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_COMMON,
  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;
 115     int keyform = FORMAT_UNDEF, peerform = FORMAT_UNDEF;
 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, *digestname = 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     EVP_MD_CTX *mctx = NULL;
 128     EVP_MD *md = NULL;
 129     int filesize = -1;
 130     OSSL_LIB_CTX *libctx = app_get0_libctx();
 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             digestname = opt_arg();
 251             break;
 252         }
 253     }
 254
 255     /* No extra arguments. */
 256     if (!opt_check_rest_arg(NULL))
 257         goto opthelp;
 258
 259     if (!app_RAND_load())
 260         goto end;
 261
 262     if (rawin && pkey_op != EVP_PKEY_OP_SIGN && pkey_op != EVP_PKEY_OP_VERIFY) {
 263         BIO_printf(bio_err,
 264                    "%s: -rawin can only be used with -sign or -verify\n",
 265                    prog);
 266         goto opthelp;
 267     }
 268
 269     if (digestname != NULL && !rawin) {
 270         BIO_printf(bio_err,
 271                    "%s: -digest can only be used with -rawin\n",
 272                    prog);
 273         goto opthelp;
 274     }
 275
 276     if (rawin && rev) {
 277         BIO_printf(bio_err, "%s: -rev cannot be used with raw input\n",
 278                    prog);
 279         goto opthelp;
 280     }
 281
 282     if (kdfalg != NULL) {
 283         if (kdflen == 0) {
 284             BIO_printf(bio_err,
 285                        "%s: no KDF length given (-kdflen parameter).\n", prog);
 286             goto opthelp;
 287         }
 288     } else if (inkey == NULL) {
 289         BIO_printf(bio_err,
 290                    "%s: no private key given (-inkey parameter).\n", prog);
 291         goto opthelp;
 292     } else if (peerkey != NULL && pkey_op != EVP_PKEY_OP_DERIVE) {
 293         BIO_printf(bio_err,
 294                    "%s: no peer key given (-peerkey parameter).\n", prog);
 295         goto opthelp;
 296     }
 297
 298     if (rawin) {
 299         if ((mctx = EVP_MD_CTX_new()) == NULL) {
 300             BIO_printf(bio_err, "Error: out of memory\n");
 301             goto end;
 302         }
 303     }
 304     ctx = init_ctx(kdfalg, &keysize, inkey, keyform, key_type,
 305                    passinarg, pkey_op, e, engine_impl, rawin, &pkey,
 306                    mctx, digestname, libctx, app_get0_propq());
 307     if (ctx == NULL) {
 308         BIO_printf(bio_err, "%s: Error initializing context\n", prog);
 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         goto end;
 314     }
 315     if (pkeyopts != NULL) {
 316         int num = sk_OPENSSL_STRING_num(pkeyopts);
 317         int i;
 318
 319         for (i = 0; i < num; ++i) {
 320             const char *opt = sk_OPENSSL_STRING_value(pkeyopts, i);
 321
 322             if (pkey_ctrl_string(ctx, opt) <= 0) {
 323                 BIO_printf(bio_err, "%s: Can't set parameter \"%s\":\n",
 324                            prog, opt);
 325                 goto end;
 326             }
 327         }
 328     }
 329     if (pkeyopts_passin != NULL) {
 330         int num = sk_OPENSSL_STRING_num(pkeyopts_passin);
 331         int i;
 332
 333         for (i = 0; i < num; i++) {
 334             char *opt = sk_OPENSSL_STRING_value(pkeyopts_passin, i);
 335             char *passin = strchr(opt, ':');
 336             char *passwd;
 337
 338             if (passin == NULL) {
 339                 /* Get password interactively */
 340                 char passwd_buf[4096];
 341                 int r;
 342
 343                 BIO_snprintf(passwd_buf, sizeof(passwd_buf), "Enter %s: ", opt);
 344                 r = EVP_read_pw_string(passwd_buf, sizeof(passwd_buf) - 1,
 345                                        passwd_buf, 0);
 346                 if (r < 0) {
 347                     if (r == -2)
 348                         BIO_puts(bio_err, "user abort\n");
 349                     else
 350                         BIO_puts(bio_err, "entry failed\n");
 351                     goto end;
 352                 }
 353                 passwd = OPENSSL_strdup(passwd_buf);
 354                 if (passwd == NULL) {
 355                     BIO_puts(bio_err, "out of memory\n");
 356                     goto end;
 357                 }
 358             } else {
 359                 /* Get password as a passin argument: First split option name
 360                  * and passphrase argument into two strings */
 361                 *passin = 0;
 362                 passin++;
 363                 if (app_passwd(passin, NULL, &passwd, NULL) == 0) {
 364                     BIO_printf(bio_err, "failed to get '%s'\n", opt);
 365                     goto end;
 366                 }
 367             }
 368
 369             if (EVP_PKEY_CTX_ctrl_str(ctx, opt, passwd) <= 0) {
 370                 BIO_printf(bio_err, "%s: Can't set parameter \"%s\":\n",
 371                            prog, opt);
 372                 goto end;
 373             }
 374             OPENSSL_free(passwd);
 375         }
 376     }
 377
 378     if (sigfile != NULL && (pkey_op != EVP_PKEY_OP_VERIFY)) {
 379         BIO_printf(bio_err,
 380                    "%s: Signature file specified for non verify\n", prog);
 381         goto end;
 382     }
 383
 384     if (sigfile == NULL && (pkey_op == EVP_PKEY_OP_VERIFY)) {
 385         BIO_printf(bio_err,
 386                    "%s: No signature file specified for verify\n", prog);
 387         goto end;
 388     }
 389
 390     if (pkey_op != EVP_PKEY_OP_DERIVE) {
 391         in = bio_open_default(infile, 'r', FORMAT_BINARY);
 392         if (infile != NULL) {
 393             struct stat st;
 394
 395             if (stat(infile, &st) == 0 && st.st_size <= INT_MAX)
 396                 filesize = (int)st.st_size;
 397         }
 398         if (in == NULL)
 399             goto end;
 400     }
 401     out = bio_open_default(outfile, 'w', FORMAT_BINARY);
 402     if (out == NULL)
 403         goto end;
 404
 405     if (sigfile != NULL) {
 406         BIO *sigbio = BIO_new_file(sigfile, "rb");
 407
 408         if (sigbio == NULL) {
 409             BIO_printf(bio_err, "Can't open signature file %s\n", sigfile);
 410             goto end;
 411         }
 412         siglen = bio_to_mem(&sig, keysize * 10, sigbio);
 413         BIO_free(sigbio);
 414         if (siglen < 0) {
 415             BIO_printf(bio_err, "Error reading signature data\n");
 416             goto end;
 417         }
 418     }
 419
 420     /* Raw input data is handled elsewhere */
 421     if (in != NULL && !rawin) {
 422         /* Read the input data */
 423         buf_inlen = bio_to_mem(&buf_in, keysize * 10, in);
 424         if (buf_inlen < 0) {
 425             BIO_printf(bio_err, "Error reading input Data\n");
 426             goto end;
 427         }
 428         if (rev) {
 429             size_t i;
 430             unsigned char ctmp;
 431             size_t l = (size_t)buf_inlen;
 432             for (i = 0; i < l / 2; i++) {
 433                 ctmp = buf_in[i];
 434                 buf_in[i] = buf_in[l - 1 - i];
 435                 buf_in[l - 1 - i] = ctmp;
 436             }
 437         }
 438     }
 439
 440     /* Sanity check the input if the input is not raw */
 441     if (!rawin
 442             && buf_inlen > EVP_MAX_MD_SIZE
 443             && (pkey_op == EVP_PKEY_OP_SIGN
 444                 || pkey_op == EVP_PKEY_OP_VERIFY)) {
 445         BIO_printf(bio_err,
 446                    "Error: The input data looks too long to be a hash\n");
 447         goto end;
 448     }
 449
 450     if (pkey_op == EVP_PKEY_OP_VERIFY) {
 451         if (rawin) {
 452             rv = do_raw_keyop(pkey_op, mctx, pkey, in, filesize, sig, siglen,
 453                               NULL, 0);
 454         } else {
 455             rv = EVP_PKEY_verify(ctx, sig, (size_t)siglen,
 456                                  buf_in, (size_t)buf_inlen);
 457         }
 458         if (rv == 1) {
 459             BIO_puts(out, "Signature Verified Successfully\n");
 460             ret = 0;
 461         } else {
 462             BIO_puts(out, "Signature Verification Failure\n");
 463         }
 464         goto end;
 465     }
 466     if (rawin) {
 467         /* rawin allocates the buffer in do_raw_keyop() */
 468         rv = do_raw_keyop(pkey_op, mctx, pkey, in, filesize, NULL, 0,
 469                           &buf_out, (size_t *)&buf_outlen);
 470     } else {
 471         if (kdflen != 0) {
 472             buf_outlen = kdflen;
 473             rv = 1;
 474         } else {
 475             rv = do_keyop(ctx, pkey_op, NULL, (size_t *)&buf_outlen,
 476                           buf_in, (size_t)buf_inlen);
 477         }
 478         if (rv > 0 && buf_outlen != 0) {
 479             buf_out = app_malloc(buf_outlen, "buffer output");
 480             rv = do_keyop(ctx, pkey_op,
 481                           buf_out, (size_t *)&buf_outlen,
 482                           buf_in, (size_t)buf_inlen);
 483         }
 484     }
 485     if (rv <= 0) {
 486         if (pkey_op != EVP_PKEY_OP_DERIVE) {
 487             BIO_puts(bio_err, "Public Key operation error\n");
 488         } else {
 489             BIO_puts(bio_err, "Key derivation failed\n");
 490         }
 491         goto end;
 492     }
 493     ret = 0;
 494
 495     if (asn1parse) {
 496         if (!ASN1_parse_dump(out, buf_out, buf_outlen, 1, -1))
 497             ERR_print_errors(bio_err); /* but still return success */
 498     } else if (hexdump) {
 499         BIO_dump(out, (char *)buf_out, buf_outlen);
 500     } else {
 501         BIO_write(out, buf_out, buf_outlen);
 502     }
 503
 504  end:
 505     if (ret != 0)
 506         ERR_print_errors(bio_err);
 507     EVP_MD_CTX_free(mctx);
 508     EVP_PKEY_CTX_free(ctx);
 509     EVP_MD_free(md);
 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, keyform, "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_get_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         return 0;
 672     }
 673
 674     ret = EVP_PKEY_derive_set_peer(ctx, peer) > 0;
 675
 676     EVP_PKEY_free(peer);
 677     return ret;
 678 }
 679
 680 static int do_keyop(EVP_PKEY_CTX *ctx, int pkey_op,
 681                     unsigned char *out, size_t *poutlen,
 682                     const unsigned char *in, size_t inlen)
 683 {
 684     int rv = 0;
 685     switch (pkey_op) {
 686     case EVP_PKEY_OP_VERIFYRECOVER:
 687         rv = EVP_PKEY_verify_recover(ctx, out, poutlen, in, inlen);
 688         break;
 689
 690     case EVP_PKEY_OP_SIGN:
 691         rv = EVP_PKEY_sign(ctx, out, poutlen, in, inlen);
 692         break;
 693
 694     case EVP_PKEY_OP_ENCRYPT:
 695         rv = EVP_PKEY_encrypt(ctx, out, poutlen, in, inlen);
 696         break;
 697
 698     case EVP_PKEY_OP_DECRYPT:
 699         rv = EVP_PKEY_decrypt(ctx, out, poutlen, in, inlen);
 700         break;
 701
 702     case EVP_PKEY_OP_DERIVE:
 703         rv = EVP_PKEY_derive(ctx, out, poutlen);
 704         break;
 705
 706     }
 707     return rv;
 708 }
 709
 710 #define TBUF_MAXSIZE 2048
 711
 712 static int do_raw_keyop(int pkey_op, EVP_MD_CTX *mctx,
 713                         EVP_PKEY *pkey, BIO *in,
 714                         int filesize, unsigned char *sig, int siglen,
 715                         unsigned char **out, size_t *poutlen)
 716 {
 717     int rv = 0;
 718     unsigned char tbuf[TBUF_MAXSIZE];
 719     unsigned char *mbuf = NULL;
 720     int buf_len = 0;
 721
 722     /* Some algorithms only support oneshot digests */
 723     if (EVP_PKEY_get_id(pkey) == EVP_PKEY_ED25519
 724             || EVP_PKEY_get_id(pkey) == EVP_PKEY_ED448) {
 725         if (filesize < 0) {
 726             BIO_printf(bio_err,
 727                        "Error: unable to determine file size for oneshot operation\n");
 728             goto end;
 729         }
 730         mbuf = app_malloc(filesize, "oneshot sign/verify buffer");
 731         switch (pkey_op) {
 732         case EVP_PKEY_OP_VERIFY:
 733             buf_len = BIO_read(in, mbuf, filesize);
 734             if (buf_len != filesize) {
 735                 BIO_printf(bio_err, "Error reading raw input data\n");
 736                 goto end;
 737             }
 738             rv = EVP_DigestVerify(mctx, sig, (size_t)siglen, mbuf, buf_len);
 739             break;
 740         case EVP_PKEY_OP_SIGN:
 741             buf_len = BIO_read(in, mbuf, filesize);
 742             if (buf_len != filesize) {
 743                 BIO_printf(bio_err, "Error reading raw input data\n");
 744                 goto end;
 745             }
 746             rv = EVP_DigestSign(mctx, NULL, poutlen, mbuf, buf_len);
 747             if (rv == 1 && out != NULL) {
 748                 *out = app_malloc(*poutlen, "buffer output");
 749                 rv = EVP_DigestSign(mctx, *out, poutlen, mbuf, buf_len);
 750             }
 751             break;
 752         }
 753         goto end;
 754     }
 755
 756     switch (pkey_op) {
 757     case EVP_PKEY_OP_VERIFY:
 758         for (;;) {
 759             buf_len = BIO_read(in, tbuf, TBUF_MAXSIZE);
 760             if (buf_len == 0)
 761                 break;
 762             if (buf_len < 0) {
 763                 BIO_printf(bio_err, "Error reading raw input data\n");
 764                 goto end;
 765             }
 766             rv = EVP_DigestVerifyUpdate(mctx, tbuf, (size_t)buf_len);
 767             if (rv != 1) {
 768                 BIO_printf(bio_err, "Error verifying raw input data\n");
 769                 goto end;
 770             }
 771         }
 772         rv = EVP_DigestVerifyFinal(mctx, sig, (size_t)siglen);
 773         break;
 774     case EVP_PKEY_OP_SIGN:
 775         for (;;) {
 776             buf_len = BIO_read(in, tbuf, TBUF_MAXSIZE);
 777             if (buf_len == 0)
 778                 break;
 779             if (buf_len < 0) {
 780                 BIO_printf(bio_err, "Error reading raw input data\n");
 781                 goto end;
 782             }
 783             rv = EVP_DigestSignUpdate(mctx, tbuf, (size_t)buf_len);
 784             if (rv != 1) {
 785                 BIO_printf(bio_err, "Error signing raw input data\n");
 786                 goto end;
 787             }
 788         }
 789         rv = EVP_DigestSignFinal(mctx, NULL, poutlen);
 790         if (rv == 1 && out != NULL) {
 791             *out = app_malloc(*poutlen, "buffer output");
 792             rv = EVP_DigestSignFinal(mctx, *out, poutlen);
 793         }
 794         break;
 795     }
 796
 797  end:
 798     OPENSSL_free(mbuf);
 799     return rv;
 800 }