pkeyutl.c revision 325335 
1/*
2 * Written by Dr Stephen N Henson (steve@openssl.org) for the OpenSSL project
3 * 2006.
4 */
5/* ====================================================================
6 * Copyright (c) 2006 The OpenSSL Project.  All rights reserved.
7 *
8 * Redistribution and use in source and binary forms, with or without
9 * modification, are permitted provided that the following conditions
10 * are met:
11 *
12 * 1. Redistributions of source code must retain the above copyright
13 *    notice, this list of conditions and the following disclaimer.
14 *
15 * 2. Redistributions in binary form must reproduce the above copyright
16 *    notice, this list of conditions and the following disclaimer in
17 *    the documentation and/or other materials provided with the
18 *    distribution.
19 *
20 * 3. All advertising materials mentioning features or use of this
21 *    software must display the following acknowledgment:
22 *    "This product includes software developed by the OpenSSL Project
23 *    for use in the OpenSSL Toolkit. (http://www.OpenSSL.org/)"
24 *
25 * 4. The names "OpenSSL Toolkit" and "OpenSSL Project" must not be used to
26 *    endorse or promote products derived from this software without
27 *    prior written permission. For written permission, please contact
28 *    licensing@OpenSSL.org.
29 *
30 * 5. Products derived from this software may not be called "OpenSSL"
31 *    nor may "OpenSSL" appear in their names without prior written
32 *    permission of the OpenSSL Project.
33 *
34 * 6. Redistributions of any form whatsoever must retain the following
35 *    acknowledgment:
36 *    "This product includes software developed by the OpenSSL Project
37 *    for use in the OpenSSL Toolkit (http://www.OpenSSL.org/)"
38 *
39 * THIS SOFTWARE IS PROVIDED BY THE OpenSSL PROJECT ``AS IS'' AND ANY
40 * EXPRESSED OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
41 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
42 * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE OpenSSL PROJECT OR
43 * ITS CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
44 * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
45 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
46 * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
47 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
48 * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
49 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED
50 * OF THE POSSIBILITY OF SUCH DAMAGE.
51 * ====================================================================
52 *
53 * This product includes cryptographic software written by Eric Young
54 * (eay@cryptsoft.com).  This product includes software written by Tim
55 * Hudson (tjh@cryptsoft.com).
56 *
57 */
58
59#include "apps.h"
60#include <string.h>
61#include <openssl/err.h>
62#include <openssl/pem.h>
63#include <openssl/evp.h>
64
65#define KEY_PRIVKEY     1
66#define KEY_PUBKEY      2
67#define KEY_CERT        3
68
69static void usage(void);
70
71#undef PROG
72
73#define PROG pkeyutl_main
74
75static EVP_PKEY_CTX *init_ctx(int *pkeysize,
76                              const char *keyfile, int keyform, int key_type,
77                              char *passargin, int pkey_op, ENGINE *e,
78                              int   impl);
79
80static int setup_peer(BIO *err, EVP_PKEY_CTX *ctx, int peerform,
81                      const char *file, ENGINE* e);
82
83static int do_keyop(EVP_PKEY_CTX *ctx, int pkey_op,
84                    unsigned char *out, size_t *poutlen,
85                    unsigned char *in, size_t inlen);
86
87int MAIN(int argc, char **);
88
89int MAIN(int argc, char **argv)
90{
91    BIO *in = NULL, *out = NULL;
92    char *infile = NULL, *outfile = NULL, *sigfile = NULL;
93    ENGINE *e = NULL;
94    int pkey_op = EVP_PKEY_OP_SIGN, key_type = KEY_PRIVKEY;
95    int keyform = FORMAT_PEM, peerform = FORMAT_PEM;
96    char badarg = 0, rev = 0;
97    char hexdump = 0, asn1parse = 0;
98    EVP_PKEY_CTX *ctx = NULL;
99    char *passargin = NULL;
100    int keysize = -1;
101    int engine_impl = 0;
102    unsigned char *buf_in = NULL, *buf_out = NULL, *sig = NULL;
103    size_t buf_outlen = 0;
104    int buf_inlen = 0, siglen = -1;
105    const char *inkey = NULL;
106    const char *peerkey = NULL;
107    STACK_OF(OPENSSL_STRING) *pkeyopts = NULL;
108
109    int ret = 1, rv = -1;
110
111    argc--;
112    argv++;
113
114    if (!bio_err)
115        bio_err = BIO_new_fp(stderr, BIO_NOCLOSE);
116
117    if (!load_config(bio_err, NULL))
118        goto end;
119    ERR_load_crypto_strings();
120    OpenSSL_add_all_algorithms();
121
122    while (argc >= 1) {
123        if (!strcmp(*argv, "-in")) {
124            if (--argc < 1)
125                badarg = 1;
126            else
127                infile = *(++argv);
128        } else if (!strcmp(*argv, "-out")) {
129            if (--argc < 1)
130                badarg = 1;
131            else
132                outfile = *(++argv);
133        } else if (!strcmp(*argv, "-sigfile")) {
134            if (--argc < 1)
135                badarg = 1;
136            else
137                sigfile = *(++argv);
138        } else if (!strcmp(*argv, "-inkey")) {
139            if (--argc < 1)
140                badarg = 1;
141            else
142                inkey = *++argv;
143        } else if (!strcmp(*argv, "-peerkey")) {
144            if (--argc < 1)
145                badarg = 1;
146            else
147                peerkey = *++argv;
148        } else if (!strcmp(*argv, "-passin")) {
149            if (--argc < 1)
150                badarg = 1;
151            else
152                passargin = *(++argv);
153        } else if (strcmp(*argv, "-peerform") == 0) {
154            if (--argc < 1)
155                badarg = 1;
156            else
157                peerform = str2fmt(*(++argv));
158        } else if (strcmp(*argv, "-keyform") == 0) {
159            if (--argc < 1)
160                badarg = 1;
161            else
162                keyform = str2fmt(*(++argv));
163        }
164#ifndef OPENSSL_NO_ENGINE
165        else if (!strcmp(*argv, "-engine")) {
166            if (--argc < 1)
167                badarg = 1;
168            else
169                e = setup_engine(bio_err, *(++argv), 0);
170        } else if (!strcmp(*argv, "-engine_impl")) {
171                engine_impl = 1;
172        }
173#endif
174        else if (!strcmp(*argv, "-pubin"))
175            key_type = KEY_PUBKEY;
176        else if (!strcmp(*argv, "-certin"))
177            key_type = KEY_CERT;
178        else if (!strcmp(*argv, "-asn1parse"))
179            asn1parse = 1;
180        else if (!strcmp(*argv, "-hexdump"))
181            hexdump = 1;
182        else if (!strcmp(*argv, "-sign"))
183            pkey_op = EVP_PKEY_OP_SIGN;
184        else if (!strcmp(*argv, "-verify"))
185            pkey_op = EVP_PKEY_OP_VERIFY;
186        else if (!strcmp(*argv, "-verifyrecover"))
187            pkey_op = EVP_PKEY_OP_VERIFYRECOVER;
188        else if (!strcmp(*argv, "-encrypt"))
189            pkey_op = EVP_PKEY_OP_ENCRYPT;
190        else if (!strcmp(*argv, "-decrypt"))
191            pkey_op = EVP_PKEY_OP_DECRYPT;
192        else if (!strcmp(*argv, "-derive"))
193            pkey_op = EVP_PKEY_OP_DERIVE;
194        else if (!strcmp(*argv, "-rev"))
195            rev = 1;
196        else if (strcmp(*argv, "-pkeyopt") == 0) {
197            if (--argc < 1)
198                badarg = 1;
199            else if ((pkeyopts == NULL &&
200                     (pkeyopts = sk_OPENSSL_STRING_new_null()) == NULL) ||
201                    sk_OPENSSL_STRING_push(pkeyopts, *++argv) == 0) {
202                BIO_puts(bio_err, "out of memory\n");
203                goto end;
204            }
205        } else
206            badarg = 1;
207        if (badarg) {
208            usage();
209            goto end;
210        }
211        argc--;
212        argv++;
213    }
214
215    if (inkey == NULL ||
216        (peerkey != NULL && pkey_op != EVP_PKEY_OP_DERIVE)) {
217        usage();
218        goto end;
219    }
220    ctx = init_ctx(&keysize, inkey, keyform, key_type,
221                   passargin, pkey_op, e, engine_impl);
222    if (!ctx) {
223        BIO_puts(bio_err, "Error initializing context\n");
224        ERR_print_errors(bio_err);
225        goto end;
226    }
227    if (peerkey != NULL && !setup_peer(bio_err, ctx, peerform, peerkey, e)) {
228        BIO_puts(bio_err, "Error setting up peer key\n");
229        ERR_print_errors(bio_err);
230        goto end;
231    }
232    if (pkeyopts != NULL) {
233        int num = sk_OPENSSL_STRING_num(pkeyopts);
234        int i;
235
236        for (i = 0; i < num; ++i) {
237            const char *opt = sk_OPENSSL_STRING_value(pkeyopts, i);
238
239            if (pkey_ctrl_string(ctx, opt) <= 0) {
240                BIO_puts(bio_err, "parameter setting error\n");
241                ERR_print_errors(bio_err);
242                goto end;
243            }
244        }
245    }
246
247    if (sigfile && (pkey_op != EVP_PKEY_OP_VERIFY)) {
248        BIO_puts(bio_err, "Signature file specified for non verify\n");
249        goto end;
250    }
251
252    if (!sigfile && (pkey_op == EVP_PKEY_OP_VERIFY)) {
253        BIO_puts(bio_err, "No signature file specified for verify\n");
254        goto end;
255    }
256
257/* FIXME: seed PRNG only if needed */
258    app_RAND_load_file(NULL, bio_err, 0);
259
260    if (pkey_op != EVP_PKEY_OP_DERIVE) {
261        if (infile) {
262            if (!(in = BIO_new_file(infile, "rb"))) {
263                BIO_puts(bio_err, "Error Opening Input File\n");
264                ERR_print_errors(bio_err);
265                goto end;
266            }
267        } else
268            in = BIO_new_fp(stdin, BIO_NOCLOSE);
269    }
270
271    if (outfile) {
272        if (!(out = BIO_new_file(outfile, "wb"))) {
273            BIO_printf(bio_err, "Error Creating Output File\n");
274            ERR_print_errors(bio_err);
275            goto end;
276        }
277    } else {
278        out = BIO_new_fp(stdout, BIO_NOCLOSE);
279#ifdef OPENSSL_SYS_VMS
280        {
281            BIO *tmpbio = BIO_new(BIO_f_linebuffer());
282            out = BIO_push(tmpbio, out);
283        }
284#endif
285    }
286
287    if (sigfile) {
288        BIO *sigbio = BIO_new_file(sigfile, "rb");
289        if (!sigbio) {
290            BIO_printf(bio_err, "Can't open signature file %s\n", sigfile);
291            goto end;
292        }
293        siglen = bio_to_mem(&sig, keysize * 10, sigbio);
294        BIO_free(sigbio);
295        if (siglen < 0) {
296            BIO_printf(bio_err, "Error reading signature data\n");
297            goto end;
298        }
299    }
300
301    if (in) {
302        /* Read the input data */
303        buf_inlen = bio_to_mem(&buf_in, keysize * 10, in);
304        if (buf_inlen < 0) {
305            BIO_printf(bio_err, "Error reading input Data\n");
306            exit(1);
307        }
308        if (rev) {
309            size_t i;
310            unsigned char ctmp;
311            size_t l = (size_t)buf_inlen;
312            for (i = 0; i < l / 2; i++) {
313                ctmp = buf_in[i];
314                buf_in[i] = buf_in[l - 1 - i];
315                buf_in[l - 1 - i] = ctmp;
316            }
317        }
318    }
319
320    if (pkey_op == EVP_PKEY_OP_VERIFY) {
321        rv = EVP_PKEY_verify(ctx, sig, (size_t)siglen,
322                             buf_in, (size_t)buf_inlen);
323        if (rv == 0)
324            BIO_puts(out, "Signature Verification Failure\n");
325        else if (rv == 1) {
326            BIO_puts(out, "Signature Verified Successfully\n");
327            ret = 0;
328        }
329        if (rv >= 0)
330            goto end;
331    } else {
332        rv = do_keyop(ctx, pkey_op, NULL, (size_t *)&buf_outlen,
333                      buf_in, (size_t)buf_inlen);
334        if (rv > 0 && buf_outlen != 0) {
335            buf_out = OPENSSL_malloc(buf_outlen);
336            if (!buf_out)
337                rv = -1;
338            else
339                rv = do_keyop(ctx, pkey_op,
340                              buf_out, (size_t *)&buf_outlen,
341                              buf_in, (size_t)buf_inlen);
342        }
343    }
344
345    if (rv <= 0) {
346        BIO_printf(bio_err, "Public Key operation error\n");
347        ERR_print_errors(bio_err);
348        goto end;
349    }
350    ret = 0;
351    if (asn1parse) {
352        if (!ASN1_parse_dump(out, buf_out, buf_outlen, 1, -1))
353            ERR_print_errors(bio_err);
354    } else if (hexdump)
355        BIO_dump(out, (char *)buf_out, buf_outlen);
356    else
357        BIO_write(out, buf_out, buf_outlen);
358
359 end:
360    if (ctx)
361        EVP_PKEY_CTX_free(ctx);
362    release_engine(e);
363    BIO_free(in);
364    BIO_free_all(out);
365    if (buf_in != NULL)
366        OPENSSL_free(buf_in);
367    if (buf_out != NULL)
368        OPENSSL_free(buf_out);
369    if (sig != NULL)
370        OPENSSL_free(sig);
371    if (pkeyopts != NULL)
372        sk_OPENSSL_STRING_free(pkeyopts);
373    return ret;
374}
375
376static void usage()
377{
378    BIO_printf(bio_err, "Usage: pkeyutl [options]\n");
379    BIO_printf(bio_err, "-in file        input file\n");
380    BIO_printf(bio_err, "-out file       output file\n");
381    BIO_printf(bio_err,
382               "-sigfile file signature file (verify operation only)\n");
383    BIO_printf(bio_err, "-inkey file     input key\n");
384    BIO_printf(bio_err, "-keyform arg    private key format - default PEM\n");
385    BIO_printf(bio_err, "-pubin          input is a public key\n");
386    BIO_printf(bio_err,
387               "-certin         input is a certificate carrying a public key\n");
388    BIO_printf(bio_err, "-pkeyopt X:Y    public key options\n");
389    BIO_printf(bio_err, "-sign           sign with private key\n");
390    BIO_printf(bio_err, "-verify         verify with public key\n");
391    BIO_printf(bio_err,
392               "-verifyrecover  verify with public key, recover original data\n");
393    BIO_printf(bio_err, "-encrypt        encrypt with public key\n");
394    BIO_printf(bio_err, "-decrypt        decrypt with private key\n");
395    BIO_printf(bio_err, "-derive         derive shared secret\n");
396    BIO_printf(bio_err, "-hexdump        hex dump output\n");
397#ifndef OPENSSL_NO_ENGINE
398    BIO_printf(bio_err,
399               "-engine e       use engine e, maybe a hardware device, for loading keys.\n");
400    BIO_printf(bio_err, "-engine_impl    also use engine given by -engine for crypto operations\n");
401#endif
402    BIO_printf(bio_err, "-passin arg     pass phrase source\n");
403
404}
405
406static EVP_PKEY_CTX *init_ctx(int *pkeysize,
407                              const char *keyfile, int keyform, int key_type,
408                              char *passargin, int pkey_op, ENGINE *e,
409                              int   engine_impl)
410{
411    EVP_PKEY *pkey = NULL;
412    EVP_PKEY_CTX *ctx = NULL;
413    ENGINE *impl = NULL;
414    char *passin = NULL;
415    int rv = -1;
416    X509 *x;
417    if (((pkey_op == EVP_PKEY_OP_SIGN) || (pkey_op == EVP_PKEY_OP_DECRYPT)
418         || (pkey_op == EVP_PKEY_OP_DERIVE))
419        && (key_type != KEY_PRIVKEY)) {
420        BIO_printf(bio_err, "A private key is needed for this operation\n");
421        goto end;
422    }
423    if (!app_passwd(bio_err, passargin, NULL, &passin, NULL)) {
424        BIO_printf(bio_err, "Error getting password\n");
425        goto end;
426    }
427    switch (key_type) {
428    case KEY_PRIVKEY:
429        pkey = load_key(bio_err, keyfile, keyform, 0,
430                        passin, e, "Private Key");
431        break;
432
433    case KEY_PUBKEY:
434        pkey = load_pubkey(bio_err, keyfile, keyform, 0,
435                           NULL, e, "Public Key");
436        break;
437
438    case KEY_CERT:
439        x = load_cert(bio_err, keyfile, keyform, NULL, e, "Certificate");
440        if (x) {
441            pkey = X509_get_pubkey(x);
442            X509_free(x);
443        }
444        break;
445
446    }
447
448    *pkeysize = EVP_PKEY_size(pkey);
449
450    if (!pkey)
451        goto end;
452
453#ifndef OPENSSL_NO_ENGINE
454    if (engine_impl)
455	impl = e;
456#endif
457
458    ctx = EVP_PKEY_CTX_new(pkey, impl);
459
460    EVP_PKEY_free(pkey);
461
462    if (!ctx)
463        goto end;
464
465    switch (pkey_op) {
466    case EVP_PKEY_OP_SIGN:
467        rv = EVP_PKEY_sign_init(ctx);
468        break;
469
470    case EVP_PKEY_OP_VERIFY:
471        rv = EVP_PKEY_verify_init(ctx);
472        break;
473
474    case EVP_PKEY_OP_VERIFYRECOVER:
475        rv = EVP_PKEY_verify_recover_init(ctx);
476        break;
477
478    case EVP_PKEY_OP_ENCRYPT:
479        rv = EVP_PKEY_encrypt_init(ctx);
480        break;
481
482    case EVP_PKEY_OP_DECRYPT:
483        rv = EVP_PKEY_decrypt_init(ctx);
484        break;
485
486    case EVP_PKEY_OP_DERIVE:
487        rv = EVP_PKEY_derive_init(ctx);
488        break;
489    }
490
491    if (rv <= 0) {
492        EVP_PKEY_CTX_free(ctx);
493        ctx = NULL;
494    }
495
496 end:
497
498    if (passin)
499        OPENSSL_free(passin);
500
501    return ctx;
502
503}
504
505static int setup_peer(BIO *err, EVP_PKEY_CTX *ctx, int peerform,
506                      const char *file, ENGINE* e)
507{
508    EVP_PKEY *peer = NULL;
509    ENGINE* engine = NULL;
510    int ret;
511
512    if (peerform == FORMAT_ENGINE)
513        engine = e;
514    peer = load_pubkey(bio_err, file, peerform, 0, NULL, engine, "Peer Key");
515
516    if (!peer) {
517        BIO_printf(bio_err, "Error reading peer key %s\n", file);
518        ERR_print_errors(err);
519        return 0;
520    }
521
522    ret = EVP_PKEY_derive_set_peer(ctx, peer);
523
524    EVP_PKEY_free(peer);
525    if (ret <= 0)
526        ERR_print_errors(err);
527    return ret;
528}
529
530static int do_keyop(EVP_PKEY_CTX *ctx, int pkey_op,
531                    unsigned char *out, size_t *poutlen,
532                    unsigned char *in, size_t inlen)
533{
534    int rv = 0;
535    switch (pkey_op) {
536    case EVP_PKEY_OP_VERIFYRECOVER:
537        rv = EVP_PKEY_verify_recover(ctx, out, poutlen, in, inlen);
538        break;
539
540    case EVP_PKEY_OP_SIGN:
541        rv = EVP_PKEY_sign(ctx, out, poutlen, in, inlen);
542        break;
543
544    case EVP_PKEY_OP_ENCRYPT:
545        rv = EVP_PKEY_encrypt(ctx, out, poutlen, in, inlen);
546        break;
547
548    case EVP_PKEY_OP_DECRYPT:
549        rv = EVP_PKEY_decrypt(ctx, out, poutlen, in, inlen);
550        break;
551
552    case EVP_PKEY_OP_DERIVE:
553        rv = EVP_PKEY_derive(ctx, out, poutlen);
554        break;
555
556    }
557    return rv;
558}
559