apps/pkeyutl.c

   1 /*
   2  * Copyright 2006-2018 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 #ifndef OPENSSL_NO_POSIX_IO
  17 # include <sys/stat.h>
  18 #endif
  19
  20 #define KEY_NONE        0
  21 #define KEY_PRIVKEY     1
  22 #define KEY_PUBKEY      2
  23 #define KEY_CERT        3
  24
  25 static EVP_PKEY_CTX *init_ctx(const char *kdfalg, int *pkeysize,
  26                               const char *keyfile, int keyform, int key_type,
  27                               char *passinarg, int pkey_op, ENGINE *e,
  28                               const int impl, int rawin, EVP_PKEY **ppkey);
  29
  30 static int setup_peer(EVP_PKEY_CTX *ctx, int peerform, const char *file,
  31                       ENGINE *e);
  32
  33 static int do_keyop(EVP_PKEY_CTX *ctx, int pkey_op,
  34                     unsigned char *out, size_t *poutlen,
  35                     const unsigned char *in, size_t inlen);
  36
  37 static int do_raw_keyop(int pkey_op, EVP_PKEY_CTX *ctx,
  38                         const EVP_MD *md, EVP_PKEY *pkey, BIO *in,
  39                         int filesize, unsigned char *sig, int siglen,
  40                         unsigned char **out, size_t *poutlen);
  41
  42 typedef enum OPTION_choice {
  43     OPT_ERR = -1, OPT_EOF = 0, OPT_HELP,
  44     OPT_ENGINE, OPT_ENGINE_IMPL, OPT_IN, OPT_OUT,
  45     OPT_PUBIN, OPT_CERTIN, OPT_ASN1PARSE, OPT_HEXDUMP, OPT_SIGN,
  46     OPT_VERIFY, OPT_VERIFYRECOVER, OPT_REV, OPT_ENCRYPT, OPT_DECRYPT,
  47     OPT_DERIVE, OPT_SIGFILE, OPT_INKEY, OPT_PEERKEY, OPT_PASSIN,
  48     OPT_PEERFORM, OPT_KEYFORM, OPT_PKEYOPT, OPT_PKEYOPT_PASSIN, OPT_KDF,
  49     OPT_KDFLEN, OPT_R_ENUM,
  50     OPT_RAWIN, OPT_DIGEST
  51 } OPTION_CHOICE;
  52
  53 const OPTIONS pkeyutl_options[] = {
  54     {"help", OPT_HELP, '-', "Display this summary"},
  55     {"in", OPT_IN, '<', "Input file - default stdin"},
  56     {"rawin", OPT_RAWIN, '-', "Indicate the input data is in raw form"},
  57     {"digest", OPT_DIGEST, 's',
  58      "Specify the digest algorithm when signing the raw input data"},
  59     {"out", OPT_OUT, '>', "Output file - default stdout"},
  60     {"pubin", OPT_PUBIN, '-', "Input is a public key"},
  61     {"certin", OPT_CERTIN, '-', "Input is a cert with a public key"},
  62     {"asn1parse", OPT_ASN1PARSE, '-', "asn1parse the output data"},
  63     {"hexdump", OPT_HEXDUMP, '-', "Hex dump output"},
  64     {"sign", OPT_SIGN, '-', "Sign input data with private key"},
  65     {"verify", OPT_VERIFY, '-', "Verify with public key"},
  66     {"verifyrecover", OPT_VERIFYRECOVER, '-',
  67      "Verify with public key, recover original data"},
  68     {"rev", OPT_REV, '-', "Reverse the order of the input buffer"},
  69     {"encrypt", OPT_ENCRYPT, '-', "Encrypt input data with public key"},
  70     {"decrypt", OPT_DECRYPT, '-', "Decrypt input data with private key"},
  71     {"derive", OPT_DERIVE, '-', "Derive shared secret"},
  72     {"kdf", OPT_KDF, 's', "Use KDF algorithm"},
  73     {"kdflen", OPT_KDFLEN, 'p', "KDF algorithm output length"},
  74     {"sigfile", OPT_SIGFILE, '<', "Signature file (verify operation only)"},
  75     {"inkey", OPT_INKEY, 's', "Input private key file"},
  76     {"peerkey", OPT_PEERKEY, 's', "Peer key file used in key derivation"},
  77     {"passin", OPT_PASSIN, 's', "Input file pass phrase source"},
  78     {"peerform", OPT_PEERFORM, 'E', "Peer key format - default PEM"},
  79     {"keyform", OPT_KEYFORM, 'E', "Private key format - default PEM"},
  80     {"pkeyopt", OPT_PKEYOPT, 's', "Public key options as opt:value"},
  81     {"pkeyopt_passin", OPT_PKEYOPT_PASSIN, 's',
  82      "Public key option that is read as a passphrase argument opt:passphrase"},
  83     OPT_R_OPTIONS,
  84 #ifndef OPENSSL_NO_ENGINE
  85     {"engine", OPT_ENGINE, 's', "Use engine, possibly a hardware device"},
  86     {"engine_impl", OPT_ENGINE_IMPL, '-',
  87      "Also use engine given by -engine for crypto operations"},
  88 #endif
  89     {NULL}
  90 };
  91
  92 int pkeyutl_main(int argc, char **argv)
  93 {
  94     BIO *in = NULL, *out = NULL;
  95     ENGINE *e = NULL;
  96     EVP_PKEY_CTX *ctx = NULL;
  97     EVP_PKEY *pkey = NULL;
  98     char *infile = NULL, *outfile = NULL, *sigfile = NULL, *passinarg = NULL;
  99     char hexdump = 0, asn1parse = 0, rev = 0, *prog;
 100     unsigned char *buf_in = NULL, *buf_out = NULL, *sig = NULL;
 101     OPTION_CHOICE o;
 102     int buf_inlen = 0, siglen = -1, keyform = FORMAT_PEM, peerform = FORMAT_PEM;
 103     int keysize = -1, pkey_op = EVP_PKEY_OP_SIGN, key_type = KEY_PRIVKEY;
 104     int engine_impl = 0;
 105     int ret = 1, rv = -1;
 106     size_t buf_outlen;
 107     const char *inkey = NULL;
 108     const char *peerkey = NULL;
 109     const char *kdfalg = NULL;
 110     int kdflen = 0;
 111     STACK_OF(OPENSSL_STRING) *pkeyopts = NULL;
 112     STACK_OF(OPENSSL_STRING) *pkeyopts_passin = NULL;
 113     int rawin = 0;
 114     const EVP_MD *md = NULL;
 115     int filesize = -1;
 116
 117     prog = opt_init(argc, argv, pkeyutl_options);
 118     while ((o = opt_next()) != OPT_EOF) {
 119         switch (o) {
 120         case OPT_EOF:
 121         case OPT_ERR:
 122  opthelp:
 123             BIO_printf(bio_err, "%s: Use -help for summary.\n", prog);
 124             goto end;
 125         case OPT_HELP:
 126             opt_help(pkeyutl_options);
 127             ret = 0;
 128             goto end;
 129         case OPT_IN:
 130             infile = opt_arg();
 131             break;
 132         case OPT_OUT:
 133             outfile = opt_arg();
 134             break;
 135         case OPT_SIGFILE:
 136             sigfile = opt_arg();
 137             break;
 138         case OPT_ENGINE_IMPL:
 139             engine_impl = 1;
 140             break;
 141         case OPT_INKEY:
 142             inkey = opt_arg();
 143             break;
 144         case OPT_PEERKEY:
 145             peerkey = opt_arg();
 146             break;
 147         case OPT_PASSIN:
 148             passinarg = opt_arg();
 149             break;
 150         case OPT_PEERFORM:
 151             if (!opt_format(opt_arg(), OPT_FMT_PDE, &peerform))
 152                 goto opthelp;
 153             break;
 154         case OPT_KEYFORM:
 155             if (!opt_format(opt_arg(), OPT_FMT_PDE, &keyform))
 156                 goto opthelp;
 157             break;
 158         case OPT_R_CASES:
 159             if (!opt_rand(o))
 160                 goto end;
 161             break;
 162         case OPT_ENGINE:
 163             e = setup_engine(opt_arg(), 0);
 164             break;
 165         case OPT_PUBIN:
 166             key_type = KEY_PUBKEY;
 167             break;
 168         case OPT_CERTIN:
 169             key_type = KEY_CERT;
 170             break;
 171         case OPT_ASN1PARSE:
 172             asn1parse = 1;
 173             break;
 174         case OPT_HEXDUMP:
 175             hexdump = 1;
 176             break;
 177         case OPT_SIGN:
 178             pkey_op = EVP_PKEY_OP_SIGN;
 179             break;
 180         case OPT_VERIFY:
 181             pkey_op = EVP_PKEY_OP_VERIFY;
 182             break;
 183         case OPT_VERIFYRECOVER:
 184             pkey_op = EVP_PKEY_OP_VERIFYRECOVER;
 185             break;
 186         case OPT_ENCRYPT:
 187             pkey_op = EVP_PKEY_OP_ENCRYPT;
 188             break;
 189         case OPT_DECRYPT:
 190             pkey_op = EVP_PKEY_OP_DECRYPT;
 191             break;
 192         case OPT_DERIVE:
 193             pkey_op = EVP_PKEY_OP_DERIVE;
 194             break;
 195         case OPT_KDF:
 196             pkey_op = EVP_PKEY_OP_DERIVE;
 197             key_type = KEY_NONE;
 198             kdfalg = opt_arg();
 199             break;
 200         case OPT_KDFLEN:
 201             kdflen = atoi(opt_arg());
 202             break;
 203         case OPT_REV:
 204             rev = 1;
 205             break;
 206         case OPT_PKEYOPT:
 207             if ((pkeyopts == NULL &&
 208                  (pkeyopts = sk_OPENSSL_STRING_new_null()) == NULL) ||
 209                 sk_OPENSSL_STRING_push(pkeyopts, opt_arg()) == 0) {
 210                 BIO_puts(bio_err, "out of memory\n");
 211                 goto end;
 212             }
 213             break;
 214         case OPT_PKEYOPT_PASSIN:
 215             if ((pkeyopts_passin == NULL &&
 216                  (pkeyopts_passin = sk_OPENSSL_STRING_new_null()) == NULL) ||
 217                 sk_OPENSSL_STRING_push(pkeyopts_passin, opt_arg()) == 0) {
 218                 BIO_puts(bio_err, "out of memory\n");
 219                 goto end;
 220             }
 221             break;
 222         case OPT_RAWIN:
 223             rawin = 1;
 224             break;
 225         case OPT_DIGEST:
 226             if (!opt_md(opt_arg(), &md))
 227                 goto end;
 228             break;
 229         }
 230     }
 231     argc = opt_num_rest();
 232     if (argc != 0)
 233         goto opthelp;
 234
 235     if (rawin && pkey_op != EVP_PKEY_OP_SIGN && pkey_op != EVP_PKEY_OP_VERIFY) {
 236         BIO_printf(bio_err,
 237                    "%s: -rawin can only be used with -sign or -verify\n",
 238                    prog);
 239         goto opthelp;
 240     }
 241
 242     if (md != NULL && !rawin) {
 243         BIO_printf(bio_err,
 244                    "%s: -digest can only be used with -rawin\n",
 245                    prog);
 246         goto opthelp;
 247     }
 248
 249     if (rawin && rev) {
 250         BIO_printf(bio_err, "%s: -rev cannot be used with raw input\n",
 251                    prog);
 252         goto opthelp;
 253     }
 254
 255     if (kdfalg != NULL) {
 256         if (kdflen == 0) {
 257             BIO_printf(bio_err,
 258                        "%s: no KDF length given (-kdflen parameter).\n", prog);
 259             goto opthelp;
 260         }
 261     } else if (inkey == NULL) {
 262         BIO_printf(bio_err,
 263                    "%s: no private key given (-inkey parameter).\n", prog);
 264         goto opthelp;
 265     } else if (peerkey != NULL && pkey_op != EVP_PKEY_OP_DERIVE) {
 266         BIO_printf(bio_err,
 267                    "%s: no peer key given (-peerkey parameter).\n", prog);
 268         goto opthelp;
 269     }
 270     ctx = init_ctx(kdfalg, &keysize, inkey, keyform, key_type,
 271                    passinarg, pkey_op, e, engine_impl, rawin, &pkey);
 272     if (ctx == NULL) {
 273         BIO_printf(bio_err, "%s: Error initializing context\n", prog);
 274         ERR_print_errors(bio_err);
 275         goto end;
 276     }
 277     if (peerkey != NULL && !setup_peer(ctx, peerform, peerkey, e)) {
 278         BIO_printf(bio_err, "%s: Error setting up peer key\n", prog);
 279         ERR_print_errors(bio_err);
 280         goto end;
 281     }
 282     if (pkeyopts != NULL) {
 283         int num = sk_OPENSSL_STRING_num(pkeyopts);
 284         int i;
 285
 286         for (i = 0; i < num; ++i) {
 287             const char *opt = sk_OPENSSL_STRING_value(pkeyopts, i);
 288
 289             if (pkey_ctrl_string(ctx, opt) <= 0) {
 290                 BIO_printf(bio_err, "%s: Can't set parameter \"%s\":\n",
 291                            prog, opt);
 292                 ERR_print_errors(bio_err);
 293                 goto end;
 294             }
 295         }
 296     }
 297     if (pkeyopts_passin != NULL) {
 298         int num = sk_OPENSSL_STRING_num(pkeyopts_passin);
 299         int i;
 300
 301         for (i = 0; i < num; i++) {
 302             char *opt = sk_OPENSSL_STRING_value(pkeyopts_passin, i);
 303             char *passin = strchr(opt, ':');
 304             char *passwd;
 305
 306             if (passin == NULL) {
 307                 /* Get password interactively */
 308                 char passwd_buf[4096];
 309                 BIO_snprintf(passwd_buf, sizeof(passwd_buf), "Enter %s: ", opt);
 310                 EVP_read_pw_string(passwd_buf, sizeof(passwd_buf) - 1,
 311                                    passwd_buf, 0);
 312                 passwd = OPENSSL_strdup(passwd_buf);
 313                 if (passwd == NULL) {
 314                     BIO_puts(bio_err, "out of memory\n");
 315                     goto end;
 316                 }
 317             } else {
 318                 /* Get password as a passin argument: First split option name
 319                  * and passphrase argument into two strings */
 320                 *passin = 0;
 321                 passin++;
 322                 if (app_passwd(passin, NULL, &passwd, NULL) == 0) {
 323                     BIO_printf(bio_err, "failed to get '%s'\n", opt);
 324                     goto end;
 325                 }
 326             }
 327
 328             if (EVP_PKEY_CTX_ctrl_str(ctx, opt, passwd) <= 0) {
 329                 BIO_printf(bio_err, "%s: Can't set parameter \"%s\":\n",
 330                            prog, opt);
 331                 goto end;
 332             }
 333             OPENSSL_free(passwd);
 334         }
 335     }
 336
 337     if (sigfile != NULL && (pkey_op != EVP_PKEY_OP_VERIFY)) {
 338         BIO_printf(bio_err,
 339                    "%s: Signature file specified for non verify\n", prog);
 340         goto end;
 341     }
 342
 343     if (sigfile == NULL && (pkey_op == EVP_PKEY_OP_VERIFY)) {
 344         BIO_printf(bio_err,
 345                    "%s: No signature file specified for verify\n", prog);
 346         goto end;
 347     }
 348
 349     if (pkey_op != EVP_PKEY_OP_DERIVE) {
 350         in = bio_open_default(infile, 'r', FORMAT_BINARY);
 351 #ifndef OPENSSL_NO_POSIX_IO
 352         if (infile != NULL)
 353         {
 354             struct stat st;
 355
 356             if (stat(infile, &st) == 0 && st.st_size <= INT_MAX)
 357                 filesize = (int)st.st_size;
 358         }
 359 #endif
 360         if (in == NULL)
 361             goto end;
 362     }
 363     out = bio_open_default(outfile, 'w', FORMAT_BINARY);
 364     if (out == NULL)
 365         goto end;
 366
 367     if (sigfile != NULL) {
 368         BIO *sigbio = BIO_new_file(sigfile, "rb");
 369
 370         if (sigbio == NULL) {
 371             BIO_printf(bio_err, "Can't open signature file %s\n", sigfile);
 372             goto end;
 373         }
 374         siglen = bio_to_mem(&sig, keysize * 10, sigbio);
 375         BIO_free(sigbio);
 376         if (siglen < 0) {
 377             BIO_printf(bio_err, "Error reading signature data\n");
 378             goto end;
 379         }
 380     }
 381
 382     /* Raw input data is handled elsewhere */
 383     if (in != NULL && !rawin) {
 384         /* Read the input data */
 385         buf_inlen = bio_to_mem(&buf_in, keysize * 10, in);
 386         if (buf_inlen < 0) {
 387             BIO_printf(bio_err, "Error reading input Data\n");
 388             goto end;
 389         }
 390         if (rev) {
 391             size_t i;
 392             unsigned char ctmp;
 393             size_t l = (size_t)buf_inlen;
 394             for (i = 0; i < l / 2; i++) {
 395                 ctmp = buf_in[i];
 396                 buf_in[i] = buf_in[l - 1 - i];
 397                 buf_in[l - 1 - i] = ctmp;
 398             }
 399         }
 400     }
 401
 402     /* Sanity check the input if the input is not raw */
 403     if (!rawin
 404             && buf_inlen > EVP_MAX_MD_SIZE
 405             && (pkey_op == EVP_PKEY_OP_SIGN
 406                 || pkey_op == EVP_PKEY_OP_VERIFY
 407                 || pkey_op == EVP_PKEY_OP_VERIFYRECOVER)) {
 408         BIO_printf(bio_err,
 409                    "Error: The input data looks too long to be a hash\n");
 410         goto end;
 411     }
 412
 413     if (pkey_op == EVP_PKEY_OP_VERIFY) {
 414         if (rawin) {
 415             rv = do_raw_keyop(pkey_op, ctx, md, pkey, in, filesize, sig, siglen,
 416                               NULL, 0);
 417         } else {
 418             rv = EVP_PKEY_verify(ctx, sig, (size_t)siglen,
 419                                  buf_in, (size_t)buf_inlen);
 420         }
 421         if (rv == 1) {
 422             BIO_puts(out, "Signature Verified Successfully\n");
 423             ret = 0;
 424         } else {
 425             BIO_puts(out, "Signature Verification Failure\n");
 426         }
 427         goto end;
 428     }
 429     if (kdflen != 0) {
 430         buf_outlen = kdflen;
 431         rv = 1;
 432     } else {
 433         if (rawin) {
 434             /* rawin allocates the buffer in do_raw_keyop() */
 435             rv = do_raw_keyop(pkey_op, ctx, md, pkey, in, filesize, NULL, 0,
 436                               &buf_out, (size_t *)&buf_outlen);
 437         } else {
 438             rv = do_keyop(ctx, pkey_op, NULL, (size_t *)&buf_outlen,
 439                           buf_in, (size_t)buf_inlen);
 440             if (rv > 0 && buf_outlen != 0) {
 441                 buf_out = app_malloc(buf_outlen, "buffer output");
 442                 rv = do_keyop(ctx, pkey_op,
 443                               buf_out, (size_t *)&buf_outlen,
 444                               buf_in, (size_t)buf_inlen);
 445             }
 446         }
 447     }
 448     if (rv <= 0) {
 449         if (pkey_op != EVP_PKEY_OP_DERIVE) {
 450             BIO_puts(bio_err, "Public Key operation error\n");
 451         } else {
 452             BIO_puts(bio_err, "Key derivation failed\n");
 453         }
 454         ERR_print_errors(bio_err);
 455         goto end;
 456     }
 457     ret = 0;
 458
 459     if (asn1parse) {
 460         if (!ASN1_parse_dump(out, buf_out, buf_outlen, 1, -1))
 461             ERR_print_errors(bio_err);
 462     } else if (hexdump) {
 463         BIO_dump(out, (char *)buf_out, buf_outlen);
 464     } else {
 465         BIO_write(out, buf_out, buf_outlen);
 466     }
 467
 468  end:
 469     EVP_PKEY_CTX_free(ctx);
 470     release_engine(e);
 471     BIO_free(in);
 472     BIO_free_all(out);
 473     OPENSSL_free(buf_in);
 474     OPENSSL_free(buf_out);
 475     OPENSSL_free(sig);
 476     sk_OPENSSL_STRING_free(pkeyopts);
 477     sk_OPENSSL_STRING_free(pkeyopts_passin);
 478     return ret;
 479 }
 480
 481 static EVP_PKEY_CTX *init_ctx(const char *kdfalg, int *pkeysize,
 482                               const char *keyfile, int keyform, int key_type,
 483                               char *passinarg, int pkey_op, ENGINE *e,
 484                               const int engine_impl, int rawin,
 485                               EVP_PKEY **ppkey)
 486 {
 487     EVP_PKEY *pkey = NULL;
 488     EVP_PKEY_CTX *ctx = NULL;
 489     ENGINE *impl = NULL;
 490     char *passin = NULL;
 491     int rv = -1;
 492     X509 *x;
 493     if (((pkey_op == EVP_PKEY_OP_SIGN) || (pkey_op == EVP_PKEY_OP_DECRYPT)
 494          || (pkey_op == EVP_PKEY_OP_DERIVE))
 495         && (key_type != KEY_PRIVKEY && kdfalg == NULL)) {
 496         BIO_printf(bio_err, "A private key is needed for this operation\n");
 497         goto end;
 498     }
 499     if (!app_passwd(passinarg, NULL, &passin, NULL)) {
 500         BIO_printf(bio_err, "Error getting password\n");
 501         goto end;
 502     }
 503     switch (key_type) {
 504     case KEY_PRIVKEY:
 505         pkey = load_key(keyfile, keyform, 0, passin, e, "Private Key");
 506         break;
 507
 508     case KEY_PUBKEY:
 509         pkey = load_pubkey(keyfile, keyform, 0, NULL, e, "Public Key");
 510         break;
 511
 512     case KEY_CERT:
 513         x = load_cert(keyfile, keyform, "Certificate");
 514         if (x) {
 515             pkey = X509_get_pubkey(x);
 516             X509_free(x);
 517         }
 518         break;
 519
 520     case KEY_NONE:
 521         break;
 522
 523     }
 524
 525 #ifndef OPENSSL_NO_ENGINE
 526     if (engine_impl)
 527         impl = e;
 528 #endif
 529
 530     if (kdfalg != NULL) {
 531         int kdfnid = OBJ_sn2nid(kdfalg);
 532
 533         if (kdfnid == NID_undef) {
 534             kdfnid = OBJ_ln2nid(kdfalg);
 535             if (kdfnid == NID_undef) {
 536                 BIO_printf(bio_err, "The given KDF \"%s\" is unknown.\n",
 537                            kdfalg);
 538                 goto end;
 539             }
 540         }
 541         ctx = EVP_PKEY_CTX_new_id(kdfnid, impl);
 542     } else {
 543         if (pkey == NULL)
 544             goto end;
 545
 546 #ifndef OPENSSL_NO_EC
 547         /* SM2 needs a special treatment */
 548         if (EVP_PKEY_id(pkey) == EVP_PKEY_EC) {
 549             EC_KEY *eckey = NULL;
 550             const EC_GROUP *group = NULL;
 551             int nid;
 552
 553             if ((eckey = EVP_PKEY_get0_EC_KEY(pkey)) == NULL
 554                     || (group = EC_KEY_get0_group(eckey)) == NULL
 555                     || (nid = EC_GROUP_get_curve_name(group)) == 0)
 556                 goto end;
 557             if (nid == NID_sm2)
 558                 EVP_PKEY_set_alias_type(pkey, EVP_PKEY_SM2);
 559         }
 560 #endif
 561         *pkeysize = EVP_PKEY_size(pkey);
 562         ctx = EVP_PKEY_CTX_new(pkey, impl);
 563         if (ppkey != NULL)
 564             *ppkey = pkey;
 565         EVP_PKEY_free(pkey);
 566     }
 567
 568     if (ctx == NULL)
 569         goto end;
 570
 571     /*
 572      * If rawin then we don't need to actually initialise the EVP_PKEY_CTX
 573      * itself. That will get initialised during EVP_DigestSignInit or
 574      * EVP_DigestVerifyInit.
 575      */
 576     if (rawin) {
 577         rv = 1;
 578     } else {
 579         switch (pkey_op) {
 580         case EVP_PKEY_OP_SIGN:
 581             rv = EVP_PKEY_sign_init(ctx);
 582             break;
 583
 584         case EVP_PKEY_OP_VERIFY:
 585             rv = EVP_PKEY_verify_init(ctx);
 586             break;
 587
 588         case EVP_PKEY_OP_VERIFYRECOVER:
 589             rv = EVP_PKEY_verify_recover_init(ctx);
 590             break;
 591
 592         case EVP_PKEY_OP_ENCRYPT:
 593             rv = EVP_PKEY_encrypt_init(ctx);
 594             break;
 595
 596         case EVP_PKEY_OP_DECRYPT:
 597             rv = EVP_PKEY_decrypt_init(ctx);
 598             break;
 599
 600         case EVP_PKEY_OP_DERIVE:
 601             rv = EVP_PKEY_derive_init(ctx);
 602             break;
 603         }
 604     }
 605
 606     if (rv <= 0) {
 607         EVP_PKEY_CTX_free(ctx);
 608         ctx = NULL;
 609     }
 610
 611  end:
 612     OPENSSL_free(passin);
 613     return ctx;
 614
 615 }
 616
 617 static int setup_peer(EVP_PKEY_CTX *ctx, int peerform, const char *file,
 618                       ENGINE *e)
 619 {
 620     EVP_PKEY *peer = NULL;
 621     ENGINE *engine = NULL;
 622     int ret;
 623
 624     if (peerform == FORMAT_ENGINE)
 625         engine = e;
 626     peer = load_pubkey(file, peerform, 0, NULL, engine, "Peer Key");
 627     if (peer == NULL) {
 628         BIO_printf(bio_err, "Error reading peer key %s\n", file);
 629         ERR_print_errors(bio_err);
 630         return 0;
 631     }
 632
 633     ret = EVP_PKEY_derive_set_peer(ctx, peer);
 634
 635     EVP_PKEY_free(peer);
 636     if (ret <= 0)
 637         ERR_print_errors(bio_err);
 638     return ret;
 639 }
 640
 641 static int do_keyop(EVP_PKEY_CTX *ctx, int pkey_op,
 642                     unsigned char *out, size_t *poutlen,
 643                     const unsigned char *in, size_t inlen)
 644 {
 645     int rv = 0;
 646     switch (pkey_op) {
 647     case EVP_PKEY_OP_VERIFYRECOVER:
 648         rv = EVP_PKEY_verify_recover(ctx, out, poutlen, in, inlen);
 649         break;
 650
 651     case EVP_PKEY_OP_SIGN:
 652         rv = EVP_PKEY_sign(ctx, out, poutlen, in, inlen);
 653         break;
 654
 655     case EVP_PKEY_OP_ENCRYPT:
 656         rv = EVP_PKEY_encrypt(ctx, out, poutlen, in, inlen);
 657         break;
 658
 659     case EVP_PKEY_OP_DECRYPT:
 660         rv = EVP_PKEY_decrypt(ctx, out, poutlen, in, inlen);
 661         break;
 662
 663     case EVP_PKEY_OP_DERIVE:
 664         rv = EVP_PKEY_derive(ctx, out, poutlen);
 665         break;
 666
 667     }
 668     return rv;
 669 }
 670
 671 #define TBUF_MAXSIZE 2048
 672
 673 static int do_raw_keyop(int pkey_op, EVP_PKEY_CTX *ctx,
 674                         const EVP_MD *md, EVP_PKEY *pkey, BIO *in,
 675                         int filesize, unsigned char *sig, int siglen,
 676                         unsigned char **out, size_t *poutlen)
 677 {
 678     int rv = 0;
 679     EVP_MD_CTX *mctx = NULL;
 680     unsigned char tbuf[TBUF_MAXSIZE];
 681     unsigned char *mbuf = NULL;
 682     int buf_len = 0;
 683
 684     if ((mctx = EVP_MD_CTX_new()) == NULL) {
 685         BIO_printf(bio_err, "Error: out of memory\n");
 686         return rv;
 687     }
 688     EVP_MD_CTX_set_pkey_ctx(mctx, ctx);
 689
 690     /* Some algorithms only support oneshot digests */
 691     if (EVP_PKEY_id(pkey) == EVP_PKEY_ED25519
 692             || EVP_PKEY_id(pkey) == EVP_PKEY_ED448) {
 693         if (filesize < 0) {
 694             BIO_printf(bio_err,
 695                        "Error: unable to determine file size for oneshot operation\n");
 696             return rv;
 697         }
 698         mbuf = app_malloc(filesize, "oneshot sign/verify buffer");
 699         switch(pkey_op) {
 700         case EVP_PKEY_OP_VERIFY:
 701             if (EVP_DigestVerifyInit(mctx, NULL, md, NULL, pkey) != 1)
 702                 goto end;
 703             buf_len = BIO_read(in, mbuf, filesize);
 704             if (buf_len != filesize) {
 705                 BIO_printf(bio_err, "Error reading raw input data\n");
 706                 goto end;
 707             }
 708             rv = EVP_DigestVerify(mctx, sig, (size_t)siglen, mbuf, buf_len);
 709             break;
 710         case EVP_PKEY_OP_SIGN:
 711             if (EVP_DigestSignInit(mctx, NULL, md, NULL, pkey) != 1)
 712                 goto end;
 713             buf_len = BIO_read(in, mbuf, filesize);
 714             if (buf_len != filesize) {
 715                 BIO_printf(bio_err, "Error reading raw input data\n");
 716                 goto end;
 717             }
 718             rv = EVP_DigestSign(mctx, NULL, poutlen, mbuf, buf_len);
 719             if (rv == 1 && out != NULL) {
 720                 *out = app_malloc(*poutlen, "buffer output");
 721                 rv = EVP_DigestSign(mctx, *out, poutlen, mbuf, buf_len);
 722             }
 723             break;
 724         }
 725         OPENSSL_free(mbuf);
 726         goto end;
 727     }
 728
 729     switch(pkey_op) {
 730     case EVP_PKEY_OP_VERIFY:
 731         if (EVP_DigestVerifyInit(mctx, NULL, md, NULL, pkey) != 1)
 732             goto end;
 733         for (;;) {
 734             buf_len = BIO_read(in, tbuf, TBUF_MAXSIZE);
 735             if (buf_len == 0)
 736                 break;
 737             if (buf_len < 0) {
 738                 BIO_printf(bio_err, "Error reading raw input data\n");
 739                 goto end;
 740             }
 741             rv = EVP_DigestVerifyUpdate(mctx, tbuf, (size_t)buf_len);
 742             if (rv != 1) {
 743                 BIO_printf(bio_err, "Error verifying raw input data\n");
 744                 goto end;
 745             }
 746         }
 747         rv = EVP_DigestVerifyFinal(mctx, sig, (size_t)siglen);
 748         break;
 749     case EVP_PKEY_OP_SIGN:
 750         if (EVP_DigestSignInit(mctx, NULL, md, NULL, pkey) != 1)
 751             goto end;
 752         for (;;) {
 753             buf_len = BIO_read(in, tbuf, TBUF_MAXSIZE);
 754             if (buf_len == 0)
 755                 break;
 756             if (buf_len < 0) {
 757                 BIO_printf(bio_err, "Error reading raw input data\n");
 758                 goto end;
 759             }
 760             rv = EVP_DigestSignUpdate(mctx, tbuf, (size_t)buf_len);
 761             if (rv != 1) {
 762                 BIO_printf(bio_err, "Error signing raw input data\n");
 763                 goto end;
 764             }
 765         }
 766         rv = EVP_DigestSignFinal(mctx, NULL, poutlen);
 767         if (rv == 1 && out != NULL) {
 768             *out = app_malloc(*poutlen, "buffer output");
 769             rv = EVP_DigestSignFinal(mctx, *out, poutlen);
 770         }
 771         break;
 772     }
 773
 774  end:
 775     EVP_MD_CTX_free(mctx);
 776     return rv;
 777 }