2 * Copyright 2006-2016 The OpenSSL Project Authors. All Rights Reserved.
4 * Licensed under the OpenSSL license (the "License"). You may not use
5 * this file except in compliance with the License. You can obtain a copy
6 * in the file LICENSE in the source distribution or at
7 * https://www.openssl.org/source/license.html
12 #include <openssl/err.h>
13 #include <openssl/pem.h>
14 #include <openssl/evp.h>
21 static EVP_PKEY_CTX *init_ctx(const char *kdfalg, int *pkeysize,
22 const char *keyfile, int keyform, int key_type,
23 char *passinarg, int pkey_op, ENGINE *e,
26 static int setup_peer(EVP_PKEY_CTX *ctx, int peerform, const char *file,
29 static int do_keyop(EVP_PKEY_CTX *ctx, int pkey_op,
30 unsigned char *out, size_t *poutlen,
31 const unsigned char *in, size_t inlen);
33 typedef enum OPTION_choice {
34 OPT_ERR = -1, OPT_EOF = 0, OPT_HELP,
35 OPT_ENGINE, OPT_ENGINE_IMPL, OPT_IN, OPT_OUT,
36 OPT_PUBIN, OPT_CERTIN, OPT_ASN1PARSE, OPT_HEXDUMP, OPT_SIGN,
37 OPT_VERIFY, OPT_VERIFYRECOVER, OPT_REV, OPT_ENCRYPT, OPT_DECRYPT,
38 OPT_DERIVE, OPT_SIGFILE, OPT_INKEY, OPT_PEERKEY, OPT_PASSIN,
39 OPT_PEERFORM, OPT_KEYFORM, OPT_PKEYOPT, OPT_KDF, OPT_KDFLEN
42 OPTIONS pkeyutl_options[] = {
43 {"help", OPT_HELP, '-', "Display this summary"},
44 {"in", OPT_IN, '<', "Input file - default stdin"},
45 {"out", OPT_OUT, '>', "Output file - default stdout"},
46 {"pubin", OPT_PUBIN, '-', "Input is a public key"},
47 {"certin", OPT_CERTIN, '-', "Input is a cert with a public key"},
48 {"asn1parse", OPT_ASN1PARSE, '-', "asn1parse the output data"},
49 {"hexdump", OPT_HEXDUMP, '-', "Hex dump output"},
50 {"sign", OPT_SIGN, '-', "Sign input data with private key"},
51 {"verify", OPT_VERIFY, '-', "Verify with public key"},
52 {"verifyrecover", OPT_VERIFYRECOVER, '-',
53 "Verify with public key, recover original data"},
54 {"rev", OPT_REV, '-', "Reverse the order of the input buffer"},
55 {"encrypt", OPT_ENCRYPT, '-', "Encrypt input data with public key"},
56 {"decrypt", OPT_DECRYPT, '-', "Decrypt input data with private key"},
57 {"derive", OPT_DERIVE, '-', "Derive shared secret"},
58 {"kdf", OPT_KDF, 's', "Use KDF algorithm"},
59 {"kdflen", OPT_KDFLEN, 'p', "KDF algorithm output length"},
60 {"sigfile", OPT_SIGFILE, '<', "Signature file (verify operation only)"},
61 {"inkey", OPT_INKEY, 's', "Input private key file"},
62 {"peerkey", OPT_PEERKEY, 's', "Peer key file used in key derivation"},
63 {"passin", OPT_PASSIN, 's', "Input file pass phrase source"},
64 {"peerform", OPT_PEERFORM, 'E', "Peer key format - default PEM"},
65 {"keyform", OPT_KEYFORM, 'E', "Private key format - default PEM"},
66 {"pkeyopt", OPT_PKEYOPT, 's', "Public key options as opt:value"},
67 #ifndef OPENSSL_NO_ENGINE
68 {"engine", OPT_ENGINE, 's', "Use engine, possibly a hardware device"},
69 {"engine_impl", OPT_ENGINE_IMPL, '-',
70 "Also use engine given by -engine for crypto operations"},
75 int pkeyutl_main(int argc, char **argv)
77 BIO *in = NULL, *out = NULL;
79 EVP_PKEY_CTX *ctx = NULL;
80 char *infile = NULL, *outfile = NULL, *sigfile = NULL, *passinarg = NULL;
81 char hexdump = 0, asn1parse = 0, rev = 0, *prog;
82 unsigned char *buf_in = NULL, *buf_out = NULL, *sig = NULL;
84 int buf_inlen = 0, siglen = -1, keyform = FORMAT_PEM, peerform = FORMAT_PEM;
85 int keysize = -1, pkey_op = EVP_PKEY_OP_SIGN, key_type = KEY_PRIVKEY;
89 const char *inkey = NULL;
90 const char *peerkey = NULL;
91 const char *kdfalg = NULL;
93 STACK_OF(OPENSSL_STRING) *pkeyopts = NULL;
95 prog = opt_init(argc, argv, pkeyutl_options);
96 while ((o = opt_next()) != OPT_EOF) {
101 BIO_printf(bio_err, "%s: Use -help for summary.\n", prog);
104 opt_help(pkeyutl_options);
116 case OPT_ENGINE_IMPL:
126 passinarg = opt_arg();
129 if (!opt_format(opt_arg(), OPT_FMT_PDE, &peerform))
133 if (!opt_format(opt_arg(), OPT_FMT_PDE, &keyform))
137 e = setup_engine(opt_arg(), 0);
140 key_type = KEY_PUBKEY;
152 pkey_op = EVP_PKEY_OP_SIGN;
155 pkey_op = EVP_PKEY_OP_VERIFY;
157 case OPT_VERIFYRECOVER:
158 pkey_op = EVP_PKEY_OP_VERIFYRECOVER;
161 pkey_op = EVP_PKEY_OP_ENCRYPT;
164 pkey_op = EVP_PKEY_OP_DECRYPT;
167 pkey_op = EVP_PKEY_OP_DERIVE;
170 pkey_op = EVP_PKEY_OP_DERIVE;
175 kdflen = atoi(opt_arg());
181 if ((pkeyopts == NULL &&
182 (pkeyopts = sk_OPENSSL_STRING_new_null()) == NULL) ||
183 sk_OPENSSL_STRING_push(pkeyopts, opt_arg()) == 0) {
184 BIO_puts(bio_err, "out of memory\n");
190 argc = opt_num_rest();
194 if (kdfalg != NULL) {
197 "%s: no KDF length given (-kdflen parameter).\n", prog);
200 } else if (inkey == NULL) {
202 "%s: no private key given (-inkey parameter).\n", prog);
204 } else if (peerkey != NULL && pkey_op != EVP_PKEY_OP_DERIVE) {
206 "%s: no peer key given (-peerkey parameter).\n", prog);
209 ctx = init_ctx(kdfalg, &keysize, inkey, keyform, key_type,
210 passinarg, pkey_op, e, engine_impl);
212 BIO_printf(bio_err, "%s: Error initializing context\n", prog);
213 ERR_print_errors(bio_err);
216 if (peerkey != NULL && !setup_peer(ctx, peerform, peerkey, e)) {
217 BIO_printf(bio_err, "%s: Error setting up peer key\n", prog);
218 ERR_print_errors(bio_err);
221 if (pkeyopts != NULL) {
222 int num = sk_OPENSSL_STRING_num(pkeyopts);
225 for (i = 0; i < num; ++i) {
226 const char *opt = sk_OPENSSL_STRING_value(pkeyopts, i);
228 if (pkey_ctrl_string(ctx, opt) <= 0) {
229 BIO_printf(bio_err, "%s: Can't set parameter \"%s\":\n",
231 ERR_print_errors(bio_err);
237 if (sigfile && (pkey_op != EVP_PKEY_OP_VERIFY)) {
239 "%s: Signature file specified for non verify\n", prog);
243 if (!sigfile && (pkey_op == EVP_PKEY_OP_VERIFY)) {
245 "%s: No signature file specified for verify\n", prog);
249 /* FIXME: seed PRNG only if needed */
250 app_RAND_load_file(NULL, 0);
252 if (pkey_op != EVP_PKEY_OP_DERIVE) {
253 in = bio_open_default(infile, 'r', FORMAT_BINARY);
257 out = bio_open_default(outfile, 'w', FORMAT_BINARY);
262 BIO *sigbio = BIO_new_file(sigfile, "rb");
264 BIO_printf(bio_err, "Can't open signature file %s\n", sigfile);
267 siglen = bio_to_mem(&sig, keysize * 10, sigbio);
270 BIO_printf(bio_err, "Error reading signature data\n");
276 /* Read the input data */
277 buf_inlen = bio_to_mem(&buf_in, keysize * 10, in);
279 BIO_printf(bio_err, "Error reading input Data\n");
285 size_t l = (size_t)buf_inlen;
286 for (i = 0; i < l / 2; i++) {
288 buf_in[i] = buf_in[l - 1 - i];
289 buf_in[l - 1 - i] = ctmp;
294 if (pkey_op == EVP_PKEY_OP_VERIFY) {
295 rv = EVP_PKEY_verify(ctx, sig, (size_t)siglen,
296 buf_in, (size_t)buf_inlen);
298 BIO_puts(out, "Signature Verified Successfully\n");
301 BIO_puts(out, "Signature Verification Failure\n");
308 rv = do_keyop(ctx, pkey_op, NULL, (size_t *)&buf_outlen,
309 buf_in, (size_t)buf_inlen);
311 if (rv > 0 && buf_outlen != 0) {
312 buf_out = app_malloc(buf_outlen, "buffer output");
313 rv = do_keyop(ctx, pkey_op,
314 buf_out, (size_t *)&buf_outlen,
315 buf_in, (size_t)buf_inlen);
318 if (pkey_op != EVP_PKEY_OP_DERIVE) {
319 BIO_puts(bio_err, "Public Key operation error\n");
321 BIO_puts(bio_err, "Key derivation failed\n");
323 ERR_print_errors(bio_err);
329 if (!ASN1_parse_dump(out, buf_out, buf_outlen, 1, -1))
330 ERR_print_errors(bio_err);
332 BIO_dump(out, (char *)buf_out, buf_outlen);
334 BIO_write(out, buf_out, buf_outlen);
337 EVP_PKEY_CTX_free(ctx);
341 OPENSSL_free(buf_in);
342 OPENSSL_free(buf_out);
344 sk_OPENSSL_STRING_free(pkeyopts);
348 static EVP_PKEY_CTX *init_ctx(const char *kdfalg, int *pkeysize,
349 const char *keyfile, int keyform, int key_type,
350 char *passinarg, int pkey_op, ENGINE *e,
351 const int engine_impl)
353 EVP_PKEY *pkey = NULL;
354 EVP_PKEY_CTX *ctx = NULL;
359 if (((pkey_op == EVP_PKEY_OP_SIGN) || (pkey_op == EVP_PKEY_OP_DECRYPT)
360 || (pkey_op == EVP_PKEY_OP_DERIVE))
361 && (key_type != KEY_PRIVKEY && kdfalg == NULL)) {
362 BIO_printf(bio_err, "A private key is needed for this operation\n");
365 if (!app_passwd(passinarg, NULL, &passin, NULL)) {
366 BIO_printf(bio_err, "Error getting password\n");
371 pkey = load_key(keyfile, keyform, 0, passin, e, "Private Key");
375 pkey = load_pubkey(keyfile, keyform, 0, NULL, e, "Public Key");
379 x = load_cert(keyfile, keyform, "Certificate");
381 pkey = X509_get_pubkey(x);
391 #ifndef OPENSSL_NO_ENGINE
397 int kdfnid = OBJ_sn2nid(kdfalg);
399 if (kdfnid == NID_undef) {
400 kdfnid = OBJ_ln2nid(kdfalg);
401 if (kdfnid == NID_undef) {
402 BIO_printf(bio_err, "The given KDF \"%s\" is unknown.\n",
407 ctx = EVP_PKEY_CTX_new_id(kdfnid, impl);
411 *pkeysize = EVP_PKEY_size(pkey);
412 ctx = EVP_PKEY_CTX_new(pkey, impl);
420 case EVP_PKEY_OP_SIGN:
421 rv = EVP_PKEY_sign_init(ctx);
424 case EVP_PKEY_OP_VERIFY:
425 rv = EVP_PKEY_verify_init(ctx);
428 case EVP_PKEY_OP_VERIFYRECOVER:
429 rv = EVP_PKEY_verify_recover_init(ctx);
432 case EVP_PKEY_OP_ENCRYPT:
433 rv = EVP_PKEY_encrypt_init(ctx);
436 case EVP_PKEY_OP_DECRYPT:
437 rv = EVP_PKEY_decrypt_init(ctx);
440 case EVP_PKEY_OP_DERIVE:
441 rv = EVP_PKEY_derive_init(ctx);
446 EVP_PKEY_CTX_free(ctx);
451 OPENSSL_free(passin);
456 static int setup_peer(EVP_PKEY_CTX *ctx, int peerform, const char *file,
459 EVP_PKEY *peer = NULL;
460 ENGINE *engine = NULL;
463 if (peerform == FORMAT_ENGINE)
465 peer = load_pubkey(file, peerform, 0, NULL, engine, "Peer Key");
467 BIO_printf(bio_err, "Error reading peer key %s\n", file);
468 ERR_print_errors(bio_err);
472 ret = EVP_PKEY_derive_set_peer(ctx, peer);
476 ERR_print_errors(bio_err);
480 static int do_keyop(EVP_PKEY_CTX *ctx, int pkey_op,
481 unsigned char *out, size_t *poutlen,
482 const unsigned char *in, size_t inlen)
486 case EVP_PKEY_OP_VERIFYRECOVER:
487 rv = EVP_PKEY_verify_recover(ctx, out, poutlen, in, inlen);
490 case EVP_PKEY_OP_SIGN:
491 rv = EVP_PKEY_sign(ctx, out, poutlen, in, inlen);
494 case EVP_PKEY_OP_ENCRYPT:
495 rv = EVP_PKEY_encrypt(ctx, out, poutlen, in, inlen);
498 case EVP_PKEY_OP_DECRYPT:
499 rv = EVP_PKEY_decrypt(ctx, out, poutlen, in, inlen);
502 case EVP_PKEY_OP_DERIVE:
503 rv = EVP_PKEY_derive(ctx, out, poutlen);