597 lines
18 KiB
C
597 lines
18 KiB
C
/*
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* Copyright 1995-2019 The OpenSSL Project Authors. All Rights Reserved.
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*
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* Licensed under the OpenSSL license (the "License"). You may not use
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* this file except in compliance with the License. You can obtain a copy
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* in the file LICENSE in the source distribution or at
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* https://www.openssl.org/source/license.html
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*/
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#include <stdio.h>
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#include <string.h>
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#include <stdlib.h>
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#include "apps.h"
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#include "progs.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/pem.h>
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#include <openssl/hmac.h>
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#include <ctype.h>
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#undef BUFSIZE
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#define BUFSIZE 1024*8
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int do_fp(BIO *out, unsigned char *buf, BIO *bp, int sep, int binout,
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EVP_PKEY *key, unsigned char *sigin, int siglen,
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const char *sig_name, const char *md_name,
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const char *file);
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static void show_digests(const OBJ_NAME *name, void *bio_);
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struct doall_dgst_digests {
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BIO *bio;
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int n;
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};
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typedef enum OPTION_choice {
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OPT_ERR = -1, OPT_EOF = 0, OPT_HELP, OPT_LIST,
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OPT_C, OPT_R, OPT_OUT, OPT_SIGN, OPT_PASSIN, OPT_VERIFY,
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OPT_PRVERIFY, OPT_SIGNATURE, OPT_KEYFORM, OPT_ENGINE, OPT_ENGINE_IMPL,
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OPT_HEX, OPT_BINARY, OPT_DEBUG, OPT_FIPS_FINGERPRINT,
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OPT_HMAC, OPT_MAC, OPT_SIGOPT, OPT_MACOPT,
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OPT_DIGEST,
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OPT_R_ENUM
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} OPTION_CHOICE;
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const OPTIONS dgst_options[] = {
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{OPT_HELP_STR, 1, '-', "Usage: %s [options] [file...]\n"},
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{OPT_HELP_STR, 1, '-',
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" file... files to digest (default is stdin)\n"},
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{"help", OPT_HELP, '-', "Display this summary"},
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{"list", OPT_LIST, '-', "List digests"},
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{"c", OPT_C, '-', "Print the digest with separating colons"},
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{"r", OPT_R, '-', "Print the digest in coreutils format"},
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{"out", OPT_OUT, '>', "Output to filename rather than stdout"},
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{"passin", OPT_PASSIN, 's', "Input file pass phrase source"},
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{"sign", OPT_SIGN, 's', "Sign digest using private key"},
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{"verify", OPT_VERIFY, 's',
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"Verify a signature using public key"},
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{"prverify", OPT_PRVERIFY, 's',
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"Verify a signature using private key"},
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{"signature", OPT_SIGNATURE, '<', "File with signature to verify"},
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{"keyform", OPT_KEYFORM, 'f', "Key file format (PEM or ENGINE)"},
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{"hex", OPT_HEX, '-', "Print as hex dump"},
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{"binary", OPT_BINARY, '-', "Print in binary form"},
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{"d", OPT_DEBUG, '-', "Print debug info"},
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{"debug", OPT_DEBUG, '-', "Print debug info"},
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{"fips-fingerprint", OPT_FIPS_FINGERPRINT, '-',
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"Compute HMAC with the key used in OpenSSL-FIPS fingerprint"},
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{"hmac", OPT_HMAC, 's', "Create hashed MAC with key"},
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{"mac", OPT_MAC, 's', "Create MAC (not necessarily HMAC)"},
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{"sigopt", OPT_SIGOPT, 's', "Signature parameter in n:v form"},
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{"macopt", OPT_MACOPT, 's', "MAC algorithm parameters in n:v form or key"},
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{"", OPT_DIGEST, '-', "Any supported digest"},
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OPT_R_OPTIONS,
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#ifndef OPENSSL_NO_ENGINE
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{"engine", OPT_ENGINE, 's', "Use engine e, possibly a hardware device"},
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{"engine_impl", OPT_ENGINE_IMPL, '-',
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"Also use engine given by -engine for digest operations"},
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#endif
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{NULL}
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};
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int dgst_main(int argc, char **argv)
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{
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BIO *in = NULL, *inp, *bmd = NULL, *out = NULL;
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ENGINE *e = NULL, *impl = NULL;
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EVP_PKEY *sigkey = NULL;
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STACK_OF(OPENSSL_STRING) *sigopts = NULL, *macopts = NULL;
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char *hmac_key = NULL;
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char *mac_name = NULL;
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char *passinarg = NULL, *passin = NULL;
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const EVP_MD *md = NULL, *m;
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const char *outfile = NULL, *keyfile = NULL, *prog = NULL;
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const char *sigfile = NULL;
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OPTION_CHOICE o;
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int separator = 0, debug = 0, keyform = FORMAT_PEM, siglen = 0;
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int i, ret = 1, out_bin = -1, want_pub = 0, do_verify = 0;
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unsigned char *buf = NULL, *sigbuf = NULL;
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int engine_impl = 0;
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struct doall_dgst_digests dec;
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prog = opt_progname(argv[0]);
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buf = app_malloc(BUFSIZE, "I/O buffer");
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md = EVP_get_digestbyname(prog);
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prog = opt_init(argc, argv, dgst_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(dgst_options);
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ret = 0;
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goto end;
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case OPT_LIST:
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BIO_printf(bio_out, "Supported digests:\n");
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dec.bio = bio_out;
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dec.n = 0;
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OBJ_NAME_do_all_sorted(OBJ_NAME_TYPE_MD_METH,
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show_digests, &dec);
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BIO_printf(bio_out, "\n");
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ret = 0;
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goto end;
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case OPT_C:
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separator = 1;
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break;
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case OPT_R:
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separator = 2;
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break;
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case OPT_R_CASES:
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if (!opt_rand(o))
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goto end;
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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_SIGN:
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keyfile = opt_arg();
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break;
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case OPT_PASSIN:
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passinarg = opt_arg();
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break;
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case OPT_VERIFY:
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keyfile = opt_arg();
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want_pub = do_verify = 1;
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break;
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case OPT_PRVERIFY:
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keyfile = opt_arg();
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do_verify = 1;
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break;
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case OPT_SIGNATURE:
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sigfile = opt_arg();
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break;
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case OPT_KEYFORM:
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if (!opt_format(opt_arg(), OPT_FMT_ANY, &keyform))
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goto opthelp;
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break;
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case OPT_ENGINE:
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e = setup_engine(opt_arg(), 0);
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break;
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case OPT_ENGINE_IMPL:
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engine_impl = 1;
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break;
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case OPT_HEX:
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out_bin = 0;
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break;
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case OPT_BINARY:
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out_bin = 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_FIPS_FINGERPRINT:
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hmac_key = "etaonrishdlcupfm";
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break;
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case OPT_HMAC:
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hmac_key = opt_arg();
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break;
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case OPT_MAC:
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mac_name = opt_arg();
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break;
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case OPT_SIGOPT:
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if (!sigopts)
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sigopts = sk_OPENSSL_STRING_new_null();
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if (!sigopts || !sk_OPENSSL_STRING_push(sigopts, opt_arg()))
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goto opthelp;
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break;
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case OPT_MACOPT:
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if (!macopts)
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macopts = sk_OPENSSL_STRING_new_null();
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if (!macopts || !sk_OPENSSL_STRING_push(macopts, opt_arg()))
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goto opthelp;
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break;
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case OPT_DIGEST:
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if (!opt_md(opt_unknown(), &m))
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goto opthelp;
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md = m;
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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 (keyfile != NULL && argc > 1) {
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BIO_printf(bio_err, "%s: Can only sign or verify one file.\n", prog);
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goto end;
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}
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if (do_verify && sigfile == NULL) {
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BIO_printf(bio_err,
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"No signature to verify: use the -signature option\n");
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goto end;
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}
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if (engine_impl)
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impl = e;
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in = BIO_new(BIO_s_file());
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bmd = BIO_new(BIO_f_md());
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if ((in == NULL) || (bmd == NULL)) {
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ERR_print_errors(bio_err);
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goto end;
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}
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if (debug) {
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BIO_set_callback(in, BIO_debug_callback);
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/* needed for windows 3.1 */
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BIO_set_callback_arg(in, (char *)bio_err);
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}
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if (!app_passwd(passinarg, NULL, &passin, 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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if (out_bin == -1) {
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if (keyfile != NULL)
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out_bin = 1;
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else
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out_bin = 0;
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}
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out = bio_open_default(outfile, 'w', out_bin ? FORMAT_BINARY : FORMAT_TEXT);
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if (out == NULL)
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goto end;
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if ((!(mac_name == NULL) + !(keyfile == NULL) + !(hmac_key == NULL)) > 1) {
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BIO_printf(bio_err, "MAC and Signing key cannot both be specified\n");
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goto end;
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}
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if (keyfile != NULL) {
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int type;
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if (want_pub)
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sigkey = load_pubkey(keyfile, keyform, 0, NULL, e, "key file");
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else
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sigkey = load_key(keyfile, keyform, 0, passin, e, "key file");
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if (sigkey == NULL) {
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/*
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* load_[pub]key() has already printed an appropriate message
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*/
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goto end;
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}
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type = EVP_PKEY_id(sigkey);
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if (type == EVP_PKEY_ED25519 || type == EVP_PKEY_ED448) {
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/*
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* We implement PureEdDSA for these which doesn't have a separate
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* digest, and only supports one shot.
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*/
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BIO_printf(bio_err, "Key type not supported for this operation\n");
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goto end;
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}
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}
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if (mac_name != NULL) {
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EVP_PKEY_CTX *mac_ctx = NULL;
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int r = 0;
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if (!init_gen_str(&mac_ctx, mac_name, impl, 0))
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goto mac_end;
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if (macopts != NULL) {
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char *macopt;
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for (i = 0; i < sk_OPENSSL_STRING_num(macopts); i++) {
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macopt = sk_OPENSSL_STRING_value(macopts, i);
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if (pkey_ctrl_string(mac_ctx, macopt) <= 0) {
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BIO_printf(bio_err,
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"MAC parameter error \"%s\"\n", macopt);
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ERR_print_errors(bio_err);
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goto mac_end;
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}
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}
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}
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if (EVP_PKEY_keygen(mac_ctx, &sigkey) <= 0) {
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BIO_puts(bio_err, "Error generating key\n");
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ERR_print_errors(bio_err);
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goto mac_end;
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}
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r = 1;
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mac_end:
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EVP_PKEY_CTX_free(mac_ctx);
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if (r == 0)
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goto end;
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}
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if (hmac_key != NULL) {
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sigkey = EVP_PKEY_new_raw_private_key(EVP_PKEY_HMAC, impl,
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(unsigned char *)hmac_key, -1);
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if (sigkey == NULL)
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goto end;
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}
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if (sigkey != NULL) {
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EVP_MD_CTX *mctx = NULL;
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EVP_PKEY_CTX *pctx = NULL;
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int r;
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if (!BIO_get_md_ctx(bmd, &mctx)) {
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BIO_printf(bio_err, "Error getting context\n");
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ERR_print_errors(bio_err);
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goto end;
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}
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if (do_verify)
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r = EVP_DigestVerifyInit(mctx, &pctx, md, impl, sigkey);
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else
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r = EVP_DigestSignInit(mctx, &pctx, md, impl, sigkey);
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if (!r) {
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BIO_printf(bio_err, "Error setting context\n");
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ERR_print_errors(bio_err);
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goto end;
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}
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if (sigopts != NULL) {
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char *sigopt;
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for (i = 0; i < sk_OPENSSL_STRING_num(sigopts); i++) {
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sigopt = sk_OPENSSL_STRING_value(sigopts, i);
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if (pkey_ctrl_string(pctx, sigopt) <= 0) {
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BIO_printf(bio_err, "parameter error \"%s\"\n", sigopt);
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ERR_print_errors(bio_err);
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goto end;
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}
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}
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}
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}
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/* we use md as a filter, reading from 'in' */
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else {
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EVP_MD_CTX *mctx = NULL;
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if (!BIO_get_md_ctx(bmd, &mctx)) {
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BIO_printf(bio_err, "Error getting context\n");
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ERR_print_errors(bio_err);
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goto end;
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}
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if (md == NULL)
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md = EVP_sha256();
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if (!EVP_DigestInit_ex(mctx, md, impl)) {
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BIO_printf(bio_err, "Error setting digest\n");
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ERR_print_errors(bio_err);
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goto end;
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}
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}
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if (sigfile != NULL && sigkey != NULL) {
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BIO *sigbio = BIO_new_file(sigfile, "rb");
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if (sigbio == NULL) {
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BIO_printf(bio_err, "Error opening signature file %s\n", sigfile);
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ERR_print_errors(bio_err);
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goto end;
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}
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siglen = EVP_PKEY_size(sigkey);
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sigbuf = app_malloc(siglen, "signature buffer");
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siglen = BIO_read(sigbio, sigbuf, siglen);
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BIO_free(sigbio);
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if (siglen <= 0) {
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BIO_printf(bio_err, "Error reading signature file %s\n", sigfile);
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ERR_print_errors(bio_err);
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goto end;
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}
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}
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inp = BIO_push(bmd, in);
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if (md == NULL) {
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EVP_MD_CTX *tctx;
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BIO_get_md_ctx(bmd, &tctx);
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md = EVP_MD_CTX_md(tctx);
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}
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if (argc == 0) {
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BIO_set_fp(in, stdin, BIO_NOCLOSE);
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ret = do_fp(out, buf, inp, separator, out_bin, sigkey, sigbuf,
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siglen, NULL, NULL, "stdin");
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} else {
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const char *md_name = NULL, *sig_name = NULL;
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if (!out_bin) {
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if (sigkey != NULL) {
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const EVP_PKEY_ASN1_METHOD *ameth;
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ameth = EVP_PKEY_get0_asn1(sigkey);
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if (ameth)
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EVP_PKEY_asn1_get0_info(NULL, NULL,
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NULL, NULL, &sig_name, ameth);
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}
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if (md != NULL)
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md_name = EVP_MD_name(md);
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}
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ret = 0;
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for (i = 0; i < argc; i++) {
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int r;
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if (BIO_read_filename(in, argv[i]) <= 0) {
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perror(argv[i]);
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ret++;
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continue;
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} else {
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r = do_fp(out, buf, inp, separator, out_bin, sigkey, sigbuf,
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siglen, sig_name, md_name, argv[i]);
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}
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if (r)
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ret = r;
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(void)BIO_reset(bmd);
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}
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}
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end:
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OPENSSL_clear_free(buf, BUFSIZE);
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BIO_free(in);
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OPENSSL_free(passin);
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BIO_free_all(out);
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EVP_PKEY_free(sigkey);
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sk_OPENSSL_STRING_free(sigopts);
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sk_OPENSSL_STRING_free(macopts);
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OPENSSL_free(sigbuf);
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BIO_free(bmd);
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release_engine(e);
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return ret;
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}
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static void show_digests(const OBJ_NAME *name, void *arg)
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{
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struct doall_dgst_digests *dec = (struct doall_dgst_digests *)arg;
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const EVP_MD *md = NULL;
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/* Filter out signed digests (a.k.a signature algorithms) */
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if (strstr(name->name, "rsa") != NULL || strstr(name->name, "RSA") != NULL)
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return;
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if (!islower((unsigned char)*name->name))
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return;
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/* Filter out message digests that we cannot use */
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md = EVP_get_digestbyname(name->name);
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if (md == NULL)
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return;
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BIO_printf(dec->bio, "-%-25s", name->name);
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if (++dec->n == 3) {
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BIO_printf(dec->bio, "\n");
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dec->n = 0;
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} else {
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BIO_printf(dec->bio, " ");
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}
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}
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/*
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* The newline_escape_filename function performs newline escaping for any
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* filename that contains a newline. This function also takes a pointer
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* to backslash. The backslash pointer is a flag to indicating whether a newline
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* is present in the filename. If a newline is present, the backslash flag is
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* set and the output format will contain a backslash at the beginning of the
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* digest output. This output format is to replicate the output format found
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* in the '*sum' checksum programs. This aims to preserve backward
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* compatibility.
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*/
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static const char *newline_escape_filename(const char *file, int * backslash)
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{
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size_t i, e = 0, length = strlen(file), newline_count = 0, mem_len = 0;
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char *file_cpy = NULL;
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for (i = 0; i < length; i++)
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if (file[i] == '\n')
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newline_count++;
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mem_len = length + newline_count + 1;
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file_cpy = app_malloc(mem_len, file);
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i = 0;
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while(e < length) {
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const char c = file[e];
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if (c == '\n') {
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file_cpy[i++] = '\\';
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file_cpy[i++] = 'n';
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*backslash = 1;
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} else {
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file_cpy[i++] = c;
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}
|
|
e++;
|
|
}
|
|
file_cpy[i] = '\0';
|
|
return (const char*)file_cpy;
|
|
}
|
|
|
|
|
|
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)
|
|
{
|
|
size_t len = BUFSIZE;
|
|
int i, backslash = 0, ret = 1;
|
|
unsigned char *sigbuf = NULL;
|
|
|
|
while (BIO_pending(bp) || !BIO_eof(bp)) {
|
|
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);
|
|
goto end;
|
|
}
|
|
if (i == 0)
|
|
break;
|
|
}
|
|
if (sigin != NULL) {
|
|
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");
|
|
goto end;
|
|
} else {
|
|
BIO_printf(bio_err, "Error Verifying Data\n");
|
|
ERR_print_errors(bio_err);
|
|
goto end;
|
|
}
|
|
ret = 0;
|
|
goto end;
|
|
}
|
|
if (key != NULL) {
|
|
EVP_MD_CTX *ctx;
|
|
int pkey_len;
|
|
BIO_get_md_ctx(bp, &ctx);
|
|
pkey_len = EVP_PKEY_size(key);
|
|
if (pkey_len > BUFSIZE) {
|
|
len = pkey_len;
|
|
sigbuf = app_malloc(len, "Signature buffer");
|
|
buf = sigbuf;
|
|
}
|
|
if (!EVP_DigestSignFinal(ctx, buf, &len)) {
|
|
BIO_printf(bio_err, "Error Signing Data\n");
|
|
ERR_print_errors(bio_err);
|
|
goto end;
|
|
}
|
|
} else {
|
|
len = BIO_gets(bp, (char *)buf, BUFSIZE);
|
|
if ((int)len < 0) {
|
|
ERR_print_errors(bio_err);
|
|
goto end;
|
|
}
|
|
}
|
|
|
|
if (binout) {
|
|
BIO_write(out, buf, len);
|
|
} else if (sep == 2) {
|
|
file = newline_escape_filename(file, &backslash);
|
|
|
|
if (backslash == 1)
|
|
BIO_puts(out, "\\");
|
|
|
|
for (i = 0; i < (int)len; i++)
|
|
BIO_printf(out, "%02x", buf[i]);
|
|
|
|
BIO_printf(out, " *%s\n", file);
|
|
OPENSSL_free((char *)file);
|
|
} else {
|
|
if (sig_name != NULL) {
|
|
BIO_puts(out, sig_name);
|
|
if (md_name != NULL)
|
|
BIO_printf(out, "-%s", md_name);
|
|
BIO_printf(out, "(%s)= ", file);
|
|
} else if (md_name != NULL) {
|
|
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");
|
|
}
|
|
|
|
ret = 0;
|
|
end:
|
|
if (sigbuf != NULL)
|
|
OPENSSL_clear_free(sigbuf, len);
|
|
|
|
return ret;
|
|
}
|