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