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IABSD.fr/src/usr.bin/openssl/cms.c
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- usr.bin/openssl/cms.c
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/* $OpenBSD: cms.c,v 1.17 2020/01/04 14:17:55 inoguchi 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 int cms_cb(int ok, X509_STORE_CTX *ctx); 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; }; int cms_main(int argc, char **argv) { int operation = 0; int ret = 0; char **args; const char *inmode = "r", *outmode = "w"; char *infile = NULL, *outfile = NULL, *rctfile = NULL; char *signerfile = NULL, *recipfile = NULL; STACK_OF(OPENSSL_STRING) *sksigners = NULL, *skkeys = NULL; char *certfile = NULL, *keyfile = NULL, *contfile = NULL; char *certsoutfile = NULL; const EVP_CIPHER *cipher = NULL; CMS_ContentInfo *cms = NULL, *rcms = NULL; X509_STORE *store = NULL; X509 *cert = NULL, *recip = NULL, *signer = NULL; EVP_PKEY *key = NULL; STACK_OF(X509) *encerts = NULL, *other = NULL; BIO *in = NULL, *out = NULL, *indata = NULL, *rctin = NULL; int badarg = 0; int flags = CMS_DETACHED, noout = 0, print = 0; int verify_retcode = 0; int rr_print = 0, rr_allorfirst = -1; STACK_OF(OPENSSL_STRING) *rr_to = NULL, *rr_from = NULL; CMS_ReceiptRequest *rr = NULL; char *to = NULL, *from = NULL, *subject = NULL; char *CAfile = NULL, *CApath = NULL; char *passargin = NULL, *passin = NULL; const EVP_MD *sign_md = NULL; int informat = FORMAT_SMIME, outformat = FORMAT_SMIME; int rctformat = FORMAT_SMIME, keyform = FORMAT_PEM; unsigned char *secret_key = NULL, *secret_keyid = NULL; unsigned char *pwri_pass = NULL, *pwri_tmp = NULL; size_t secret_keylen = 0, secret_keyidlen = 0; struct cms_key_param *key_first = NULL, *key_param = NULL; ASN1_OBJECT *econtent_type = NULL; X509_VERIFY_PARAM *vpm = NULL; if (single_execution) { if (pledge("stdio rpath wpath cpath tty", NULL) == -1) { perror("pledge"); exit(1); } } args = argv + 1; ret = 1; while (!badarg && *args && *args[0] == '-') { if (!strcmp(*args, "-encrypt")) operation = SMIME_ENCRYPT; else if (!strcmp(*args, "-decrypt")) operation = SMIME_DECRYPT; else if (!strcmp(*args, "-sign")) operation = SMIME_SIGN; else if (!strcmp(*args, "-sign_receipt")) operation = SMIME_SIGN_RECEIPT; else if (!strcmp(*args, "-resign")) operation = SMIME_RESIGN; else if (!strcmp(*args, "-verify")) operation = SMIME_VERIFY; else if (!strcmp(*args, "-verify_retcode")) verify_retcode = 1; else if (!strcmp(*args, "-verify_receipt")) { operation = SMIME_VERIFY_RECEIPT; if (!args[1]) goto argerr; args++; rctfile = *args; } else if (!strcmp(*args, "-cmsout")) operation = SMIME_CMSOUT; else if (!strcmp(*args, "-data_out")) operation = SMIME_DATAOUT; else if (!strcmp(*args, "-data_create")) operation = SMIME_DATA_CREATE; else if (!strcmp(*args, "-digest_verify")) operation = SMIME_DIGEST_VERIFY; else if (!strcmp(*args, "-digest_create")) operation = SMIME_DIGEST_CREATE; else if (!strcmp(*args, "-compress")) operation = SMIME_COMPRESS; else if (!strcmp(*args, "-uncompress")) operation = SMIME_UNCOMPRESS; else if (!strcmp(*args, "-EncryptedData_decrypt")) operation = SMIME_ENCRYPTED_DECRYPT; else if (!strcmp(*args, "-EncryptedData_encrypt")) operation = SMIME_ENCRYPTED_ENCRYPT; #ifndef OPENSSL_NO_DES else if (!strcmp(*args, "-des3")) cipher = EVP_des_ede3_cbc(); else if (!strcmp(*args, "-des")) cipher = EVP_des_cbc(); #endif #ifndef OPENSSL_NO_RC2 else if (!strcmp(*args, "-rc2-40")) cipher = EVP_rc2_40_cbc(); else if (!strcmp(*args, "-rc2-128")) cipher = EVP_rc2_cbc(); else if (!strcmp(*args, "-rc2-64")) cipher = EVP_rc2_64_cbc(); #endif #ifndef OPENSSL_NO_AES else if (!strcmp(*args, "-aes128")) cipher = EVP_aes_128_cbc(); else if (!strcmp(*args, "-aes192")) cipher = EVP_aes_192_cbc(); else if (!strcmp(*args, "-aes256")) cipher = EVP_aes_256_cbc(); #endif #ifndef OPENSSL_NO_CAMELLIA else if (!strcmp(*args, "-camellia128")) cipher = EVP_camellia_128_cbc(); else if (!strcmp(*args, "-camellia192")) cipher = EVP_camellia_192_cbc(); else if (!strcmp(*args, "-camellia256")) cipher = EVP_camellia_256_cbc(); #endif else if (!strcmp(*args, "-debug_decrypt")) flags |= CMS_DEBUG_DECRYPT; else if (!strcmp(*args, "-text")) flags |= CMS_TEXT; else if (!strcmp(*args, "-nointern")) flags |= CMS_NOINTERN; else if (!strcmp(*args, "-noverify") || !strcmp(*args, "-no_signer_cert_verify")) flags |= CMS_NO_SIGNER_CERT_VERIFY; else if (!strcmp(*args, "-nocerts")) flags |= CMS_NOCERTS; else if (!strcmp(*args, "-noattr")) flags |= CMS_NOATTR; else if (!strcmp(*args, "-nodetach")) flags &= ~CMS_DETACHED; else if (!strcmp(*args, "-nosmimecap")) flags |= CMS_NOSMIMECAP; else if (!strcmp(*args, "-binary")) flags |= CMS_BINARY; else if (!strcmp(*args, "-keyid")) flags |= CMS_USE_KEYID; else if (!strcmp(*args, "-nosigs")) flags |= CMS_NOSIGS; else if (!strcmp(*args, "-no_content_verify")) flags |= CMS_NO_CONTENT_VERIFY; else if (!strcmp(*args, "-no_attr_verify")) flags |= CMS_NO_ATTR_VERIFY; else if (!strcmp(*args, "-stream")) flags |= CMS_STREAM; else if (!strcmp(*args, "-indef")) flags |= CMS_STREAM; else if (!strcmp(*args, "-noindef")) flags &= ~CMS_STREAM; else if (!strcmp(*args, "-nooldmime")) flags |= CMS_NOOLDMIMETYPE; else if (!strcmp(*args, "-crlfeol")) flags |= CMS_CRLFEOL; else if (!strcmp(*args, "-noout")) noout = 1; else if (!strcmp(*args, "-receipt_request_print")) rr_print = 1; else if (!strcmp(*args, "-receipt_request_all")) rr_allorfirst = 0; else if (!strcmp(*args, "-receipt_request_first")) rr_allorfirst = 1; else if (!strcmp(*args, "-receipt_request_from")) { if (!args[1]) goto argerr; args++; if (rr_from == NULL && (rr_from = sk_OPENSSL_STRING_new_null()) == NULL) goto end; if (!sk_OPENSSL_STRING_push(rr_from, *args)) goto end; } else if (!strcmp(*args, "-receipt_request_to")) { if (!args[1]) goto argerr; args++; if (rr_to == NULL && (rr_to = sk_OPENSSL_STRING_new_null()) == NULL) goto end; if (!sk_OPENSSL_STRING_push(rr_to, *args)) goto end; } else if (!strcmp(*args, "-print")) { noout = 1; print = 1; } else if (!strcmp(*args, "-secretkey")) { long ltmp; if (!args[1]) goto argerr; args++; secret_key = string_to_hex(*args, <mp); if (!secret_key) { BIO_printf(bio_err, "Invalid key %s\n", *args); goto argerr; } secret_keylen = (size_t) ltmp; } else if (!strcmp(*args, "-secretkeyid")) { long ltmp; if (!args[1]) goto argerr; args++; secret_keyid = string_to_hex(*args, <mp); if (!secret_keyid) { BIO_printf(bio_err, "Invalid id %s\n", *args); goto argerr; } secret_keyidlen = (size_t) ltmp; } else if (!strcmp(*args, "-pwri_password")) { if (!args[1]) goto argerr; args++; pwri_pass = (unsigned char *) *args; } else if (!strcmp(*args, "-econtent_type")) { if (!args[1]) goto argerr; args++; econtent_type = OBJ_txt2obj(*args, 0); if (!econtent_type) { BIO_printf(bio_err, "Invalid OID %s\n", *args); goto argerr; } } else if (!strcmp(*args, "-passin")) { if (!args[1]) goto argerr; passargin = *++args; } else if (!strcmp(*args, "-to")) { if (!args[1]) goto argerr; to = *++args; } else if (!strcmp(*args, "-from")) { if (!args[1]) goto argerr; from = *++args; } else if (!strcmp(*args, "-subject")) { if (!args[1]) goto argerr; subject = *++args; } else if (!strcmp(*args, "-signer")) { if (!args[1]) goto argerr; /* If previous -signer argument add signer to list */ if (signerfile) { if (sksigners == NULL && (sksigners = sk_OPENSSL_STRING_new_null()) == NULL) goto end; if (!sk_OPENSSL_STRING_push(sksigners, signerfile)) goto end; if (!keyfile) keyfile = signerfile; if (skkeys == NULL && (skkeys = sk_OPENSSL_STRING_new_null()) == NULL) goto end; if (!sk_OPENSSL_STRING_push(skkeys, keyfile)) goto end; keyfile = NULL; } signerfile = *++args; } else if (!strcmp(*args, "-recip")) { if (!args[1]) goto argerr; if (operation == SMIME_ENCRYPT) { if (encerts == NULL && (encerts = sk_X509_new_null()) == NULL) goto end; cert = load_cert(bio_err, *++args, FORMAT_PEM, NULL, "recipient certificate file"); if (cert == NULL) goto end; if (!sk_X509_push(encerts, cert)) goto end; cert = NULL; } else { recipfile = *++args; } } else if (!strcmp(*args, "-certsout")) { if (!args[1]) goto argerr; certsoutfile = *++args; } else if (!strcmp(*args, "-md")) { if (!args[1]) goto argerr; sign_md = EVP_get_digestbyname(*++args); if (sign_md == NULL) { BIO_printf(bio_err, "Unknown digest %s\n", *args); goto argerr; } } else if (!strcmp(*args, "-inkey")) { if (!args[1]) goto argerr; /* If previous -inkey arument add signer to list */ if (keyfile) { if (!signerfile) { BIO_puts(bio_err, "Illegal -inkey without -signer\n"); goto argerr; } if (sksigners == NULL && (sksigners = sk_OPENSSL_STRING_new_null()) == NULL) goto end; if (!sk_OPENSSL_STRING_push(sksigners, signerfile)) goto end; signerfile = NULL; if (skkeys == NULL && (skkeys = sk_OPENSSL_STRING_new_null()) == NULL) goto end; if (!sk_OPENSSL_STRING_push(skkeys, keyfile)) goto end; } keyfile = *++args; } else if (!strcmp(*args, "-keyform")) { if (!args[1]) goto argerr; keyform = str2fmt(*++args); } else if (!strcmp (*args, "-keyopt")) { int keyidx = -1; if (!args[1]) goto argerr; if (operation == SMIME_ENCRYPT) { if (encerts != NULL) 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 argerr; } if (key_param == NULL || key_param->idx != keyidx) { struct cms_key_param *nparam; if ((nparam = malloc(sizeof(struct cms_key_param))) == NULL) goto end; nparam->idx = keyidx; if ((nparam->param = sk_OPENSSL_STRING_new_null()) == NULL) goto end; nparam->next = NULL; if (key_first == NULL) key_first = nparam; else key_param->next = nparam; key_param = nparam; } if (!sk_OPENSSL_STRING_push(key_param->param, *++args)) goto end; } else if (!strcmp(*args, "-rctform")) { if (!args[1]) goto argerr; rctformat = str2fmt(*++args); } else if (!strcmp(*args, "-certfile")) { if (!args[1]) goto argerr; certfile = *++args; } else if (!strcmp(*args, "-CAfile")) { if (!args[1]) goto argerr; CAfile = *++args; } else if (!strcmp(*args, "-CApath")) { if (!args[1]) goto argerr; CApath = *++args; } else if (!strcmp(*args, "-in")) { if (!args[1]) goto argerr; infile = *++args; } else if (!strcmp(*args, "-inform")) { if (!args[1]) goto argerr; informat = str2fmt(*++args); } else if (!strcmp(*args, "-outform")) { if (!args[1]) goto argerr; outformat = str2fmt(*++args); } else if (!strcmp(*args, "-out")) { if (!args[1]) goto argerr; outfile = *++args; } else if (!strcmp(*args, "-content")) { if (!args[1]) goto argerr; contfile = *++args; } else if (args_verify(&args, NULL, &badarg, bio_err, &vpm)) continue; else if ((cipher = EVP_get_cipherbyname(*args + 1)) == NULL) badarg = 1; args++; } if (((rr_allorfirst != -1) || rr_from) && !rr_to) { BIO_puts(bio_err, "No Signed Receipts Recipients\n"); goto argerr; } if (!(operation & SMIME_SIGNERS) && (rr_to || rr_from)) { BIO_puts(bio_err, "Signed receipts only allowed with -sign\n"); goto argerr; } if (!(operation & SMIME_SIGNERS) && (skkeys || sksigners)) { BIO_puts(bio_err, "Multiple signers or keys not allowed\n"); goto argerr; } if (operation & SMIME_SIGNERS) { if (keyfile && !signerfile) { BIO_puts(bio_err, "Illegal -inkey without -signer\n"); goto argerr; } /* Check to see if any final signer needs to be appended */ if (signerfile) { if (sksigners == NULL && (sksigners = sk_OPENSSL_STRING_new_null()) == NULL) goto end; if (!sk_OPENSSL_STRING_push(sksigners, signerfile)) goto end; if (skkeys == NULL && (skkeys = sk_OPENSSL_STRING_new_null()) == NULL) goto end; if (!keyfile) keyfile = signerfile; if (!sk_OPENSSL_STRING_push(skkeys, keyfile)) goto end; } if (!sksigners) { BIO_printf(bio_err, "No signer certificate specified\n"); badarg = 1; } signerfile = NULL; keyfile = NULL; } else if (operation == SMIME_DECRYPT) { if (!recipfile && !keyfile && !secret_key && !pwri_pass) { BIO_printf(bio_err, "No recipient certificate or key specified\n"); badarg = 1; } } else if (operation == SMIME_ENCRYPT) { if (!*args && !secret_key && !pwri_pass && !encerts) { BIO_printf(bio_err, "No recipient(s) certificate(s) specified\n"); badarg = 1; } } else if (!operation) badarg = 1; if (badarg) { argerr: BIO_printf(bio_err, "Usage cms [options] cert.pem ...\n"); BIO_printf(bio_err, "where options are\n"); BIO_printf(bio_err, "-encrypt encrypt message\n"); BIO_printf(bio_err, "-decrypt decrypt encrypted message\n"); BIO_printf(bio_err, "-sign sign message\n"); BIO_printf(bio_err, "-verify verify signed message\n"); BIO_printf(bio_err, "-cmsout output CMS structure\n"); #ifndef OPENSSL_NO_DES BIO_printf(bio_err, "-des3 encrypt with triple DES\n"); BIO_printf(bio_err, "-des encrypt with DES\n"); #endif #ifndef OPENSSL_NO_RC2 BIO_printf(bio_err, "-rc2-40 encrypt with RC2-40 (default)\n"); BIO_printf(bio_err, "-rc2-64 encrypt with RC2-64\n"); BIO_printf(bio_err, "-rc2-128 encrypt with RC2-128\n"); #endif #ifndef OPENSSL_NO_AES BIO_printf(bio_err, "-aes128, -aes192, -aes256\n"); BIO_printf(bio_err, " encrypt PEM output with cbc aes\n"); #endif #ifndef OPENSSL_NO_CAMELLIA BIO_printf(bio_err, "-camellia128, -camellia192, -camellia256\n"); BIO_printf(bio_err, " encrypt PEM output with cbc camellia\n"); #endif BIO_printf(bio_err, "-nointern don't search certificates in message for signer\n"); BIO_printf(bio_err, "-nosigs don't verify message signature\n"); BIO_printf(bio_err, "-noverify don't verify signers certificate\n"); BIO_printf(bio_err, "-nocerts don't include signers certificate when signing\n"); BIO_printf(bio_err, "-nodetach use opaque signing\n"); BIO_printf(bio_err, "-noattr don't include any signed attributes\n"); BIO_printf(bio_err, "-binary don't translate message to text\n"); BIO_printf(bio_err, "-certfile file other certificates file\n"); BIO_printf(bio_err, "-certsout file certificate output file\n"); BIO_printf(bio_err, "-signer file signer certificate file\n"); BIO_printf(bio_err, "-recip file recipient certificate file for decryption\n"); BIO_printf(bio_err, "-keyid use subject key identifier\n"); BIO_printf(bio_err, "-in file input file\n"); BIO_printf(bio_err, "-inform arg input format SMIME (default), PEM or DER\n"); BIO_printf(bio_err, "-inkey file input private key (if not signer or recipient)\n"); BIO_printf(bio_err, "-keyform arg input private key format (PEM)\n"); BIO_printf(bio_err, "-keyopt nm:v set public key parameters\n"); BIO_printf(bio_err, "-out file output file\n"); BIO_printf(bio_err, "-outform arg output format SMIME (default), PEM or DER\n"); BIO_printf(bio_err, "-content file supply or override content for detached signature\n"); BIO_printf(bio_err, "-to addr to address\n"); BIO_printf(bio_err, "-from ad from address\n"); BIO_printf(bio_err, "-subject s subject\n"); BIO_printf(bio_err, "-text include or delete text MIME headers\n"); BIO_printf(bio_err, "-CApath dir trusted certificates directory\n"); BIO_printf(bio_err, "-CAfile file trusted certificates file\n"); BIO_printf(bio_err, "-crl_check check revocation status of signer's certificate using CRLs\n"); BIO_printf(bio_err, "-crl_check_all check revocation status of signer's certificate chain using CRLs\n"); BIO_printf(bio_err, "-passin arg input file pass phrase source\n"); BIO_printf(bio_err, "cert.pem recipient certificate(s) for encryption\n"); goto end; } if (!app_passwd(bio_err, passargin, NULL, &passin, NULL)) { BIO_printf(bio_err, "Error getting password\n"); goto end; } ret = 2; if (!(operation & SMIME_SIGNERS)) flags &= ~CMS_DETACHED; if (operation & SMIME_OP) { if (outformat == FORMAT_ASN1) outmode = "wb"; } else { if (flags & CMS_BINARY) outmode = "wb"; } if (operation & SMIME_IP) { if (informat == FORMAT_ASN1) inmode = "rb"; } else { if (flags & CMS_BINARY) inmode = "rb"; } if (operation == SMIME_ENCRYPT) { if (!cipher) { #ifndef OPENSSL_NO_DES 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; } if (*args && encerts == NULL) if ((encerts = sk_X509_new_null()) == NULL) goto end; while (*args) { if (!(cert = load_cert(bio_err, *args, FORMAT_PEM, NULL, "recipient certificate file"))) goto end; if (!sk_X509_push(encerts, cert)) goto end; cert = NULL; args++; } } if (certfile) { if (!(other = load_certs(bio_err, certfile, FORMAT_PEM, NULL, "certificate file"))) { ERR_print_errors(bio_err); goto end; } } if (recipfile && (operation == SMIME_DECRYPT)) { if (!(recip = load_cert(bio_err, recipfile, FORMAT_PEM, NULL, "recipient certificate file"))) { ERR_print_errors(bio_err); goto end; } } if (operation == SMIME_SIGN_RECEIPT) { if (!(signer = load_cert(bio_err, signerfile, FORMAT_PEM, NULL, "receipt signer certificate file"))) { ERR_print_errors(bio_err); goto end; } } if (operation == SMIME_DECRYPT) { if (!keyfile) keyfile = recipfile; } else if ((operation == SMIME_SIGN) || (operation == SMIME_SIGN_RECEIPT)) { if (!keyfile) keyfile = signerfile; } else keyfile = NULL; if (keyfile) { key = load_key(bio_err, keyfile, keyform, 0, passin, "signing key file"); if (!key) goto end; } if (infile) { if (!(in = BIO_new_file(infile, inmode))) { BIO_printf(bio_err, "Can't open input file %s\n", infile); goto end; } } else in = BIO_new_fp(stdin, BIO_NOCLOSE); if (operation & SMIME_IP) { if (informat == FORMAT_SMIME) cms = SMIME_read_CMS(in, &indata); else if (informat == FORMAT_PEM) cms = PEM_read_bio_CMS(in, NULL, NULL, NULL); else if (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) { BIO_printf(bio_err, "Error reading S/MIME message\n"); goto end; } if (contfile) { BIO_free(indata); if (!(indata = BIO_new_file(contfile, "rb"))) { BIO_printf(bio_err, "Can't read content file %s\n", contfile); goto end; } } if (certsoutfile) { STACK_OF(X509) *allcerts; if ((allcerts = CMS_get1_certs(cms)) == NULL) goto end; if (!save_certs(certsoutfile, allcerts)) { BIO_printf(bio_err, "Error writing certs to %s\n", certsoutfile); ret = 5; goto end; } sk_X509_pop_free(allcerts, X509_free); } } if (rctfile) { char *rctmode = (rctformat == FORMAT_ASN1) ? "rb" : "r"; if (!(rctin = BIO_new_file(rctfile, rctmode))) { BIO_printf(bio_err, "Can't open receipt file %s\n", rctfile); goto end; } if (rctformat == FORMAT_SMIME) rcms = SMIME_read_CMS(rctin, NULL); else if (rctformat == FORMAT_PEM) rcms = PEM_read_bio_CMS(rctin, NULL, NULL, NULL); else if (rctformat == FORMAT_ASN1) rcms = d2i_CMS_bio(rctin, NULL); else { BIO_printf(bio_err, "Bad input format for receipt\n"); goto end; } if (!rcms) { BIO_printf(bio_err, "Error reading receipt\n"); goto end; } } if (outfile) { if (!(out = BIO_new_file(outfile, outmode))) { BIO_printf(bio_err, "Can't open output file %s\n", outfile); goto end; } } else { out = BIO_new_fp(stdout, BIO_NOCLOSE); } if ((operation == SMIME_VERIFY) || (operation == SMIME_VERIFY_RECEIPT)) { if (!(store = setup_verify(bio_err, CAfile, CApath))) goto end; X509_STORE_set_verify_cb(store, cms_cb); if (vpm) X509_STORE_set1_param(store, vpm); } ret = 3; if (operation == SMIME_DATA_CREATE) { cms = CMS_data_create(in, flags); } else if (operation == SMIME_DIGEST_CREATE) { cms = CMS_digest_create(in, sign_md, flags); } else if (operation == SMIME_COMPRESS) { cms = CMS_compress(in, -1, flags); } else if (operation == SMIME_ENCRYPT) { int i; flags |= CMS_PARTIAL; cms = CMS_encrypt(NULL, in, cipher, flags); if (cms == NULL) goto end; for (i = 0; i < sk_X509_num(encerts); i++) { CMS_RecipientInfo *ri; struct cms_key_param *kparam; int tflags = flags; X509 *x = sk_X509_value(encerts, i); for (kparam = key_first; kparam; 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 (secret_key) { if (!CMS_add0_recipient_key(cms, NID_undef, secret_key, secret_keylen, secret_keyid, secret_keyidlen, NULL, NULL, NULL)) goto end; /* NULL these because call absorbs them */ secret_key = NULL; secret_keyid = NULL; } if (pwri_pass) { pwri_tmp = strdup(pwri_pass); if (!pwri_tmp) goto end; if (!CMS_add0_recipient_password(cms, -1, NID_undef, NID_undef, pwri_tmp, -1, NULL)) goto end; pwri_tmp = NULL; } if (!(flags & CMS_STREAM)) { if (!CMS_final(cms, in, NULL, flags)) goto end; } } else if (operation == SMIME_ENCRYPTED_ENCRYPT) { cms = CMS_EncryptedData_encrypt(in, cipher, secret_key, secret_keylen, flags); } else if (operation == SMIME_SIGN_RECEIPT) { CMS_ContentInfo *srcms = NULL; STACK_OF(CMS_SignerInfo) *sis; CMS_SignerInfo *si; sis = CMS_get0_SignerInfos(cms); if (!sis) goto end; si = sk_CMS_SignerInfo_value(sis, 0); srcms = CMS_sign_receipt(si, signer, key, other, flags); if (!srcms) goto end; CMS_ContentInfo_free(cms); cms = srcms; } else if (operation & SMIME_SIGNERS) { int i; /* * If detached data content we enable streaming if S/MIME * output format. */ if (operation == SMIME_SIGN) { if (flags & CMS_DETACHED) { if (outformat == FORMAT_SMIME) flags |= CMS_STREAM; } flags |= CMS_PARTIAL; cms = CMS_sign(NULL, NULL, other, in, flags); if (!cms) goto end; if (econtent_type) if (!CMS_set1_eContentType(cms, econtent_type)) goto end; if (rr_to) { rr = make_receipt_request(rr_to, rr_allorfirst, rr_from); if (!rr) { BIO_puts(bio_err, "Signed Receipt Request Creation Error\n"); goto end; } } } else flags |= CMS_REUSE_DIGEST; for (i = 0; i < sk_OPENSSL_STRING_num(sksigners); i++) { CMS_SignerInfo *si; struct cms_key_param *kparam; int tflags = flags; signerfile = sk_OPENSSL_STRING_value(sksigners, i); keyfile = sk_OPENSSL_STRING_value(skkeys, i); signer = load_cert(bio_err, signerfile, FORMAT_PEM, NULL, "signer certificate"); if (!signer) goto end; key = load_key(bio_err, keyfile, keyform, 0, passin, "signing key file"); if (!key) goto end; for (kparam = key_first; kparam; kparam = kparam->next) { if (kparam->idx == i) { tflags |= CMS_KEY_PARAM; break; } } si = CMS_add1_signer(cms, signer, key, 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 && !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 ((operation == SMIME_SIGN) && !(flags & CMS_STREAM)) { if (!CMS_final(cms, in, NULL, flags)) goto end; } } if (!cms) { BIO_printf(bio_err, "Error creating CMS structure\n"); goto end; } ret = 4; if (operation == SMIME_DECRYPT) { if (flags & CMS_DEBUG_DECRYPT) CMS_decrypt(cms, NULL, NULL, NULL, NULL, flags); if (secret_key) { if (!CMS_decrypt_set1_key(cms, secret_key, secret_keylen, secret_keyid, secret_keyidlen)) { BIO_puts(bio_err, "Error decrypting CMS using secret key\n"); goto end; } } if (key) { if (!CMS_decrypt_set1_pkey(cms, key, recip)) { BIO_puts(bio_err, "Error decrypting CMS using private key\n"); goto end; } } if (pwri_pass) { if (!CMS_decrypt_set1_password(cms, pwri_pass, -1)) { BIO_puts(bio_err, "Error decrypting CMS using password\n"); goto end; } } if (!CMS_decrypt(cms, NULL, NULL, indata, out, flags)) { BIO_printf(bio_err, "Error decrypting CMS structure\n"); goto end; } } else if (operation == SMIME_DATAOUT) { if (!CMS_data(cms, out, flags)) goto end; } else if (operation == SMIME_UNCOMPRESS) { if (!CMS_uncompress(cms, indata, out, flags)) goto end; } else if (operation == SMIME_DIGEST_VERIFY) { if (CMS_digest_verify(cms, indata, out, flags) > 0) BIO_printf(bio_err, "Verification successful\n"); else { BIO_printf(bio_err, "Verification failure\n"); goto end; } } else if (operation == SMIME_ENCRYPTED_DECRYPT) { if (!CMS_EncryptedData_decrypt(cms, secret_key, secret_keylen, indata, out, flags)) goto end; } else if (operation == SMIME_VERIFY) { if (CMS_verify(cms, other, store, indata, out, flags) > 0) BIO_printf(bio_err, "Verification successful\n"); else { BIO_printf(bio_err, "Verification failure\n"); if (verify_retcode) ret = verify_err + 32; goto end; } if (signerfile) { STACK_OF(X509) *signers; if ((signers = CMS_get0_signers(cms)) == NULL) goto end; if (!save_certs(signerfile, signers)) { BIO_printf(bio_err, "Error writing signers to %s\n", signerfile); ret = 5; goto end; } sk_X509_free(signers); } if (rr_print) receipt_request_print(bio_err, cms); } else if (operation == SMIME_VERIFY_RECEIPT) { if (CMS_verify_receipt(rcms, cms, other, store, flags) > 0) BIO_printf(bio_err, "Verification successful\n"); else { BIO_printf(bio_err, "Verification failure\n"); goto end; } } else { if (noout) { if (print && !CMS_ContentInfo_print_ctx(out, cms, 0, NULL)) goto end; } else if (outformat == FORMAT_SMIME) { if (to) BIO_printf(out, "To: %s\n", to); if (from) BIO_printf(out, "From: %s\n", from); if (subject) BIO_printf(out, "Subject: %s\n", subject); if (operation == SMIME_RESIGN) ret = SMIME_write_CMS(out, cms, indata, flags); else ret = SMIME_write_CMS(out, cms, in, flags); } else if (outformat == FORMAT_PEM) ret = PEM_write_bio_CMS_stream(out, cms, in, flags); else if (outformat == FORMAT_ASN1) ret = i2d_CMS_bio_stream(out, cms, in, 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(encerts, X509_free); sk_X509_pop_free(other, X509_free); X509_VERIFY_PARAM_free(vpm); sk_OPENSSL_STRING_free(sksigners); sk_OPENSSL_STRING_free(skkeys); free(secret_key); free(secret_keyid); free(pwri_tmp); ASN1_OBJECT_free(econtent_type); CMS_ReceiptRequest_free(rr); sk_OPENSSL_STRING_free(rr_to); sk_OPENSSL_STRING_free(rr_from); for (key_param = key_first; key_param;) { struct cms_key_param *tparam; sk_OPENSSL_STRING_free(key_param->param); tparam = key_param->next; free(key_param); key_param = tparam; } X509_STORE_free(store); X509_free(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) return 1; tmp = BIO_new_file(signerfile, "w"); if (!tmp) 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; } /* Minimal callback just to output policy info (if any) */ static int cms_cb(int ok, X509_STORE_CTX *ctx) { int error; error = X509_STORE_CTX_get_error(ctx); verify_err = error; if ((error != X509_V_ERR_NO_EXPLICIT_POLICY) && ((error != X509_V_OK) || (ok != 2))) return ok; policies_print(NULL, ctx); return ok; } 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++) { si = sk_CMS_SignerInfo_value(sis, i); 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) { 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); } if (rr) 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) goto err; gens = GENERAL_NAMES_new(); if (!gens) 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, *rct_from; CMS_ReceiptRequest *rr; rct_to = make_names_stack(rr_to); if (!rct_to) goto err; if (rr_from) { rct_from = make_names_stack(rr_from); if (!rct_from) 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: 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