a0a82324f9
Loading the config file after processing command line options can cause problems, e.g. where an engine provides new ciphers/digests these are not then recoginised on the command line. Move the default config file loading to before the command line option processing. Whilst we're doing this we might as well centralise this instead of doing it individually for each application. Finally if we do it before the OpenSSL_add_ssl_algorithms() call then ciphersuites provided by an engine (e.g. GOST) can be available to the apps. RT#4085 RT#4086 Reviewed-by: Richard Levitte <levitte@openssl.org>
636 lines
20 KiB
C
636 lines
20 KiB
C
/* Copyright (C) 1995-1998 Eric Young (eay@cryptsoft.com)
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* All rights reserved.
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*
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* This package is an SSL implementation written
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* by Eric Young (eay@cryptsoft.com).
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* The implementation was written so as to conform with Netscapes SSL.
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*
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* This library is free for commercial and non-commercial use as long as
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* the following conditions are aheared to. The following conditions
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* apply to all code found in this distribution, be it the RC4, RSA,
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* lhash, DES, etc., code; not just the SSL code. The SSL documentation
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* included with this distribution is covered by the same copyright terms
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* except that the holder is Tim Hudson (tjh@cryptsoft.com).
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*
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* Copyright remains Eric Young's, and as such any Copyright notices in
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* the code are not to be removed.
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* If this package is used in a product, Eric Young should be given attribution
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* as the author of the parts of the library used.
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* This can be in the form of a textual message at program startup or
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* in documentation (online or textual) provided with the package.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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* 3. All advertising materials mentioning features or use of this software
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* must display the following acknowledgement:
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* "This product includes cryptographic software written by
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* Eric Young (eay@cryptsoft.com)"
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* The word 'cryptographic' can be left out if the rouines from the library
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* being used are not cryptographic related :-).
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* 4. If you include any Windows specific code (or a derivative thereof) from
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* the apps directory (application code) you must include an acknowledgement:
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* "This product includes software written by Tim Hudson (tjh@cryptsoft.com)"
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*
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* THIS SOFTWARE IS PROVIDED BY ERIC YOUNG ``AS IS'' AND
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* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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* ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
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* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
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* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
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* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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* SUCH DAMAGE.
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*
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* The licence and distribution terms for any publically available version or
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* derivative of this code cannot be changed. i.e. this code cannot simply be
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* copied and put under another distribution licence
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* [including the GNU Public Licence.]
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*/
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#include <stdio.h>
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#include <stdlib.h>
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#include <string.h>
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#include "apps.h"
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#include <openssl/bio.h>
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#include <openssl/err.h>
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#include <openssl/evp.h>
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#include <openssl/objects.h>
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#include <openssl/x509.h>
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#include <openssl/rand.h>
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#include <openssl/pem.h>
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#ifndef OPENSSL_NO_COMP
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# include <openssl/comp.h>
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#endif
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#include <ctype.h>
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#undef SIZE
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#undef BSIZE
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#define SIZE (512)
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#define BSIZE (8*1024)
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static int set_hex(char *in, unsigned char *out, int size);
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static void show_ciphers(const OBJ_NAME *name, void *bio_);
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typedef enum OPTION_choice {
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OPT_ERR = -1, OPT_EOF = 0, OPT_HELP,
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OPT_E, OPT_IN, OPT_OUT, OPT_PASS, OPT_ENGINE, OPT_D, OPT_P, OPT_V,
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OPT_NOPAD, OPT_SALT, OPT_NOSALT, OPT_DEBUG, OPT_UPPER_P, OPT_UPPER_A,
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OPT_A, OPT_Z, OPT_BUFSIZE, OPT_K, OPT_KFILE, OPT_UPPER_K, OPT_NONE,
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OPT_UPPER_S, OPT_IV, OPT_MD, OPT_NON_FIPS_ALLOW, OPT_CIPHER
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} OPTION_CHOICE;
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OPTIONS enc_options[] = {
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{"help", OPT_HELP, '-', "Display this summary"},
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{"in", OPT_IN, '<', "Input file"},
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{"out", OPT_OUT, '>', "Output file"},
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{"pass", OPT_PASS, 's', "Passphrase source"},
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{"e", OPT_E, '-', "Encrypt"},
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{"d", OPT_D, '-', "Decrypt"},
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{"p", OPT_P, '-', "Print the iv/key"},
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{"P", OPT_UPPER_P, '-', "Print the iv/key and exit"},
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{"v", OPT_V, '-'},
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{"nopad", OPT_NOPAD, '-', "Disable standard block padding"},
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{"salt", OPT_SALT, '-'},
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{"nosalt", OPT_NOSALT, '-'},
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{"debug", OPT_DEBUG, '-'},
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{"A", OPT_UPPER_A, '-'},
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{"a", OPT_A, '-', "base64 encode/decode, depending on encryption flag"},
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{"base64", OPT_A, '-', "Base64 output as a single line"},
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{"bufsize", OPT_BUFSIZE, 's', "Buffer size"},
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{"k", OPT_K, 's', "Passphrase"},
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{"kfile", OPT_KFILE, '<', "Fead passphrase from file"},
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{"K", OPT_UPPER_K, 's', "Raw key, in hex"},
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{"S", OPT_UPPER_S, 's', "Salt, in hex"},
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{"iv", OPT_IV, 's', "IV in hex"},
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{"md", OPT_MD, 's', "Use specified digest to create key from passphrase"},
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{"non-fips-allow", OPT_NON_FIPS_ALLOW, '-'},
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{"none", OPT_NONE, '-', "Don't encrypt"},
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{"", OPT_CIPHER, '-', "Any supported cipher"},
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#ifdef ZLIB
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{"z", OPT_Z, '-', "Use zlib as the 'encryption'"},
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#endif
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#ifndef OPENSSL_NO_ENGINE
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{"engine", OPT_ENGINE, 's', "Use engine, possibly a hardware device"},
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#endif
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{NULL}
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};
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int enc_main(int argc, char **argv)
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{
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static char buf[128];
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static const char magic[] = "Salted__";
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BIO *in = NULL, *out = NULL, *b64 = NULL, *benc = NULL, *rbio =
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NULL, *wbio = NULL;
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EVP_CIPHER_CTX *ctx = NULL;
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const EVP_CIPHER *cipher = NULL, *c;
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const EVP_MD *dgst = NULL;
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char *hkey = NULL, *hiv = NULL, *hsalt = NULL, *p;
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char *infile = NULL, *outfile = NULL, *prog;
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char *str = NULL, *passarg = NULL, *pass = NULL, *strbuf = NULL;
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char mbuf[sizeof magic - 1];
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OPTION_CHOICE o;
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int bsize = BSIZE, verbose = 0, debug = 0, olb64 = 0, nosalt = 0;
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int enc = 1, printkey = 0, i, k;
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int base64 = 0, informat = FORMAT_BINARY, outformat = FORMAT_BINARY;
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int ret = 1, inl, nopad = 0, non_fips_allow = 0;
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unsigned char key[EVP_MAX_KEY_LENGTH], iv[EVP_MAX_IV_LENGTH];
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unsigned char *buff = NULL, salt[PKCS5_SALT_LEN];
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unsigned long n;
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#ifdef ZLIB
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int do_zlib = 0;
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BIO *bzl = NULL;
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#endif
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/* first check the program name */
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prog = opt_progname(argv[0]);
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if (strcmp(prog, "base64") == 0)
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base64 = 1;
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#ifdef ZLIB
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else if (strcmp(prog, "zlib") == 0)
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do_zlib = 1;
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#endif
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else {
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cipher = EVP_get_cipherbyname(prog);
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if (cipher == NULL && strcmp(prog, "enc") != 0) {
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BIO_printf(bio_err, "%s is not a known cipher\n", prog);
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goto end;
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}
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}
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prog = opt_init(argc, argv, enc_options);
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while ((o = opt_next()) != OPT_EOF) {
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switch (o) {
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case OPT_EOF:
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case OPT_ERR:
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opthelp:
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BIO_printf(bio_err, "%s: Use -help for summary.\n", prog);
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goto end;
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case OPT_HELP:
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opt_help(enc_options);
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ret = 0;
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BIO_printf(bio_err, "Cipher Types\n");
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OBJ_NAME_do_all_sorted(OBJ_NAME_TYPE_CIPHER_METH,
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show_ciphers, bio_err);
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BIO_printf(bio_err, "\n");
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goto end;
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case OPT_E:
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enc = 1;
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break;
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case OPT_IN:
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infile = opt_arg();
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break;
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case OPT_OUT:
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outfile = opt_arg();
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break;
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case OPT_PASS:
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passarg = opt_arg();
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break;
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case OPT_ENGINE:
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(void)setup_engine(opt_arg(), 0);
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break;
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case OPT_D:
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enc = 0;
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break;
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case OPT_P:
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printkey = 1;
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break;
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case OPT_V:
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verbose = 1;
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break;
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case OPT_NOPAD:
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nopad = 1;
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break;
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case OPT_SALT:
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nosalt = 0;
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break;
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case OPT_NOSALT:
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nosalt = 1;
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break;
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case OPT_DEBUG:
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debug = 1;
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break;
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case OPT_UPPER_P:
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printkey = 2;
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break;
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case OPT_UPPER_A:
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olb64 = 1;
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break;
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case OPT_A:
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base64 = 1;
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break;
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case OPT_Z:
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#ifdef ZLIB
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do_zlib = 1;
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#endif
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break;
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case OPT_BUFSIZE:
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p = opt_arg();
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i = (int)strlen(p) - 1;
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k = i >= 1 && p[i] == 'k';
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if (k)
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p[i] = '\0';
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if (!opt_ulong(opt_arg(), &n))
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goto opthelp;
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if (k)
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n *= 1024;
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bsize = (int)n;
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break;
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case OPT_K:
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str = opt_arg();
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break;
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case OPT_KFILE:
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in = bio_open_default(opt_arg(), 'r', FORMAT_TEXT);
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if (in == NULL)
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goto opthelp;
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i = BIO_gets(in, buf, sizeof buf);
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BIO_free(in);
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in = NULL;
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if (i <= 0) {
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BIO_printf(bio_err,
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"%s Can't read key from %s\n", prog, opt_arg());
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goto opthelp;
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}
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while (--i > 0 && (buf[i] == '\r' || buf[i] == '\n'))
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buf[i] = '\0';
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if (i <= 0) {
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BIO_printf(bio_err, "%s: zero length password\n", prog);
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goto opthelp;
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}
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str = buf;
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break;
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case OPT_UPPER_K:
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hkey = opt_arg();
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break;
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case OPT_UPPER_S:
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hsalt = opt_arg();
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break;
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case OPT_IV:
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hiv = opt_arg();
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break;
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case OPT_MD:
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if (!opt_md(opt_arg(), &dgst))
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goto opthelp;
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break;
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case OPT_NON_FIPS_ALLOW:
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non_fips_allow = 1;
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break;
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case OPT_CIPHER:
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if (!opt_cipher(opt_unknown(), &c))
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goto opthelp;
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cipher = c;
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break;
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case OPT_NONE:
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cipher = NULL;
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break;
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}
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}
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argc = opt_num_rest();
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argv = opt_rest();
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if (cipher && EVP_CIPHER_flags(cipher) & EVP_CIPH_FLAG_AEAD_CIPHER) {
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BIO_printf(bio_err, "%s: AEAD ciphers not supported\n", prog);
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goto end;
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}
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if (cipher && (EVP_CIPHER_mode(cipher) == EVP_CIPH_XTS_MODE)) {
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BIO_printf(bio_err, "%s XTS ciphers not supported\n", prog);
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goto end;
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}
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if (dgst == NULL)
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dgst = EVP_md5();
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/* It must be large enough for a base64 encoded line */
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if (base64 && bsize < 80)
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bsize = 80;
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if (verbose)
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BIO_printf(bio_err, "bufsize=%d\n", bsize);
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if (base64) {
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if (enc)
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outformat = FORMAT_BASE64;
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else
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informat = FORMAT_BASE64;
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}
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strbuf = app_malloc(SIZE, "strbuf");
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buff = app_malloc(EVP_ENCODE_LENGTH(bsize), "evp buffer");
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if (debug) {
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BIO_set_callback(in, BIO_debug_callback);
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BIO_set_callback(out, BIO_debug_callback);
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BIO_set_callback_arg(in, (char *)bio_err);
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BIO_set_callback_arg(out, (char *)bio_err);
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}
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if (infile == NULL) {
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unbuffer(stdin);
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in = dup_bio_in(informat);
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} else
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in = bio_open_default(infile, 'r', informat);
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if (in == NULL)
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goto end;
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if (!str && passarg) {
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if (!app_passwd(passarg, NULL, &pass, NULL)) {
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BIO_printf(bio_err, "Error getting password\n");
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goto end;
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}
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str = pass;
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}
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if ((str == NULL) && (cipher != NULL) && (hkey == NULL)) {
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for (;;) {
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char prompt[200];
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BIO_snprintf(prompt, sizeof prompt, "enter %s %s password:",
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OBJ_nid2ln(EVP_CIPHER_nid(cipher)),
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(enc) ? "encryption" : "decryption");
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strbuf[0] = '\0';
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i = EVP_read_pw_string((char *)strbuf, SIZE, prompt, enc);
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if (i == 0) {
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if (strbuf[0] == '\0') {
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ret = 1;
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goto end;
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}
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str = strbuf;
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break;
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}
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if (i < 0) {
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BIO_printf(bio_err, "bad password read\n");
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goto end;
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}
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}
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}
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out = bio_open_default(outfile, 'w', outformat);
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if (out == NULL)
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goto end;
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rbio = in;
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wbio = out;
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#ifdef ZLIB
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if (do_zlib) {
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if ((bzl = BIO_new(BIO_f_zlib())) == NULL)
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goto end;
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if (enc)
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wbio = BIO_push(bzl, wbio);
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else
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rbio = BIO_push(bzl, rbio);
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}
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#endif
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if (base64) {
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if ((b64 = BIO_new(BIO_f_base64())) == NULL)
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goto end;
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if (debug) {
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BIO_set_callback(b64, BIO_debug_callback);
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BIO_set_callback_arg(b64, (char *)bio_err);
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}
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if (olb64)
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BIO_set_flags(b64, BIO_FLAGS_BASE64_NO_NL);
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if (enc)
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wbio = BIO_push(b64, wbio);
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else
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rbio = BIO_push(b64, rbio);
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}
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if (cipher != NULL) {
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/*
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* Note that str is NULL if a key was passed on the command line, so
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* we get no salt in that case. Is this a bug?
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*/
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if (str != NULL) {
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/*
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* Salt handling: if encrypting generate a salt and write to
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* output BIO. If decrypting read salt from input BIO.
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*/
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unsigned char *sptr;
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if (nosalt)
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sptr = NULL;
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else {
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if (enc) {
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if (hsalt) {
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if (!set_hex(hsalt, salt, sizeof salt)) {
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BIO_printf(bio_err, "invalid hex salt value\n");
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goto end;
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}
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} else if (RAND_bytes(salt, sizeof salt) <= 0)
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goto end;
|
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/*
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* If -P option then don't bother writing
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*/
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if ((printkey != 2)
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&& (BIO_write(wbio, magic,
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sizeof magic - 1) != sizeof magic - 1
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|| BIO_write(wbio,
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(char *)salt,
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sizeof salt) != sizeof salt)) {
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BIO_printf(bio_err, "error writing output file\n");
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goto end;
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}
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} else if (BIO_read(rbio, mbuf, sizeof mbuf) != sizeof mbuf
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|| BIO_read(rbio,
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(unsigned char *)salt,
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sizeof salt) != sizeof salt) {
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BIO_printf(bio_err, "error reading input file\n");
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goto end;
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} else if (memcmp(mbuf, magic, sizeof magic - 1)) {
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BIO_printf(bio_err, "bad magic number\n");
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goto end;
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}
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sptr = salt;
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}
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|
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if (!EVP_BytesToKey(cipher, dgst, sptr,
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(unsigned char *)str,
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strlen(str), 1, key, iv)) {
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BIO_printf(bio_err, "EVP_BytesToKey failed\n");
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goto end;
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}
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/*
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* zero the complete buffer or the string passed from the command
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* line bug picked up by Larry J. Hughes Jr. <hughes@indiana.edu>
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*/
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if (str == strbuf)
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OPENSSL_cleanse(str, SIZE);
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else
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OPENSSL_cleanse(str, strlen(str));
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}
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if (hiv != NULL) {
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int siz = EVP_CIPHER_iv_length(cipher);
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if (siz == 0) {
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BIO_printf(bio_err, "warning: iv not use by this cipher\n");
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} else if (!set_hex(hiv, iv, sizeof iv)) {
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BIO_printf(bio_err, "invalid hex iv value\n");
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goto end;
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}
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}
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if ((hiv == NULL) && (str == NULL)
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&& EVP_CIPHER_iv_length(cipher) != 0) {
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/*
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* No IV was explicitly set and no IV was generated during
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* EVP_BytesToKey. Hence the IV is undefined, making correct
|
|
* decryption impossible.
|
|
*/
|
|
BIO_printf(bio_err, "iv undefined\n");
|
|
goto end;
|
|
}
|
|
if ((hkey != NULL) && !set_hex(hkey, key, EVP_CIPHER_key_length(cipher))) {
|
|
BIO_printf(bio_err, "invalid hex key value\n");
|
|
goto end;
|
|
}
|
|
|
|
if ((benc = BIO_new(BIO_f_cipher())) == NULL)
|
|
goto end;
|
|
|
|
/*
|
|
* Since we may be changing parameters work on the encryption context
|
|
* rather than calling BIO_set_cipher().
|
|
*/
|
|
|
|
BIO_get_cipher_ctx(benc, &ctx);
|
|
|
|
if (non_fips_allow)
|
|
EVP_CIPHER_CTX_set_flags(ctx, EVP_CIPH_FLAG_NON_FIPS_ALLOW);
|
|
|
|
if (!EVP_CipherInit_ex(ctx, cipher, NULL, NULL, NULL, enc)) {
|
|
BIO_printf(bio_err, "Error setting cipher %s\n",
|
|
EVP_CIPHER_name(cipher));
|
|
ERR_print_errors(bio_err);
|
|
goto end;
|
|
}
|
|
|
|
if (nopad)
|
|
EVP_CIPHER_CTX_set_padding(ctx, 0);
|
|
|
|
if (!EVP_CipherInit_ex(ctx, NULL, NULL, key, iv, enc)) {
|
|
BIO_printf(bio_err, "Error setting cipher %s\n",
|
|
EVP_CIPHER_name(cipher));
|
|
ERR_print_errors(bio_err);
|
|
goto end;
|
|
}
|
|
|
|
if (debug) {
|
|
BIO_set_callback(benc, BIO_debug_callback);
|
|
BIO_set_callback_arg(benc, (char *)bio_err);
|
|
}
|
|
|
|
if (printkey) {
|
|
if (!nosalt) {
|
|
printf("salt=");
|
|
for (i = 0; i < (int)sizeof(salt); i++)
|
|
printf("%02X", salt[i]);
|
|
printf("\n");
|
|
}
|
|
if (cipher->key_len > 0) {
|
|
printf("key=");
|
|
for (i = 0; i < cipher->key_len; i++)
|
|
printf("%02X", key[i]);
|
|
printf("\n");
|
|
}
|
|
if (cipher->iv_len > 0) {
|
|
printf("iv =");
|
|
for (i = 0; i < cipher->iv_len; i++)
|
|
printf("%02X", iv[i]);
|
|
printf("\n");
|
|
}
|
|
if (printkey == 2) {
|
|
ret = 0;
|
|
goto end;
|
|
}
|
|
}
|
|
}
|
|
|
|
/* Only encrypt/decrypt as we write the file */
|
|
if (benc != NULL)
|
|
wbio = BIO_push(benc, wbio);
|
|
|
|
for (;;) {
|
|
inl = BIO_read(rbio, (char *)buff, bsize);
|
|
if (inl <= 0)
|
|
break;
|
|
if (BIO_write(wbio, (char *)buff, inl) != inl) {
|
|
BIO_printf(bio_err, "error writing output file\n");
|
|
goto end;
|
|
}
|
|
}
|
|
if (!BIO_flush(wbio)) {
|
|
BIO_printf(bio_err, "bad decrypt\n");
|
|
goto end;
|
|
}
|
|
|
|
ret = 0;
|
|
if (verbose) {
|
|
BIO_printf(bio_err, "bytes read :%8"PRIu64"\n", BIO_number_read(in));
|
|
BIO_printf(bio_err, "bytes written:%8"PRIu64"\n", BIO_number_written(out));
|
|
}
|
|
end:
|
|
ERR_print_errors(bio_err);
|
|
OPENSSL_free(strbuf);
|
|
OPENSSL_free(buff);
|
|
BIO_free(in);
|
|
BIO_free_all(out);
|
|
BIO_free(benc);
|
|
BIO_free(b64);
|
|
#ifdef ZLIB
|
|
BIO_free(bzl);
|
|
#endif
|
|
OPENSSL_free(pass);
|
|
return (ret);
|
|
}
|
|
|
|
static void show_ciphers(const OBJ_NAME *name, void *bio_)
|
|
{
|
|
BIO *bio = bio_;
|
|
static int n;
|
|
|
|
if (!islower((unsigned char)*name->name))
|
|
return;
|
|
|
|
BIO_printf(bio, "-%-25s", name->name);
|
|
if (++n == 3) {
|
|
BIO_printf(bio, "\n");
|
|
n = 0;
|
|
} else
|
|
BIO_printf(bio, " ");
|
|
}
|
|
|
|
static int set_hex(char *in, unsigned char *out, int size)
|
|
{
|
|
int i, n;
|
|
unsigned char j;
|
|
|
|
n = strlen(in);
|
|
if (n > (size * 2)) {
|
|
BIO_printf(bio_err, "hex string is too long\n");
|
|
return (0);
|
|
}
|
|
memset(out, 0, size);
|
|
for (i = 0; i < n; i++) {
|
|
j = (unsigned char)*in;
|
|
*(in++) = '\0';
|
|
if (j == 0)
|
|
break;
|
|
if (!isxdigit(j)) {
|
|
BIO_printf(bio_err, "non-hex digit\n");
|
|
return (0);
|
|
}
|
|
j = (unsigned char)app_hex(j);
|
|
if (i & 1)
|
|
out[i / 2] |= j;
|
|
else
|
|
out[i / 2] = (j << 4);
|
|
}
|
|
return (1);
|
|
}
|