apps/pkeyutl.c

   1 /*
   2  * Copyright 2006-2020 The OpenSSL Project Authors. All Rights Reserved.
   3  *
   4  * Licensed under the Apache License 2.0 (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
   8  */
   9
  10 #include "apps.h"
  11 #include "progs.h"
  12 #include <string.h>
  13 #include <openssl/err.h>
  14 #include <openssl/pem.h>
  15 #include <openssl/evp.h>
  16 #include <sys/stat.h>
  17
  18 #define KEY_NONE        0
  19 #define KEY_PRIVKEY     1
  20 #define KEY_PUBKEY      2
  21 #define KEY_CERT        3
  22
  23 static EVP_PKEY_CTX *init_ctx(const char *kdfalg, int *pkeysize,
  24                               const char *keyfile, int keyform, int key_type,
  25                               char *passinarg, int pkey_op, ENGINE *e,
  26                               const int impl, int rawin, EVP_PKEY **ppkey);
  27
  28 static int setup_peer(EVP_PKEY_CTX *ctx, int peerform, const char *file,
  29                       ENGINE *e);
  30
  31 static int do_keyop(EVP_PKEY_CTX *ctx, int pkey_op,
  32                     unsigned char *out, size_t *poutlen,
  33                     const unsigned char *in, size_t inlen);
  34
  35 static int do_raw_keyop(int pkey_op, EVP_PKEY_CTX *ctx,
  36                         const EVP_MD *md, EVP_PKEY *pkey, BIO *in,
  37                         int filesize, unsigned char *sig, int siglen,
  38                         unsigned char **out, size_t *poutlen);
  39
  40 typedef enum OPTION_choice {
  41     OPT_ERR = -1, OPT_EOF = 0, OPT_HELP,
  42     OPT_ENGINE, OPT_ENGINE_IMPL, OPT_IN, OPT_OUT,
  43     OPT_PUBIN, OPT_CERTIN, OPT_ASN1PARSE, OPT_HEXDUMP, OPT_SIGN,
  44     OPT_VERIFY, OPT_VERIFYRECOVER, OPT_REV, OPT_ENCRYPT, OPT_DECRYPT,
  45     OPT_DERIVE, OPT_SIGFILE, OPT_INKEY, OPT_PEERKEY, OPT_PASSIN,
  46     OPT_PEERFORM, OPT_KEYFORM, OPT_PKEYOPT, OPT_PKEYOPT_PASSIN, OPT_KDF,
  47     OPT_KDFLEN, OPT_R_ENUM, OPT_PROV_ENUM,
  48     OPT_RAWIN, OPT_DIGEST
  49 } OPTION_CHOICE;
  50
  51 const OPTIONS pkeyutl_options[] = {
  52     OPT_SECTION("General"),
  53     {"help", OPT_HELP, '-', "Display this summary"},
  54 #ifndef OPENSSL_NO_ENGINE
  55     {"engine", OPT_ENGINE, 's', "Use engine, possibly a hardware device"},
  56     {"engine_impl", OPT_ENGINE_IMPL, '-',
  57      "Also use engine given by -engine for crypto operations"},
  58 #endif
  59     {"sign", OPT_SIGN, '-', "Sign input data with private key"},
  60     {"verify", OPT_VERIFY, '-', "Verify with public key"},
  61     {"encrypt", OPT_ENCRYPT, '-', "Encrypt input data with public key"},
  62     {"decrypt", OPT_DECRYPT, '-', "Decrypt input data with private key"},
  63     {"derive", OPT_DERIVE, '-', "Derive shared secret"},
  64
  65     OPT_SECTION("Input"),
  66     {"in", OPT_IN, '<', "Input file - default stdin"},
  67     {"rawin", OPT_RAWIN, '-', "Indicate the input data is in raw form"},
  68     {"pubin", OPT_PUBIN, '-', "Input is a public key"},
  69     {"inkey", OPT_INKEY, 's', "Input private key file"},
  70     {"passin", OPT_PASSIN, 's', "Input file pass phrase source"},
  71     {"peerkey", OPT_PEERKEY, 's', "Peer key file used in key derivation"},
  72     {"peerform", OPT_PEERFORM, 'E', "Peer key format - default PEM"},
  73     {"certin", OPT_CERTIN, '-', "Input is a cert with a public key"},
  74     {"rev", OPT_REV, '-', "Reverse the order of the input buffer"},
  75     {"sigfile", OPT_SIGFILE, '<', "Signature file (verify operation only)"},
  76     {"keyform", OPT_KEYFORM, 'E', "Private key format - default PEM"},
  77
  78     OPT_SECTION("Output"),
  79     {"out", OPT_OUT, '>', "Output file - default stdout"},
  80     {"asn1parse", OPT_ASN1PARSE, '-', "asn1parse the output data"},
  81     {"hexdump", OPT_HEXDUMP, '-', "Hex dump output"},
  82     {"verifyrecover", OPT_VERIFYRECOVER, '-',
  83      "Verify with public key, recover original data"},
  84
  85     OPT_SECTION("Signing/Derivation"),
  86     {"digest", OPT_DIGEST, 's',
  87      "Specify the digest algorithm when signing the raw input data"},
  88     {"pkeyopt", OPT_PKEYOPT, 's', "Public key options as opt:value"},
  89     {"pkeyopt_passin", OPT_PKEYOPT_PASSIN, 's',
  90      "Public key option that is read as a passphrase argument opt:passphrase"},
  91     {"kdf", OPT_KDF, 's', "Use KDF algorithm"},
  92     {"kdflen", OPT_KDFLEN, 'p', "KDF algorithm output length"},
  93
  94     OPT_R_OPTIONS,
  95     OPT_PROV_OPTIONS,
  96     {NULL}
  97 };
  98
  99 int pkeyutl_main(int argc, char **argv)
 100 {
 101     BIO *in = NULL, *out = NULL;
 102     ENGINE *e = NULL;
 103     EVP_PKEY_CTX *ctx = NULL;
 104     EVP_PKEY *pkey = NULL;
 105     char *infile = NULL, *outfile = NULL, *sigfile = NULL, *passinarg = NULL;
 106     char hexdump = 0, asn1parse = 0, rev = 0, *prog;
 107     unsigned char *buf_in = NULL, *buf_out = NULL, *sig = NULL;
 108     OPTION_CHOICE o;
 109     int buf_inlen = 0, siglen = -1, keyform = FORMAT_PEM, peerform = FORMAT_PEM;
 110     int keysize = -1, pkey_op = EVP_PKEY_OP_SIGN, key_type = KEY_PRIVKEY;
 111     int engine_impl = 0;
 112     int ret = 1, rv = -1;
 113     size_t buf_outlen;
 114     const char *inkey = NULL;
 115     const char *peerkey = NULL;
 116     const char *kdfalg = NULL;
 117     int kdflen = 0;
 118     STACK_OF(OPENSSL_STRING) *pkeyopts = NULL;
 119     STACK_OF(OPENSSL_STRING) *pkeyopts_passin = NULL;
 120     int rawin = 0;
 121     const EVP_MD *md = NULL;
 122     int filesize = -1;
 123
 124     prog = opt_init(argc, argv, pkeyutl_options);
 125     while ((o = opt_next()) != OPT_EOF) {
 126         switch (o) {
 127         case OPT_EOF:
 128         case OPT_ERR:
 129  opthelp:
 130             BIO_printf(bio_err, "%s: Use -help for summary.\n", prog);
 131             goto end;
 132         case OPT_HELP:
 133             opt_help(pkeyutl_options);
 134             ret = 0;
 135             goto end;
 136         case OPT_IN:
 137             infile = opt_arg();
 138             break;
 139         case OPT_OUT:
 140             outfile = opt_arg();
 141             break;
 142         case OPT_SIGFILE:
 143             sigfile = opt_arg();
 144             break;
 145         case OPT_ENGINE_IMPL:
 146             engine_impl = 1;
 147             break;
 148         case OPT_INKEY:
 149             inkey = opt_arg();
 150             break;
 151         case OPT_PEERKEY:
 152             peerkey = opt_arg();
 153             break;
 154         case OPT_PASSIN:
 155             passinarg = opt_arg();
 156             break;
 157         case OPT_PEERFORM:
 158             if (!opt_format(opt_arg(), OPT_FMT_PDE, &peerform))
 159                 goto opthelp;
 160             break;
 161         case OPT_KEYFORM:
 162             if (!opt_format(opt_arg(), OPT_FMT_PDE, &keyform))
 163                 goto opthelp;
 164             break;
 165         case OPT_R_CASES:
 166             if (!opt_rand(o))
 167                 goto end;
 168             break;
 169         case OPT_PROV_CASES:
 170             if (!opt_provider(o))
 171                 goto end;
 172             break;
 173         case OPT_ENGINE:
 174             e = setup_engine(opt_arg(), 0);
 175             break;
 176         case OPT_PUBIN:
 177             key_type = KEY_PUBKEY;
 178             break;
 179         case OPT_CERTIN:
 180             key_type = KEY_CERT;
 181             break;
 182         case OPT_ASN1PARSE:
 183             asn1parse = 1;
 184             break;
 185         case OPT_HEXDUMP:
 186             hexdump = 1;
 187             break;
 188         case OPT_SIGN:
 189             pkey_op = EVP_PKEY_OP_SIGN;
 190             break;
 191         case OPT_VERIFY:
 192             pkey_op = EVP_PKEY_OP_VERIFY;
 193             break;
 194         case OPT_VERIFYRECOVER:
 195             pkey_op = EVP_PKEY_OP_VERIFYRECOVER;
 196             break;
 197         case OPT_ENCRYPT:
 198             pkey_op = EVP_PKEY_OP_ENCRYPT;
 199             break;
 200         case OPT_DECRYPT:
 201             pkey_op = EVP_PKEY_OP_DECRYPT;
 202             break;
 203         case OPT_DERIVE:
 204             pkey_op = EVP_PKEY_OP_DERIVE;
 205             break;
 206         case OPT_KDF:
 207             pkey_op = EVP_PKEY_OP_DERIVE;
 208             key_type = KEY_NONE;
 209             kdfalg = opt_arg();
 210             break;
 211         case OPT_KDFLEN:
 212             kdflen = atoi(opt_arg());
 213             break;
 214         case OPT_REV:
 215             rev = 1;
 216             break;
 217         case OPT_PKEYOPT:
 218             if ((pkeyopts == NULL &&
 219                  (pkeyopts = sk_OPENSSL_STRING_new_null()) == NULL) ||
 220                 sk_OPENSSL_STRING_push(pkeyopts, opt_arg()) == 0) {
 221                 BIO_puts(bio_err, "out of memory\n");
 222                 goto end;
 223             }
 224             break;
 225         case OPT_PKEYOPT_PASSIN:
 226             if ((pkeyopts_passin == NULL &&
 227                  (pkeyopts_passin = sk_OPENSSL_STRING_new_null()) == NULL) ||
 228                 sk_OPENSSL_STRING_push(pkeyopts_passin, opt_arg()) == 0) {
 229                 BIO_puts(bio_err, "out of memory\n");
 230                 goto end;
 231             }
 232             break;
 233         case OPT_RAWIN:
 234             rawin = 1;
 235             break;
 236         case OPT_DIGEST:
 237             if (!opt_md(opt_arg(), &md))
 238                 goto end;
 239             break;
 240         }
 241     }
 242     argc = opt_num_rest();
 243     if (argc != 0)
 244         goto opthelp;
 245
 246     if (rawin && pkey_op != EVP_PKEY_OP_SIGN && pkey_op != EVP_PKEY_OP_VERIFY) {
 247         BIO_printf(bio_err,
 248                    "%s: -rawin can only be used with -sign or -verify\n",
 249                    prog);
 250         goto opthelp;
 251     }
 252
 253     if (md != NULL && !rawin) {
 254         BIO_printf(bio_err,
 255                    "%s: -digest can only be used with -rawin\n",
 256                    prog);
 257         goto opthelp;
 258     }
 259
 260     if (rawin && rev) {
 261         BIO_printf(bio_err, "%s: -rev cannot be used with raw input\n",
 262                    prog);
 263         goto opthelp;
 264     }
 265
 266     if (kdfalg != NULL) {
 267         if (kdflen == 0) {
 268             BIO_printf(bio_err,
 269                        "%s: no KDF length given (-kdflen parameter).\n", prog);
 270             goto opthelp;
 271         }
 272     } else if (inkey == NULL) {
 273         BIO_printf(bio_err,
 274                    "%s: no private key given (-inkey parameter).\n", prog);
 275         goto opthelp;
 276     } else if (peerkey != NULL && pkey_op != EVP_PKEY_OP_DERIVE) {
 277         BIO_printf(bio_err,
 278                    "%s: no peer key given (-peerkey parameter).\n", prog);
 279         goto opthelp;
 280     }
 281     ctx = init_ctx(kdfalg, &keysize, inkey, keyform, key_type,
 282                    passinarg, pkey_op, e, engine_impl, rawin, &pkey);
 283     if (ctx == NULL) {
 284         BIO_printf(bio_err, "%s: Error initializing context\n", prog);
 285         ERR_print_errors(bio_err);
 286         goto end;
 287     }
 288     if (peerkey != NULL && !setup_peer(ctx, peerform, peerkey, e)) {
 289         BIO_printf(bio_err, "%s: Error setting up peer key\n", prog);
 290         ERR_print_errors(bio_err);
 291         goto end;
 292     }
 293     if (pkeyopts != NULL) {
 294         int num = sk_OPENSSL_STRING_num(pkeyopts);
 295         int i;
 296
 297         for (i = 0; i < num; ++i) {
 298             const char *opt = sk_OPENSSL_STRING_value(pkeyopts, i);
 299
 300             if (pkey_ctrl_string(ctx, opt) <= 0) {
 301                 BIO_printf(bio_err, "%s: Can't set parameter \"%s\":\n",
 302                            prog, opt);
 303                 ERR_print_errors(bio_err);
 304                 goto end;
 305             }
 306         }
 307     }
 308     if (pkeyopts_passin != NULL) {
 309         int num = sk_OPENSSL_STRING_num(pkeyopts_passin);
 310         int i;
 311
 312         for (i = 0; i < num; i++) {
 313             char *opt = sk_OPENSSL_STRING_value(pkeyopts_passin, i);
 314             char *passin = strchr(opt, ':');
 315             char *passwd;
 316
 317             if (passin == NULL) {
 318                 /* Get password interactively */
 319                 char passwd_buf[4096];
 320                 BIO_snprintf(passwd_buf, sizeof(passwd_buf), "Enter %s: ", opt);
 321                 EVP_read_pw_string(passwd_buf, sizeof(passwd_buf) - 1,
 322                                    passwd_buf, 0);
 323                 passwd = OPENSSL_strdup(passwd_buf);
 324                 if (passwd == NULL) {
 325                     BIO_puts(bio_err, "out of memory\n");
 326                     goto end;
 327                 }
 328             } else {
 329                 /* Get password as a passin argument: First split option name
 330                  * and passphrase argument into two strings */
 331                 *passin = 0;
 332                 passin++;
 333                 if (app_passwd(passin, NULL, &passwd, NULL) == 0) {
 334                     BIO_printf(bio_err, "failed to get '%s'\n", opt);
 335                     goto end;
 336                 }
 337             }
 338
 339             if (EVP_PKEY_CTX_ctrl_str(ctx, opt, passwd) <= 0) {
 340                 BIO_printf(bio_err, "%s: Can't set parameter \"%s\":\n",
 341                            prog, opt);
 342                 goto end;
 343             }
 344             OPENSSL_free(passwd);
 345         }
 346     }
 347
 348     if (sigfile != NULL && (pkey_op != EVP_PKEY_OP_VERIFY)) {
 349         BIO_printf(bio_err,
 350                    "%s: Signature file specified for non verify\n", prog);
 351         goto end;
 352     }
 353
 354     if (sigfile == NULL && (pkey_op == EVP_PKEY_OP_VERIFY)) {
 355         BIO_printf(bio_err,
 356                    "%s: No signature file specified for verify\n", prog);
 357         goto end;
 358     }
 359
 360     if (pkey_op != EVP_PKEY_OP_DERIVE) {
 361         in = bio_open_default(infile, 'r', FORMAT_BINARY);
 362         if (infile != NULL) {
 363             struct stat st;
 364
 365             if (stat(infile, &st) == 0 && st.st_size <= INT_MAX)
 366                 filesize = (int)st.st_size;
 367         }
 368         if (in == NULL)
 369             goto end;
 370     }
 371     out = bio_open_default(outfile, 'w', FORMAT_BINARY);
 372     if (out == NULL)
 373         goto end;
 374
 375     if (sigfile != NULL) {
 376         BIO *sigbio = BIO_new_file(sigfile, "rb");
 377
 378         if (sigbio == NULL) {
 379             BIO_printf(bio_err, "Can't open signature file %s\n", sigfile);
 380             goto end;
 381         }
 382         siglen = bio_to_mem(&sig, keysize * 10, sigbio);
 383         BIO_free(sigbio);
 384         if (siglen < 0) {
 385             BIO_printf(bio_err, "Error reading signature data\n");
 386             goto end;
 387         }
 388     }
 389
 390     /* Raw input data is handled elsewhere */
 391     if (in != NULL && !rawin) {
 392         /* Read the input data */
 393         buf_inlen = bio_to_mem(&buf_in, keysize * 10, in);
 394         if (buf_inlen < 0) {
 395             BIO_printf(bio_err, "Error reading input Data\n");
 396             goto end;
 397         }
 398         if (rev) {
 399             size_t i;
 400             unsigned char ctmp;
 401             size_t l = (size_t)buf_inlen;
 402             for (i = 0; i < l / 2; i++) {
 403                 ctmp = buf_in[i];
 404                 buf_in[i] = buf_in[l - 1 - i];
 405                 buf_in[l - 1 - i] = ctmp;
 406             }
 407         }
 408     }
 409
 410     /* Sanity check the input if the input is not raw */
 411     if (!rawin
 412             && buf_inlen > EVP_MAX_MD_SIZE
 413             && (pkey_op == EVP_PKEY_OP_SIGN
 414                 || pkey_op == EVP_PKEY_OP_VERIFY)) {
 415         BIO_printf(bio_err,
 416                    "Error: The input data looks too long to be a hash\n");
 417         goto end;
 418     }
 419
 420     if (pkey_op == EVP_PKEY_OP_VERIFY) {
 421         if (rawin) {
 422             rv = do_raw_keyop(pkey_op, ctx, md, pkey, in, filesize, sig, siglen,
 423                               NULL, 0);
 424         } else {
 425             rv = EVP_PKEY_verify(ctx, sig, (size_t)siglen,
 426                                  buf_in, (size_t)buf_inlen);
 427         }
 428         if (rv == 1) {
 429             BIO_puts(out, "Signature Verified Successfully\n");
 430             ret = 0;
 431         } else {
 432             BIO_puts(out, "Signature Verification Failure\n");
 433         }
 434         goto end;
 435     }
 436     if (kdflen != 0) {
 437         buf_outlen = kdflen;
 438         rv = 1;
 439     } else {
 440         if (rawin) {
 441             /* rawin allocates the buffer in do_raw_keyop() */
 442             rv = do_raw_keyop(pkey_op, ctx, md, pkey, in, filesize, NULL, 0,
 443                               &buf_out, (size_t *)&buf_outlen);
 444         } else {
 445             rv = do_keyop(ctx, pkey_op, NULL, (size_t *)&buf_outlen,
 446                           buf_in, (size_t)buf_inlen);
 447             if (rv > 0 && buf_outlen != 0) {
 448                 buf_out = app_malloc(buf_outlen, "buffer output");
 449                 rv = do_keyop(ctx, pkey_op,
 450                               buf_out, (size_t *)&buf_outlen,
 451                               buf_in, (size_t)buf_inlen);
 452             }
 453         }
 454     }
 455     if (rv <= 0) {
 456         if (pkey_op != EVP_PKEY_OP_DERIVE) {
 457             BIO_puts(bio_err, "Public Key operation error\n");
 458         } else {
 459             BIO_puts(bio_err, "Key derivation failed\n");
 460         }
 461         ERR_print_errors(bio_err);
 462         goto end;
 463     }
 464     ret = 0;
 465
 466     if (asn1parse) {
 467         if (!ASN1_parse_dump(out, buf_out, buf_outlen, 1, -1))
 468             ERR_print_errors(bio_err);
 469     } else if (hexdump) {
 470         BIO_dump(out, (char *)buf_out, buf_outlen);
 471     } else {
 472         BIO_write(out, buf_out, buf_outlen);
 473     }
 474
 475  end:
 476     EVP_PKEY_CTX_free(ctx);
 477     release_engine(e);
 478     BIO_free(in);
 479     BIO_free_all(out);
 480     OPENSSL_free(buf_in);
 481     OPENSSL_free(buf_out);
 482     OPENSSL_free(sig);
 483     sk_OPENSSL_STRING_free(pkeyopts);
 484     sk_OPENSSL_STRING_free(pkeyopts_passin);
 485     return ret;
 486 }
 487
 488 static EVP_PKEY_CTX *init_ctx(const char *kdfalg, int *pkeysize,
 489                               const char *keyfile, int keyform, int key_type,
 490                               char *passinarg, int pkey_op, ENGINE *e,
 491                               const int engine_impl, int rawin,
 492                               EVP_PKEY **ppkey)
 493 {
 494     EVP_PKEY *pkey = NULL;
 495     EVP_PKEY_CTX *ctx = NULL;
 496     ENGINE *impl = NULL;
 497     char *passin = NULL;
 498     int rv = -1;
 499     X509 *x;
 500     if (((pkey_op == EVP_PKEY_OP_SIGN) || (pkey_op == EVP_PKEY_OP_DECRYPT)
 501          || (pkey_op == EVP_PKEY_OP_DERIVE))
 502         && (key_type != KEY_PRIVKEY && kdfalg == NULL)) {
 503         BIO_printf(bio_err, "A private key is needed for this operation\n");
 504         goto end;
 505     }
 506     if (!app_passwd(passinarg, NULL, &passin, NULL)) {
 507         BIO_printf(bio_err, "Error getting password\n");
 508         goto end;
 509     }
 510     switch (key_type) {
 511     case KEY_PRIVKEY:
 512         pkey = load_key(keyfile, keyform, 0, passin, e, "Private Key");
 513         break;
 514
 515     case KEY_PUBKEY:
 516         pkey = load_pubkey(keyfile, keyform, 0, NULL, e, "Public Key");
 517         break;
 518
 519     case KEY_CERT:
 520         x = load_cert(keyfile, keyform, "Certificate");
 521         if (x) {
 522             pkey = X509_get_pubkey(x);
 523             X509_free(x);
 524         }
 525         break;
 526
 527     case KEY_NONE:
 528         break;
 529
 530     }
 531
 532 #ifndef OPENSSL_NO_ENGINE
 533     if (engine_impl)
 534         impl = e;
 535 #endif
 536
 537     if (kdfalg != NULL) {
 538         int kdfnid = OBJ_sn2nid(kdfalg);
 539
 540         if (kdfnid == NID_undef) {
 541             kdfnid = OBJ_ln2nid(kdfalg);
 542             if (kdfnid == NID_undef) {
 543                 BIO_printf(bio_err, "The given KDF \"%s\" is unknown.\n",
 544                            kdfalg);
 545                 goto end;
 546             }
 547         }
 548         ctx = EVP_PKEY_CTX_new_id(kdfnid, impl);
 549     } else {
 550         if (pkey == NULL)
 551             goto end;
 552
 553         *pkeysize = EVP_PKEY_size(pkey);
 554         ctx = EVP_PKEY_CTX_new(pkey, impl);
 555         if (ppkey != NULL)
 556             *ppkey = pkey;
 557         EVP_PKEY_free(pkey);
 558     }
 559
 560     if (ctx == NULL)
 561         goto end;
 562
 563     /*
 564      * If rawin then we don't need to actually initialise the EVP_PKEY_CTX
 565      * itself. That will get initialised during EVP_DigestSignInit or
 566      * EVP_DigestVerifyInit.
 567      */
 568     if (rawin) {
 569         rv = 1;
 570     } else {
 571         switch (pkey_op) {
 572         case EVP_PKEY_OP_SIGN:
 573             rv = EVP_PKEY_sign_init(ctx);
 574             break;
 575
 576         case EVP_PKEY_OP_VERIFY:
 577             rv = EVP_PKEY_verify_init(ctx);
 578             break;
 579
 580         case EVP_PKEY_OP_VERIFYRECOVER:
 581             rv = EVP_PKEY_verify_recover_init(ctx);
 582             break;
 583
 584         case EVP_PKEY_OP_ENCRYPT:
 585             rv = EVP_PKEY_encrypt_init(ctx);
 586             break;
 587
 588         case EVP_PKEY_OP_DECRYPT:
 589             rv = EVP_PKEY_decrypt_init(ctx);
 590             break;
 591
 592         case EVP_PKEY_OP_DERIVE:
 593             rv = EVP_PKEY_derive_init(ctx);
 594             break;
 595         }
 596     }
 597
 598     if (rv <= 0) {
 599         EVP_PKEY_CTX_free(ctx);
 600         ctx = NULL;
 601     }
 602
 603  end:
 604     OPENSSL_free(passin);
 605     return ctx;
 606
 607 }
 608
 609 static int setup_peer(EVP_PKEY_CTX *ctx, int peerform, const char *file,
 610                       ENGINE *e)
 611 {
 612     EVP_PKEY *peer = NULL;
 613     ENGINE *engine = NULL;
 614     int ret;
 615
 616     if (peerform == FORMAT_ENGINE)
 617         engine = e;
 618     peer = load_pubkey(file, peerform, 0, NULL, engine, "Peer Key");
 619     if (peer == NULL) {
 620         BIO_printf(bio_err, "Error reading peer key %s\n", file);
 621         ERR_print_errors(bio_err);
 622         return 0;
 623     }
 624
 625     ret = EVP_PKEY_derive_set_peer(ctx, peer);
 626
 627     EVP_PKEY_free(peer);
 628     if (ret <= 0)
 629         ERR_print_errors(bio_err);
 630     return ret;
 631 }
 632
 633 static int do_keyop(EVP_PKEY_CTX *ctx, int pkey_op,
 634                     unsigned char *out, size_t *poutlen,
 635                     const unsigned char *in, size_t inlen)
 636 {
 637     int rv = 0;
 638     switch (pkey_op) {
 639     case EVP_PKEY_OP_VERIFYRECOVER:
 640         rv = EVP_PKEY_verify_recover(ctx, out, poutlen, in, inlen);
 641         break;
 642
 643     case EVP_PKEY_OP_SIGN:
 644         rv = EVP_PKEY_sign(ctx, out, poutlen, in, inlen);
 645         break;
 646
 647     case EVP_PKEY_OP_ENCRYPT:
 648         rv = EVP_PKEY_encrypt(ctx, out, poutlen, in, inlen);
 649         break;
 650
 651     case EVP_PKEY_OP_DECRYPT:
 652         rv = EVP_PKEY_decrypt(ctx, out, poutlen, in, inlen);
 653         break;
 654
 655     case EVP_PKEY_OP_DERIVE:
 656         rv = EVP_PKEY_derive(ctx, out, poutlen);
 657         break;
 658
 659     }
 660     return rv;
 661 }
 662
 663 #define TBUF_MAXSIZE 2048
 664
 665 static int do_raw_keyop(int pkey_op, EVP_PKEY_CTX *ctx,
 666                         const EVP_MD *md, EVP_PKEY *pkey, BIO *in,
 667                         int filesize, unsigned char *sig, int siglen,
 668                         unsigned char **out, size_t *poutlen)
 669 {
 670     int rv = 0;
 671     EVP_MD_CTX *mctx = NULL;
 672     unsigned char tbuf[TBUF_MAXSIZE];
 673     unsigned char *mbuf = NULL;
 674     int buf_len = 0;
 675
 676     if ((mctx = EVP_MD_CTX_new()) == NULL) {
 677         BIO_printf(bio_err, "Error: out of memory\n");
 678         return rv;
 679     }
 680     EVP_MD_CTX_set_pkey_ctx(mctx, ctx);
 681
 682     /* Some algorithms only support oneshot digests */
 683     if (EVP_PKEY_id(pkey) == EVP_PKEY_ED25519
 684             || EVP_PKEY_id(pkey) == EVP_PKEY_ED448) {
 685         if (filesize < 0) {
 686             BIO_printf(bio_err,
 687                        "Error: unable to determine file size for oneshot operation\n");
 688             goto end;
 689         }
 690         mbuf = app_malloc(filesize, "oneshot sign/verify buffer");
 691         switch(pkey_op) {
 692         case EVP_PKEY_OP_VERIFY:
 693             if (EVP_DigestVerifyInit(mctx, NULL, md, NULL, pkey) != 1)
 694                 goto end;
 695             buf_len = BIO_read(in, mbuf, filesize);
 696             if (buf_len != filesize) {
 697                 BIO_printf(bio_err, "Error reading raw input data\n");
 698                 goto end;
 699             }
 700             rv = EVP_DigestVerify(mctx, sig, (size_t)siglen, mbuf, buf_len);
 701             break;
 702         case EVP_PKEY_OP_SIGN:
 703             if (EVP_DigestSignInit(mctx, NULL, md, NULL, pkey) != 1)
 704                 goto end;
 705             buf_len = BIO_read(in, mbuf, filesize);
 706             if (buf_len != filesize) {
 707                 BIO_printf(bio_err, "Error reading raw input data\n");
 708                 goto end;
 709             }
 710             rv = EVP_DigestSign(mctx, NULL, poutlen, mbuf, buf_len);
 711             if (rv == 1 && out != NULL) {
 712                 *out = app_malloc(*poutlen, "buffer output");
 713                 rv = EVP_DigestSign(mctx, *out, poutlen, mbuf, buf_len);
 714             }
 715             break;
 716         }
 717         goto end;
 718     }
 719
 720     switch(pkey_op) {
 721     case EVP_PKEY_OP_VERIFY:
 722         if (EVP_DigestVerifyInit(mctx, NULL, md, NULL, pkey) != 1)
 723             goto end;
 724         for (;;) {
 725             buf_len = BIO_read(in, tbuf, TBUF_MAXSIZE);
 726             if (buf_len == 0)
 727                 break;
 728             if (buf_len < 0) {
 729                 BIO_printf(bio_err, "Error reading raw input data\n");
 730                 goto end;
 731             }
 732             rv = EVP_DigestVerifyUpdate(mctx, tbuf, (size_t)buf_len);
 733             if (rv != 1) {
 734                 BIO_printf(bio_err, "Error verifying raw input data\n");
 735                 goto end;
 736             }
 737         }
 738         rv = EVP_DigestVerifyFinal(mctx, sig, (size_t)siglen);
 739         break;
 740     case EVP_PKEY_OP_SIGN:
 741         if (EVP_DigestSignInit(mctx, NULL, md, NULL, pkey) != 1)
 742             goto end;
 743         for (;;) {
 744             buf_len = BIO_read(in, tbuf, TBUF_MAXSIZE);
 745             if (buf_len == 0)
 746                 break;
 747             if (buf_len < 0) {
 748                 BIO_printf(bio_err, "Error reading raw input data\n");
 749                 goto end;
 750             }
 751             rv = EVP_DigestSignUpdate(mctx, tbuf, (size_t)buf_len);
 752             if (rv != 1) {
 753                 BIO_printf(bio_err, "Error signing raw input data\n");
 754                 goto end;
 755             }
 756         }
 757         rv = EVP_DigestSignFinal(mctx, NULL, poutlen);
 758         if (rv == 1 && out != NULL) {
 759             *out = app_malloc(*poutlen, "buffer output");
 760             rv = EVP_DigestSignFinal(mctx, *out, poutlen);
 761         }
 762         break;
 763     }
 764
 765  end:
 766     OPENSSL_free(mbuf);
 767     EVP_MD_CTX_free(mctx);
 768     return rv;
 769 }