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openssl/apps/dgst.c
Richard Levitte bdd58d9846 Change the way apps open their input and output files 
The different apps had the liberty to decide whether they would open their
input and output files in binary mode or not, which could be confusing if
two different apps were handling the same type of file in different ways.

The solution is to centralise the decision of low level file organisation,
and that the apps would use a selection of formats to state the intent of
the file.

Reviewed-by: Tim Hudson <tjh@openssl.org>
2015-09-06 01:35:54 +02:00

534 lines
18 KiB
C
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/* Copyright (C) 1995-1998 Eric Young (eay@cryptsoft.com)
* All rights reserved.
*
* This package is an SSL implementation written
* by Eric Young (eay@cryptsoft.com).
* The implementation was written so as to conform with Netscapes SSL.
*
* This library is free for commercial and non-commercial use as long as
* the following conditions are aheared to. The following conditions
* apply to all code found in this distribution, be it the RC4, RSA,
* lhash, DES, etc., code; not just the SSL code. The SSL documentation
* included with this distribution is covered by the same copyright terms
* except that the holder is Tim Hudson (tjh@cryptsoft.com).
*
* Copyright remains Eric Young's, and as such any Copyright notices in
* the code are not to be removed.
* If this package is used in a product, Eric Young should be given attribution
* as the author of the parts of the library used.
* This can be in the form of a textual message at program startup or
* in documentation (online or textual) provided with the package.
*
* 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 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 acknowledgement:
* "This product includes cryptographic software written by
* Eric Young (eay@cryptsoft.com)"
* The word 'cryptographic' can be left out if the rouines from the library
* being used are not cryptographic related :-).
* 4. If you include any Windows specific code (or a derivative thereof) from
* the apps directory (application code) you must include an acknowledgement:
* "This product includes software written by Tim Hudson (tjh@cryptsoft.com)"
*
* THIS SOFTWARE IS PROVIDED BY ERIC YOUNG ``AS IS'' AND
* ANY EXPRESS 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 AUTHOR OR 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.
*
* The licence and distribution terms for any publically available version or
* derivative of this code cannot be changed. i.e. this code cannot simply be
* copied and put under another distribution licence
* [including the GNU Public Licence.]
*/
#include <stdio.h>
#include <string.h>
#include <stdlib.h>
#include "apps.h"
#include <openssl/bio.h>
#include <openssl/err.h>
#include <openssl/evp.h>
#include <openssl/objects.h>
#include <openssl/x509.h>
#include <openssl/pem.h>
#include <openssl/hmac.h>
#undef BUFSIZE
#define BUFSIZE 1024*8
int do_fp(BIO *out, unsigned char *buf, BIO *bp, int sep, int binout,
EVP_PKEY *key, unsigned char *sigin, int siglen,
const char *sig_name, const char *md_name,
const char *file, BIO *bmd);
typedef enum OPTION_choice {
OPT_ERR = -1, OPT_EOF = 0, OPT_HELP,
OPT_C, OPT_R, OPT_RAND, OPT_OUT, OPT_SIGN, OPT_PASSIN, OPT_VERIFY,
OPT_PRVERIFY, OPT_SIGNATURE, OPT_KEYFORM, OPT_ENGINE, OPT_ENGINE_IMPL,
OPT_HEX, OPT_BINARY, OPT_DEBUG, OPT_FIPS_FINGERPRINT,
OPT_NON_FIPS_ALLOW, OPT_HMAC, OPT_MAC, OPT_SIGOPT, OPT_MACOPT,
OPT_DIGEST
} OPTION_CHOICE;
OPTIONS dgst_options[] = {
{OPT_HELP_STR, 1, '-', "Usage: %s [options] [file...]\n"},
{OPT_HELP_STR, 1, '-',
" file... files to digest (default is stdin)\n"},
{"help", OPT_HELP, '-', "Display this summary"},
{"c", OPT_C, '-', "Print the digest with separating colons"},
{"r", OPT_R, '-', "Print the digest in coreutils format"},
{"rand", OPT_RAND, 's'},
{"out", OPT_OUT, '>', "Output to filename rather than stdout"},
{"passin", OPT_PASSIN, 's'},
{"sign", OPT_SIGN, '<', "Sign digest using private key in file"},
{"verify", OPT_VERIFY, '<',
"Verify a signature using public key in file"},
{"prverify", OPT_PRVERIFY, '<',
"Verify a signature using private key in file"},
{"signature", OPT_SIGNATURE, '<', "File with signature to verify"},
{"keyform", OPT_KEYFORM, 'f', "Key file format (PEM or ENGINE)"},
{"hex", OPT_HEX, '-', "Print as hex dump"},
{"binary", OPT_BINARY, '-', "Print in binary form"},
{"d", OPT_DEBUG, '-', "Print debug info"},
{"debug", OPT_DEBUG, '-'},
{"fips-fingerprint", OPT_FIPS_FINGERPRINT, '-'},
{"non-fips-allow", OPT_NON_FIPS_ALLOW, '-'},
{"hmac", OPT_HMAC, 's', "Create hashed MAC with key"},
{"mac", OPT_MAC, 's', "Create MAC (not neccessarily HMAC)"},
{"sigop", OPT_SIGOPT, 's', "Signature parameter in n:v form"},
{"macop", OPT_MACOPT, 's', "MAC algorithm parameters in n:v form or key"},
{"", OPT_DIGEST, '-', "Any supported digest"},
#ifndef OPENSSL_NO_ENGINE
{"engine", OPT_ENGINE, 's', "Use engine e, possibly a hardware device"},
{"engine_impl", OPT_ENGINE_IMPL, '-'},
#endif
{NULL}
};
int dgst_main(int argc, char **argv)
{
BIO *in = NULL, *inp, *bmd = NULL, *out = NULL;
ENGINE *e = NULL, *impl = NULL;
EVP_PKEY *sigkey = NULL;
STACK_OF(OPENSSL_STRING) *sigopts = NULL, *macopts = NULL;
char *hmac_key = NULL;
char *mac_name = NULL;
char *passinarg = NULL, *passin = NULL;
const EVP_MD *md = NULL, *m;
const char *outfile = NULL, *keyfile = NULL, *prog = NULL;
const char *sigfile = NULL, *randfile = NULL;
OPTION_CHOICE o;
int separator = 0, debug = 0, keyform = FORMAT_PEM, siglen = 0;
int i, ret = 1, out_bin = -1, want_pub = 0, do_verify =
0, non_fips_allow = 0;
unsigned char *buf = NULL, *sigbuf = NULL;
int engine_impl = 0;
prog = opt_progname(argv[0]);
buf = app_malloc(BUFSIZE, "I/O buffer");
md = EVP_get_digestbyname(prog);
prog = opt_init(argc, argv, dgst_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(dgst_options);
ret = 0;
goto end;
case OPT_C:
separator = 1;
break;
case OPT_R:
separator = 2;
break;
case OPT_RAND:
randfile = opt_arg();
break;
case OPT_OUT:
outfile = opt_arg();
break;
case OPT_SIGN:
keyfile = opt_arg();
break;
case OPT_PASSIN:
passinarg = opt_arg();
break;
case OPT_VERIFY:
keyfile = opt_arg();
want_pub = do_verify = 1;
break;
case OPT_PRVERIFY:
keyfile = opt_arg();
do_verify = 1;
break;
case OPT_SIGNATURE:
sigfile = opt_arg();
break;
case OPT_KEYFORM:
if (!opt_format(opt_arg(), OPT_FMT_ANY, &keyform))
goto opthelp;
break;
case OPT_ENGINE:
e = setup_engine(opt_arg(), 0);
break;
case OPT_ENGINE_IMPL:
engine_impl = 1;
break;
case OPT_HEX:
out_bin = 0;
break;
case OPT_BINARY:
out_bin = 1;
break;
case OPT_DEBUG:
debug = 1;
break;
case OPT_FIPS_FINGERPRINT:
hmac_key = "etaonrishdlcupfm";
break;
case OPT_NON_FIPS_ALLOW:
non_fips_allow = 1;
break;
case OPT_HMAC:
hmac_key = opt_arg();
break;
case OPT_MAC:
mac_name = opt_arg();
break;
case OPT_SIGOPT:
if (!sigopts)
sigopts = sk_OPENSSL_STRING_new_null();
if (!sigopts || !sk_OPENSSL_STRING_push(sigopts, opt_arg()))
goto opthelp;
break;
case OPT_MACOPT:
if (!macopts)
macopts = sk_OPENSSL_STRING_new_null();
if (!macopts || !sk_OPENSSL_STRING_push(macopts, opt_arg()))
goto opthelp;
break;
case OPT_DIGEST:
if (!opt_md(opt_unknown(), &m))
goto opthelp;
md = m;
break;
}
}
argc = opt_num_rest();
argv = opt_rest();
if (!app_load_modules(NULL))
goto end;
if (do_verify && !sigfile) {
BIO_printf(bio_err,
"No signature to verify: use the -signature option\n");
goto end;
}
if (engine_impl)
impl = e;
in = BIO_new(BIO_s_file());
bmd = BIO_new(BIO_f_md());
if ((in == NULL) || (bmd == NULL)) {
ERR_print_errors(bio_err);
goto end;
}
if (debug) {
BIO_set_callback(in, BIO_debug_callback);
/* needed for windows 3.1 */
BIO_set_callback_arg(in, (char *)bio_err);
}
if (!app_passwd(passinarg, NULL, &passin, NULL)) {
BIO_printf(bio_err, "Error getting password\n");
goto end;
}
if (out_bin == -1) {
if (keyfile)
out_bin = 1;
else
out_bin = 0;
}
if (randfile)
app_RAND_load_file(randfile, 0);
out = bio_open_default(outfile, 'w', out_bin ? FORMAT_BINARY : FORMAT_TEXT);
if (out == NULL)
goto end;
if ((! !mac_name + ! !keyfile + ! !hmac_key) > 1) {
BIO_printf(bio_err, "MAC and Signing key cannot both be specified\n");
goto end;
}
if (keyfile) {
if (want_pub)
sigkey = load_pubkey(keyfile, keyform, 0, NULL, e, "key file");
else
sigkey = load_key(keyfile, keyform, 0, passin, e, "key file");
if (!sigkey) {
/*
* load_[pub]key() has already printed an appropriate message
*/
goto end;
}
}
if (mac_name) {
EVP_PKEY_CTX *mac_ctx = NULL;
int r = 0;
if (!init_gen_str(&mac_ctx, mac_name, impl, 0))
goto mac_end;
if (macopts) {
char *macopt;
for (i = 0; i < sk_OPENSSL_STRING_num(macopts); i++) {
macopt = sk_OPENSSL_STRING_value(macopts, i);
if (pkey_ctrl_string(mac_ctx, macopt) <= 0) {
BIO_printf(bio_err,
"MAC parameter error \"%s\"\n", macopt);
ERR_print_errors(bio_err);
goto mac_end;
}
}
}
if (EVP_PKEY_keygen(mac_ctx, &sigkey) <= 0) {
BIO_puts(bio_err, "Error generating key\n");
ERR_print_errors(bio_err);
goto mac_end;
}
r = 1;
mac_end:
EVP_PKEY_CTX_free(mac_ctx);
if (r == 0)
goto end;
}
if (non_fips_allow) {
EVP_MD_CTX *md_ctx;
BIO_get_md_ctx(bmd, &md_ctx);
EVP_MD_CTX_set_flags(md_ctx, EVP_MD_CTX_FLAG_NON_FIPS_ALLOW);
}
if (hmac_key) {
sigkey = EVP_PKEY_new_mac_key(EVP_PKEY_HMAC, impl,
(unsigned char *)hmac_key, -1);
if (!sigkey)
goto end;
}
if (sigkey) {
EVP_MD_CTX *mctx = NULL;
EVP_PKEY_CTX *pctx = NULL;
int r;
if (!BIO_get_md_ctx(bmd, &mctx)) {
BIO_printf(bio_err, "Error getting context\n");
ERR_print_errors(bio_err);
goto end;
}
if (do_verify)
r = EVP_DigestVerifyInit(mctx, &pctx, md, impl, sigkey);
else
r = EVP_DigestSignInit(mctx, &pctx, md, impl, sigkey);
if (!r) {
BIO_printf(bio_err, "Error setting context\n");
ERR_print_errors(bio_err);
goto end;
}
if (sigopts) {
char *sigopt;
for (i = 0; i < sk_OPENSSL_STRING_num(sigopts); i++) {
sigopt = sk_OPENSSL_STRING_value(sigopts, i);
if (pkey_ctrl_string(pctx, sigopt) <= 0) {
BIO_printf(bio_err, "parameter error \"%s\"\n", sigopt);
ERR_print_errors(bio_err);
goto end;
}
}
}
}
/* we use md as a filter, reading from 'in' */
else {
EVP_MD_CTX *mctx = NULL;
if (!BIO_get_md_ctx(bmd, &mctx)) {
BIO_printf(bio_err, "Error getting context\n");
ERR_print_errors(bio_err);
goto end;
}
if (md == NULL)
md = EVP_md5();
if (!EVP_DigestInit_ex(mctx, md, impl)) {
BIO_printf(bio_err, "Error setting digest\n");
ERR_print_errors(bio_err);
goto end;
}
}
if (sigfile && sigkey) {
BIO *sigbio = BIO_new_file(sigfile, "rb");
if (!sigbio) {
BIO_printf(bio_err, "Error opening signature file %s\n", sigfile);
ERR_print_errors(bio_err);
goto end;
}
siglen = EVP_PKEY_size(sigkey);
sigbuf = app_malloc(siglen, "signature buffer");
siglen = BIO_read(sigbio, sigbuf, siglen);
BIO_free(sigbio);
if (siglen <= 0) {
BIO_printf(bio_err, "Error reading signature file %s\n", sigfile);
ERR_print_errors(bio_err);
goto end;
}
}
inp = BIO_push(bmd, in);
if (md == NULL) {
EVP_MD_CTX *tctx;
BIO_get_md_ctx(bmd, &tctx);
md = EVP_MD_CTX_md(tctx);
}
if (argc == 0) {
BIO_set_fp(in, stdin, BIO_NOCLOSE);
ret = do_fp(out, buf, inp, separator, out_bin, sigkey, sigbuf,
siglen, NULL, NULL, "stdin", bmd);
} else {
const char *md_name = NULL, *sig_name = NULL;
if (!out_bin) {
if (sigkey) {
const EVP_PKEY_ASN1_METHOD *ameth;
ameth = EVP_PKEY_get0_asn1(sigkey);
if (ameth)
EVP_PKEY_asn1_get0_info(NULL, NULL,
NULL, NULL, &sig_name, ameth);
}
if (md)
md_name = EVP_MD_name(md);
}
ret = 0;
for (i = 0; i < argc; i++) {
int r;
if (BIO_read_filename(in, argv[i]) <= 0) {
perror(argv[i]);
ret++;
continue;
} else
r = do_fp(out, buf, inp, separator, out_bin, sigkey, sigbuf,
siglen, sig_name, md_name, argv[i], bmd);
if (r)
ret = r;
(void)BIO_reset(bmd);
}
}
end:
OPENSSL_clear_free(buf, BUFSIZE);
BIO_free(in);
OPENSSL_free(passin);
BIO_free_all(out);
EVP_PKEY_free(sigkey);
sk_OPENSSL_STRING_free(sigopts);
sk_OPENSSL_STRING_free(macopts);
OPENSSL_free(sigbuf);
BIO_free(bmd);
return (ret);
}
int do_fp(BIO *out, unsigned char *buf, BIO *bp, int sep, int binout,
EVP_PKEY *key, unsigned char *sigin, int siglen,
const char *sig_name, const char *md_name,
const char *file, BIO *bmd)
{
size_t len;
int i;
for (;;) {
i = BIO_read(bp, (char *)buf, BUFSIZE);
if (i < 0) {
BIO_printf(bio_err, "Read Error in %s\n", file);
ERR_print_errors(bio_err);
return 1;
}
if (i == 0)
break;
}
if (sigin) {
EVP_MD_CTX *ctx;
BIO_get_md_ctx(bp, &ctx);
i = EVP_DigestVerifyFinal(ctx, sigin, (unsigned int)siglen);
if (i > 0)
BIO_printf(out, "Verified OK\n");
else if (i == 0) {
BIO_printf(out, "Verification Failure\n");
return 1;
} else {
BIO_printf(bio_err, "Error Verifying Data\n");
ERR_print_errors(bio_err);
return 1;
}
return 0;
}
if (key) {
EVP_MD_CTX *ctx;
BIO_get_md_ctx(bp, &ctx);
len = BUFSIZE;
if (!EVP_DigestSignFinal(ctx, buf, &len)) {
BIO_printf(bio_err, "Error Signing Data\n");
ERR_print_errors(bio_err);
return 1;
}
} else {
len = BIO_gets(bp, (char *)buf, BUFSIZE);
if ((int)len < 0) {
ERR_print_errors(bio_err);
return 1;
}
}
if (binout)
BIO_write(out, buf, len);
else if (sep == 2) {
for (i = 0; i < (int)len; i++)
BIO_printf(out, "%02x", buf[i]);
BIO_printf(out, " *%s\n", file);
} else {
if (sig_name) {
BIO_puts(out, sig_name);
if (md_name)
BIO_printf(out, "-%s", md_name);
BIO_printf(out, "(%s)= ", file);
} else if (md_name)
BIO_printf(out, "%s(%s)= ", md_name, file);
else
BIO_printf(out, "(%s)= ", file);
for (i = 0; i < (int)len; i++) {
if (sep && (i != 0))
BIO_printf(out, ":");
BIO_printf(out, "%02x", buf[i]);
}
BIO_printf(out, "\n");
}
return 0;
}
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