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                               OSSL_LIB_CTX *libctx);
  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     OSSL_LIB_CTX *libctx = app_get0_libctx();
 128
 129     prog = opt_init(argc, argv, pkeyutl_options);
 130     while ((o = opt_next()) != OPT_EOF) {
 131         switch (o) {
 132         case OPT_EOF:
 133         case OPT_ERR:
 134  opthelp:
 135             BIO_printf(bio_err, "%s: Use -help for summary.\n", prog);
 136             goto end;
 137         case OPT_HELP:
 138             opt_help(pkeyutl_options);
 139             ret = 0;
 140             goto end;
 141         case OPT_IN:
 142             infile = opt_arg();
 143             break;
 144         case OPT_OUT:
 145             outfile = opt_arg();
 146             break;
 147         case OPT_SIGFILE:
 148             sigfile = opt_arg();
 149             break;
 150         case OPT_ENGINE_IMPL:
 151             engine_impl = 1;
 152             break;
 153         case OPT_INKEY:
 154             inkey = opt_arg();
 155             break;
 156         case OPT_PEERKEY:
 157             peerkey = opt_arg();
 158             break;
 159         case OPT_PASSIN:
 160             passinarg = opt_arg();
 161             break;
 162         case OPT_PEERFORM:
 163             if (!opt_format(opt_arg(), OPT_FMT_ANY, &peerform))
 164                 goto opthelp;
 165             break;
 166         case OPT_KEYFORM:
 167             if (!opt_format(opt_arg(), OPT_FMT_ANY, &keyform))
 168                 goto opthelp;
 169             break;
 170         case OPT_R_CASES:
 171             if (!opt_rand(o))
 172                 goto end;
 173             break;
 174         case OPT_CONFIG:
 175             conf = app_load_config_modules(opt_arg());
 176             if (conf == NULL)
 177                 goto end;
 178             break;
 179         case OPT_PROV_CASES:
 180             if (!opt_provider(o))
 181                 goto end;
 182             break;
 183         case OPT_ENGINE:
 184             e = setup_engine(opt_arg(), 0);
 185             break;
 186         case OPT_PUBIN:
 187             key_type = KEY_PUBKEY;
 188             break;
 189         case OPT_CERTIN:
 190             key_type = KEY_CERT;
 191             break;
 192         case OPT_ASN1PARSE:
 193             asn1parse = 1;
 194             break;
 195         case OPT_HEXDUMP:
 196             hexdump = 1;
 197             break;
 198         case OPT_SIGN:
 199             pkey_op = EVP_PKEY_OP_SIGN;
 200             break;
 201         case OPT_VERIFY:
 202             pkey_op = EVP_PKEY_OP_VERIFY;
 203             break;
 204         case OPT_VERIFYRECOVER:
 205             pkey_op = EVP_PKEY_OP_VERIFYRECOVER;
 206             break;
 207         case OPT_ENCRYPT:
 208             pkey_op = EVP_PKEY_OP_ENCRYPT;
 209             break;
 210         case OPT_DECRYPT:
 211             pkey_op = EVP_PKEY_OP_DECRYPT;
 212             break;
 213         case OPT_DERIVE:
 214             pkey_op = EVP_PKEY_OP_DERIVE;
 215             break;
 216         case OPT_KDF:
 217             pkey_op = EVP_PKEY_OP_DERIVE;
 218             key_type = KEY_NONE;
 219             kdfalg = opt_arg();
 220             break;
 221         case OPT_KDFLEN:
 222             kdflen = atoi(opt_arg());
 223             break;
 224         case OPT_REV:
 225             rev = 1;
 226             break;
 227         case OPT_PKEYOPT:
 228             if ((pkeyopts == NULL &&
 229                  (pkeyopts = sk_OPENSSL_STRING_new_null()) == NULL) ||
 230                 sk_OPENSSL_STRING_push(pkeyopts, opt_arg()) == 0) {
 231                 BIO_puts(bio_err, "out of memory\n");
 232                 goto end;
 233             }
 234             break;
 235         case OPT_PKEYOPT_PASSIN:
 236             if ((pkeyopts_passin == NULL &&
 237                  (pkeyopts_passin = sk_OPENSSL_STRING_new_null()) == NULL) ||
 238                 sk_OPENSSL_STRING_push(pkeyopts_passin, opt_arg()) == 0) {
 239                 BIO_puts(bio_err, "out of memory\n");
 240                 goto end;
 241             }
 242             break;
 243         case OPT_RAWIN:
 244             rawin = 1;
 245             break;
 246         case OPT_DIGEST:
 247             if (!opt_md(opt_arg(), &md))
 248                 goto end;
 249             break;
 250         }
 251     }
 252
 253     /* No extra arguments. */
 254     argc = opt_num_rest();
 255     if (argc != 0)
 256         goto opthelp;
 257
 258     if (rawin && pkey_op != EVP_PKEY_OP_SIGN && pkey_op != EVP_PKEY_OP_VERIFY) {
 259         BIO_printf(bio_err,
 260                    "%s: -rawin can only be used with -sign or -verify\n",
 261                    prog);
 262         goto opthelp;
 263     }
 264
 265     if (md != NULL && !rawin) {
 266         BIO_printf(bio_err,
 267                    "%s: -digest can only be used with -rawin\n",
 268                    prog);
 269         goto opthelp;
 270     }
 271
 272     if (rawin && rev) {
 273         BIO_printf(bio_err, "%s: -rev cannot be used with raw input\n",
 274                    prog);
 275         goto opthelp;
 276     }
 277
 278     if (kdfalg != NULL) {
 279         if (kdflen == 0) {
 280             BIO_printf(bio_err,
 281                        "%s: no KDF length given (-kdflen parameter).\n", prog);
 282             goto opthelp;
 283         }
 284     } else if (inkey == NULL) {
 285         BIO_printf(bio_err,
 286                    "%s: no private key given (-inkey parameter).\n", prog);
 287         goto opthelp;
 288     } else if (peerkey != NULL && pkey_op != EVP_PKEY_OP_DERIVE) {
 289         BIO_printf(bio_err,
 290                    "%s: no peer key given (-peerkey parameter).\n", prog);
 291         goto opthelp;
 292     }
 293     ctx = init_ctx(kdfalg, &keysize, inkey, keyform, key_type,
 294                    passinarg, pkey_op, e, engine_impl, rawin, &pkey,
 295                    libctx);
 296     if (ctx == NULL) {
 297         BIO_printf(bio_err, "%s: Error initializing context\n", prog);
 298         ERR_print_errors(bio_err);
 299         goto end;
 300     }
 301     if (peerkey != NULL && !setup_peer(ctx, peerform, peerkey, e)) {
 302         BIO_printf(bio_err, "%s: Error setting up peer key\n", prog);
 303         ERR_print_errors(bio_err);
 304         goto end;
 305     }
 306     if (pkeyopts != NULL) {
 307         int num = sk_OPENSSL_STRING_num(pkeyopts);
 308         int i;
 309
 310         for (i = 0; i < num; ++i) {
 311             const char *opt = sk_OPENSSL_STRING_value(pkeyopts, i);
 312
 313             if (pkey_ctrl_string(ctx, opt) <= 0) {
 314                 BIO_printf(bio_err, "%s: Can't set parameter \"%s\":\n",
 315                            prog, opt);
 316                 ERR_print_errors(bio_err);
 317                 goto end;
 318             }
 319         }
 320     }
 321     if (pkeyopts_passin != NULL) {
 322         int num = sk_OPENSSL_STRING_num(pkeyopts_passin);
 323         int i;
 324
 325         for (i = 0; i < num; i++) {
 326             char *opt = sk_OPENSSL_STRING_value(pkeyopts_passin, i);
 327             char *passin = strchr(opt, ':');
 328             char *passwd;
 329
 330             if (passin == NULL) {
 331                 /* Get password interactively */
 332                 char passwd_buf[4096];
 333                 int r;
 334
 335                 BIO_snprintf(passwd_buf, sizeof(passwd_buf), "Enter %s: ", opt);
 336                 r = EVP_read_pw_string(passwd_buf, sizeof(passwd_buf) - 1,
 337                                        passwd_buf, 0);
 338                 if (r < 0) {
 339                     if (r == -2)
 340                         BIO_puts(bio_err, "user abort\n");
 341                     else
 342                         BIO_puts(bio_err, "entry failed\n");
 343                     goto end;
 344                 }
 345                 passwd = OPENSSL_strdup(passwd_buf);
 346                 if (passwd == NULL) {
 347                     BIO_puts(bio_err, "out of memory\n");
 348                     goto end;
 349                 }
 350             } else {
 351                 /* Get password as a passin argument: First split option name
 352                  * and passphrase argument into two strings */
 353                 *passin = 0;
 354                 passin++;
 355                 if (app_passwd(passin, NULL, &passwd, NULL) == 0) {
 356                     BIO_printf(bio_err, "failed to get '%s'\n", opt);
 357                     goto end;
 358                 }
 359             }
 360
 361             if (EVP_PKEY_CTX_ctrl_str(ctx, opt, passwd) <= 0) {
 362                 BIO_printf(bio_err, "%s: Can't set parameter \"%s\":\n",
 363                            prog, opt);
 364                 goto end;
 365             }
 366             OPENSSL_free(passwd);
 367         }
 368     }
 369
 370     if (sigfile != NULL && (pkey_op != EVP_PKEY_OP_VERIFY)) {
 371         BIO_printf(bio_err,
 372                    "%s: Signature file specified for non verify\n", prog);
 373         goto end;
 374     }
 375
 376     if (sigfile == NULL && (pkey_op == EVP_PKEY_OP_VERIFY)) {
 377         BIO_printf(bio_err,
 378                    "%s: No signature file specified for verify\n", prog);
 379         goto end;
 380     }
 381
 382     if (pkey_op != EVP_PKEY_OP_DERIVE) {
 383         in = bio_open_default(infile, 'r', FORMAT_BINARY);
 384         if (infile != NULL) {
 385             struct stat st;
 386
 387             if (stat(infile, &st) == 0 && st.st_size <= INT_MAX)
 388                 filesize = (int)st.st_size;
 389         }
 390         if (in == NULL)
 391             goto end;
 392     }
 393     out = bio_open_default(outfile, 'w', FORMAT_BINARY);
 394     if (out == NULL)
 395         goto end;
 396
 397     if (sigfile != NULL) {
 398         BIO *sigbio = BIO_new_file(sigfile, "rb");
 399
 400         if (sigbio == NULL) {
 401             BIO_printf(bio_err, "Can't open signature file %s\n", sigfile);
 402             goto end;
 403         }
 404         siglen = bio_to_mem(&sig, keysize * 10, sigbio);
 405         BIO_free(sigbio);
 406         if (siglen < 0) {
 407             BIO_printf(bio_err, "Error reading signature data\n");
 408             goto end;
 409         }
 410     }
 411
 412     /* Raw input data is handled elsewhere */
 413     if (in != NULL && !rawin) {
 414         /* Read the input data */
 415         buf_inlen = bio_to_mem(&buf_in, keysize * 10, in);
 416         if (buf_inlen < 0) {
 417             BIO_printf(bio_err, "Error reading input Data\n");
 418             goto end;
 419         }
 420         if (rev) {
 421             size_t i;
 422             unsigned char ctmp;
 423             size_t l = (size_t)buf_inlen;
 424             for (i = 0; i < l / 2; i++) {
 425                 ctmp = buf_in[i];
 426                 buf_in[i] = buf_in[l - 1 - i];
 427                 buf_in[l - 1 - i] = ctmp;
 428             }
 429         }
 430     }
 431
 432     /* Sanity check the input if the input is not raw */
 433     if (!rawin
 434             && buf_inlen > EVP_MAX_MD_SIZE
 435             && (pkey_op == EVP_PKEY_OP_SIGN
 436                 || pkey_op == EVP_PKEY_OP_VERIFY)) {
 437         BIO_printf(bio_err,
 438                    "Error: The input data looks too long to be a hash\n");
 439         goto end;
 440     }
 441
 442     if (pkey_op == EVP_PKEY_OP_VERIFY) {
 443         if (rawin) {
 444             rv = do_raw_keyop(pkey_op, ctx, md, pkey, in, filesize, sig, siglen,
 445                               NULL, 0);
 446         } else {
 447             rv = EVP_PKEY_verify(ctx, sig, (size_t)siglen,
 448                                  buf_in, (size_t)buf_inlen);
 449         }
 450         if (rv == 1) {
 451             BIO_puts(out, "Signature Verified Successfully\n");
 452             ret = 0;
 453         } else {
 454             BIO_puts(out, "Signature Verification Failure\n");
 455         }
 456         goto end;
 457     }
 458     if (kdflen != 0) {
 459         buf_outlen = kdflen;
 460         rv = 1;
 461     } else {
 462         if (rawin) {
 463             /* rawin allocates the buffer in do_raw_keyop() */
 464             rv = do_raw_keyop(pkey_op, ctx, md, pkey, in, filesize, NULL, 0,
 465                               &buf_out, (size_t *)&buf_outlen);
 466         } else {
 467             rv = do_keyop(ctx, pkey_op, NULL, (size_t *)&buf_outlen,
 468                           buf_in, (size_t)buf_inlen);
 469             if (rv > 0 && buf_outlen != 0) {
 470                 buf_out = app_malloc(buf_outlen, "buffer output");
 471                 rv = do_keyop(ctx, pkey_op,
 472                               buf_out, (size_t *)&buf_outlen,
 473                               buf_in, (size_t)buf_inlen);
 474             }
 475         }
 476     }
 477     if (rv <= 0) {
 478         if (pkey_op != EVP_PKEY_OP_DERIVE) {
 479             BIO_puts(bio_err, "Public Key operation error\n");
 480         } else {
 481             BIO_puts(bio_err, "Key derivation failed\n");
 482         }
 483         ERR_print_errors(bio_err);
 484         goto end;
 485     }
 486     ret = 0;
 487
 488     if (asn1parse) {
 489         if (!ASN1_parse_dump(out, buf_out, buf_outlen, 1, -1))
 490             ERR_print_errors(bio_err);
 491     } else if (hexdump) {
 492         BIO_dump(out, (char *)buf_out, buf_outlen);
 493     } else {
 494         BIO_write(out, buf_out, buf_outlen);
 495     }
 496
 497  end:
 498     EVP_PKEY_CTX_free(ctx);
 499     release_engine(e);
 500     BIO_free(in);
 501     BIO_free_all(out);
 502     OPENSSL_free(buf_in);
 503     OPENSSL_free(buf_out);
 504     OPENSSL_free(sig);
 505     sk_OPENSSL_STRING_free(pkeyopts);
 506     sk_OPENSSL_STRING_free(pkeyopts_passin);
 507     NCONF_free(conf);
 508     return ret;
 509 }
 510
 511 static EVP_PKEY_CTX *init_ctx(const char *kdfalg, int *pkeysize,
 512                               const char *keyfile, int keyform, int key_type,
 513                               char *passinarg, int pkey_op, ENGINE *e,
 514                               const int engine_impl, int rawin,
 515                               EVP_PKEY **ppkey,
 516                               OSSL_LIB_CTX *libctx)
 517 {
 518     EVP_PKEY *pkey = NULL;
 519     EVP_PKEY_CTX *ctx = NULL;
 520     ENGINE *impl = NULL;
 521     char *passin = NULL;
 522     int rv = -1;
 523     X509 *x;
 524
 525     if (((pkey_op == EVP_PKEY_OP_SIGN) || (pkey_op == EVP_PKEY_OP_DECRYPT)
 526          || (pkey_op == EVP_PKEY_OP_DERIVE))
 527         && (key_type != KEY_PRIVKEY && kdfalg == NULL)) {
 528         BIO_printf(bio_err, "A private key is needed for this operation\n");
 529         goto end;
 530     }
 531     if (!app_passwd(passinarg, NULL, &passin, NULL)) {
 532         BIO_printf(bio_err, "Error getting password\n");
 533         goto end;
 534     }
 535     switch (key_type) {
 536     case KEY_PRIVKEY:
 537         pkey = load_key(keyfile, keyform, 0, passin, e, "private key");
 538         break;
 539
 540     case KEY_PUBKEY:
 541         pkey = load_pubkey(keyfile, keyform, 0, NULL, e, "public key");
 542         break;
 543
 544     case KEY_CERT:
 545         x = load_cert(keyfile, "Certificate");
 546         if (x) {
 547             pkey = X509_get_pubkey(x);
 548             X509_free(x);
 549         }
 550         break;
 551
 552     case KEY_NONE:
 553         break;
 554
 555     }
 556
 557 #ifndef OPENSSL_NO_ENGINE
 558     if (engine_impl)
 559         impl = e;
 560 #endif
 561
 562     if (kdfalg != NULL) {
 563         int kdfnid = OBJ_sn2nid(kdfalg);
 564
 565         if (kdfnid == NID_undef) {
 566             kdfnid = OBJ_ln2nid(kdfalg);
 567             if (kdfnid == NID_undef) {
 568                 BIO_printf(bio_err, "The given KDF \"%s\" is unknown.\n",
 569                            kdfalg);
 570                 goto end;
 571             }
 572         }
 573         if (impl != NULL)
 574             ctx = EVP_PKEY_CTX_new_id(kdfnid, impl);
 575         else
 576             ctx = EVP_PKEY_CTX_new_from_name(libctx, kdfalg, app_get0_propq());
 577     } else {
 578         if (pkey == NULL)
 579             goto end;
 580
 581         *pkeysize = EVP_PKEY_size(pkey);
 582         if (impl != NULL)
 583             ctx = EVP_PKEY_CTX_new(pkey, impl);
 584         else
 585             ctx = EVP_PKEY_CTX_new_from_pkey(libctx, pkey, app_get0_propq());
 586         if (ppkey != NULL)
 587             *ppkey = pkey;
 588         EVP_PKEY_free(pkey);
 589     }
 590
 591     if (ctx == NULL)
 592         goto end;
 593
 594     /*
 595      * If rawin then we don't need to actually initialise the EVP_PKEY_CTX
 596      * itself. That will get initialised during EVP_DigestSignInit or
 597      * EVP_DigestVerifyInit.
 598      */
 599     if (rawin) {
 600         rv = 1;
 601     } else {
 602         switch (pkey_op) {
 603         case EVP_PKEY_OP_SIGN:
 604             rv = EVP_PKEY_sign_init(ctx);
 605             break;
 606
 607         case EVP_PKEY_OP_VERIFY:
 608             rv = EVP_PKEY_verify_init(ctx);
 609             break;
 610
 611         case EVP_PKEY_OP_VERIFYRECOVER:
 612             rv = EVP_PKEY_verify_recover_init(ctx);
 613             break;
 614
 615         case EVP_PKEY_OP_ENCRYPT:
 616             rv = EVP_PKEY_encrypt_init(ctx);
 617             break;
 618
 619         case EVP_PKEY_OP_DECRYPT:
 620             rv = EVP_PKEY_decrypt_init(ctx);
 621             break;
 622
 623         case EVP_PKEY_OP_DERIVE:
 624             rv = EVP_PKEY_derive_init(ctx);
 625             break;
 626         }
 627     }
 628
 629     if (rv <= 0) {
 630         EVP_PKEY_CTX_free(ctx);
 631         ctx = NULL;
 632     }
 633
 634  end:
 635     OPENSSL_free(passin);
 636     return ctx;
 637
 638 }
 639
 640 static int setup_peer(EVP_PKEY_CTX *ctx, int peerform, const char *file,
 641                       ENGINE *e)
 642 {
 643     EVP_PKEY *peer = NULL;
 644     ENGINE *engine = NULL;
 645     int ret;
 646
 647     if (peerform == FORMAT_ENGINE)
 648         engine = e;
 649     peer = load_pubkey(file, peerform, 0, NULL, engine, "peer key");
 650     if (peer == NULL) {
 651         BIO_printf(bio_err, "Error reading peer key %s\n", file);
 652         ERR_print_errors(bio_err);
 653         return 0;
 654     }
 655
 656     ret = EVP_PKEY_derive_set_peer(ctx, peer);
 657
 658     EVP_PKEY_free(peer);
 659     if (ret <= 0)
 660         ERR_print_errors(bio_err);
 661     return ret;
 662 }
 663
 664 static int do_keyop(EVP_PKEY_CTX *ctx, int pkey_op,
 665                     unsigned char *out, size_t *poutlen,
 666                     const unsigned char *in, size_t inlen)
 667 {
 668     int rv = 0;
 669     switch (pkey_op) {
 670     case EVP_PKEY_OP_VERIFYRECOVER:
 671         rv = EVP_PKEY_verify_recover(ctx, out, poutlen, in, inlen);
 672         break;
 673
 674     case EVP_PKEY_OP_SIGN:
 675         rv = EVP_PKEY_sign(ctx, out, poutlen, in, inlen);
 676         break;
 677
 678     case EVP_PKEY_OP_ENCRYPT:
 679         rv = EVP_PKEY_encrypt(ctx, out, poutlen, in, inlen);
 680         break;
 681
 682     case EVP_PKEY_OP_DECRYPT:
 683         rv = EVP_PKEY_decrypt(ctx, out, poutlen, in, inlen);
 684         break;
 685
 686     case EVP_PKEY_OP_DERIVE:
 687         rv = EVP_PKEY_derive(ctx, out, poutlen);
 688         break;
 689
 690     }
 691     return rv;
 692 }
 693
 694 #define TBUF_MAXSIZE 2048
 695
 696 static int do_raw_keyop(int pkey_op, EVP_PKEY_CTX *ctx,
 697                         const EVP_MD *md, EVP_PKEY *pkey, BIO *in,
 698                         int filesize, unsigned char *sig, int siglen,
 699                         unsigned char **out, size_t *poutlen)
 700 {
 701     int rv = 0;
 702     EVP_MD_CTX *mctx = NULL;
 703     unsigned char tbuf[TBUF_MAXSIZE];
 704     unsigned char *mbuf = NULL;
 705     int buf_len = 0;
 706
 707     if ((mctx = EVP_MD_CTX_new()) == NULL) {
 708         BIO_printf(bio_err, "Error: out of memory\n");
 709         return rv;
 710     }
 711     EVP_MD_CTX_set_pkey_ctx(mctx, ctx);
 712
 713     /* Some algorithms only support oneshot digests */
 714     if (EVP_PKEY_id(pkey) == EVP_PKEY_ED25519
 715             || EVP_PKEY_id(pkey) == EVP_PKEY_ED448) {
 716         if (filesize < 0) {
 717             BIO_printf(bio_err,
 718                        "Error: unable to determine file size for oneshot operation\n");
 719             goto end;
 720         }
 721         mbuf = app_malloc(filesize, "oneshot sign/verify buffer");
 722         switch(pkey_op) {
 723         case EVP_PKEY_OP_VERIFY:
 724             if (EVP_DigestVerifyInit(mctx, NULL, md, NULL, pkey) != 1)
 725                 goto end;
 726             buf_len = BIO_read(in, mbuf, filesize);
 727             if (buf_len != filesize) {
 728                 BIO_printf(bio_err, "Error reading raw input data\n");
 729                 goto end;
 730             }
 731             rv = EVP_DigestVerify(mctx, sig, (size_t)siglen, mbuf, buf_len);
 732             break;
 733         case EVP_PKEY_OP_SIGN:
 734             if (EVP_DigestSignInit(mctx, NULL, md, NULL, pkey) != 1)
 735                 goto end;
 736             buf_len = BIO_read(in, mbuf, filesize);
 737             if (buf_len != filesize) {
 738                 BIO_printf(bio_err, "Error reading raw input data\n");
 739                 goto end;
 740             }
 741             rv = EVP_DigestSign(mctx, NULL, poutlen, mbuf, buf_len);
 742             if (rv == 1 && out != NULL) {
 743                 *out = app_malloc(*poutlen, "buffer output");
 744                 rv = EVP_DigestSign(mctx, *out, poutlen, mbuf, buf_len);
 745             }
 746             break;
 747         }
 748         goto end;
 749     }
 750
 751     switch(pkey_op) {
 752     case EVP_PKEY_OP_VERIFY:
 753         if (EVP_DigestVerifyInit(mctx, NULL, md, NULL, pkey) != 1)
 754             goto end;
 755         for (;;) {
 756             buf_len = BIO_read(in, tbuf, TBUF_MAXSIZE);
 757             if (buf_len == 0)
 758                 break;
 759             if (buf_len < 0) {
 760                 BIO_printf(bio_err, "Error reading raw input data\n");
 761                 goto end;
 762             }
 763             rv = EVP_DigestVerifyUpdate(mctx, tbuf, (size_t)buf_len);
 764             if (rv != 1) {
 765                 BIO_printf(bio_err, "Error verifying raw input data\n");
 766                 goto end;
 767             }
 768         }
 769         rv = EVP_DigestVerifyFinal(mctx, sig, (size_t)siglen);
 770         break;
 771     case EVP_PKEY_OP_SIGN:
 772         if (EVP_DigestSignInit(mctx, NULL, md, NULL, pkey) != 1)
 773             goto end;
 774         for (;;) {
 775             buf_len = BIO_read(in, tbuf, TBUF_MAXSIZE);
 776             if (buf_len == 0)
 777                 break;
 778             if (buf_len < 0) {
 779                 BIO_printf(bio_err, "Error reading raw input data\n");
 780                 goto end;
 781             }
 782             rv = EVP_DigestSignUpdate(mctx, tbuf, (size_t)buf_len);
 783             if (rv != 1) {
 784                 BIO_printf(bio_err, "Error signing raw input data\n");
 785                 goto end;
 786             }
 787         }
 788         rv = EVP_DigestSignFinal(mctx, NULL, poutlen);
 789         if (rv == 1 && out != NULL) {
 790             *out = app_malloc(*poutlen, "buffer output");
 791             rv = EVP_DigestSignFinal(mctx, *out, poutlen);
 792         }
 793         break;
 794     }
 795
 796  end:
 797     OPENSSL_free(mbuf);
 798     EVP_MD_CTX_free(mctx);
 799     return rv;
 800 }