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                 int r;
 335
 336                 BIO_snprintf(passwd_buf, sizeof(passwd_buf), "Enter %s: ", opt);
 337                 r = EVP_read_pw_string(passwd_buf, sizeof(passwd_buf) - 1,
 338                                        passwd_buf, 0);
 339                 if (r < 0) {
 340                     if (r == -2)
 341                         BIO_puts(bio_err, "user abort\n");
 342                     else
 343                         BIO_puts(bio_err, "entry failed\n");
 344                     goto end;
 345                 }
 346                 passwd = OPENSSL_strdup(passwd_buf);
 347                 if (passwd == NULL) {
 348                     BIO_puts(bio_err, "out of memory\n");
 349                     goto end;
 350                 }
 351             } else {
 352                 /* Get password as a passin argument: First split option name
 353                  * and passphrase argument into two strings */
 354                 *passin = 0;
 355                 passin++;
 356                 if (app_passwd(passin, NULL, &passwd, NULL) == 0) {
 357                     BIO_printf(bio_err, "failed to get '%s'\n", opt);
 358                     goto end;
 359                 }
 360             }
 361
 362             if (EVP_PKEY_CTX_ctrl_str(ctx, opt, passwd) <= 0) {
 363                 BIO_printf(bio_err, "%s: Can't set parameter \"%s\":\n",
 364                            prog, opt);
 365                 goto end;
 366             }
 367             OPENSSL_free(passwd);
 368         }
 369     }
 370
 371     if (sigfile != NULL && (pkey_op != EVP_PKEY_OP_VERIFY)) {
 372         BIO_printf(bio_err,
 373                    "%s: Signature file specified for non verify\n", prog);
 374         goto end;
 375     }
 376
 377     if (sigfile == NULL && (pkey_op == EVP_PKEY_OP_VERIFY)) {
 378         BIO_printf(bio_err,
 379                    "%s: No signature file specified for verify\n", prog);
 380         goto end;
 381     }
 382
 383     if (pkey_op != EVP_PKEY_OP_DERIVE) {
 384         in = bio_open_default(infile, 'r', FORMAT_BINARY);
 385         if (infile != NULL) {
 386             struct stat st;
 387
 388             if (stat(infile, &st) == 0 && st.st_size <= INT_MAX)
 389                 filesize = (int)st.st_size;
 390         }
 391         if (in == NULL)
 392             goto end;
 393     }
 394     out = bio_open_default(outfile, 'w', FORMAT_BINARY);
 395     if (out == NULL)
 396         goto end;
 397
 398     if (sigfile != NULL) {
 399         BIO *sigbio = BIO_new_file(sigfile, "rb");
 400
 401         if (sigbio == NULL) {
 402             BIO_printf(bio_err, "Can't open signature file %s\n", sigfile);
 403             goto end;
 404         }
 405         siglen = bio_to_mem(&sig, keysize * 10, sigbio);
 406         BIO_free(sigbio);
 407         if (siglen < 0) {
 408             BIO_printf(bio_err, "Error reading signature data\n");
 409             goto end;
 410         }
 411     }
 412
 413     /* Raw input data is handled elsewhere */
 414     if (in != NULL && !rawin) {
 415         /* Read the input data */
 416         buf_inlen = bio_to_mem(&buf_in, keysize * 10, in);
 417         if (buf_inlen < 0) {
 418             BIO_printf(bio_err, "Error reading input Data\n");
 419             goto end;
 420         }
 421         if (rev) {
 422             size_t i;
 423             unsigned char ctmp;
 424             size_t l = (size_t)buf_inlen;
 425             for (i = 0; i < l / 2; i++) {
 426                 ctmp = buf_in[i];
 427                 buf_in[i] = buf_in[l - 1 - i];
 428                 buf_in[l - 1 - i] = ctmp;
 429             }
 430         }
 431     }
 432
 433     /* Sanity check the input if the input is not raw */
 434     if (!rawin
 435             && buf_inlen > EVP_MAX_MD_SIZE
 436             && (pkey_op == EVP_PKEY_OP_SIGN
 437                 || pkey_op == EVP_PKEY_OP_VERIFY)) {
 438         BIO_printf(bio_err,
 439                    "Error: The input data looks too long to be a hash\n");
 440         goto end;
 441     }
 442
 443     if (pkey_op == EVP_PKEY_OP_VERIFY) {
 444         if (rawin) {
 445             rv = do_raw_keyop(pkey_op, ctx, md, pkey, in, filesize, sig, siglen,
 446                               NULL, 0);
 447         } else {
 448             rv = EVP_PKEY_verify(ctx, sig, (size_t)siglen,
 449                                  buf_in, (size_t)buf_inlen);
 450         }
 451         if (rv == 1) {
 452             BIO_puts(out, "Signature Verified Successfully\n");
 453             ret = 0;
 454         } else {
 455             BIO_puts(out, "Signature Verification Failure\n");
 456         }
 457         goto end;
 458     }
 459     if (kdflen != 0) {
 460         buf_outlen = kdflen;
 461         rv = 1;
 462     } else {
 463         if (rawin) {
 464             /* rawin allocates the buffer in do_raw_keyop() */
 465             rv = do_raw_keyop(pkey_op, ctx, md, pkey, in, filesize, NULL, 0,
 466                               &buf_out, (size_t *)&buf_outlen);
 467         } else {
 468             rv = do_keyop(ctx, pkey_op, NULL, (size_t *)&buf_outlen,
 469                           buf_in, (size_t)buf_inlen);
 470             if (rv > 0 && buf_outlen != 0) {
 471                 buf_out = app_malloc(buf_outlen, "buffer output");
 472                 rv = do_keyop(ctx, pkey_op,
 473                               buf_out, (size_t *)&buf_outlen,
 474                               buf_in, (size_t)buf_inlen);
 475             }
 476         }
 477     }
 478     if (rv <= 0) {
 479         if (pkey_op != EVP_PKEY_OP_DERIVE) {
 480             BIO_puts(bio_err, "Public Key operation error\n");
 481         } else {
 482             BIO_puts(bio_err, "Key derivation failed\n");
 483         }
 484         ERR_print_errors(bio_err);
 485         goto end;
 486     }
 487     ret = 0;
 488
 489     if (asn1parse) {
 490         if (!ASN1_parse_dump(out, buf_out, buf_outlen, 1, -1))
 491             ERR_print_errors(bio_err);
 492     } else if (hexdump) {
 493         BIO_dump(out, (char *)buf_out, buf_outlen);
 494     } else {
 495         BIO_write(out, buf_out, buf_outlen);
 496     }
 497
 498  end:
 499     EVP_PKEY_CTX_free(ctx);
 500     release_engine(e);
 501     BIO_free(in);
 502     BIO_free_all(out);
 503     OPENSSL_free(buf_in);
 504     OPENSSL_free(buf_out);
 505     OPENSSL_free(sig);
 506     sk_OPENSSL_STRING_free(pkeyopts);
 507     sk_OPENSSL_STRING_free(pkeyopts_passin);
 508     NCONF_free(conf);
 509     return ret;
 510 }
 511
 512 static EVP_PKEY_CTX *init_ctx(const char *kdfalg, int *pkeysize,
 513                               const char *keyfile, int keyform, int key_type,
 514                               char *passinarg, int pkey_op, ENGINE *e,
 515                               const int engine_impl, int rawin,
 516                               EVP_PKEY **ppkey,
 517                               OPENSSL_CTX *libctx, const char *propq)
 518 {
 519     EVP_PKEY *pkey = NULL;
 520     EVP_PKEY_CTX *ctx = NULL;
 521     ENGINE *impl = NULL;
 522     char *passin = NULL;
 523     int rv = -1;
 524     X509 *x;
 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, FORMAT_UNDEF, "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, 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, 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 }