OPT_V_ENUM,
OPT_CIPHER,
OPT_ORIGINATOR
} OPTION_CHOICE;
const OPTIONS cms_options[] = {
{OPT_HELP_STR, 1, '-', "Usage: %s [options] [cert...]\n"},
{"help", OPT_HELP, '-', "Display this summary"},
OPT_SECTION("General"),
{"in", OPT_IN, '<', "Input file"},
{"out", OPT_OUT, '>', "Output file"},
OPT_CONFIG_OPTION,
OPT_SECTION("Operation"),
{"encrypt", OPT_ENCRYPT, '-', "Encrypt message"},
{"decrypt", OPT_DECRYPT, '-', "Decrypt encrypted message"},
{"sign", OPT_SIGN, '-', "Sign message"},
{"verify", OPT_VERIFY, '-', "Verify signed message"},
{"resign", OPT_RESIGN, '-', "Resign a signed message"},
{"sign_receipt", OPT_SIGN_RECEIPT, '-',
"Generate a signed receipt for a message"},
{"verify_receipt", OPT_VERIFY_RECEIPT, '<',
"Verify receipts; exit if receipt signatures do not verify"},
{"digest", OPT_DIGEST, 's', "Sign a pre-computed digest in hex notation"},
{"digest_create", OPT_DIGEST_CREATE, '-',
"Create a CMS \"DigestedData\" object"},
{"digest_verify", OPT_DIGEST_VERIFY, '-',
"Verify a CMS \"DigestedData\" object and output it"},
{"compress", OPT_COMPRESS, '-', "Create a CMS \"CompressedData\" object"},
{"uncompress", OPT_UNCOMPRESS, '-',
"Uncompress a CMS \"CompressedData\" object"},
{"EncryptedData_encrypt", OPT_ED_ENCRYPT, '-',
"Create CMS \"EncryptedData\" object using symmetric key"},
{"EncryptedData_decrypt", OPT_ED_DECRYPT, '-',
"Decrypt CMS \"EncryptedData\" object using symmetric key"},
{"data_create", OPT_DATA_CREATE, '-', "Create a CMS \"Data\" object"},
{"data_out", OPT_DATA_OUT, '-', "Copy CMS \"Data\" object to output"},
{"cmsout", OPT_CMSOUT, '-', "Output CMS structure"},
OPT_SECTION("File format"),
{"inform", OPT_INFORM, 'c', "Input format SMIME (default), PEM or DER"},
{"outform", OPT_OUTFORM, 'c',
"Output format SMIME (default), PEM or DER"},
{"rctform", OPT_RCTFORM, 'F', "Receipt file format"},
{"stream", OPT_INDEF, '-', "Enable CMS streaming"},
{"indef", OPT_INDEF, '-', "Same as -stream"},
{"noindef", OPT_NOINDEF, '-', "Disable CMS streaming"},
{"binary", OPT_BINARY, '-',
"Treat input as binary: do not translate to canonical form"},
{"crlfeol", OPT_CRLFEOL, '-',
"Use CRLF as EOL termination instead of CR only" },
{"asciicrlf", OPT_ASCIICRLF, '-',
"Perform CRLF canonicalisation when signing"},
OPT_SECTION("Keys and passwords"),
{"pwri_password", OPT_PWRI_PASSWORD, 's',
"Specific password for recipient"},
{"secretkey", OPT_SECRETKEY, 's',
"Use specified hex-encoded key to decrypt/encrypt recipients or content"},
{"secretkeyid", OPT_SECRETKEYID, 's',
"Identity of the -secretkey for CMS \"KEKRecipientInfo\" object"},
{"inkey", OPT_INKEY, 's',
"Input private key (if not signer or recipient)"},
{"passin", OPT_PASSIN, 's', "Input file pass phrase source"},
{"keyopt", OPT_KEYOPT, 's', "Set public key parameters as n:v pairs"},
{"keyform", OPT_KEYFORM, 'f',
"Input private key format (ENGINE, other values ignored)"},
#ifndef OPENSSL_NO_ENGINE
{"engine", OPT_ENGINE, 's', "Use engine e, possibly a hardware device"},
#endif
OPT_PROV_OPTIONS,
OPT_R_OPTIONS,
OPT_SECTION("Encryption and decryption"),
{"originator", OPT_ORIGINATOR, 's', "Originator certificate file"},
{"recip", OPT_RECIP, '<', "Recipient cert file"},
{"cert...", OPT_PARAM, '.',
"Recipient certs (optional; used only when encrypting)"},
{"", OPT_CIPHER, '-',
"The encryption algorithm to use (any supported cipher)"},
{"wrap", OPT_WRAP, 's',
"Key wrap algorithm to use when encrypting with key agreement"},
{"aes128-wrap", OPT_AES128_WRAP, '-', "Use AES128 to wrap key"},
{"aes192-wrap", OPT_AES192_WRAP, '-', "Use AES192 to wrap key"},
{"aes256-wrap", OPT_AES256_WRAP, '-', "Use AES256 to wrap key"},
{"des3-wrap", OPT_3DES_WRAP, '-', "Use 3DES-EDE to wrap key"},
{"debug_decrypt", OPT_DEBUG_DECRYPT, '-',
"Disable MMA protection, return error if no recipient found (see doc)"},
OPT_SECTION("Signing"),
{"md", OPT_MD, 's', "Digest algorithm to use"},
{"signer", OPT_SIGNER, 's', "Signer certificate input file"},
{"certfile", OPT_CERTFILE, '<', "Other certificates file"},
{"cades", OPT_CADES, '-',
"Include signingCertificate attribute (CAdES-BES)"},
{"nodetach", OPT_NODETACH, '-', "Use opaque signing"},
{"nocerts", OPT_NOCERTS, '-',
"Don't include signer's certificate when signing"},
{"noattr", OPT_NOATTR, '-', "Don't include any signed attributes"},
{"nosmimecap", OPT_NOSMIMECAP, '-', "Omit the SMIMECapabilities attribute"},
{"receipt_request_all", OPT_RR_ALL, '-',
"When signing, create a receipt request for all recipients"},
{"receipt_request_first", OPT_RR_FIRST, '-',
"When signing, create a receipt request for first recipient"},
{"receipt_request_from", OPT_RR_FROM, 's',
"Create signed receipt request with specified email address"},
{"receipt_request_to", OPT_RR_TO, 's',
"Create signed receipt targeted to specified address"},
OPT_SECTION("Verification"),
{"signer", OPT_DUP, 's', "Signer certificate(s) output file"},
{"content", OPT_CONTENT, '<',
"Supply or override content for detached signature"},
{"no_content_verify", OPT_NO_CONTENT_VERIFY, '-',
"Do not verify signed content signatures"},
{"no_attr_verify", OPT_NO_ATTR_VERIFY, '-',
"Do not verify signed attribute signatures"},
{"nosigs", OPT_NOSIGS, '-', "Don't verify message signature"},
{"noverify", OPT_NOVERIFY, '-', "Don't verify signers certificate"},
{"nointern", OPT_NOINTERN, '-',
"Don't search certificates in message for signer"},
{"cades", OPT_DUP, '-', "Check signingCertificate (CAdES-BES)"},
{"verify_retcode", OPT_VERIFY_RETCODE, '-',
"Exit non-zero on verification failure"},
{"CAfile", OPT_CAFILE, '<', "Trusted certificates file"},
{"CApath", OPT_CAPATH, '/', "Trusted certificates directory"},
{"CAstore", OPT_CASTORE, ':', "Trusted certificates store URI"},
{"no-CAfile", OPT_NOCAFILE, '-',
"Do not load the default certificates file"},
{"no-CApath", OPT_NOCAPATH, '-',
"Do not load certificates from the default certificates directory"},
{"no-CAstore", OPT_NOCASTORE, '-',
"Do not load certificates from the default certificates store"},
OPT_SECTION("Output"),
{"keyid", OPT_KEYID, '-', "Use subject key identifier"},
{"econtent_type", OPT_ECONTENT_TYPE, 's', "OID for external content"},
{"text", OPT_TEXT, '-', "Include or delete text MIME headers"},
{"certsout", OPT_CERTSOUT, '>', "Certificate output file"},
{"to", OPT_TO, 's', "To address"},
{"from", OPT_FROM, 's', "From address"},
{"subject", OPT_SUBJECT, 's', "Subject"},
OPT_SECTION("Printing"),
{"noout", OPT_NOOUT, '-',
"For the -cmsout operation do not output the parsed CMS structure"},
{"print", OPT_PRINT, '-',
"For the -cmsout operation print out all fields of the CMS structure"},
{"nameopt", OPT_NAMEOPT, 's',
"For the -print option specifies various strings printing options"},
{"receipt_request_print", OPT_RR_PRINT, '-', "Print CMS Receipt Request" },
OPT_V_OPTIONS,
{NULL}
};
static CMS_ContentInfo *load_content_info(int informat, BIO *in, int flags,
BIO **indata, const char *name)
{
CMS_ContentInfo *ret, *ci;
ret = CMS_ContentInfo_new_ex(app_get0_libctx(), app_get0_propq());
if (ret == NULL) {
BIO_printf(bio_err, "Error allocating CMS_contentinfo\n");
return NULL;
}
switch (informat) {
case FORMAT_SMIME:
ci = SMIME_read_CMS_ex(in, flags, indata, &ret);
break;
case FORMAT_PEM:
ci = PEM_read_bio_CMS(in, &ret, NULL, NULL);
break;
case FORMAT_ASN1:
ci = d2i_CMS_bio(in, &ret);
break;
default:
BIO_printf(bio_err, "Bad input format for %s\n", name);
goto err;
}
if (ci == NULL) {
BIO_printf(bio_err, "Error reading %s Content Info\n", name);
goto err;
}
return ret;
err:
CMS_ContentInfo_free(ret);
return NULL;
}
int cms_main(int argc, char **argv)
{
CONF *conf = NULL;
ASN1_OBJECT *econtent_type = NULL;
BIO *in = NULL, *out = NULL, *indata = NULL, *rctin = NULL;
CMS_ContentInfo *cms = NULL, *rcms = NULL;
CMS_ReceiptRequest *rr = NULL;
ENGINE *e = NULL;
EVP_PKEY *key = NULL;
EVP_CIPHER *cipher = NULL, *wrap_cipher = NULL;
EVP_MD *sign_md = NULL;
STACK_OF(OPENSSL_STRING) *rr_to = NULL, *rr_from = NULL;
STACK_OF(OPENSSL_STRING) *sksigners = NULL, *skkeys = NULL;
STACK_OF(X509) *encerts = sk_X509_new_null(), *other = NULL;
X509 *cert = NULL, *recip = NULL, *signer = NULL, *originator = NULL;
X509_STORE *store = NULL;
X509_VERIFY_PARAM *vpm = X509_VERIFY_PARAM_new();
char *certfile = NULL, *keyfile = NULL, *contfile = NULL;
const char *CAfile = NULL, *CApath = NULL, *CAstore = NULL;
char *certsoutfile = NULL, *digestname = NULL, *wrapname = NULL;
int noCAfile = 0, noCApath = 0, noCAstore = 0;
char *digesthex = NULL;
unsigned char *digestbin = NULL;
long digestlen = 0;
char *infile = NULL, *outfile = NULL, *rctfile = NULL;
char *passinarg = NULL, *passin = NULL, *signerfile = NULL;
char *originatorfile = NULL, *recipfile = NULL, *ciphername = NULL;
char *to = NULL, *from = NULL, *subject = NULL, *prog;
cms_key_param *key_first = NULL, *key_param = NULL;
int flags = CMS_DETACHED, binary_files = 0;
int noout = 0, print = 0, keyidx = -1, vpmtouched = 0;
int informat = FORMAT_SMIME, outformat = FORMAT_SMIME;
int operation = 0, ret = 1, rr_print = 0, rr_allorfirst = -1;
int verify_retcode = 0, rctformat = FORMAT_SMIME, keyform = FORMAT_UNDEF;
size_t secret_keylen = 0, secret_keyidlen = 0;
unsigned char *pwri_pass = NULL, *pwri_tmp = NULL;
unsigned char *secret_key = NULL, *secret_keyid = NULL;
long ltmp;
const char *mime_eol = "\n";
OPTION_CHOICE o;
OSSL_LIB_CTX *libctx = app_get0_libctx();
if (encerts == NULL || vpm == NULL)
goto end;
opt_set_unknown_name("cipher");
prog = opt_init(argc, argv, cms_options);
while ((o = opt_next()) != OPT_EOF) {
switch (o) {
case OPT_EOF:
case OPT_ERR:
opthelp:
BIO_printf(bio_err, "%s: Use -help for summary.\n", prog);
goto end;
case OPT_HELP:
opt_help(cms_options);
ret = 0;
goto end;
case OPT_INFORM:
if (!opt_format(opt_arg(), OPT_FMT_PDS, &informat))
goto opthelp;
break;
case OPT_OUTFORM:
if (!opt_format(opt_arg(), OPT_FMT_PDS, &outformat))
goto opthelp;
break;
case OPT_OUT:
outfile = opt_arg();
break;
case OPT_ENCRYPT:
operation = SMIME_ENCRYPT;
break;
case OPT_DECRYPT:
operation = SMIME_DECRYPT;
break;
case OPT_SIGN:
operation = SMIME_SIGN;
break;
case OPT_VERIFY:
operation = SMIME_VERIFY;
break;
case OPT_RESIGN:
operation = SMIME_RESIGN;
break;
case OPT_SIGN_RECEIPT:
operation = SMIME_SIGN_RECEIPT;
break;
case OPT_VERIFY_RECEIPT:
operation = SMIME_VERIFY_RECEIPT;
rctfile = opt_arg();
break;
case OPT_VERIFY_RETCODE:
verify_retcode = 1;
break;
case OPT_DIGEST_CREATE:
operation = SMIME_DIGEST_CREATE;
break;
case OPT_DIGEST:
digesthex = opt_arg();
break;
case OPT_DIGEST_VERIFY:
operation = SMIME_DIGEST_VERIFY;
break;
case OPT_COMPRESS:
operation = SMIME_COMPRESS;
break;
case OPT_UNCOMPRESS:
operation = SMIME_UNCOMPRESS;
break;
case OPT_ED_ENCRYPT:
operation = SMIME_ENCRYPTED_ENCRYPT;
break;
case OPT_ED_DECRYPT:
operation = SMIME_ENCRYPTED_DECRYPT;
break;
case OPT_DATA_CREATE:
operation = SMIME_DATA_CREATE;
break;
case OPT_DATA_OUT:
operation = SMIME_DATA_OUT;
break;
case OPT_CMSOUT:
operation = SMIME_CMSOUT;
break;
case OPT_DEBUG_DECRYPT:
flags |= CMS_DEBUG_DECRYPT;
break;
case OPT_TEXT:
flags |= CMS_TEXT;
break;
case OPT_ASCIICRLF:
flags |= CMS_ASCIICRLF;
break;
case OPT_NOINTERN:
flags |= CMS_NOINTERN;
break;
case OPT_NOVERIFY:
flags |= CMS_NO_SIGNER_CERT_VERIFY;
break;
case OPT_NOCERTS:
flags |= CMS_NOCERTS;
break;
case OPT_NOATTR:
flags |= CMS_NOATTR;
break;
case OPT_NODETACH:
flags &= ~CMS_DETACHED;
break;
case OPT_NOSMIMECAP:
flags |= CMS_NOSMIMECAP;
break;
case OPT_BINARY:
flags |= CMS_BINARY;
break;
case OPT_CADES:
flags |= CMS_CADES;
break;
case OPT_KEYID:
flags |= CMS_USE_KEYID;
break;
case OPT_NOSIGS:
flags |= CMS_NOSIGS;
break;
case OPT_NO_CONTENT_VERIFY:
flags |= CMS_NO_CONTENT_VERIFY;
break;
case OPT_NO_ATTR_VERIFY:
flags |= CMS_NO_ATTR_VERIFY;
break;
case OPT_INDEF:
flags |= CMS_STREAM;
break;
case OPT_NOINDEF:
flags &= ~CMS_STREAM;
break;
case OPT_CRLFEOL:
mime_eol = "\r\n";
flags |= CMS_CRLFEOL;
break;
case OPT_NOOUT:
noout = 1;
break;
case OPT_RR_PRINT:
rr_print = 1;
break;
case OPT_RR_ALL:
rr_allorfirst = 0;
break;
case OPT_RR_FIRST:
rr_allorfirst = 1;
break;
case OPT_RCTFORM:
if (!opt_format(opt_arg(),
OPT_FMT_PEMDER | OPT_FMT_SMIME, &rctformat))
goto opthelp;
break;
case OPT_CERTFILE:
certfile = opt_arg();
break;
case OPT_CAFILE:
CAfile = opt_arg();
break;
case OPT_CAPATH:
CApath = opt_arg();
break;
case OPT_CASTORE:
CAstore = opt_arg();
break;
case OPT_NOCAFILE:
noCAfile = 1;
break;
case OPT_NOCAPATH:
noCApath = 1;
break;
case OPT_NOCASTORE:
noCAstore = 1;
break;
case OPT_IN:
infile = opt_arg();
break;
case OPT_CONTENT:
contfile = opt_arg();
break;
case OPT_RR_FROM:
if (rr_from == NULL
&& (rr_from = sk_OPENSSL_STRING_new_null()) == NULL)
goto end;
sk_OPENSSL_STRING_push(rr_from, opt_arg());
break;
case OPT_RR_TO:
if (rr_to == NULL
&& (rr_to = sk_OPENSSL_STRING_new_null()) == NULL)
goto end;
sk_OPENSSL_STRING_push(rr_to, opt_arg());
break;
case OPT_PRINT:
noout = print = 1;
break;
case OPT_NAMEOPT:
if (!set_nameopt(opt_arg()))
goto opthelp;
break;
case OPT_SECRETKEY:
if (secret_key != NULL) {
BIO_printf(bio_err, "Invalid key (supplied twice) %s\n",
opt_arg());
goto opthelp;
}
secret_key = OPENSSL_hexstr2buf(opt_arg(), <mp);
if (secret_key == NULL) {
BIO_printf(bio_err, "Invalid key %s\n", opt_arg());
goto end;
}
secret_keylen = (size_t)ltmp;
break;
case OPT_SECRETKEYID:
if (secret_keyid != NULL) {
BIO_printf(bio_err, "Invalid id (supplied twice) %s\n",
opt_arg());
goto opthelp;
}
secret_keyid = OPENSSL_hexstr2buf(opt_arg(), <mp);
if (secret_keyid == NULL) {
BIO_printf(bio_err, "Invalid id %s\n", opt_arg());
goto opthelp;
}
secret_keyidlen = (size_t)ltmp;
break;
case OPT_PWRI_PASSWORD:
pwri_pass = (unsigned char *)opt_arg();
break;
case OPT_ECONTENT_TYPE:
if (econtent_type != NULL) {
BIO_printf(bio_err, "Invalid OID (supplied twice) %s\n",
opt_arg());
goto opthelp;
}
econtent_type = OBJ_txt2obj(opt_arg(), 0);
if (econtent_type == NULL) {
BIO_printf(bio_err, "Invalid OID %s\n", opt_arg());
goto opthelp;
}
break;
case OPT_ENGINE:
e = setup_engine(opt_arg(), 0);
break;
case OPT_PASSIN:
passinarg = opt_arg();
break;
case OPT_TO:
to = opt_arg();
break;
case OPT_FROM:
from = opt_arg();
break;
case OPT_SUBJECT:
subject = opt_arg();
break;
case OPT_CERTSOUT:
certsoutfile = opt_arg();
break;
case OPT_MD:
digestname = opt_arg();
break;
case OPT_SIGNER:
/* If previous -signer argument add signer to list */
if (signerfile != NULL) {
if (sksigners == NULL
&& (sksigners = sk_OPENSSL_STRING_new_null()) == NULL)
goto end;
sk_OPENSSL_STRING_push(sksigners, signerfile);
if (keyfile == NULL)
keyfile = signerfile;
if (skkeys == NULL
&& (skkeys = sk_OPENSSL_STRING_new_null()) == NULL)
goto end;
sk_OPENSSL_STRING_push(skkeys, keyfile);
keyfile = NULL;
}
signerfile = opt_arg();
break;
case OPT_ORIGINATOR:
originatorfile = opt_arg();
break;
case OPT_INKEY:
/* If previous -inkey argument add signer to list */
if (keyfile != NULL) {
if (signerfile == NULL) {
BIO_puts(bio_err, "Illegal -inkey without -signer\n");
goto end;
}
if (sksigners == NULL
&& (sksigners = sk_OPENSSL_STRING_new_null()) == NULL)
goto end;
sk_OPENSSL_STRING_push(sksigners, signerfile);
signerfile = NULL;
if (skkeys == NULL
&& (skkeys = sk_OPENSSL_STRING_new_null()) == NULL)
goto end;
sk_OPENSSL_STRING_push(skkeys, keyfile);
}
keyfile = opt_arg();
break;
case OPT_KEYFORM:
if (!opt_format(opt_arg(), OPT_FMT_ANY, &keyform))
goto opthelp;
break;
case OPT_RECIP:
if (operation == SMIME_ENCRYPT) {
cert = load_cert(opt_arg(), FORMAT_UNDEF,
"recipient certificate file");
if (cert == NULL)
goto end;
sk_X509_push(encerts, cert);
cert = NULL;
} else {
recipfile = opt_arg();
}
break;
case OPT_CIPHER:
ciphername = opt_unknown();
break;
case OPT_KEYOPT:
keyidx = -1;
if (operation == SMIME_ENCRYPT) {
if (sk_X509_num(encerts) > 0)
keyidx += sk_X509_num(encerts);
} else {
if (keyfile != NULL || signerfile != NULL)
keyidx++;
if (skkeys != NULL)
keyidx += sk_OPENSSL_STRING_num(skkeys);
}
if (keyidx < 0) {
BIO_printf(bio_err, "No key specified\n");
goto opthelp;
}
if (key_param == NULL || key_param->idx != keyidx) {
cms_key_param *nparam;
nparam = app_malloc(sizeof(*nparam), "key param buffer");
if ((nparam->param = sk_OPENSSL_STRING_new_null()) == NULL) {
OPENSSL_free(nparam);
goto end;
}
nparam->idx = keyidx;
nparam->next = NULL;
if (key_first == NULL)
key_first = nparam;
else
key_param->next = nparam;
key_param = nparam;
}
sk_OPENSSL_STRING_push(key_param->param, opt_arg());
break;
case OPT_V_CASES:
if (!opt_verify(o, vpm))
goto end;
vpmtouched++;
break;
case OPT_R_CASES:
if (!opt_rand(o))
goto end;
break;
case OPT_PROV_CASES:
if (!opt_provider(o))
goto end;
break;
case OPT_CONFIG:
conf = app_load_config_modules(opt_arg());
if (conf == NULL)
goto end;
break;
case OPT_WRAP:
wrapname = opt_arg();
break;
case OPT_AES128_WRAP:
case OPT_AES192_WRAP:
case OPT_AES256_WRAP:
case OPT_3DES_WRAP:
wrapname = opt_flag() + 1;
break;
}
}
if (!app_RAND_load())
goto end;
if (digestname != NULL) {
if (!opt_md(digestname, &sign_md))
goto end;
}
if (!opt_cipher_any(ciphername, &cipher))
goto end;
if (wrapname != NULL) {
if (!opt_cipher_any(wrapname, &wrap_cipher))
goto end;
}
/* Remaining args are files to process. */
argc = opt_num_rest();
argv = opt_rest();
if ((rr_allorfirst != -1 || rr_from != NULL) && rr_to == NULL) {
BIO_puts(bio_err, "No Signed Receipts Recipients\n");
goto opthelp;
}
if (!(operation & SMIME_SIGNERS) && (rr_to != NULL || rr_from != NULL)) {
BIO_puts(bio_err, "Signed receipts only allowed with -sign\n");
goto opthelp;
}
if (!(operation & SMIME_SIGNERS) && (skkeys != NULL || sksigners != NULL)) {
BIO_puts(bio_err, "Multiple signers or keys not allowed\n");
goto opthelp;
}
if ((flags & CMS_CADES) != 0) {
if ((flags & CMS_NOATTR) != 0) {
BIO_puts(bio_err, "Incompatible options: "
"CAdES requires signed attributes\n");
goto opthelp;
}
if (operation == SMIME_VERIFY
&& (flags & (CMS_NO_SIGNER_CERT_VERIFY | CMS_NO_ATTR_VERIFY)) != 0) {
BIO_puts(bio_err, "Incompatible options: CAdES validation requires"
" certs and signed attributes validations\n");
goto opthelp;
}
}
if (operation & SMIME_SIGNERS) {
if (keyfile != NULL && signerfile == NULL) {
BIO_puts(bio_err, "Illegal -inkey without -signer\n");
goto opthelp;
}
/* Check to see if any final signer needs to be appended */
if (signerfile != NULL) {
if (sksigners == NULL
&& (sksigners = sk_OPENSSL_STRING_new_null()) == NULL)
goto end;
sk_OPENSSL_STRING_push(sksigners, signerfile);
if (skkeys == NULL && (skkeys = sk_OPENSSL_STRING_new_null()) == NULL)
goto end;
if (keyfile == NULL)
keyfile = signerfile;
sk_OPENSSL_STRING_push(skkeys, keyfile);
}
if (sksigners == NULL) {
BIO_printf(bio_err, "No signer certificate specified\n");
goto opthelp;
}
signerfile = NULL;
keyfile = NULL;
} else if (operation == SMIME_DECRYPT) {
if (recipfile == NULL && keyfile == NULL
&& secret_key == NULL && pwri_pass == NULL) {
BIO_printf(bio_err,
"No recipient certificate or key specified\n");
goto opthelp;
}
} else if (operation == SMIME_ENCRYPT) {
if (*argv == NULL && secret_key == NULL
&& pwri_pass == NULL && sk_X509_num(encerts) <= 0) {
BIO_printf(bio_err, "No recipient(s) certificate(s) specified\n");
goto opthelp;
}
} else if (!operation) {
BIO_printf(bio_err, "No operation option (-encrypt|-decrypt|-sign|-verify|...) specified.\n");
goto opthelp;
}
if (!app_passwd(passinarg, NULL, &passin, NULL)) {
BIO_printf(bio_err, "Error getting password\n");
goto end;
}
ret = 2;
if ((operation & SMIME_SIGNERS) == 0) {
if ((flags & CMS_DETACHED) == 0)
BIO_printf(bio_err,
"Warning: -nodetach option is ignored for non-signing operation\n");
flags &= ~CMS_DETACHED;
}
if ((operation & SMIME_IP) == 0 && contfile != NULL)
BIO_printf(bio_err,
"Warning: -contfile option is ignored for the given operation\n");
if (operation != SMIME_ENCRYPT && *argv != NULL)
BIO_printf(bio_err,
"Warning: recipient certificate file parameters ignored for operation other than -encrypt\n");
if ((flags & CMS_BINARY) != 0) {
if (!(operation & SMIME_OP))
outformat = FORMAT_BINARY;
if (!(operation & SMIME_IP))
informat = FORMAT_BINARY;
if ((operation & SMIME_SIGNERS) != 0 && (flags & CMS_DETACHED) != 0)
binary_files = 1;
if ((operation & SMIME_IP) != 0 && contfile == NULL)
binary_files = 1;
}
if (operation == SMIME_ENCRYPT) {
if (!cipher) {
#ifndef OPENSSL_NO_DES
cipher = (EVP_CIPHER *)EVP_des_ede3_cbc();
#else
BIO_printf(bio_err, "No cipher selected\n");
goto end;
#endif
}
if (secret_key && !secret_keyid) {
BIO_printf(bio_err, "No secret key id\n");
goto end;
}
for (; *argv != NULL; argv++) {
cert = load_cert(*argv, FORMAT_UNDEF,
"recipient certificate file");
if (cert == NULL)
goto end;
sk_X509_push(encerts, cert);
cert = NULL;
}
}
if (certfile != NULL) {
if (!load_certs(certfile, 0, &other, NULL, "certificate file")) {
ERR_print_errors(bio_err);
goto end;
}
}
if (recipfile != NULL && (operation == SMIME_DECRYPT)) {
if ((recip = load_cert(recipfile, FORMAT_UNDEF,
"recipient certificate file")) == NULL) {
ERR_print_errors(bio_err);
goto end;
}
}
if (originatorfile != NULL) {
if ((originator = load_cert(originatorfile, FORMAT_UNDEF,
"originator certificate file")) == NULL) {
ERR_print_errors(bio_err);
goto end;
}
}
if (operation == SMIME_SIGN_RECEIPT) {
if ((signer = load_cert(signerfile, FORMAT_UNDEF,
"receipt signer certificate file")) == NULL) {
ERR_print_errors(bio_err);
goto end;
}
}
if ((operation == SMIME_DECRYPT) || (operation == SMIME_ENCRYPT)) {
if (keyfile == NULL)
keyfile = recipfile;
} else if ((operation == SMIME_SIGN) || (operation == SMIME_SIGN_RECEIPT)) {
if (keyfile == NULL)
keyfile = signerfile;
} else {
keyfile = NULL;
}
if (keyfile != NULL) {
key = load_key(keyfile, keyform, 0, passin, e, "signing key");
if (key == NULL)
goto end;
}
if (digesthex != NULL) {
if (operation != SMIME_SIGN) {
BIO_printf(bio_err,
"Cannot use -digest for non-signing operation\n");
goto end;
}
if (infile != NULL
|| (flags & CMS_DETACHED) == 0
|| (flags & CMS_STREAM) != 0) {
BIO_printf(bio_err,
"Cannot use -digest when -in, -nodetach or streaming is used\n");
goto end;
}
digestbin = OPENSSL_hexstr2buf(digesthex, &digestlen);
if (digestbin == NULL) {
BIO_printf(bio_err,
"Invalid hex value after -digest\n");
goto end;
}
} else {
in = bio_open_default(infile, 'r',
binary_files ? FORMAT_BINARY : informat);
if (in == NULL)
goto end;
}
if (operation & SMIME_IP) {
cms = load_content_info(informat, in, flags, &indata, "SMIME");
if (cms == NULL)
goto end;
if (contfile != NULL) {
BIO_free(indata);
if ((indata = BIO_new_file(contfile, "rb")) == NULL) {
BIO_printf(bio_err, "Can't read content file %s\n", contfile);
goto end;
}
}
if (certsoutfile != NULL) {
STACK_OF(X509) *allcerts;
allcerts = CMS_get1_certs(cms);
if (!save_certs(certsoutfile, allcerts)) {
BIO_printf(bio_err,
"Error writing certs to %s\n", certsoutfile);
ret = 5;
goto end;
}
OSSL_STACK_OF_X509_free(allcerts);
}
}
if (rctfile != NULL) {
char *rctmode = (rctformat == FORMAT_ASN1) ? "rb" : "r";
if ((rctin = BIO_new_file(rctfile, rctmode)) == NULL) {
BIO_printf(bio_err, "Can't open receipt file %s\n", rctfile);
goto end;
}
rcms = load_content_info(rctformat, rctin, 0, NULL, "receipt");
if (rcms == NULL)
goto end;
}
out = bio_open_default(outfile, 'w',
binary_files ? FORMAT_BINARY : outformat);
if (out == NULL)
goto end;
if ((operation == SMIME_VERIFY) || (operation == SMIME_VERIFY_RECEIPT)) {
if ((store = setup_verify(CAfile, noCAfile, CApath, noCApath,
CAstore, noCAstore)) == NULL)
goto end;
X509_STORE_set_verify_cb(store, cms_cb);
if (vpmtouched)
X509_STORE_set1_param(store, vpm);
}
ret = 3;
if (operation == SMIME_DATA_CREATE) {
cms = CMS_data_create_ex(in, flags, libctx, app_get0_propq());
} else if (operation == SMIME_DIGEST_CREATE) {
cms = CMS_digest_create_ex(in, sign_md, flags, libctx, app_get0_propq());
} else if (operation == SMIME_COMPRESS) {
cms = CMS_compress(in, -1, flags);
} else if (operation == SMIME_ENCRYPT) {
int i;
flags |= CMS_PARTIAL;
cms = CMS_encrypt_ex(NULL, in, cipher, flags, libctx, app_get0_propq());
if (cms == NULL)
goto end;
for (i = 0; i < sk_X509_num(encerts); i++) {
CMS_RecipientInfo *ri;
cms_key_param *kparam;
int tflags = flags | CMS_KEY_PARAM;
/* This flag enforces allocating the EVP_PKEY_CTX for the recipient here */
EVP_PKEY_CTX *pctx;
X509 *x = sk_X509_value(encerts, i);
int res;
for (kparam = key_first; kparam; kparam = kparam->next) {
if (kparam->idx == i) {
break;
}
}
ri = CMS_add1_recipient(cms, x, key, originator, tflags);
if (ri == NULL)
goto end;