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                               OPENSSL_CTX *libctx, const char *propq);
  28
  29 static int setup_peer(EVP_PKEY_CTX *ctx, int peerform, const char *file,
  30                       ENGINE *e);
  31
  32 static int do_keyop(EVP_PKEY_CTX *ctx, int pkey_op,
  33                     unsigned char *out, size_t *poutlen,
  34                     const unsigned char *in, size_t inlen);
  35
  36 static int do_raw_keyop(int pkey_op, EVP_PKEY_CTX *ctx,
  37                         const EVP_MD *md, EVP_PKEY *pkey, BIO *in,
  38                         int filesize, unsigned char *sig, int siglen,
  39                         unsigned char **out, size_t *poutlen);
  40
  41 typedef enum OPTION_choice {
  42     OPT_ERR = -1, OPT_EOF = 0, OPT_HELP,
  43     OPT_ENGINE, OPT_ENGINE_IMPL, OPT_IN, OPT_OUT,
  44     OPT_PUBIN, OPT_CERTIN, OPT_ASN1PARSE, OPT_HEXDUMP, OPT_SIGN,
  45     OPT_VERIFY, OPT_VERIFYRECOVER, OPT_REV, OPT_ENCRYPT, OPT_DECRYPT,
  46     OPT_DERIVE, OPT_SIGFILE, OPT_INKEY, OPT_PEERKEY, OPT_PASSIN,
  47     OPT_PEERFORM, OPT_KEYFORM, OPT_PKEYOPT, OPT_PKEYOPT_PASSIN, OPT_KDF,
  48     OPT_KDFLEN, OPT_R_ENUM, OPT_PROV_ENUM,
  49     OPT_CONFIG,
  50     OPT_RAWIN, OPT_DIGEST
  51 } OPTION_CHOICE;
  52
  53 const OPTIONS pkeyutl_options[] = {
  54     OPT_SECTION("General"),
  55     {"help", OPT_HELP, '-', "Display this summary"},
  56 #ifndef OPENSSL_NO_ENGINE
  57     {"engine", OPT_ENGINE, 's', "Use engine, possibly a hardware device"},
  58     {"engine_impl", OPT_ENGINE_IMPL, '-',
  59      "Also use engine given by -engine for crypto operations"},
  60 #endif
  61     {"sign", OPT_SIGN, '-', "Sign input data with private key"},
  62     {"verify", OPT_VERIFY, '-', "Verify with public key"},
  63     {"encrypt", OPT_ENCRYPT, '-', "Encrypt input data with public key"},
  64     {"decrypt", OPT_DECRYPT, '-', "Decrypt input data with private key"},
  65     {"derive", OPT_DERIVE, '-', "Derive shared secret"},
  66     OPT_CONFIG_OPTION,
  67
  68     OPT_SECTION("Input"),
  69     {"in", OPT_IN, '<', "Input file - default stdin"},
  70     {"rawin", OPT_RAWIN, '-', "Indicate the input data is in raw form"},
  71     {"pubin", OPT_PUBIN, '-', "Input is a public key"},
  72     {"inkey", OPT_INKEY, 's', "Input private key file"},
  73     {"passin", OPT_PASSIN, 's', "Input file pass phrase source"},
  74     {"peerkey", OPT_PEERKEY, 's', "Peer key file used in key derivation"},
  75     {"peerform", OPT_PEERFORM, 'E', "Peer key format (DER/PEM/P12/ENGINE)"},
  76     {"certin", OPT_CERTIN, '-', "Input is a cert with a public key"},
  77     {"rev", OPT_REV, '-', "Reverse the order of the input buffer"},
  78     {"sigfile", OPT_SIGFILE, '<', "Signature file (verify operation only)"},
  79     {"keyform", OPT_KEYFORM, 'E', "Private key format (ENGINE, other values ignored)"},
  80
  81     OPT_SECTION("Output"),
  82     {"out", OPT_OUT, '>', "Output file - default stdout"},
  83     {"asn1parse", OPT_ASN1PARSE, '-', "asn1parse the output data"},
  84     {"hexdump", OPT_HEXDUMP, '-', "Hex dump output"},
  85     {"verifyrecover", OPT_VERIFYRECOVER, '-',
  86      "Verify with public key, recover original data"},
  87
  88     OPT_SECTION("Signing/Derivation"),
  89     {"digest", OPT_DIGEST, 's',
  90      "Specify the digest algorithm when signing the raw input data"},
  91     {"pkeyopt", OPT_PKEYOPT, 's', "Public key options as opt:value"},
  92     {"pkeyopt_passin", OPT_PKEYOPT_PASSIN, 's',
  93      "Public key option that is read as a passphrase argument opt:passphrase"},
  94     {"kdf", OPT_KDF, 's', "Use KDF algorithm"},
  95     {"kdflen", OPT_KDFLEN, 'p', "KDF algorithm output length"},
  96
  97     OPT_R_OPTIONS,
  98     OPT_PROV_OPTIONS,
  99     {NULL}
 100 };
 101
 102 int pkeyutl_main(int argc, char **argv)
 103 {
 104     CONF *conf = NULL;
 105     BIO *in = NULL, *out = NULL;
 106     ENGINE *e = NULL;
 107     EVP_PKEY_CTX *ctx = NULL;
 108     EVP_PKEY *pkey = NULL;
 109     char *infile = NULL, *outfile = NULL, *sigfile = NULL, *passinarg = NULL;
 110     char hexdump = 0, asn1parse = 0, rev = 0, *prog;
 111     unsigned char *buf_in = NULL, *buf_out = NULL, *sig = NULL;
 112     OPTION_CHOICE o;
 113     int buf_inlen = 0, siglen = -1, keyform = FORMAT_PEM, peerform = FORMAT_PEM;
 114     int keysize = -1, pkey_op = EVP_PKEY_OP_SIGN, key_type = KEY_PRIVKEY;
 115     int engine_impl = 0;
 116     int ret = 1, rv = -1;
 117     size_t buf_outlen;
 118     const char *inkey = NULL;
 119     const char *peerkey = NULL;
 120     const char *kdfalg = NULL;
 121     int kdflen = 0;
 122     STACK_OF(OPENSSL_STRING) *pkeyopts = NULL;
 123     STACK_OF(OPENSSL_STRING) *pkeyopts_passin = NULL;
 124     int rawin = 0;
 125     const EVP_MD *md = NULL;
 126     int filesize = -1;
 127     OPENSSL_CTX *libctx = app_get0_libctx();
 128     const char *propq = NULL;
 129
 130     prog = opt_init(argc, argv, pkeyutl_options);
 131     while ((o = opt_next()) != OPT_EOF) {
 132         switch (o) {
 133         case OPT_EOF:
 134         case OPT_ERR:
 135  opthelp:
 136             BIO_printf(bio_err, "%s: Use -help for summary.\n", prog);
 137             goto end;
 138         case OPT_HELP:
 139             opt_help(pkeyutl_options);
 140             ret = 0;
 141             goto end;
 142         case OPT_IN:
 143             infile = opt_arg();
 144             break;
 145         case OPT_OUT:
 146             outfile = opt_arg();
 147             break;
 148         case OPT_SIGFILE:
 149             sigfile = opt_arg();
 150             break;
 151         case OPT_ENGINE_IMPL:
 152             engine_impl = 1;
 153             break;
 154         case OPT_INKEY:
 155             inkey = opt_arg();
 156             break;
 157         case OPT_PEERKEY:
 158             peerkey = opt_arg();
 159             break;
 160         case OPT_PASSIN:
 161             passinarg = opt_arg();
 162             break;
 163         case OPT_PEERFORM:
 164             if (!opt_format(opt_arg(), OPT_FMT_ANY, &peerform))
 165                 goto opthelp;
 166             break;
 167         case OPT_KEYFORM:
 168             if (!opt_format(opt_arg(), OPT_FMT_ANY, &keyform))
 169                 goto opthelp;
 170             break;
 171         case OPT_R_CASES:
 172             if (!opt_rand(o))
 173                 goto end;
 174             break;
 175         case OPT_CONFIG:
 176             conf = app_load_config_modules(opt_arg());
 177             if (conf == NULL)
 178                 goto end;
 179             break;
 180         case OPT_PROV_CASES:
 181             if (!opt_provider(o))
 182                 goto end;
 183             break;
 184         case OPT_ENGINE:
 185             e = setup_engine(opt_arg(), 0);
 186             break;
 187         case OPT_PUBIN:
 188             key_type = KEY_PUBKEY;
 189             break;
 190         case OPT_CERTIN:
 191             key_type = KEY_CERT;
 192             break;
 193         case OPT_ASN1PARSE:
 194             asn1parse = 1;
 195             break;
 196         case OPT_HEXDUMP:
 197             hexdump = 1;
 198             break;
 199         case OPT_SIGN:
 200             pkey_op = EVP_PKEY_OP_SIGN;
 201             break;
 202         case OPT_VERIFY:
 203             pkey_op = EVP_PKEY_OP_VERIFY;
 204             break;
 205         case OPT_VERIFYRECOVER:
 206             pkey_op = EVP_PKEY_OP_VERIFYRECOVER;
 207             break;
 208         case OPT_ENCRYPT:
 209             pkey_op = EVP_PKEY_OP_ENCRYPT;
 210             break;
 211         case OPT_DECRYPT:
 212             pkey_op = EVP_PKEY_OP_DECRYPT;
 213             break;
 214         case OPT_DERIVE:
 215             pkey_op = EVP_PKEY_OP_DERIVE;
 216             break;
 217         case OPT_KDF:
 218             pkey_op = EVP_PKEY_OP_DERIVE;
 219             key_type = KEY_NONE;
 220             kdfalg = opt_arg();
 221             break;
 222         case OPT_KDFLEN:
 223             kdflen = atoi(opt_arg());
 224             break;
 225         case OPT_REV:
 226             rev = 1;
 227             break;
 228         case OPT_PKEYOPT:
 229             if ((pkeyopts == NULL &&
 230                  (pkeyopts = sk_OPENSSL_STRING_new_null()) == NULL) ||
 231                 sk_OPENSSL_STRING_push(pkeyopts, opt_arg()) == 0) {
 232                 BIO_puts(bio_err, "out of memory\n");
 233                 goto end;
 234             }
 235             break;
 236         case OPT_PKEYOPT_PASSIN:
 237             if ((pkeyopts_passin == NULL &&
 238                  (pkeyopts_passin = sk_OPENSSL_STRING_new_null()) == NULL) ||
 239                 sk_OPENSSL_STRING_push(pkeyopts_passin, opt_arg()) == 0) {
 240                 BIO_puts(bio_err, "out of memory\n");
 241                 goto end;
 242             }
 243             break;
 244         case OPT_RAWIN:
 245             rawin = 1;
 246             break;
 247         case OPT_DIGEST:
 248             if (!opt_md(opt_arg(), &md))
 249                 goto end;
 250             break;
 251         }
 252     }
 253     argc = opt_num_rest();
 254     if (argc != 0)
 255         goto opthelp;
 256
 257     if (rawin && pkey_op != EVP_PKEY_OP_SIGN && pkey_op != EVP_PKEY_OP_VERIFY) {
 258         BIO_printf(bio_err,
 259                    "%s: -rawin can only be used with -sign or -verify\n",
 260                    prog);
 261         goto opthelp;
 262     }
 263
 264     if (md != NULL && !rawin) {
 265         BIO_printf(bio_err,
 266                    "%s: -digest can only be used with -rawin\n",
 267                    prog);
 268         goto opthelp;
 269     }
 270
 271     if (rawin && rev) {
 272         BIO_printf(bio_err, "%s: -rev cannot be used with raw input\n",
 273                    prog);
 274         goto opthelp;
 275     }
 276
 277     if (kdfalg != NULL) {
 278         if (kdflen == 0) {
 279             BIO_printf(bio_err,
 280                        "%s: no KDF length given (-kdflen parameter).\n", prog);
 281             goto opthelp;
 282         }
 283     } else if (inkey == NULL) {
 284         BIO_printf(bio_err,
 285                    "%s: no private key given (-inkey parameter).\n", prog);
 286         goto opthelp;
 287     } else if (peerkey != NULL && pkey_op != EVP_PKEY_OP_DERIVE) {
 288         BIO_printf(bio_err,
 289                    "%s: no peer key given (-peerkey parameter).\n", prog);
 290         goto opthelp;
 291     }
 292     ctx = init_ctx(kdfalg, &keysize, inkey, keyform, key_type,
 293                    passinarg, pkey_op, e, engine_impl, rawin, &pkey,
 294                    libctx, propq);
 295     if (ctx == NULL) {
 296         BIO_printf(bio_err, "%s: Error initializing context\n", prog);
 297         ERR_print_errors(bio_err);
 298         goto end;
 299     }
 300     if (peerkey != NULL && !setup_peer(ctx, peerform, peerkey, e)) {
 301         BIO_printf(bio_err, "%s: Error setting up peer key\n", prog);
 302         ERR_print_errors(bio_err);
 303         goto end;
 304     }
 305     if (pkeyopts != NULL) {
 306         int num = sk_OPENSSL_STRING_num(pkeyopts);
 307         int i;
 308
 309         for (i = 0; i < num; ++i) {
 310             const char *opt = sk_OPENSSL_STRING_value(pkeyopts, i);
 311
 312             if (pkey_ctrl_string(ctx, opt) <= 0) {
 313                 BIO_printf(bio_err, "%s: Can't set parameter \"%s\":\n",
 314                            prog, opt);
 315                 ERR_print_errors(bio_err);
 316                 goto end;
 317             }
 318         }
 319     }
 320     if (pkeyopts_passin != NULL) {
 321         int num = sk_OPENSSL_STRING_num(pkeyopts_passin);
 322         int i;
 323
 324         for (i = 0; i < num; i++) {
 325             char *opt = sk_OPENSSL_STRING_value(pkeyopts_passin, i);
 326             char *passin = strchr(opt, ':');
 327             char *passwd;
 328
 329             if (passin == NULL) {
 330                 /* Get password interactively */
 331                 char passwd_buf[4096];
 332                 int r;
 333
 334                 BIO_snprintf(passwd_buf, sizeof(passwd_buf), "Enter %s: ", opt);
 335                 r = EVP_read_pw_string(passwd_buf, sizeof(passwd_buf) - 1,
 336                                        passwd_buf, 0);
 337                 if (r < 0) {
 338                     if (r == -2)
 339                         BIO_puts(bio_err, "user abort\n");
 340                     else
 341                         BIO_puts(bio_err, "entry failed\n");
 342                     goto end;
 343                 }
 344                 passwd = OPENSSL_strdup(passwd_buf);
 345                 if (passwd == NULL) {
 346                     BIO_puts(bio_err, "out of memory\n");
 347                     goto end;
 348                 }
 349             } else {
 350                 /* Get password as a passin argument: First split option name
 351                  * and passphrase argument into two strings */
 352                 *passin = 0;
 353                 passin++;
 354                 if (app_passwd(passin, NULL, &passwd, NULL) == 0) {
 355                     BIO_printf(bio_err, "failed to get '%s'\n", opt);
 356                     goto end;
 357                 }
 358             }
 359
 360             if (EVP_PKEY_CTX_ctrl_str(ctx, opt, passwd) <= 0) {
 361                 BIO_printf(bio_err, "%s: Can't set parameter \"%s\":\n",
 362                            prog, opt);
 363                 goto end;
 364             }
 365             OPENSSL_free(passwd);
 366         }
 367     }
 368
 369     if (sigfile != NULL && (pkey_op != EVP_PKEY_OP_VERIFY)) {
 370         BIO_printf(bio_err,
 371                    "%s: Signature file specified for non verify\n", prog);
 372         goto end;
 373     }
 374
 375     if (sigfile == NULL && (pkey_op == EVP_PKEY_OP_VERIFY)) {
 376         BIO_printf(bio_err,
 377                    "%s: No signature file specified for verify\n", prog);
 378         goto end;
 379     }
 380
 381     if (pkey_op != EVP_PKEY_OP_DERIVE) {
 382         in = bio_open_default(infile, 'r', FORMAT_BINARY);
 383         if (infile != NULL) {
 384             struct stat st;
 385
 386             if (stat(infile, &st) == 0 && st.st_size <= INT_MAX)
 387                 filesize = (int)st.st_size;
 388         }
 389         if (in == NULL)
 390             goto end;
 391     }
 392     out = bio_open_default(outfile, 'w', FORMAT_BINARY);
 393     if (out == NULL)
 394         goto end;
 395
 396     if (sigfile != NULL) {
 397         BIO *sigbio = BIO_new_file(sigfile, "rb");
 398
 399         if (sigbio == NULL) {
 400             BIO_printf(bio_err, "Can't open signature file %s\n", sigfile);
 401             goto end;
 402         }
 403         siglen = bio_to_mem(&sig, keysize * 10, sigbio);
 404         BIO_free(sigbio);
 405         if (siglen < 0) {
 406             BIO_printf(bio_err, "Error reading signature data\n");
 407             goto end;
 408         }
 409     }
 410
 411     /* Raw input data is handled elsewhere */
 412     if (in != NULL && !rawin) {
 413         /* Read the input data */
 414         buf_inlen = bio_to_mem(&buf_in, keysize * 10, in);
 415         if (buf_inlen < 0) {
 416             BIO_printf(bio_err, "Error reading input Data\n");
 417             goto end;
 418         }
 419         if (rev) {
 420             size_t i;
 421             unsigned char ctmp;
 422             size_t l = (size_t)buf_inlen;
 423             for (i = 0; i < l / 2; i++) {
 424                 ctmp = buf_in[i];
 425                 buf_in[i] = buf_in[l - 1 - i];
 426                 buf_in[l - 1 - i] = ctmp;
 427             }
 428         }
 429     }
 430
 431     /* Sanity check the input if the input is not raw */
 432     if (!rawin
 433             && buf_inlen > EVP_MAX_MD_SIZE
 434             && (pkey_op == EVP_PKEY_OP_SIGN
 435                 || pkey_op == EVP_PKEY_OP_VERIFY)) {
 436         BIO_printf(bio_err,
 437                    "Error: The input data looks too long to be a hash\n");
 438         goto end;
 439     }
 440
 441     if (pkey_op == EVP_PKEY_OP_VERIFY) {
 442         if (rawin) {
 443             rv = do_raw_keyop(pkey_op, ctx, md, pkey, in, filesize, sig, siglen,
 444                               NULL, 0);
 445         } else {
 446             rv = EVP_PKEY_verify(ctx, sig, (size_t)siglen,
 447                                  buf_in, (size_t)buf_inlen);
 448         }
 449         if (rv == 1) {
 450             BIO_puts(out, "Signature Verified Successfully\n");
 451             ret = 0;
 452         } else {
 453             BIO_puts(out, "Signature Verification Failure\n");
 454         }
 455         goto end;
 456     }
 457     if (kdflen != 0) {
 458         buf_outlen = kdflen;
 459         rv = 1;
 460     } else {
 461         if (rawin) {
 462             /* rawin allocates the buffer in do_raw_keyop() */
 463             rv = do_raw_keyop(pkey_op, ctx, md, pkey, in, filesize, NULL, 0,
 464                               &buf_out, (size_t *)&buf_outlen);
 465         } else {
 466             rv = do_keyop(ctx, pkey_op, NULL, (size_t *)&buf_outlen,
 467                           buf_in, (size_t)buf_inlen);
 468             if (rv > 0 && buf_outlen != 0) {
 469                 buf_out = app_malloc(buf_outlen, "buffer output");
 470                 rv = do_keyop(ctx, pkey_op,
 471                               buf_out, (size_t *)&buf_outlen,
 472                               buf_in, (size_t)buf_inlen);
 473             }
 474         }
 475     }
 476     if (rv <= 0) {
 477         if (pkey_op != EVP_PKEY_OP_DERIVE) {
 478             BIO_puts(bio_err, "Public Key operation error\n");
 479         } else {
 480             BIO_puts(bio_err, "Key derivation failed\n");
 481         }
 482         ERR_print_errors(bio_err);
 483         goto end;
 484     }
 485     ret = 0;
 486
 487     if (asn1parse) {
 488         if (!ASN1_parse_dump(out, buf_out, buf_outlen, 1, -1))
 489             ERR_print_errors(bio_err);
 490     } else if (hexdump) {
 491         BIO_dump(out, (char *)buf_out, buf_outlen);
 492     } else {
 493         BIO_write(out, buf_out, buf_outlen);
 494     }
 495
 496  end:
 497     EVP_PKEY_CTX_free(ctx);
 498     release_engine(e);
 499     BIO_free(in);
 500     BIO_free_all(out);
 501     OPENSSL_free(buf_in);
 502     OPENSSL_free(buf_out);
 503     OPENSSL_free(sig);
 504     sk_OPENSSL_STRING_free(pkeyopts);
 505     sk_OPENSSL_STRING_free(pkeyopts_passin);
 506     NCONF_free(conf);
 507     return ret;
 508 }
 509
 510 static EVP_PKEY_CTX *init_ctx(const char *kdfalg, int *pkeysize,
 511                               const char *keyfile, int keyform, int key_type,
 512                               char *passinarg, int pkey_op, ENGINE *e,
 513                               const int engine_impl, int rawin,
 514                               EVP_PKEY **ppkey,
 515                               OPENSSL_CTX *libctx, const char *propq)
 516 {
 517     EVP_PKEY *pkey = NULL;
 518     EVP_PKEY_CTX *ctx = NULL;
 519     ENGINE *impl = NULL;
 520     char *passin = NULL;
 521     int rv = -1;
 522     X509 *x;
 523     if (((pkey_op == EVP_PKEY_OP_SIGN) || (pkey_op == EVP_PKEY_OP_DECRYPT)
 524          || (pkey_op == EVP_PKEY_OP_DERIVE))
 525         && (key_type != KEY_PRIVKEY && kdfalg == NULL)) {
 526         BIO_printf(bio_err, "A private key is needed for this operation\n");
 527         goto end;
 528     }
 529     if (!app_passwd(passinarg, NULL, &passin, NULL)) {
 530         BIO_printf(bio_err, "Error getting password\n");
 531         goto end;
 532     }
 533     switch (key_type) {
 534     case KEY_PRIVKEY:
 535         pkey = load_key(keyfile, keyform, 0, passin, e, "private key");
 536         break;
 537
 538     case KEY_PUBKEY:
 539         pkey = load_pubkey(keyfile, keyform, 0, NULL, e, "public key");
 540         break;
 541
 542     case KEY_CERT:
 543         x = load_cert(keyfile, FORMAT_UNDEF, "Certificate");
 544         if (x) {
 545             pkey = X509_get_pubkey(x);
 546             X509_free(x);
 547         }
 548         break;
 549
 550     case KEY_NONE:
 551         break;
 552
 553     }
 554
 555 #ifndef OPENSSL_NO_ENGINE
 556     if (engine_impl)
 557         impl = e;
 558 #endif
 559
 560     if (kdfalg != NULL) {
 561         int kdfnid = OBJ_sn2nid(kdfalg);
 562
 563         if (kdfnid == NID_undef) {
 564             kdfnid = OBJ_ln2nid(kdfalg);
 565             if (kdfnid == NID_undef) {
 566                 BIO_printf(bio_err, "The given KDF \"%s\" is unknown.\n",
 567                            kdfalg);
 568                 goto end;
 569             }
 570         }
 571         if (impl != NULL)
 572             ctx = EVP_PKEY_CTX_new_id(kdfnid, impl);
 573         else
 574             ctx = EVP_PKEY_CTX_new_from_name(libctx, kdfalg, propq);
 575     } else {
 576         if (pkey == NULL)
 577             goto end;
 578
 579         *pkeysize = EVP_PKEY_size(pkey);
 580         if (impl != NULL)
 581             ctx = EVP_PKEY_CTX_new(pkey, impl);
 582         else
 583             ctx = EVP_PKEY_CTX_new_from_pkey(libctx, pkey, propq);
 584         if (ppkey != NULL)
 585             *ppkey = pkey;
 586         EVP_PKEY_free(pkey);
 587     }
 588
 589     if (ctx == NULL)
 590         goto end;
 591
 592     /*
 593      * If rawin then we don't need to actually initialise the EVP_PKEY_CTX
 594      * itself. That will get initialised during EVP_DigestSignInit or
 595      * EVP_DigestVerifyInit.
 596      */
 597     if (rawin) {
 598         rv = 1;
 599     } else {
 600         switch (pkey_op) {
 601         case EVP_PKEY_OP_SIGN:
 602             rv = EVP_PKEY_sign_init(ctx);
 603             break;
 604
 605         case EVP_PKEY_OP_VERIFY:
 606             rv = EVP_PKEY_verify_init(ctx);
 607             break;
 608
 609         case EVP_PKEY_OP_VERIFYRECOVER:
 610             rv = EVP_PKEY_verify_recover_init(ctx);
 611             break;
 612
 613         case EVP_PKEY_OP_ENCRYPT:
 614             rv = EVP_PKEY_encrypt_init(ctx);
 615             break;
 616
 617         case EVP_PKEY_OP_DECRYPT:
 618             rv = EVP_PKEY_decrypt_init(ctx);
 619             break;
 620
 621         case EVP_PKEY_OP_DERIVE:
 622             rv = EVP_PKEY_derive_init(ctx);
 623             break;
 624         }
 625     }
 626
 627     if (rv <= 0) {
 628         EVP_PKEY_CTX_free(ctx);
 629         ctx = NULL;
 630     }
 631
 632  end:
 633     OPENSSL_free(passin);
 634     return ctx;
 635
 636 }
 637
 638 static int setup_peer(EVP_PKEY_CTX *ctx, int peerform, const char *file,
 639                       ENGINE *e)
 640 {
 641     EVP_PKEY *peer = NULL;
 642     ENGINE *engine = NULL;
 643     int ret;
 644
 645     if (peerform == FORMAT_ENGINE)
 646         engine = e;
 647     peer = load_pubkey(file, peerform, 0, NULL, engine, "peer key");
 648     if (peer == NULL) {
 649         BIO_printf(bio_err, "Error reading peer key %s\n", file);
 650         ERR_print_errors(bio_err);
 651         return 0;
 652     }
 653
 654     ret = EVP_PKEY_derive_set_peer(ctx, peer);
 655
 656     EVP_PKEY_free(peer);
 657     if (ret <= 0)
 658         ERR_print_errors(bio_err);
 659     return ret;
 660 }
 661
 662 static int do_keyop(EVP_PKEY_CTX *ctx, int pkey_op,
 663                     unsigned char *out, size_t *poutlen,
 664                     const unsigned char *in, size_t inlen)
 665 {
 666     int rv = 0;
 667     switch (pkey_op) {
 668     case EVP_PKEY_OP_VERIFYRECOVER:
 669         rv = EVP_PKEY_verify_recover(ctx, out, poutlen, in, inlen);
 670         break;
 671
 672     case EVP_PKEY_OP_SIGN:
 673         rv = EVP_PKEY_sign(ctx, out, poutlen, in, inlen);
 674         break;
 675
 676     case EVP_PKEY_OP_ENCRYPT:
 677         rv = EVP_PKEY_encrypt(ctx, out, poutlen, in, inlen);
 678         break;
 679
 680     case EVP_PKEY_OP_DECRYPT:
 681         rv = EVP_PKEY_decrypt(ctx, out, poutlen, in, inlen);
 682         break;
 683
 684     case EVP_PKEY_OP_DERIVE:
 685         rv = EVP_PKEY_derive(ctx, out, poutlen);
 686         break;
 687
 688     }
 689     return rv;
 690 }
 691
 692 #define TBUF_MAXSIZE 2048
 693
 694 static int do_raw_keyop(int pkey_op, EVP_PKEY_CTX *ctx,
 695                         const EVP_MD *md, EVP_PKEY *pkey, BIO *in,
 696                         int filesize, unsigned char *sig, int siglen,
 697                         unsigned char **out, size_t *poutlen)
 698 {
 699     int rv = 0;
 700     EVP_MD_CTX *mctx = NULL;
 701     unsigned char tbuf[TBUF_MAXSIZE];
 702     unsigned char *mbuf = NULL;
 703     int buf_len = 0;
 704
 705     if ((mctx = EVP_MD_CTX_new()) == NULL) {
 706         BIO_printf(bio_err, "Error: out of memory\n");
 707         return rv;
 708     }
 709     EVP_MD_CTX_set_pkey_ctx(mctx, ctx);
 710
 711     /* Some algorithms only support oneshot digests */
 712     if (EVP_PKEY_id(pkey) == EVP_PKEY_ED25519
 713             || EVP_PKEY_id(pkey) == EVP_PKEY_ED448) {
 714         if (filesize < 0) {
 715             BIO_printf(bio_err,
 716                        "Error: unable to determine file size for oneshot operation\n");
 717             goto end;
 718         }
 719         mbuf = app_malloc(filesize, "oneshot sign/verify buffer");
 720         switch(pkey_op) {
 721         case EVP_PKEY_OP_VERIFY:
 722             if (EVP_DigestVerifyInit(mctx, NULL, md, NULL, pkey) != 1)
 723                 goto end;
 724             buf_len = BIO_read(in, mbuf, filesize);
 725             if (buf_len != filesize) {
 726                 BIO_printf(bio_err, "Error reading raw input data\n");
 727                 goto end;
 728             }
 729             rv = EVP_DigestVerify(mctx, sig, (size_t)siglen, mbuf, buf_len);
 730             break;
 731         case EVP_PKEY_OP_SIGN:
 732             if (EVP_DigestSignInit(mctx, NULL, md, NULL, pkey) != 1)
 733                 goto end;
 734             buf_len = BIO_read(in, mbuf, filesize);
 735             if (buf_len != filesize) {
 736                 BIO_printf(bio_err, "Error reading raw input data\n");
 737                 goto end;
 738             }
 739             rv = EVP_DigestSign(mctx, NULL, poutlen, mbuf, buf_len);
 740             if (rv == 1 && out != NULL) {
 741                 *out = app_malloc(*poutlen, "buffer output");
 742                 rv = EVP_DigestSign(mctx, *out, poutlen, mbuf, buf_len);
 743             }
 744             break;
 745         }
 746         goto end;
 747     }
 748
 749     switch(pkey_op) {
 750     case EVP_PKEY_OP_VERIFY:
 751         if (EVP_DigestVerifyInit(mctx, NULL, md, NULL, pkey) != 1)
 752             goto end;
 753         for (;;) {
 754             buf_len = BIO_read(in, tbuf, TBUF_MAXSIZE);
 755             if (buf_len == 0)
 756                 break;
 757             if (buf_len < 0) {
 758                 BIO_printf(bio_err, "Error reading raw input data\n");
 759                 goto end;
 760             }
 761             rv = EVP_DigestVerifyUpdate(mctx, tbuf, (size_t)buf_len);
 762             if (rv != 1) {
 763                 BIO_printf(bio_err, "Error verifying raw input data\n");
 764                 goto end;
 765             }
 766         }
 767         rv = EVP_DigestVerifyFinal(mctx, sig, (size_t)siglen);
 768         break;
 769     case EVP_PKEY_OP_SIGN:
 770         if (EVP_DigestSignInit(mctx, NULL, md, NULL, pkey) != 1)
 771             goto end;
 772         for (;;) {
 773             buf_len = BIO_read(in, tbuf, TBUF_MAXSIZE);
 774             if (buf_len == 0)
 775                 break;
 776             if (buf_len < 0) {
 777                 BIO_printf(bio_err, "Error reading raw input data\n");
 778                 goto end;
 779             }
 780             rv = EVP_DigestSignUpdate(mctx, tbuf, (size_t)buf_len);
 781             if (rv != 1) {
 782                 BIO_printf(bio_err, "Error signing raw input data\n");
 783                 goto end;
 784             }
 785         }
 786         rv = EVP_DigestSignFinal(mctx, NULL, poutlen);
 787         if (rv == 1 && out != NULL) {
 788             *out = app_malloc(*poutlen, "buffer output");
 789             rv = EVP_DigestSignFinal(mctx, *out, poutlen);
 790         }
 791         break;
 792     }
 793
 794  end:
 795     OPENSSL_free(mbuf);
 796     EVP_MD_CTX_free(mctx);
 797     return rv;
 798 }