apps/pkeyutl.c

   1 /*
   2  * Copyright 2006-2021 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                               EVP_MD_CTX *mctx, const char *digestname,
  28                               OSSL_LIB_CTX *libctx, const char *propq);
  29
  30 static int setup_peer(EVP_PKEY_CTX *ctx, int peerform, const char *file,
  31                       ENGINE *e);
  32
  33 static int do_keyop(EVP_PKEY_CTX *ctx, int pkey_op,
  34                     unsigned char *out, size_t *poutlen,
  35                     const unsigned char *in, size_t inlen);
  36
  37 static int do_raw_keyop(int pkey_op, EVP_MD_CTX *mctx,
  38                         EVP_PKEY *pkey, BIO *in,
  39                         int filesize, unsigned char *sig, int siglen,
  40                         unsigned char **out, size_t *poutlen);
  41
  42 typedef enum OPTION_choice {
  43     OPT_ERR = -1, OPT_EOF = 0, OPT_HELP,
  44     OPT_ENGINE, OPT_ENGINE_IMPL, OPT_IN, OPT_OUT,
  45     OPT_PUBIN, OPT_CERTIN, OPT_ASN1PARSE, OPT_HEXDUMP, OPT_SIGN,
  46     OPT_VERIFY, OPT_VERIFYRECOVER, OPT_REV, OPT_ENCRYPT, OPT_DECRYPT,
  47     OPT_DERIVE, OPT_SIGFILE, OPT_INKEY, OPT_PEERKEY, OPT_PASSIN,
  48     OPT_PEERFORM, OPT_KEYFORM, OPT_PKEYOPT, OPT_PKEYOPT_PASSIN, OPT_KDF,
  49     OPT_KDFLEN, OPT_R_ENUM, OPT_PROV_ENUM,
  50     OPT_CONFIG,
  51     OPT_RAWIN, OPT_DIGEST
  52 } OPTION_CHOICE;
  53
  54 const OPTIONS pkeyutl_options[] = {
  55     OPT_SECTION("General"),
  56     {"help", OPT_HELP, '-', "Display this summary"},
  57 #ifndef OPENSSL_NO_ENGINE
  58     {"engine", OPT_ENGINE, 's', "Use engine, possibly a hardware device"},
  59     {"engine_impl", OPT_ENGINE_IMPL, '-',
  60      "Also use engine given by -engine for crypto operations"},
  61 #endif
  62     {"sign", OPT_SIGN, '-', "Sign input data with private key"},
  63     {"verify", OPT_VERIFY, '-', "Verify with public key"},
  64     {"encrypt", OPT_ENCRYPT, '-', "Encrypt input data with public key"},
  65     {"decrypt", OPT_DECRYPT, '-', "Decrypt input data with private key"},
  66     {"derive", OPT_DERIVE, '-', "Derive shared secret"},
  67     OPT_CONFIG_OPTION,
  68
  69     OPT_SECTION("Input"),
  70     {"in", OPT_IN, '<', "Input file - default stdin"},
  71     {"rawin", OPT_RAWIN, '-', "Indicate the input data is in raw form"},
  72     {"pubin", OPT_PUBIN, '-', "Input is a public key"},
  73     {"inkey", OPT_INKEY, 's', "Input private key file"},
  74     {"passin", OPT_PASSIN, 's', "Input file pass phrase source"},
  75     {"peerkey", OPT_PEERKEY, 's', "Peer key file used in key derivation"},
  76     {"peerform", OPT_PEERFORM, 'E', "Peer key format (DER/PEM/P12/ENGINE)"},
  77     {"certin", OPT_CERTIN, '-', "Input is a cert with a public key"},
  78     {"rev", OPT_REV, '-', "Reverse the order of the input buffer"},
  79     {"sigfile", OPT_SIGFILE, '<', "Signature file (verify operation only)"},
  80     {"keyform", OPT_KEYFORM, 'E', "Private key format (ENGINE, other values ignored)"},
  81
  82     OPT_SECTION("Output"),
  83     {"out", OPT_OUT, '>', "Output file - default stdout"},
  84     {"asn1parse", OPT_ASN1PARSE, '-', "asn1parse the output data"},
  85     {"hexdump", OPT_HEXDUMP, '-', "Hex dump output"},
  86     {"verifyrecover", OPT_VERIFYRECOVER, '-',
  87      "Verify with public key, recover original data"},
  88
  89     OPT_SECTION("Signing/Derivation"),
  90     {"digest", OPT_DIGEST, 's',
  91      "Specify the digest algorithm when signing the raw input data"},
  92     {"pkeyopt", OPT_PKEYOPT, 's', "Public key options as opt:value"},
  93     {"pkeyopt_passin", OPT_PKEYOPT_PASSIN, 's',
  94      "Public key option that is read as a passphrase argument opt:passphrase"},
  95     {"kdf", OPT_KDF, 's', "Use KDF algorithm"},
  96     {"kdflen", OPT_KDFLEN, 'p', "KDF algorithm output length"},
  97
  98     OPT_R_OPTIONS,
  99     OPT_PROV_OPTIONS,
 100     {NULL}
 101 };
 102
 103 int pkeyutl_main(int argc, char **argv)
 104 {
 105     CONF *conf = NULL;
 106     BIO *in = NULL, *out = NULL;
 107     ENGINE *e = NULL;
 108     EVP_PKEY_CTX *ctx = NULL;
 109     EVP_PKEY *pkey = NULL;
 110     char *infile = NULL, *outfile = NULL, *sigfile = NULL, *passinarg = NULL;
 111     char hexdump = 0, asn1parse = 0, rev = 0, *prog;
 112     unsigned char *buf_in = NULL, *buf_out = NULL, *sig = NULL;
 113     OPTION_CHOICE o;
 114     int buf_inlen = 0, siglen = -1, keyform = FORMAT_PEM, peerform = FORMAT_PEM;
 115     int keysize = -1, pkey_op = EVP_PKEY_OP_SIGN, key_type = KEY_PRIVKEY;
 116     int engine_impl = 0;
 117     int ret = 1, rv = -1;
 118     size_t buf_outlen;
 119     const char *inkey = NULL;
 120     const char *peerkey = NULL;
 121     const char *kdfalg = NULL, *digestname = NULL;
 122     int kdflen = 0;
 123     STACK_OF(OPENSSL_STRING) *pkeyopts = NULL;
 124     STACK_OF(OPENSSL_STRING) *pkeyopts_passin = NULL;
 125     int rawin = 0;
 126     EVP_MD_CTX *mctx = NULL;
 127     int filesize = -1;
 128     OSSL_LIB_CTX *libctx = app_get0_libctx();
 129
 130     prog = opt_init(argc, argv, pkeyutl_options);
 131     while ((o = opt_next()) != OPT_EOF) {
 132         switch (o) {
 133         case OPT_EOF:
 134         case OPT_ERR:
 135  opthelp:
 136             BIO_printf(bio_err, "%s: Use -help for summary.\n", prog);
 137             goto end;
 138         case OPT_HELP:
 139             opt_help(pkeyutl_options);
 140             ret = 0;
 141             goto end;
 142         case OPT_IN:
 143             infile = opt_arg();
 144             break;
 145         case OPT_OUT:
 146             outfile = opt_arg();
 147             break;
 148         case OPT_SIGFILE:
 149             sigfile = opt_arg();
 150             break;
 151         case OPT_ENGINE_IMPL:
 152             engine_impl = 1;
 153             break;
 154         case OPT_INKEY:
 155             inkey = opt_arg();
 156             break;
 157         case OPT_PEERKEY:
 158             peerkey = opt_arg();
 159             break;
 160         case OPT_PASSIN:
 161             passinarg = opt_arg();
 162             break;
 163         case OPT_PEERFORM:
 164             if (!opt_format(opt_arg(), OPT_FMT_ANY, &peerform))
 165                 goto opthelp;
 166             break;
 167         case OPT_KEYFORM:
 168             if (!opt_format(opt_arg(), OPT_FMT_ANY, &keyform))
 169                 goto opthelp;
 170             break;
 171         case OPT_R_CASES:
 172             if (!opt_rand(o))
 173                 goto end;
 174             break;
 175         case OPT_CONFIG:
 176             conf = app_load_config_modules(opt_arg());
 177             if (conf == NULL)
 178                 goto end;
 179             break;
 180         case OPT_PROV_CASES:
 181             if (!opt_provider(o))
 182                 goto end;
 183             break;
 184         case OPT_ENGINE:
 185             e = setup_engine(opt_arg(), 0);
 186             break;
 187         case OPT_PUBIN:
 188             key_type = KEY_PUBKEY;
 189             break;
 190         case OPT_CERTIN:
 191             key_type = KEY_CERT;
 192             break;
 193         case OPT_ASN1PARSE:
 194             asn1parse = 1;
 195             break;
 196         case OPT_HEXDUMP:
 197             hexdump = 1;
 198             break;
 199         case OPT_SIGN:
 200             pkey_op = EVP_PKEY_OP_SIGN;
 201             break;
 202         case OPT_VERIFY:
 203             pkey_op = EVP_PKEY_OP_VERIFY;
 204             break;
 205         case OPT_VERIFYRECOVER:
 206             pkey_op = EVP_PKEY_OP_VERIFYRECOVER;
 207             break;
 208         case OPT_ENCRYPT:
 209             pkey_op = EVP_PKEY_OP_ENCRYPT;
 210             break;
 211         case OPT_DECRYPT:
 212             pkey_op = EVP_PKEY_OP_DECRYPT;
 213             break;
 214         case OPT_DERIVE:
 215             pkey_op = EVP_PKEY_OP_DERIVE;
 216             break;
 217         case OPT_KDF:
 218             pkey_op = EVP_PKEY_OP_DERIVE;
 219             key_type = KEY_NONE;
 220             kdfalg = opt_arg();
 221             break;
 222         case OPT_KDFLEN:
 223             kdflen = atoi(opt_arg());
 224             break;
 225         case OPT_REV:
 226             rev = 1;
 227             break;
 228         case OPT_PKEYOPT:
 229             if ((pkeyopts == NULL &&
 230                  (pkeyopts = sk_OPENSSL_STRING_new_null()) == NULL) ||
 231                 sk_OPENSSL_STRING_push(pkeyopts, opt_arg()) == 0) {
 232                 BIO_puts(bio_err, "out of memory\n");
 233                 goto end;
 234             }
 235             break;
 236         case OPT_PKEYOPT_PASSIN:
 237             if ((pkeyopts_passin == NULL &&
 238                  (pkeyopts_passin = sk_OPENSSL_STRING_new_null()) == NULL) ||
 239                 sk_OPENSSL_STRING_push(pkeyopts_passin, opt_arg()) == 0) {
 240                 BIO_puts(bio_err, "out of memory\n");
 241                 goto end;
 242             }
 243             break;
 244         case OPT_RAWIN:
 245             rawin = 1;
 246             break;
 247         case OPT_DIGEST:
 248             digestname = opt_arg();
 249             break;
 250         }
 251     }
 252
 253     /* No extra arguments. */
 254     argc = opt_num_rest();
 255     if (argc != 0)
 256         goto opthelp;
 257
 258     if (!app_RAND_load())
 259         goto end;
 260
 261     if (rawin && pkey_op != EVP_PKEY_OP_SIGN && pkey_op != EVP_PKEY_OP_VERIFY) {
 262         BIO_printf(bio_err,
 263                    "%s: -rawin can only be used with -sign or -verify\n",
 264                    prog);
 265         goto opthelp;
 266     }
 267
 268     if (digestname != NULL && !rawin) {
 269         BIO_printf(bio_err,
 270                    "%s: -digest can only be used with -rawin\n",
 271                    prog);
 272         goto opthelp;
 273     }
 274
 275     if (rawin && rev) {
 276         BIO_printf(bio_err, "%s: -rev cannot be used with raw input\n",
 277                    prog);
 278         goto opthelp;
 279     }
 280
 281     if (kdfalg != NULL) {
 282         if (kdflen == 0) {
 283             BIO_printf(bio_err,
 284                        "%s: no KDF length given (-kdflen parameter).\n", prog);
 285             goto opthelp;
 286         }
 287     } else if (inkey == NULL) {
 288         BIO_printf(bio_err,
 289                    "%s: no private key given (-inkey parameter).\n", prog);
 290         goto opthelp;
 291     } else if (peerkey != NULL && pkey_op != EVP_PKEY_OP_DERIVE) {
 292         BIO_printf(bio_err,
 293                    "%s: no peer key given (-peerkey parameter).\n", prog);
 294         goto opthelp;
 295     }
 296
 297     if (rawin) {
 298         if ((mctx = EVP_MD_CTX_new()) == NULL) {
 299             BIO_printf(bio_err, "Error: out of memory\n");
 300             goto end;
 301         }
 302     }
 303     ctx = init_ctx(kdfalg, &keysize, inkey, keyform, key_type,
 304                    passinarg, pkey_op, e, engine_impl, rawin, &pkey,
 305                    mctx, digestname, libctx, app_get0_propq());
 306     if (ctx == NULL) {
 307         BIO_printf(bio_err, "%s: Error initializing context\n", prog);
 308         ERR_print_errors(bio_err);
 309         goto end;
 310     }
 311     if (peerkey != NULL && !setup_peer(ctx, peerform, peerkey, e)) {
 312         BIO_printf(bio_err, "%s: Error setting up peer key\n", prog);
 313         ERR_print_errors(bio_err);
 314         goto end;
 315     }
 316     if (pkeyopts != NULL) {
 317         int num = sk_OPENSSL_STRING_num(pkeyopts);
 318         int i;
 319
 320         for (i = 0; i < num; ++i) {
 321             const char *opt = sk_OPENSSL_STRING_value(pkeyopts, i);
 322
 323             if (pkey_ctrl_string(ctx, opt) <= 0) {
 324                 BIO_printf(bio_err, "%s: Can't set parameter \"%s\":\n",
 325                            prog, opt);
 326                 ERR_print_errors(bio_err);
 327                 goto end;
 328             }
 329         }
 330     }
 331     if (pkeyopts_passin != NULL) {
 332         int num = sk_OPENSSL_STRING_num(pkeyopts_passin);
 333         int i;
 334
 335         for (i = 0; i < num; i++) {
 336             char *opt = sk_OPENSSL_STRING_value(pkeyopts_passin, i);
 337             char *passin = strchr(opt, ':');
 338             char *passwd;
 339
 340             if (passin == NULL) {
 341                 /* Get password interactively */
 342                 char passwd_buf[4096];
 343                 int r;
 344
 345                 BIO_snprintf(passwd_buf, sizeof(passwd_buf), "Enter %s: ", opt);
 346                 r = EVP_read_pw_string(passwd_buf, sizeof(passwd_buf) - 1,
 347                                        passwd_buf, 0);
 348                 if (r < 0) {
 349                     if (r == -2)
 350                         BIO_puts(bio_err, "user abort\n");
 351                     else
 352                         BIO_puts(bio_err, "entry failed\n");
 353                     goto end;
 354                 }
 355                 passwd = OPENSSL_strdup(passwd_buf);
 356                 if (passwd == NULL) {
 357                     BIO_puts(bio_err, "out of memory\n");
 358                     goto end;
 359                 }
 360             } else {
 361                 /* Get password as a passin argument: First split option name
 362                  * and passphrase argument into two strings */
 363                 *passin = 0;
 364                 passin++;
 365                 if (app_passwd(passin, NULL, &passwd, NULL) == 0) {
 366                     BIO_printf(bio_err, "failed to get '%s'\n", opt);
 367                     goto end;
 368                 }
 369             }
 370
 371             if (EVP_PKEY_CTX_ctrl_str(ctx, opt, passwd) <= 0) {
 372                 BIO_printf(bio_err, "%s: Can't set parameter \"%s\":\n",
 373                            prog, opt);
 374                 goto end;
 375             }
 376             OPENSSL_free(passwd);
 377         }
 378     }
 379
 380     if (sigfile != NULL && (pkey_op != EVP_PKEY_OP_VERIFY)) {
 381         BIO_printf(bio_err,
 382                    "%s: Signature file specified for non verify\n", prog);
 383         goto end;
 384     }
 385
 386     if (sigfile == NULL && (pkey_op == EVP_PKEY_OP_VERIFY)) {
 387         BIO_printf(bio_err,
 388                    "%s: No signature file specified for verify\n", prog);
 389         goto end;
 390     }
 391
 392     if (pkey_op != EVP_PKEY_OP_DERIVE) {
 393         in = bio_open_default(infile, 'r', FORMAT_BINARY);
 394         if (infile != NULL) {
 395             struct stat st;
 396
 397             if (stat(infile, &st) == 0 && st.st_size <= INT_MAX)
 398                 filesize = (int)st.st_size;
 399         }
 400         if (in == NULL)
 401             goto end;
 402     }
 403     out = bio_open_default(outfile, 'w', FORMAT_BINARY);
 404     if (out == NULL)
 405         goto end;
 406
 407     if (sigfile != NULL) {
 408         BIO *sigbio = BIO_new_file(sigfile, "rb");
 409
 410         if (sigbio == NULL) {
 411             BIO_printf(bio_err, "Can't open signature file %s\n", sigfile);
 412             goto end;
 413         }
 414         siglen = bio_to_mem(&sig, keysize * 10, sigbio);
 415         BIO_free(sigbio);
 416         if (siglen < 0) {
 417             BIO_printf(bio_err, "Error reading signature data\n");
 418             goto end;
 419         }
 420     }
 421
 422     /* Raw input data is handled elsewhere */
 423     if (in != NULL && !rawin) {
 424         /* Read the input data */
 425         buf_inlen = bio_to_mem(&buf_in, keysize * 10, in);
 426         if (buf_inlen < 0) {
 427             BIO_printf(bio_err, "Error reading input Data\n");
 428             goto end;
 429         }
 430         if (rev) {
 431             size_t i;
 432             unsigned char ctmp;
 433             size_t l = (size_t)buf_inlen;
 434             for (i = 0; i < l / 2; i++) {
 435                 ctmp = buf_in[i];
 436                 buf_in[i] = buf_in[l - 1 - i];
 437                 buf_in[l - 1 - i] = ctmp;
 438             }
 439         }
 440     }
 441
 442     /* Sanity check the input if the input is not raw */
 443     if (!rawin
 444             && buf_inlen > EVP_MAX_MD_SIZE
 445             && (pkey_op == EVP_PKEY_OP_SIGN
 446                 || pkey_op == EVP_PKEY_OP_VERIFY)) {
 447         BIO_printf(bio_err,
 448                    "Error: The input data looks too long to be a hash\n");
 449         goto end;
 450     }
 451
 452     if (pkey_op == EVP_PKEY_OP_VERIFY) {
 453         if (rawin) {
 454             rv = do_raw_keyop(pkey_op, mctx, pkey, in, filesize, sig, siglen,
 455                               NULL, 0);
 456         } else {
 457             rv = EVP_PKEY_verify(ctx, sig, (size_t)siglen,
 458                                  buf_in, (size_t)buf_inlen);
 459         }
 460         if (rv == 1) {
 461             BIO_puts(out, "Signature Verified Successfully\n");
 462             ret = 0;
 463         } else {
 464             BIO_puts(out, "Signature Verification Failure\n");
 465         }
 466         goto end;
 467     }
 468     if (kdflen != 0) {
 469         buf_outlen = kdflen;
 470         rv = 1;
 471     } else {
 472         if (rawin) {
 473             /* rawin allocates the buffer in do_raw_keyop() */
 474             rv = do_raw_keyop(pkey_op, mctx, pkey, in, filesize, NULL, 0,
 475                               &buf_out, (size_t *)&buf_outlen);
 476         } else {
 477             rv = do_keyop(ctx, pkey_op, NULL, (size_t *)&buf_outlen,
 478                           buf_in, (size_t)buf_inlen);
 479             if (rv > 0 && buf_outlen != 0) {
 480                 buf_out = app_malloc(buf_outlen, "buffer output");
 481                 rv = do_keyop(ctx, pkey_op,
 482                               buf_out, (size_t *)&buf_outlen,
 483                               buf_in, (size_t)buf_inlen);
 484             }
 485         }
 486     }
 487     if (rv <= 0) {
 488         if (pkey_op != EVP_PKEY_OP_DERIVE) {
 489             BIO_puts(bio_err, "Public Key operation error\n");
 490         } else {
 491             BIO_puts(bio_err, "Key derivation failed\n");
 492         }
 493         ERR_print_errors(bio_err);
 494         goto end;
 495     }
 496     ret = 0;
 497
 498     if (asn1parse) {
 499         if (!ASN1_parse_dump(out, buf_out, buf_outlen, 1, -1))
 500             ERR_print_errors(bio_err);
 501     } else if (hexdump) {
 502         BIO_dump(out, (char *)buf_out, buf_outlen);
 503     } else {
 504         BIO_write(out, buf_out, buf_outlen);
 505     }
 506
 507  end:
 508     EVP_MD_CTX_free(mctx);
 509     EVP_PKEY_CTX_free(ctx);
 510     release_engine(e);
 511     BIO_free(in);
 512     BIO_free_all(out);
 513     OPENSSL_free(buf_in);
 514     OPENSSL_free(buf_out);
 515     OPENSSL_free(sig);
 516     sk_OPENSSL_STRING_free(pkeyopts);
 517     sk_OPENSSL_STRING_free(pkeyopts_passin);
 518     NCONF_free(conf);
 519     return ret;
 520 }
 521
 522 static EVP_PKEY_CTX *init_ctx(const char *kdfalg, int *pkeysize,
 523                               const char *keyfile, int keyform, int key_type,
 524                               char *passinarg, int pkey_op, ENGINE *e,
 525                               const int engine_impl, int rawin,
 526                               EVP_PKEY **ppkey, EVP_MD_CTX *mctx, const char *digestname,
 527                               OSSL_LIB_CTX *libctx, const char *propq)
 528 {
 529     EVP_PKEY *pkey = NULL;
 530     EVP_PKEY_CTX *ctx = NULL;
 531     ENGINE *impl = NULL;
 532     char *passin = NULL;
 533     int rv = -1;
 534     X509 *x;
 535
 536     if (((pkey_op == EVP_PKEY_OP_SIGN) || (pkey_op == EVP_PKEY_OP_DECRYPT)
 537          || (pkey_op == EVP_PKEY_OP_DERIVE))
 538         && (key_type != KEY_PRIVKEY && kdfalg == NULL)) {
 539         BIO_printf(bio_err, "A private key is needed for this operation\n");
 540         goto end;
 541     }
 542     if (!app_passwd(passinarg, NULL, &passin, NULL)) {
 543         BIO_printf(bio_err, "Error getting password\n");
 544         goto end;
 545     }
 546     switch (key_type) {
 547     case KEY_PRIVKEY:
 548         pkey = load_key(keyfile, keyform, 0, passin, e, "private key");
 549         break;
 550
 551     case KEY_PUBKEY:
 552         pkey = load_pubkey(keyfile, keyform, 0, NULL, e, "public key");
 553         break;
 554
 555     case KEY_CERT:
 556         x = load_cert(keyfile, "Certificate");
 557         if (x) {
 558             pkey = X509_get_pubkey(x);
 559             X509_free(x);
 560         }
 561         break;
 562
 563     case KEY_NONE:
 564         break;
 565
 566     }
 567
 568 #ifndef OPENSSL_NO_ENGINE
 569     if (engine_impl)
 570         impl = e;
 571 #endif
 572
 573     if (kdfalg != NULL) {
 574         int kdfnid = OBJ_sn2nid(kdfalg);
 575
 576         if (kdfnid == NID_undef) {
 577             kdfnid = OBJ_ln2nid(kdfalg);
 578             if (kdfnid == NID_undef) {
 579                 BIO_printf(bio_err, "The given KDF \"%s\" is unknown.\n",
 580                            kdfalg);
 581                 goto end;
 582             }
 583         }
 584         if (impl != NULL)
 585             ctx = EVP_PKEY_CTX_new_id(kdfnid, impl);
 586         else
 587             ctx = EVP_PKEY_CTX_new_from_name(libctx, kdfalg, propq);
 588     } else {
 589         if (pkey == NULL)
 590             goto end;
 591
 592         *pkeysize = EVP_PKEY_size(pkey);
 593         if (impl != NULL)
 594             ctx = EVP_PKEY_CTX_new(pkey, impl);
 595         else
 596             ctx = EVP_PKEY_CTX_new_from_pkey(libctx, pkey, propq);
 597         if (ppkey != NULL)
 598             *ppkey = pkey;
 599         EVP_PKEY_free(pkey);
 600     }
 601
 602     if (ctx == NULL)
 603         goto end;
 604
 605     if (rawin) {
 606         EVP_MD_CTX_set_pkey_ctx(mctx, ctx);
 607
 608         switch (pkey_op) {
 609         case EVP_PKEY_OP_SIGN:
 610             rv = EVP_DigestSignInit_ex(mctx, NULL, digestname, libctx, propq,
 611                                        pkey, NULL);
 612             break;
 613
 614         case EVP_PKEY_OP_VERIFY:
 615             rv = EVP_DigestVerifyInit_ex(mctx, NULL, digestname, libctx, propq,
 616                                          pkey, NULL);
 617             break;
 618         }
 619
 620     } else {
 621         switch (pkey_op) {
 622         case EVP_PKEY_OP_SIGN:
 623             rv = EVP_PKEY_sign_init(ctx);
 624             break;
 625
 626         case EVP_PKEY_OP_VERIFY:
 627             rv = EVP_PKEY_verify_init(ctx);
 628             break;
 629
 630         case EVP_PKEY_OP_VERIFYRECOVER:
 631             rv = EVP_PKEY_verify_recover_init(ctx);
 632             break;
 633
 634         case EVP_PKEY_OP_ENCRYPT:
 635             rv = EVP_PKEY_encrypt_init(ctx);
 636             break;
 637
 638         case EVP_PKEY_OP_DECRYPT:
 639             rv = EVP_PKEY_decrypt_init(ctx);
 640             break;
 641
 642         case EVP_PKEY_OP_DERIVE:
 643             rv = EVP_PKEY_derive_init(ctx);
 644             break;
 645         }
 646     }
 647
 648     if (rv <= 0) {
 649         EVP_PKEY_CTX_free(ctx);
 650         ctx = NULL;
 651     }
 652
 653  end:
 654     OPENSSL_free(passin);
 655     return ctx;
 656
 657 }
 658
 659 static int setup_peer(EVP_PKEY_CTX *ctx, int peerform, const char *file,
 660                       ENGINE *e)
 661 {
 662     EVP_PKEY *peer = NULL;
 663     ENGINE *engine = NULL;
 664     int ret;
 665
 666     if (peerform == FORMAT_ENGINE)
 667         engine = e;
 668     peer = load_pubkey(file, peerform, 0, NULL, engine, "peer key");
 669     if (peer == NULL) {
 670         BIO_printf(bio_err, "Error reading peer key %s\n", file);
 671         ERR_print_errors(bio_err);
 672         return 0;
 673     }
 674
 675     ret = EVP_PKEY_derive_set_peer(ctx, peer);
 676
 677     EVP_PKEY_free(peer);
 678     if (ret <= 0)
 679         ERR_print_errors(bio_err);
 680     return ret;
 681 }
 682
 683 static int do_keyop(EVP_PKEY_CTX *ctx, int pkey_op,
 684                     unsigned char *out, size_t *poutlen,
 685                     const unsigned char *in, size_t inlen)
 686 {
 687     int rv = 0;
 688     switch (pkey_op) {
 689     case EVP_PKEY_OP_VERIFYRECOVER:
 690         rv = EVP_PKEY_verify_recover(ctx, out, poutlen, in, inlen);
 691         break;
 692
 693     case EVP_PKEY_OP_SIGN:
 694         rv = EVP_PKEY_sign(ctx, out, poutlen, in, inlen);
 695         break;
 696
 697     case EVP_PKEY_OP_ENCRYPT:
 698         rv = EVP_PKEY_encrypt(ctx, out, poutlen, in, inlen);
 699         break;
 700
 701     case EVP_PKEY_OP_DECRYPT:
 702         rv = EVP_PKEY_decrypt(ctx, out, poutlen, in, inlen);
 703         break;
 704
 705     case EVP_PKEY_OP_DERIVE:
 706         rv = EVP_PKEY_derive(ctx, out, poutlen);
 707         break;
 708
 709     }
 710     return rv;
 711 }
 712
 713 #define TBUF_MAXSIZE 2048
 714
 715 static int do_raw_keyop(int pkey_op, EVP_MD_CTX *mctx,
 716                         EVP_PKEY *pkey, BIO *in,
 717                         int filesize, unsigned char *sig, int siglen,
 718                         unsigned char **out, size_t *poutlen)
 719 {
 720     int rv = 0;
 721     unsigned char tbuf[TBUF_MAXSIZE];
 722     unsigned char *mbuf = NULL;
 723     int buf_len = 0;
 724
 725     /* Some algorithms only support oneshot digests */
 726     if (EVP_PKEY_id(pkey) == EVP_PKEY_ED25519
 727             || EVP_PKEY_id(pkey) == EVP_PKEY_ED448) {
 728         if (filesize < 0) {
 729             BIO_printf(bio_err,
 730                        "Error: unable to determine file size for oneshot operation\n");
 731             goto end;
 732         }
 733         mbuf = app_malloc(filesize, "oneshot sign/verify buffer");
 734         switch(pkey_op) {
 735         case EVP_PKEY_OP_VERIFY:
 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_DigestVerify(mctx, sig, (size_t)siglen, mbuf, buf_len);
 742             break;
 743         case EVP_PKEY_OP_SIGN:
 744             buf_len = BIO_read(in, mbuf, filesize);
 745             if (buf_len != filesize) {
 746                 BIO_printf(bio_err, "Error reading raw input data\n");
 747                 goto end;
 748             }
 749             rv = EVP_DigestSign(mctx, NULL, poutlen, mbuf, buf_len);
 750             if (rv == 1 && out != NULL) {
 751                 *out = app_malloc(*poutlen, "buffer output");
 752                 rv = EVP_DigestSign(mctx, *out, poutlen, mbuf, buf_len);
 753             }
 754             break;
 755         }
 756         goto end;
 757     }
 758
 759     switch(pkey_op) {
 760     case EVP_PKEY_OP_VERIFY:
 761         for (;;) {
 762             buf_len = BIO_read(in, tbuf, TBUF_MAXSIZE);
 763             if (buf_len == 0)
 764                 break;
 765             if (buf_len < 0) {
 766                 BIO_printf(bio_err, "Error reading raw input data\n");
 767                 goto end;
 768             }
 769             rv = EVP_DigestVerifyUpdate(mctx, tbuf, (size_t)buf_len);
 770             if (rv != 1) {
 771                 BIO_printf(bio_err, "Error verifying raw input data\n");
 772                 goto end;
 773             }
 774         }
 775         rv = EVP_DigestVerifyFinal(mctx, sig, (size_t)siglen);
 776         break;
 777     case EVP_PKEY_OP_SIGN:
 778         for (;;) {
 779             buf_len = BIO_read(in, tbuf, TBUF_MAXSIZE);
 780             if (buf_len == 0)
 781                 break;
 782             if (buf_len < 0) {
 783                 BIO_printf(bio_err, "Error reading raw input data\n");
 784                 goto end;
 785             }
 786             rv = EVP_DigestSignUpdate(mctx, tbuf, (size_t)buf_len);
 787             if (rv != 1) {
 788                 BIO_printf(bio_err, "Error signing raw input data\n");
 789                 goto end;
 790             }
 791         }
 792         rv = EVP_DigestSignFinal(mctx, NULL, poutlen);
 793         if (rv == 1 && out != NULL) {
 794             *out = app_malloc(*poutlen, "buffer output");
 795             rv = EVP_DigestSignFinal(mctx, *out, poutlen);
 796         }
 797         break;
 798     }
 799
 800  end:
 801     OPENSSL_free(mbuf);
 802     return rv;
 803 }