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     app_RAND_load();
 259
 260     if (rawin && pkey_op != EVP_PKEY_OP_SIGN && pkey_op != EVP_PKEY_OP_VERIFY) {
 261         BIO_printf(bio_err,
 262                    "%s: -rawin can only be used with -sign or -verify\n",
 263                    prog);
 264         goto opthelp;
 265     }
 266
 267     if (md != NULL && !rawin) {
 268         BIO_printf(bio_err,
 269                    "%s: -digest can only be used with -rawin\n",
 270                    prog);
 271         goto opthelp;
 272     }
 273
 274     if (rawin && rev) {
 275         BIO_printf(bio_err, "%s: -rev cannot be used with raw input\n",
 276                    prog);
 277         goto opthelp;
 278     }
 279
 280     if (kdfalg != NULL) {
 281         if (kdflen == 0) {
 282             BIO_printf(bio_err,
 283                        "%s: no KDF length given (-kdflen parameter).\n", prog);
 284             goto opthelp;
 285         }
 286     } else if (inkey == NULL) {
 287         BIO_printf(bio_err,
 288                    "%s: no private key given (-inkey parameter).\n", prog);
 289         goto opthelp;
 290     } else if (peerkey != NULL && pkey_op != EVP_PKEY_OP_DERIVE) {
 291         BIO_printf(bio_err,
 292                    "%s: no peer key given (-peerkey parameter).\n", prog);
 293         goto opthelp;
 294     }
 295     ctx = init_ctx(kdfalg, &keysize, inkey, keyform, key_type,
 296                    passinarg, pkey_op, e, engine_impl, rawin, &pkey,
 297                    libctx);
 298     if (ctx == NULL) {
 299         BIO_printf(bio_err, "%s: Error initializing context\n", prog);
 300         ERR_print_errors(bio_err);
 301         goto end;
 302     }
 303     if (peerkey != NULL && !setup_peer(ctx, peerform, peerkey, e)) {
 304         BIO_printf(bio_err, "%s: Error setting up peer key\n", prog);
 305         ERR_print_errors(bio_err);
 306         goto end;
 307     }
 308     if (pkeyopts != NULL) {
 309         int num = sk_OPENSSL_STRING_num(pkeyopts);
 310         int i;
 311
 312         for (i = 0; i < num; ++i) {
 313             const char *opt = sk_OPENSSL_STRING_value(pkeyopts, i);
 314
 315             if (pkey_ctrl_string(ctx, opt) <= 0) {
 316                 BIO_printf(bio_err, "%s: Can't set parameter \"%s\":\n",
 317                            prog, opt);
 318                 ERR_print_errors(bio_err);
 319                 goto end;
 320             }
 321         }
 322     }
 323     if (pkeyopts_passin != NULL) {
 324         int num = sk_OPENSSL_STRING_num(pkeyopts_passin);
 325         int i;
 326
 327         for (i = 0; i < num; i++) {
 328             char *opt = sk_OPENSSL_STRING_value(pkeyopts_passin, i);
 329             char *passin = strchr(opt, ':');
 330             char *passwd;
 331
 332             if (passin == NULL) {
 333                 /* Get password interactively */
 334                 char passwd_buf[4096];
 335                 int r;
 336
 337                 BIO_snprintf(passwd_buf, sizeof(passwd_buf), "Enter %s: ", opt);
 338                 r = EVP_read_pw_string(passwd_buf, sizeof(passwd_buf) - 1,
 339                                        passwd_buf, 0);
 340                 if (r < 0) {
 341                     if (r == -2)
 342                         BIO_puts(bio_err, "user abort\n");
 343                     else
 344                         BIO_puts(bio_err, "entry failed\n");
 345                     goto end;
 346                 }
 347                 passwd = OPENSSL_strdup(passwd_buf);
 348                 if (passwd == NULL) {
 349                     BIO_puts(bio_err, "out of memory\n");
 350                     goto end;
 351                 }
 352             } else {
 353                 /* Get password as a passin argument: First split option name
 354                  * and passphrase argument into two strings */
 355                 *passin = 0;
 356                 passin++;
 357                 if (app_passwd(passin, NULL, &passwd, NULL) == 0) {
 358                     BIO_printf(bio_err, "failed to get '%s'\n", opt);
 359                     goto end;
 360                 }
 361             }
 362
 363             if (EVP_PKEY_CTX_ctrl_str(ctx, opt, passwd) <= 0) {
 364                 BIO_printf(bio_err, "%s: Can't set parameter \"%s\":\n",
 365                            prog, opt);
 366                 goto end;
 367             }
 368             OPENSSL_free(passwd);
 369         }
 370     }
 371
 372     if (sigfile != NULL && (pkey_op != EVP_PKEY_OP_VERIFY)) {
 373         BIO_printf(bio_err,
 374                    "%s: Signature file specified for non verify\n", prog);
 375         goto end;
 376     }
 377
 378     if (sigfile == NULL && (pkey_op == EVP_PKEY_OP_VERIFY)) {
 379         BIO_printf(bio_err,
 380                    "%s: No signature file specified for verify\n", prog);
 381         goto end;
 382     }
 383
 384     if (pkey_op != EVP_PKEY_OP_DERIVE) {
 385         in = bio_open_default(infile, 'r', FORMAT_BINARY);
 386         if (infile != NULL) {
 387             struct stat st;
 388
 389             if (stat(infile, &st) == 0 && st.st_size <= INT_MAX)
 390                 filesize = (int)st.st_size;
 391         }
 392         if (in == NULL)
 393             goto end;
 394     }
 395     out = bio_open_default(outfile, 'w', FORMAT_BINARY);
 396     if (out == NULL)
 397         goto end;
 398
 399     if (sigfile != NULL) {
 400         BIO *sigbio = BIO_new_file(sigfile, "rb");
 401
 402         if (sigbio == NULL) {
 403             BIO_printf(bio_err, "Can't open signature file %s\n", sigfile);
 404             goto end;
 405         }
 406         siglen = bio_to_mem(&sig, keysize * 10, sigbio);
 407         BIO_free(sigbio);
 408         if (siglen < 0) {
 409             BIO_printf(bio_err, "Error reading signature data\n");
 410             goto end;
 411         }
 412     }
 413
 414     /* Raw input data is handled elsewhere */
 415     if (in != NULL && !rawin) {
 416         /* Read the input data */
 417         buf_inlen = bio_to_mem(&buf_in, keysize * 10, in);
 418         if (buf_inlen < 0) {
 419             BIO_printf(bio_err, "Error reading input Data\n");
 420             goto end;
 421         }
 422         if (rev) {
 423             size_t i;
 424             unsigned char ctmp;
 425             size_t l = (size_t)buf_inlen;
 426             for (i = 0; i < l / 2; i++) {
 427                 ctmp = buf_in[i];
 428                 buf_in[i] = buf_in[l - 1 - i];
 429                 buf_in[l - 1 - i] = ctmp;
 430             }
 431         }
 432     }
 433
 434     /* Sanity check the input if the input is not raw */
 435     if (!rawin
 436             && buf_inlen > EVP_MAX_MD_SIZE
 437             && (pkey_op == EVP_PKEY_OP_SIGN
 438                 || pkey_op == EVP_PKEY_OP_VERIFY)) {
 439         BIO_printf(bio_err,
 440                    "Error: The input data looks too long to be a hash\n");
 441         goto end;
 442     }
 443
 444     if (pkey_op == EVP_PKEY_OP_VERIFY) {
 445         if (rawin) {
 446             rv = do_raw_keyop(pkey_op, ctx, md, pkey, in, filesize, sig, siglen,
 447                               NULL, 0);
 448         } else {
 449             rv = EVP_PKEY_verify(ctx, sig, (size_t)siglen,
 450                                  buf_in, (size_t)buf_inlen);
 451         }
 452         if (rv == 1) {
 453             BIO_puts(out, "Signature Verified Successfully\n");
 454             ret = 0;
 455         } else {
 456             BIO_puts(out, "Signature Verification Failure\n");
 457         }
 458         goto end;
 459     }
 460     if (kdflen != 0) {
 461         buf_outlen = kdflen;
 462         rv = 1;
 463     } else {
 464         if (rawin) {
 465             /* rawin allocates the buffer in do_raw_keyop() */
 466             rv = do_raw_keyop(pkey_op, ctx, md, pkey, in, filesize, NULL, 0,
 467                               &buf_out, (size_t *)&buf_outlen);
 468         } else {
 469             rv = do_keyop(ctx, pkey_op, NULL, (size_t *)&buf_outlen,
 470                           buf_in, (size_t)buf_inlen);
 471             if (rv > 0 && buf_outlen != 0) {
 472                 buf_out = app_malloc(buf_outlen, "buffer output");
 473                 rv = do_keyop(ctx, pkey_op,
 474                               buf_out, (size_t *)&buf_outlen,
 475                               buf_in, (size_t)buf_inlen);
 476             }
 477         }
 478     }
 479     if (rv <= 0) {
 480         if (pkey_op != EVP_PKEY_OP_DERIVE) {
 481             BIO_puts(bio_err, "Public Key operation error\n");
 482         } else {
 483             BIO_puts(bio_err, "Key derivation failed\n");
 484         }
 485         ERR_print_errors(bio_err);
 486         goto end;
 487     }
 488     ret = 0;
 489
 490     if (asn1parse) {
 491         if (!ASN1_parse_dump(out, buf_out, buf_outlen, 1, -1))
 492             ERR_print_errors(bio_err);
 493     } else if (hexdump) {
 494         BIO_dump(out, (char *)buf_out, buf_outlen);
 495     } else {
 496         BIO_write(out, buf_out, buf_outlen);
 497     }
 498
 499  end:
 500     EVP_PKEY_CTX_free(ctx);
 501     release_engine(e);
 502     BIO_free(in);
 503     BIO_free_all(out);
 504     OPENSSL_free(buf_in);
 505     OPENSSL_free(buf_out);
 506     OPENSSL_free(sig);
 507     sk_OPENSSL_STRING_free(pkeyopts);
 508     sk_OPENSSL_STRING_free(pkeyopts_passin);
 509     NCONF_free(conf);
 510     return ret;
 511 }
 512
 513 static EVP_PKEY_CTX *init_ctx(const char *kdfalg, int *pkeysize,
 514                               const char *keyfile, int keyform, int key_type,
 515                               char *passinarg, int pkey_op, ENGINE *e,
 516                               const int engine_impl, int rawin,
 517                               EVP_PKEY **ppkey,
 518                               OSSL_LIB_CTX *libctx)
 519 {
 520     EVP_PKEY *pkey = NULL;
 521     EVP_PKEY_CTX *ctx = NULL;
 522     ENGINE *impl = NULL;
 523     char *passin = NULL;
 524     int rv = -1;
 525     X509 *x;
 526
 527     if (((pkey_op == EVP_PKEY_OP_SIGN) || (pkey_op == EVP_PKEY_OP_DECRYPT)
 528          || (pkey_op == EVP_PKEY_OP_DERIVE))
 529         && (key_type != KEY_PRIVKEY && kdfalg == NULL)) {
 530         BIO_printf(bio_err, "A private key is needed for this operation\n");
 531         goto end;
 532     }
 533     if (!app_passwd(passinarg, NULL, &passin, NULL)) {
 534         BIO_printf(bio_err, "Error getting password\n");
 535         goto end;
 536     }
 537     switch (key_type) {
 538     case KEY_PRIVKEY:
 539         pkey = load_key(keyfile, keyform, 0, passin, e, "private key");
 540         break;
 541
 542     case KEY_PUBKEY:
 543         pkey = load_pubkey(keyfile, keyform, 0, NULL, e, "public key");
 544         break;
 545
 546     case KEY_CERT:
 547         x = load_cert(keyfile, "Certificate");
 548         if (x) {
 549             pkey = X509_get_pubkey(x);
 550             X509_free(x);
 551         }
 552         break;
 553
 554     case KEY_NONE:
 555         break;
 556
 557     }
 558
 559 #ifndef OPENSSL_NO_ENGINE
 560     if (engine_impl)
 561         impl = e;
 562 #endif
 563
 564     if (kdfalg != NULL) {
 565         int kdfnid = OBJ_sn2nid(kdfalg);
 566
 567         if (kdfnid == NID_undef) {
 568             kdfnid = OBJ_ln2nid(kdfalg);
 569             if (kdfnid == NID_undef) {
 570                 BIO_printf(bio_err, "The given KDF \"%s\" is unknown.\n",
 571                            kdfalg);
 572                 goto end;
 573             }
 574         }
 575         if (impl != NULL)
 576             ctx = EVP_PKEY_CTX_new_id(kdfnid, impl);
 577         else
 578             ctx = EVP_PKEY_CTX_new_from_name(libctx, kdfalg, app_get0_propq());
 579     } else {
 580         if (pkey == NULL)
 581             goto end;
 582
 583         *pkeysize = EVP_PKEY_size(pkey);
 584         if (impl != NULL)
 585             ctx = EVP_PKEY_CTX_new(pkey, impl);
 586         else
 587             ctx = EVP_PKEY_CTX_new_from_pkey(libctx, pkey, app_get0_propq());
 588         if (ppkey != NULL)
 589             *ppkey = pkey;
 590         EVP_PKEY_free(pkey);
 591     }
 592
 593     if (ctx == NULL)
 594         goto end;
 595
 596     /*
 597      * If rawin then we don't need to actually initialise the EVP_PKEY_CTX
 598      * itself. That will get initialised during EVP_DigestSignInit or
 599      * EVP_DigestVerifyInit.
 600      */
 601     if (rawin) {
 602         rv = 1;
 603     } else {
 604         switch (pkey_op) {
 605         case EVP_PKEY_OP_SIGN:
 606             rv = EVP_PKEY_sign_init(ctx);
 607             break;
 608
 609         case EVP_PKEY_OP_VERIFY:
 610             rv = EVP_PKEY_verify_init(ctx);
 611             break;
 612
 613         case EVP_PKEY_OP_VERIFYRECOVER:
 614             rv = EVP_PKEY_verify_recover_init(ctx);
 615             break;
 616
 617         case EVP_PKEY_OP_ENCRYPT:
 618             rv = EVP_PKEY_encrypt_init(ctx);
 619             break;
 620
 621         case EVP_PKEY_OP_DECRYPT:
 622             rv = EVP_PKEY_decrypt_init(ctx);
 623             break;
 624
 625         case EVP_PKEY_OP_DERIVE:
 626             rv = EVP_PKEY_derive_init(ctx);
 627             break;
 628         }
 629     }
 630
 631     if (rv <= 0) {
 632         EVP_PKEY_CTX_free(ctx);
 633         ctx = NULL;
 634     }
 635
 636  end:
 637     OPENSSL_free(passin);
 638     return ctx;
 639
 640 }
 641
 642 static int setup_peer(EVP_PKEY_CTX *ctx, int peerform, const char *file,
 643                       ENGINE *e)
 644 {
 645     EVP_PKEY *peer = NULL;
 646     ENGINE *engine = NULL;
 647     int ret;
 648
 649     if (peerform == FORMAT_ENGINE)
 650         engine = e;
 651     peer = load_pubkey(file, peerform, 0, NULL, engine, "peer key");
 652     if (peer == NULL) {
 653         BIO_printf(bio_err, "Error reading peer key %s\n", file);
 654         ERR_print_errors(bio_err);
 655         return 0;
 656     }
 657
 658     ret = EVP_PKEY_derive_set_peer(ctx, peer);
 659
 660     EVP_PKEY_free(peer);
 661     if (ret <= 0)
 662         ERR_print_errors(bio_err);
 663     return ret;
 664 }
 665
 666 static int do_keyop(EVP_PKEY_CTX *ctx, int pkey_op,
 667                     unsigned char *out, size_t *poutlen,
 668                     const unsigned char *in, size_t inlen)
 669 {
 670     int rv = 0;
 671     switch (pkey_op) {
 672     case EVP_PKEY_OP_VERIFYRECOVER:
 673         rv = EVP_PKEY_verify_recover(ctx, out, poutlen, in, inlen);
 674         break;
 675
 676     case EVP_PKEY_OP_SIGN:
 677         rv = EVP_PKEY_sign(ctx, out, poutlen, in, inlen);
 678         break;
 679
 680     case EVP_PKEY_OP_ENCRYPT:
 681         rv = EVP_PKEY_encrypt(ctx, out, poutlen, in, inlen);
 682         break;
 683
 684     case EVP_PKEY_OP_DECRYPT:
 685         rv = EVP_PKEY_decrypt(ctx, out, poutlen, in, inlen);
 686         break;
 687
 688     case EVP_PKEY_OP_DERIVE:
 689         rv = EVP_PKEY_derive(ctx, out, poutlen);
 690         break;
 691
 692     }
 693     return rv;
 694 }
 695
 696 #define TBUF_MAXSIZE 2048
 697
 698 static int do_raw_keyop(int pkey_op, EVP_PKEY_CTX *ctx,
 699                         const EVP_MD *md, EVP_PKEY *pkey, BIO *in,
 700                         int filesize, unsigned char *sig, int siglen,
 701                         unsigned char **out, size_t *poutlen)
 702 {
 703     int rv = 0;
 704     EVP_MD_CTX *mctx = NULL;
 705     unsigned char tbuf[TBUF_MAXSIZE];
 706     unsigned char *mbuf = NULL;
 707     int buf_len = 0;
 708
 709     if ((mctx = EVP_MD_CTX_new()) == NULL) {
 710         BIO_printf(bio_err, "Error: out of memory\n");
 711         return rv;
 712     }
 713     EVP_MD_CTX_set_pkey_ctx(mctx, ctx);
 714
 715     /* Some algorithms only support oneshot digests */
 716     if (EVP_PKEY_id(pkey) == EVP_PKEY_ED25519
 717             || EVP_PKEY_id(pkey) == EVP_PKEY_ED448) {
 718         if (filesize < 0) {
 719             BIO_printf(bio_err,
 720                        "Error: unable to determine file size for oneshot operation\n");
 721             goto end;
 722         }
 723         mbuf = app_malloc(filesize, "oneshot sign/verify buffer");
 724         switch(pkey_op) {
 725         case EVP_PKEY_OP_VERIFY:
 726             if (EVP_DigestVerifyInit(mctx, NULL, md, NULL, pkey) != 1)
 727                 goto end;
 728             buf_len = BIO_read(in, mbuf, filesize);
 729             if (buf_len != filesize) {
 730                 BIO_printf(bio_err, "Error reading raw input data\n");
 731                 goto end;
 732             }
 733             rv = EVP_DigestVerify(mctx, sig, (size_t)siglen, mbuf, buf_len);
 734             break;
 735         case EVP_PKEY_OP_SIGN:
 736             if (EVP_DigestSignInit(mctx, NULL, md, NULL, pkey) != 1)
 737                 goto end;
 738             buf_len = BIO_read(in, mbuf, filesize);
 739             if (buf_len != filesize) {
 740                 BIO_printf(bio_err, "Error reading raw input data\n");
 741                 goto end;
 742             }
 743             rv = EVP_DigestSign(mctx, NULL, poutlen, mbuf, buf_len);
 744             if (rv == 1 && out != NULL) {
 745                 *out = app_malloc(*poutlen, "buffer output");
 746                 rv = EVP_DigestSign(mctx, *out, poutlen, mbuf, buf_len);
 747             }
 748             break;
 749         }
 750         goto end;
 751     }
 752
 753     switch(pkey_op) {
 754     case EVP_PKEY_OP_VERIFY:
 755         if (EVP_DigestVerifyInit(mctx, NULL, md, NULL, pkey) != 1)
 756             goto end;
 757         for (;;) {
 758             buf_len = BIO_read(in, tbuf, TBUF_MAXSIZE);
 759             if (buf_len == 0)
 760                 break;
 761             if (buf_len < 0) {
 762                 BIO_printf(bio_err, "Error reading raw input data\n");
 763                 goto end;
 764             }
 765             rv = EVP_DigestVerifyUpdate(mctx, tbuf, (size_t)buf_len);
 766             if (rv != 1) {
 767                 BIO_printf(bio_err, "Error verifying raw input data\n");
 768                 goto end;
 769             }
 770         }
 771         rv = EVP_DigestVerifyFinal(mctx, sig, (size_t)siglen);
 772         break;
 773     case EVP_PKEY_OP_SIGN:
 774         if (EVP_DigestSignInit(mctx, NULL, md, NULL, pkey) != 1)
 775             goto end;
 776         for (;;) {
 777             buf_len = BIO_read(in, tbuf, TBUF_MAXSIZE);
 778             if (buf_len == 0)
 779                 break;
 780             if (buf_len < 0) {
 781                 BIO_printf(bio_err, "Error reading raw input data\n");
 782                 goto end;
 783             }
 784             rv = EVP_DigestSignUpdate(mctx, tbuf, (size_t)buf_len);
 785             if (rv != 1) {
 786                 BIO_printf(bio_err, "Error signing raw input data\n");
 787                 goto end;
 788             }
 789         }
 790         rv = EVP_DigestSignFinal(mctx, NULL, poutlen);
 791         if (rv == 1 && out != NULL) {
 792             *out = app_malloc(*poutlen, "buffer output");
 793             rv = EVP_DigestSignFinal(mctx, *out, poutlen);
 794         }
 795         break;
 796     }
 797
 798  end:
 799     OPENSSL_free(mbuf);
 800     EVP_MD_CTX_free(mctx);
 801     return rv;
 802 }