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     argc = opt_num_rest();
 257     if (argc != 0)
 258         goto opthelp;
 259
 260     if (!app_RAND_load())
 261         goto end;
 262
 263     if (rawin && pkey_op != EVP_PKEY_OP_SIGN && pkey_op != EVP_PKEY_OP_VERIFY) {
 264         BIO_printf(bio_err,
 265                    "%s: -rawin can only be used with -sign or -verify\n",
 266                    prog);
 267         goto opthelp;
 268     }
 269
 270     if (digestname != NULL && !rawin) {
 271         BIO_printf(bio_err,
 272                    "%s: -digest can only be used with -rawin\n",
 273                    prog);
 274         goto opthelp;
 275     }
 276
 277     if (rawin && rev) {
 278         BIO_printf(bio_err, "%s: -rev cannot be used with raw input\n",
 279                    prog);
 280         goto opthelp;
 281     }
 282
 283     if (kdfalg != NULL) {
 284         if (kdflen == 0) {
 285             BIO_printf(bio_err,
 286                        "%s: no KDF length given (-kdflen parameter).\n", prog);
 287             goto opthelp;
 288         }
 289     } else if (inkey == NULL) {
 290         BIO_printf(bio_err,
 291                    "%s: no private key given (-inkey parameter).\n", prog);
 292         goto opthelp;
 293     } else if (peerkey != NULL && pkey_op != EVP_PKEY_OP_DERIVE) {
 294         BIO_printf(bio_err,
 295                    "%s: no peer key given (-peerkey parameter).\n", prog);
 296         goto opthelp;
 297     }
 298
 299     if (rawin) {
 300         if ((mctx = EVP_MD_CTX_new()) == NULL) {
 301             BIO_printf(bio_err, "Error: out of memory\n");
 302             goto end;
 303         }
 304     }
 305     ctx = init_ctx(kdfalg, &keysize, inkey, keyform, key_type,
 306                    passinarg, pkey_op, e, engine_impl, rawin, &pkey,
 307                    mctx, digestname, libctx, app_get0_propq());
 308     if (ctx == NULL) {
 309         BIO_printf(bio_err, "%s: Error initializing context\n", prog);
 310         ERR_print_errors(bio_err);
 311         goto end;
 312     }
 313     if (peerkey != NULL && !setup_peer(ctx, peerform, peerkey, e)) {
 314         BIO_printf(bio_err, "%s: Error setting up peer key\n", prog);
 315         ERR_print_errors(bio_err);
 316         goto end;
 317     }
 318     if (pkeyopts != NULL) {
 319         int num = sk_OPENSSL_STRING_num(pkeyopts);
 320         int i;
 321
 322         for (i = 0; i < num; ++i) {
 323             const char *opt = sk_OPENSSL_STRING_value(pkeyopts, i);
 324
 325             if (pkey_ctrl_string(ctx, opt) <= 0) {
 326                 BIO_printf(bio_err, "%s: Can't set parameter \"%s\":\n",
 327                            prog, opt);
 328                 ERR_print_errors(bio_err);
 329                 goto end;
 330             }
 331         }
 332     }
 333     if (pkeyopts_passin != NULL) {
 334         int num = sk_OPENSSL_STRING_num(pkeyopts_passin);
 335         int i;
 336
 337         for (i = 0; i < num; i++) {
 338             char *opt = sk_OPENSSL_STRING_value(pkeyopts_passin, i);
 339             char *passin = strchr(opt, ':');
 340             char *passwd;
 341
 342             if (passin == NULL) {
 343                 /* Get password interactively */
 344                 char passwd_buf[4096];
 345                 int r;
 346
 347                 BIO_snprintf(passwd_buf, sizeof(passwd_buf), "Enter %s: ", opt);
 348                 r = EVP_read_pw_string(passwd_buf, sizeof(passwd_buf) - 1,
 349                                        passwd_buf, 0);
 350                 if (r < 0) {
 351                     if (r == -2)
 352                         BIO_puts(bio_err, "user abort\n");
 353                     else
 354                         BIO_puts(bio_err, "entry failed\n");
 355                     goto end;
 356                 }
 357                 passwd = OPENSSL_strdup(passwd_buf);
 358                 if (passwd == NULL) {
 359                     BIO_puts(bio_err, "out of memory\n");
 360                     goto end;
 361                 }
 362             } else {
 363                 /* Get password as a passin argument: First split option name
 364                  * and passphrase argument into two strings */
 365                 *passin = 0;
 366                 passin++;
 367                 if (app_passwd(passin, NULL, &passwd, NULL) == 0) {
 368                     BIO_printf(bio_err, "failed to get '%s'\n", opt);
 369                     goto end;
 370                 }
 371             }
 372
 373             if (EVP_PKEY_CTX_ctrl_str(ctx, opt, passwd) <= 0) {
 374                 BIO_printf(bio_err, "%s: Can't set parameter \"%s\":\n",
 375                            prog, opt);
 376                 goto end;
 377             }
 378             OPENSSL_free(passwd);
 379         }
 380     }
 381
 382     if (sigfile != NULL && (pkey_op != EVP_PKEY_OP_VERIFY)) {
 383         BIO_printf(bio_err,
 384                    "%s: Signature file specified for non verify\n", prog);
 385         goto end;
 386     }
 387
 388     if (sigfile == NULL && (pkey_op == EVP_PKEY_OP_VERIFY)) {
 389         BIO_printf(bio_err,
 390                    "%s: No signature file specified for verify\n", prog);
 391         goto end;
 392     }
 393
 394     if (pkey_op != EVP_PKEY_OP_DERIVE) {
 395         in = bio_open_default(infile, 'r', FORMAT_BINARY);
 396         if (infile != NULL) {
 397             struct stat st;
 398
 399             if (stat(infile, &st) == 0 && st.st_size <= INT_MAX)
 400                 filesize = (int)st.st_size;
 401         }
 402         if (in == NULL)
 403             goto end;
 404     }
 405     out = bio_open_default(outfile, 'w', FORMAT_BINARY);
 406     if (out == NULL)
 407         goto end;
 408
 409     if (sigfile != NULL) {
 410         BIO *sigbio = BIO_new_file(sigfile, "rb");
 411
 412         if (sigbio == NULL) {
 413             BIO_printf(bio_err, "Can't open signature file %s\n", sigfile);
 414             goto end;
 415         }
 416         siglen = bio_to_mem(&sig, keysize * 10, sigbio);
 417         BIO_free(sigbio);
 418         if (siglen < 0) {
 419             BIO_printf(bio_err, "Error reading signature data\n");
 420             goto end;
 421         }
 422     }
 423
 424     /* Raw input data is handled elsewhere */
 425     if (in != NULL && !rawin) {
 426         /* Read the input data */
 427         buf_inlen = bio_to_mem(&buf_in, keysize * 10, in);
 428         if (buf_inlen < 0) {
 429             BIO_printf(bio_err, "Error reading input Data\n");
 430             goto end;
 431         }
 432         if (rev) {
 433             size_t i;
 434             unsigned char ctmp;
 435             size_t l = (size_t)buf_inlen;
 436             for (i = 0; i < l / 2; i++) {
 437                 ctmp = buf_in[i];
 438                 buf_in[i] = buf_in[l - 1 - i];
 439                 buf_in[l - 1 - i] = ctmp;
 440             }
 441         }
 442     }
 443
 444     /* Sanity check the input if the input is not raw */
 445     if (!rawin
 446             && buf_inlen > EVP_MAX_MD_SIZE
 447             && (pkey_op == EVP_PKEY_OP_SIGN
 448                 || pkey_op == EVP_PKEY_OP_VERIFY)) {
 449         BIO_printf(bio_err,
 450                    "Error: The input data looks too long to be a hash\n");
 451         goto end;
 452     }
 453
 454     if (pkey_op == EVP_PKEY_OP_VERIFY) {
 455         if (rawin) {
 456             rv = do_raw_keyop(pkey_op, mctx, pkey, in, filesize, sig, siglen,
 457                               NULL, 0);
 458         } else {
 459             rv = EVP_PKEY_verify(ctx, sig, (size_t)siglen,
 460                                  buf_in, (size_t)buf_inlen);
 461         }
 462         if (rv == 1) {
 463             BIO_puts(out, "Signature Verified Successfully\n");
 464             ret = 0;
 465         } else {
 466             BIO_puts(out, "Signature Verification Failure\n");
 467         }
 468         goto end;
 469     }
 470     if (kdflen != 0) {
 471         buf_outlen = kdflen;
 472         rv = 1;
 473     } else {
 474         if (rawin) {
 475             /* rawin allocates the buffer in do_raw_keyop() */
 476             rv = do_raw_keyop(pkey_op, mctx, pkey, in, filesize, NULL, 0,
 477                               &buf_out, (size_t *)&buf_outlen);
 478         } else {
 479             rv = do_keyop(ctx, pkey_op, NULL, (size_t *)&buf_outlen,
 480                           buf_in, (size_t)buf_inlen);
 481             if (rv > 0 && buf_outlen != 0) {
 482                 buf_out = app_malloc(buf_outlen, "buffer output");
 483                 rv = do_keyop(ctx, pkey_op,
 484                               buf_out, (size_t *)&buf_outlen,
 485                               buf_in, (size_t)buf_inlen);
 486             }
 487         }
 488     }
 489     if (rv <= 0) {
 490         if (pkey_op != EVP_PKEY_OP_DERIVE) {
 491             BIO_puts(bio_err, "Public Key operation error\n");
 492         } else {
 493             BIO_puts(bio_err, "Key derivation failed\n");
 494         }
 495         ERR_print_errors(bio_err);
 496         goto end;
 497     }
 498     ret = 0;
 499
 500     if (asn1parse) {
 501         if (!ASN1_parse_dump(out, buf_out, buf_outlen, 1, -1))
 502             ERR_print_errors(bio_err);
 503     } else if (hexdump) {
 504         BIO_dump(out, (char *)buf_out, buf_outlen);
 505     } else {
 506         BIO_write(out, buf_out, buf_outlen);
 507     }
 508
 509  end:
 510     EVP_MD_CTX_free(mctx);
 511     EVP_PKEY_CTX_free(ctx);
 512     EVP_MD_free(md);
 513     release_engine(e);
 514     BIO_free(in);
 515     BIO_free_all(out);
 516     OPENSSL_free(buf_in);
 517     OPENSSL_free(buf_out);
 518     OPENSSL_free(sig);
 519     sk_OPENSSL_STRING_free(pkeyopts);
 520     sk_OPENSSL_STRING_free(pkeyopts_passin);
 521     NCONF_free(conf);
 522     return ret;
 523 }
 524
 525 static EVP_PKEY_CTX *init_ctx(const char *kdfalg, int *pkeysize,
 526                               const char *keyfile, int keyform, int key_type,
 527                               char *passinarg, int pkey_op, ENGINE *e,
 528                               const int engine_impl, int rawin,
 529                               EVP_PKEY **ppkey, EVP_MD_CTX *mctx, const char *digestname,
 530                               OSSL_LIB_CTX *libctx, const char *propq)
 531 {
 532     EVP_PKEY *pkey = NULL;
 533     EVP_PKEY_CTX *ctx = NULL;
 534     ENGINE *impl = NULL;
 535     char *passin = NULL;
 536     int rv = -1;
 537     X509 *x;
 538
 539     if (((pkey_op == EVP_PKEY_OP_SIGN) || (pkey_op == EVP_PKEY_OP_DECRYPT)
 540          || (pkey_op == EVP_PKEY_OP_DERIVE))
 541         && (key_type != KEY_PRIVKEY && kdfalg == NULL)) {
 542         BIO_printf(bio_err, "A private key is needed for this operation\n");
 543         goto end;
 544     }
 545     if (!app_passwd(passinarg, NULL, &passin, NULL)) {
 546         BIO_printf(bio_err, "Error getting password\n");
 547         goto end;
 548     }
 549     switch (key_type) {
 550     case KEY_PRIVKEY:
 551         pkey = load_key(keyfile, keyform, 0, passin, e, "private key");
 552         break;
 553
 554     case KEY_PUBKEY:
 555         pkey = load_pubkey(keyfile, keyform, 0, NULL, e, "public key");
 556         break;
 557
 558     case KEY_CERT:
 559         x = load_cert(keyfile, keyform, "Certificate");
 560         if (x) {
 561             pkey = X509_get_pubkey(x);
 562             X509_free(x);
 563         }
 564         break;
 565
 566     case KEY_NONE:
 567         break;
 568
 569     }
 570
 571 #ifndef OPENSSL_NO_ENGINE
 572     if (engine_impl)
 573         impl = e;
 574 #endif
 575
 576     if (kdfalg != NULL) {
 577         int kdfnid = OBJ_sn2nid(kdfalg);
 578
 579         if (kdfnid == NID_undef) {
 580             kdfnid = OBJ_ln2nid(kdfalg);
 581             if (kdfnid == NID_undef) {
 582                 BIO_printf(bio_err, "The given KDF \"%s\" is unknown.\n",
 583                            kdfalg);
 584                 goto end;
 585             }
 586         }
 587         if (impl != NULL)
 588             ctx = EVP_PKEY_CTX_new_id(kdfnid, impl);
 589         else
 590             ctx = EVP_PKEY_CTX_new_from_name(libctx, kdfalg, propq);
 591     } else {
 592         if (pkey == NULL)
 593             goto end;
 594
 595         *pkeysize = EVP_PKEY_get_size(pkey);
 596         if (impl != NULL)
 597             ctx = EVP_PKEY_CTX_new(pkey, impl);
 598         else
 599             ctx = EVP_PKEY_CTX_new_from_pkey(libctx, pkey, propq);
 600         if (ppkey != NULL)
 601             *ppkey = pkey;
 602         EVP_PKEY_free(pkey);
 603     }
 604
 605     if (ctx == NULL)
 606         goto end;
 607
 608     if (rawin) {
 609         EVP_MD_CTX_set_pkey_ctx(mctx, ctx);
 610
 611         switch (pkey_op) {
 612         case EVP_PKEY_OP_SIGN:
 613             rv = EVP_DigestSignInit_ex(mctx, NULL, digestname, libctx, propq,
 614                                        pkey, NULL);
 615             break;
 616
 617         case EVP_PKEY_OP_VERIFY:
 618             rv = EVP_DigestVerifyInit_ex(mctx, NULL, digestname, libctx, propq,
 619                                          pkey, NULL);
 620             break;
 621         }
 622
 623     } else {
 624         switch (pkey_op) {
 625         case EVP_PKEY_OP_SIGN:
 626             rv = EVP_PKEY_sign_init(ctx);
 627             break;
 628
 629         case EVP_PKEY_OP_VERIFY:
 630             rv = EVP_PKEY_verify_init(ctx);
 631             break;
 632
 633         case EVP_PKEY_OP_VERIFYRECOVER:
 634             rv = EVP_PKEY_verify_recover_init(ctx);
 635             break;
 636
 637         case EVP_PKEY_OP_ENCRYPT:
 638             rv = EVP_PKEY_encrypt_init(ctx);
 639             break;
 640
 641         case EVP_PKEY_OP_DECRYPT:
 642             rv = EVP_PKEY_decrypt_init(ctx);
 643             break;
 644
 645         case EVP_PKEY_OP_DERIVE:
 646             rv = EVP_PKEY_derive_init(ctx);
 647             break;
 648         }
 649     }
 650
 651     if (rv <= 0) {
 652         EVP_PKEY_CTX_free(ctx);
 653         ctx = NULL;
 654     }
 655
 656  end:
 657     OPENSSL_free(passin);
 658     return ctx;
 659
 660 }
 661
 662 static int setup_peer(EVP_PKEY_CTX *ctx, int peerform, const char *file,
 663                       ENGINE *e)
 664 {
 665     EVP_PKEY *peer = NULL;
 666     ENGINE *engine = NULL;
 667     int ret;
 668
 669     if (peerform == FORMAT_ENGINE)
 670         engine = e;
 671     peer = load_pubkey(file, peerform, 0, NULL, engine, "peer key");
 672     if (peer == NULL) {
 673         BIO_printf(bio_err, "Error reading peer key %s\n", file);
 674         ERR_print_errors(bio_err);
 675         return 0;
 676     }
 677
 678     ret = EVP_PKEY_derive_set_peer(ctx, peer);
 679
 680     EVP_PKEY_free(peer);
 681     if (ret <= 0)
 682         ERR_print_errors(bio_err);
 683     return ret;
 684 }
 685
 686 static int do_keyop(EVP_PKEY_CTX *ctx, int pkey_op,
 687                     unsigned char *out, size_t *poutlen,
 688                     const unsigned char *in, size_t inlen)
 689 {
 690     int rv = 0;
 691     switch (pkey_op) {
 692     case EVP_PKEY_OP_VERIFYRECOVER:
 693         rv = EVP_PKEY_verify_recover(ctx, out, poutlen, in, inlen);
 694         break;
 695
 696     case EVP_PKEY_OP_SIGN:
 697         rv = EVP_PKEY_sign(ctx, out, poutlen, in, inlen);
 698         break;
 699
 700     case EVP_PKEY_OP_ENCRYPT:
 701         rv = EVP_PKEY_encrypt(ctx, out, poutlen, in, inlen);
 702         break;
 703
 704     case EVP_PKEY_OP_DECRYPT:
 705         rv = EVP_PKEY_decrypt(ctx, out, poutlen, in, inlen);
 706         break;
 707
 708     case EVP_PKEY_OP_DERIVE:
 709         rv = EVP_PKEY_derive(ctx, out, poutlen);
 710         break;
 711
 712     }
 713     return rv;
 714 }
 715
 716 #define TBUF_MAXSIZE 2048
 717
 718 static int do_raw_keyop(int pkey_op, EVP_MD_CTX *mctx,
 719                         EVP_PKEY *pkey, BIO *in,
 720                         int filesize, unsigned char *sig, int siglen,
 721                         unsigned char **out, size_t *poutlen)
 722 {
 723     int rv = 0;
 724     unsigned char tbuf[TBUF_MAXSIZE];
 725     unsigned char *mbuf = NULL;
 726     int buf_len = 0;
 727
 728     /* Some algorithms only support oneshot digests */
 729     if (EVP_PKEY_get_id(pkey) == EVP_PKEY_ED25519
 730             || EVP_PKEY_get_id(pkey) == EVP_PKEY_ED448) {
 731         if (filesize < 0) {
 732             BIO_printf(bio_err,
 733                        "Error: unable to determine file size for oneshot operation\n");
 734             goto end;
 735         }
 736         mbuf = app_malloc(filesize, "oneshot sign/verify buffer");
 737         switch(pkey_op) {
 738         case EVP_PKEY_OP_VERIFY:
 739             buf_len = BIO_read(in, mbuf, filesize);
 740             if (buf_len != filesize) {
 741                 BIO_printf(bio_err, "Error reading raw input data\n");
 742                 goto end;
 743             }
 744             rv = EVP_DigestVerify(mctx, sig, (size_t)siglen, mbuf, buf_len);
 745             break;
 746         case EVP_PKEY_OP_SIGN:
 747             buf_len = BIO_read(in, mbuf, filesize);
 748             if (buf_len != filesize) {
 749                 BIO_printf(bio_err, "Error reading raw input data\n");
 750                 goto end;
 751             }
 752             rv = EVP_DigestSign(mctx, NULL, poutlen, mbuf, buf_len);
 753             if (rv == 1 && out != NULL) {
 754                 *out = app_malloc(*poutlen, "buffer output");
 755                 rv = EVP_DigestSign(mctx, *out, poutlen, mbuf, buf_len);
 756             }
 757             break;
 758         }
 759         goto end;
 760     }
 761
 762     switch(pkey_op) {
 763     case EVP_PKEY_OP_VERIFY:
 764         for (;;) {
 765             buf_len = BIO_read(in, tbuf, TBUF_MAXSIZE);
 766             if (buf_len == 0)
 767                 break;
 768             if (buf_len < 0) {
 769                 BIO_printf(bio_err, "Error reading raw input data\n");
 770                 goto end;
 771             }
 772             rv = EVP_DigestVerifyUpdate(mctx, tbuf, (size_t)buf_len);
 773             if (rv != 1) {
 774                 BIO_printf(bio_err, "Error verifying raw input data\n");
 775                 goto end;
 776             }
 777         }
 778         rv = EVP_DigestVerifyFinal(mctx, sig, (size_t)siglen);
 779         break;
 780     case EVP_PKEY_OP_SIGN:
 781         for (;;) {
 782             buf_len = BIO_read(in, tbuf, TBUF_MAXSIZE);
 783             if (buf_len == 0)
 784                 break;
 785             if (buf_len < 0) {
 786                 BIO_printf(bio_err, "Error reading raw input data\n");
 787                 goto end;
 788             }
 789             rv = EVP_DigestSignUpdate(mctx, tbuf, (size_t)buf_len);
 790             if (rv != 1) {
 791                 BIO_printf(bio_err, "Error signing raw input data\n");
 792                 goto end;
 793             }
 794         }
 795         rv = EVP_DigestSignFinal(mctx, NULL, poutlen);
 796         if (rv == 1 && out != NULL) {
 797             *out = app_malloc(*poutlen, "buffer output");
 798             rv = EVP_DigestSignFinal(mctx, *out, poutlen);
 799         }
 800         break;
 801     }
 802
 803  end:
 804     OPENSSL_free(mbuf);
 805     return rv;
 806 }