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     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 (digestname != 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
 296     if (rawin) {
 297         if ((mctx = EVP_MD_CTX_new()) == NULL) {
 298             BIO_printf(bio_err, "Error: out of memory\n");
 299             goto end;
 300         }
 301     }
 302     ctx = init_ctx(kdfalg, &keysize, inkey, keyform, key_type,
 303                    passinarg, pkey_op, e, engine_impl, rawin, &pkey,
 304                    mctx, digestname, libctx, app_get0_propq());
 305     if (ctx == NULL) {
 306         BIO_printf(bio_err, "%s: Error initializing context\n", prog);
 307         ERR_print_errors(bio_err);
 308         goto end;
 309     }
 310     if (peerkey != NULL && !setup_peer(ctx, peerform, peerkey, e)) {
 311         BIO_printf(bio_err, "%s: Error setting up peer key\n", prog);
 312         ERR_print_errors(bio_err);
 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                 ERR_print_errors(bio_err);
 326                 goto end;
 327             }
 328         }
 329     }
 330     if (pkeyopts_passin != NULL) {
 331         int num = sk_OPENSSL_STRING_num(pkeyopts_passin);
 332         int i;
 333
 334         for (i = 0; i < num; i++) {
 335             char *opt = sk_OPENSSL_STRING_value(pkeyopts_passin, i);
 336             char *passin = strchr(opt, ':');
 337             char *passwd;
 338
 339             if (passin == NULL) {
 340                 /* Get password interactively */
 341                 char passwd_buf[4096];
 342                 int r;
 343
 344                 BIO_snprintf(passwd_buf, sizeof(passwd_buf), "Enter %s: ", opt);
 345                 r = EVP_read_pw_string(passwd_buf, sizeof(passwd_buf) - 1,
 346                                        passwd_buf, 0);
 347                 if (r < 0) {
 348                     if (r == -2)
 349                         BIO_puts(bio_err, "user abort\n");
 350                     else
 351                         BIO_puts(bio_err, "entry failed\n");
 352                     goto end;
 353                 }
 354                 passwd = OPENSSL_strdup(passwd_buf);
 355                 if (passwd == NULL) {
 356                     BIO_puts(bio_err, "out of memory\n");
 357                     goto end;
 358                 }
 359             } else {
 360                 /* Get password as a passin argument: First split option name
 361                  * and passphrase argument into two strings */
 362                 *passin = 0;
 363                 passin++;
 364                 if (app_passwd(passin, NULL, &passwd, NULL) == 0) {
 365                     BIO_printf(bio_err, "failed to get '%s'\n", opt);
 366                     goto end;
 367                 }
 368             }
 369
 370             if (EVP_PKEY_CTX_ctrl_str(ctx, opt, passwd) <= 0) {
 371                 BIO_printf(bio_err, "%s: Can't set parameter \"%s\":\n",
 372                            prog, opt);
 373                 goto end;
 374             }
 375             OPENSSL_free(passwd);
 376         }
 377     }
 378
 379     if (sigfile != NULL && (pkey_op != EVP_PKEY_OP_VERIFY)) {
 380         BIO_printf(bio_err,
 381                    "%s: Signature file specified for non verify\n", prog);
 382         goto end;
 383     }
 384
 385     if (sigfile == NULL && (pkey_op == EVP_PKEY_OP_VERIFY)) {
 386         BIO_printf(bio_err,
 387                    "%s: No signature file specified for verify\n", prog);
 388         goto end;
 389     }
 390
 391     if (pkey_op != EVP_PKEY_OP_DERIVE) {
 392         in = bio_open_default(infile, 'r', FORMAT_BINARY);
 393         if (infile != NULL) {
 394             struct stat st;
 395
 396             if (stat(infile, &st) == 0 && st.st_size <= INT_MAX)
 397                 filesize = (int)st.st_size;
 398         }
 399         if (in == NULL)
 400             goto end;
 401     }
 402     out = bio_open_default(outfile, 'w', FORMAT_BINARY);
 403     if (out == NULL)
 404         goto end;
 405
 406     if (sigfile != NULL) {
 407         BIO *sigbio = BIO_new_file(sigfile, "rb");
 408
 409         if (sigbio == NULL) {
 410             BIO_printf(bio_err, "Can't open signature file %s\n", sigfile);
 411             goto end;
 412         }
 413         siglen = bio_to_mem(&sig, keysize * 10, sigbio);
 414         BIO_free(sigbio);
 415         if (siglen < 0) {
 416             BIO_printf(bio_err, "Error reading signature data\n");
 417             goto end;
 418         }
 419     }
 420
 421     /* Raw input data is handled elsewhere */
 422     if (in != NULL && !rawin) {
 423         /* Read the input data */
 424         buf_inlen = bio_to_mem(&buf_in, keysize * 10, in);
 425         if (buf_inlen < 0) {
 426             BIO_printf(bio_err, "Error reading input Data\n");
 427             goto end;
 428         }
 429         if (rev) {
 430             size_t i;
 431             unsigned char ctmp;
 432             size_t l = (size_t)buf_inlen;
 433             for (i = 0; i < l / 2; i++) {
 434                 ctmp = buf_in[i];
 435                 buf_in[i] = buf_in[l - 1 - i];
 436                 buf_in[l - 1 - i] = ctmp;
 437             }
 438         }
 439     }
 440
 441     /* Sanity check the input if the input is not raw */
 442     if (!rawin
 443             && buf_inlen > EVP_MAX_MD_SIZE
 444             && (pkey_op == EVP_PKEY_OP_SIGN
 445                 || pkey_op == EVP_PKEY_OP_VERIFY)) {
 446         BIO_printf(bio_err,
 447                    "Error: The input data looks too long to be a hash\n");
 448         goto end;
 449     }
 450
 451     if (pkey_op == EVP_PKEY_OP_VERIFY) {
 452         if (rawin) {
 453             rv = do_raw_keyop(pkey_op, mctx, pkey, in, filesize, sig, siglen,
 454                               NULL, 0);
 455         } else {
 456             rv = EVP_PKEY_verify(ctx, sig, (size_t)siglen,
 457                                  buf_in, (size_t)buf_inlen);
 458         }
 459         if (rv == 1) {
 460             BIO_puts(out, "Signature Verified Successfully\n");
 461             ret = 0;
 462         } else {
 463             BIO_puts(out, "Signature Verification Failure\n");
 464         }
 465         goto end;
 466     }
 467     if (kdflen != 0) {
 468         buf_outlen = kdflen;
 469         rv = 1;
 470     } else {
 471         if (rawin) {
 472             /* rawin allocates the buffer in do_raw_keyop() */
 473             rv = do_raw_keyop(pkey_op, mctx, pkey, in, filesize, NULL, 0,
 474                               &buf_out, (size_t *)&buf_outlen);
 475         } else {
 476             rv = do_keyop(ctx, pkey_op, NULL, (size_t *)&buf_outlen,
 477                           buf_in, (size_t)buf_inlen);
 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     }
 486     if (rv <= 0) {
 487         if (pkey_op != EVP_PKEY_OP_DERIVE) {
 488             BIO_puts(bio_err, "Public Key operation error\n");
 489         } else {
 490             BIO_puts(bio_err, "Key derivation failed\n");
 491         }
 492         ERR_print_errors(bio_err);
 493         goto end;
 494     }
 495     ret = 0;
 496
 497     if (asn1parse) {
 498         if (!ASN1_parse_dump(out, buf_out, buf_outlen, 1, -1))
 499             ERR_print_errors(bio_err);
 500     } else if (hexdump) {
 501         BIO_dump(out, (char *)buf_out, buf_outlen);
 502     } else {
 503         BIO_write(out, buf_out, buf_outlen);
 504     }
 505
 506  end:
 507     EVP_MD_CTX_free(mctx);
 508     EVP_PKEY_CTX_free(ctx);
 509     release_engine(e);
 510     BIO_free(in);
 511     BIO_free_all(out);
 512     OPENSSL_free(buf_in);
 513     OPENSSL_free(buf_out);
 514     OPENSSL_free(sig);
 515     sk_OPENSSL_STRING_free(pkeyopts);
 516     sk_OPENSSL_STRING_free(pkeyopts_passin);
 517     NCONF_free(conf);
 518     return ret;
 519 }
 520
 521 static EVP_PKEY_CTX *init_ctx(const char *kdfalg, int *pkeysize,
 522                               const char *keyfile, int keyform, int key_type,
 523                               char *passinarg, int pkey_op, ENGINE *e,
 524                               const int engine_impl, int rawin,
 525                               EVP_PKEY **ppkey, EVP_MD_CTX *mctx, const char *digestname,
 526                               OSSL_LIB_CTX *libctx, const char *propq)
 527 {
 528     EVP_PKEY *pkey = NULL;
 529     EVP_PKEY_CTX *ctx = NULL;
 530     ENGINE *impl = NULL;
 531     char *passin = NULL;
 532     int rv = -1;
 533     X509 *x;
 534
 535     if (((pkey_op == EVP_PKEY_OP_SIGN) || (pkey_op == EVP_PKEY_OP_DECRYPT)
 536          || (pkey_op == EVP_PKEY_OP_DERIVE))
 537         && (key_type != KEY_PRIVKEY && kdfalg == NULL)) {
 538         BIO_printf(bio_err, "A private key is needed for this operation\n");
 539         goto end;
 540     }
 541     if (!app_passwd(passinarg, NULL, &passin, NULL)) {
 542         BIO_printf(bio_err, "Error getting password\n");
 543         goto end;
 544     }
 545     switch (key_type) {
 546     case KEY_PRIVKEY:
 547         pkey = load_key(keyfile, keyform, 0, passin, e, "private key");
 548         break;
 549
 550     case KEY_PUBKEY:
 551         pkey = load_pubkey(keyfile, keyform, 0, NULL, e, "public key");
 552         break;
 553
 554     case KEY_CERT:
 555         x = load_cert(keyfile, "Certificate");
 556         if (x) {
 557             pkey = X509_get_pubkey(x);
 558             X509_free(x);
 559         }
 560         break;
 561
 562     case KEY_NONE:
 563         break;
 564
 565     }
 566
 567 #ifndef OPENSSL_NO_ENGINE
 568     if (engine_impl)
 569         impl = e;
 570 #endif
 571
 572     if (kdfalg != NULL) {
 573         int kdfnid = OBJ_sn2nid(kdfalg);
 574
 575         if (kdfnid == NID_undef) {
 576             kdfnid = OBJ_ln2nid(kdfalg);
 577             if (kdfnid == NID_undef) {
 578                 BIO_printf(bio_err, "The given KDF \"%s\" is unknown.\n",
 579                            kdfalg);
 580                 goto end;
 581             }
 582         }
 583         if (impl != NULL)
 584             ctx = EVP_PKEY_CTX_new_id(kdfnid, impl);
 585         else
 586             ctx = EVP_PKEY_CTX_new_from_name(libctx, kdfalg, propq);
 587     } else {
 588         if (pkey == NULL)
 589             goto end;
 590
 591         *pkeysize = EVP_PKEY_size(pkey);
 592         if (impl != NULL)
 593             ctx = EVP_PKEY_CTX_new(pkey, impl);
 594         else
 595             ctx = EVP_PKEY_CTX_new_from_pkey(libctx, pkey, propq);
 596         if (ppkey != NULL)
 597             *ppkey = pkey;
 598         EVP_PKEY_free(pkey);
 599     }
 600
 601     if (ctx == NULL)
 602         goto end;
 603
 604     if (rawin) {
 605         EVP_MD_CTX_set_pkey_ctx(mctx, ctx);
 606
 607         switch (pkey_op) {
 608         case EVP_PKEY_OP_SIGN:
 609             rv = EVP_DigestSignInit_ex(mctx, NULL, digestname, libctx, propq, pkey);
 610             break;
 611
 612         case EVP_PKEY_OP_VERIFY:
 613             rv = EVP_DigestVerifyInit_ex(mctx, NULL, digestname, libctx, propq, pkey);
 614             break;
 615         }
 616
 617     } else {
 618         switch (pkey_op) {
 619         case EVP_PKEY_OP_SIGN:
 620             rv = EVP_PKEY_sign_init(ctx);
 621             break;
 622
 623         case EVP_PKEY_OP_VERIFY:
 624             rv = EVP_PKEY_verify_init(ctx);
 625             break;
 626
 627         case EVP_PKEY_OP_VERIFYRECOVER:
 628             rv = EVP_PKEY_verify_recover_init(ctx);
 629             break;
 630
 631         case EVP_PKEY_OP_ENCRYPT:
 632             rv = EVP_PKEY_encrypt_init(ctx);
 633             break;
 634
 635         case EVP_PKEY_OP_DECRYPT:
 636             rv = EVP_PKEY_decrypt_init(ctx);
 637             break;
 638
 639         case EVP_PKEY_OP_DERIVE:
 640             rv = EVP_PKEY_derive_init(ctx);
 641             break;
 642         }
 643     }
 644
 645     if (rv <= 0) {
 646         EVP_PKEY_CTX_free(ctx);
 647         ctx = NULL;
 648     }
 649
 650  end:
 651     OPENSSL_free(passin);
 652     return ctx;
 653
 654 }
 655
 656 static int setup_peer(EVP_PKEY_CTX *ctx, int peerform, const char *file,
 657                       ENGINE *e)
 658 {
 659     EVP_PKEY *peer = NULL;
 660     ENGINE *engine = NULL;
 661     int ret;
 662
 663     if (peerform == FORMAT_ENGINE)
 664         engine = e;
 665     peer = load_pubkey(file, peerform, 0, NULL, engine, "peer key");
 666     if (peer == NULL) {
 667         BIO_printf(bio_err, "Error reading peer key %s\n", file);
 668         ERR_print_errors(bio_err);
 669         return 0;
 670     }
 671
 672     ret = EVP_PKEY_derive_set_peer(ctx, peer);
 673
 674     EVP_PKEY_free(peer);
 675     if (ret <= 0)
 676         ERR_print_errors(bio_err);
 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_id(pkey) == EVP_PKEY_ED25519
 724             || EVP_PKEY_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 }