crypto/openssl/apps/pkeyutl.c

   1 /*
   2  * Copyright 2006-2023 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         goto end;
 311     }
 312     if (peerkey != NULL && !setup_peer(ctx, peerform, peerkey, e)) {
 313         BIO_printf(bio_err, "%s: Error setting up peer key\n", prog);
 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                 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, -1, 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 (rawin) {
 468         /* rawin allocates the buffer in do_raw_keyop() */
 469         rv = do_raw_keyop(pkey_op, mctx, pkey, in, filesize, NULL, 0,
 470                           &buf_out, (size_t *)&buf_outlen);
 471     } else {
 472         if (kdflen != 0) {
 473             buf_outlen = kdflen;
 474             rv = 1;
 475         } else {
 476             rv = do_keyop(ctx, pkey_op, NULL, (size_t *)&buf_outlen,
 477                           buf_in, (size_t)buf_inlen);
 478         }
 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     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         goto end;
 493     }
 494     ret = 0;
 495
 496     if (asn1parse) {
 497         if (!ASN1_parse_dump(out, buf_out, buf_outlen, 1, -1))
 498             ERR_print_errors(bio_err); /* but still return success */
 499     } else if (hexdump) {
 500         BIO_dump(out, (char *)buf_out, buf_outlen);
 501     } else {
 502         BIO_write(out, buf_out, buf_outlen);
 503     }
 504
 505  end:
 506     if (ret != 0)
 507         ERR_print_errors(bio_err);
 508     EVP_MD_CTX_free(mctx);
 509     EVP_PKEY_CTX_free(ctx);
 510     EVP_MD_free(md);
 511     release_engine(e);
 512     BIO_free(in);
 513     BIO_free_all(out);
 514     OPENSSL_free(buf_in);
 515     OPENSSL_free(buf_out);
 516     OPENSSL_free(sig);
 517     sk_OPENSSL_STRING_free(pkeyopts);
 518     sk_OPENSSL_STRING_free(pkeyopts_passin);
 519     NCONF_free(conf);
 520     return ret;
 521 }
 522
 523 static EVP_PKEY_CTX *init_ctx(const char *kdfalg, int *pkeysize,
 524                               const char *keyfile, int keyform, int key_type,
 525                               char *passinarg, int pkey_op, ENGINE *e,
 526                               const int engine_impl, int rawin,
 527                               EVP_PKEY **ppkey, EVP_MD_CTX *mctx, const char *digestname,
 528                               OSSL_LIB_CTX *libctx, const char *propq)
 529 {
 530     EVP_PKEY *pkey = NULL;
 531     EVP_PKEY_CTX *ctx = NULL;
 532     ENGINE *impl = NULL;
 533     char *passin = NULL;
 534     int rv = -1;
 535     X509 *x;
 536
 537     if (((pkey_op == EVP_PKEY_OP_SIGN) || (pkey_op == EVP_PKEY_OP_DECRYPT)
 538          || (pkey_op == EVP_PKEY_OP_DERIVE))
 539         && (key_type != KEY_PRIVKEY && kdfalg == NULL)) {
 540         BIO_printf(bio_err, "A private key is needed for this operation\n");
 541         goto end;
 542     }
 543     if (!app_passwd(passinarg, NULL, &passin, NULL)) {
 544         BIO_printf(bio_err, "Error getting password\n");
 545         goto end;
 546     }
 547     switch (key_type) {
 548     case KEY_PRIVKEY:
 549         pkey = load_key(keyfile, keyform, 0, passin, e, "private key");
 550         break;
 551
 552     case KEY_PUBKEY:
 553         pkey = load_pubkey(keyfile, keyform, 0, NULL, e, "public key");
 554         break;
 555
 556     case KEY_CERT:
 557         x = load_cert(keyfile, keyform, "Certificate");
 558         if (x) {
 559             pkey = X509_get_pubkey(x);
 560             X509_free(x);
 561         }
 562         break;
 563
 564     case KEY_NONE:
 565         break;
 566
 567     }
 568
 569 #ifndef OPENSSL_NO_ENGINE
 570     if (engine_impl)
 571         impl = e;
 572 #endif
 573
 574     if (kdfalg != NULL) {
 575         int kdfnid = OBJ_sn2nid(kdfalg);
 576
 577         if (kdfnid == NID_undef) {
 578             kdfnid = OBJ_ln2nid(kdfalg);
 579             if (kdfnid == NID_undef) {
 580                 BIO_printf(bio_err, "The given KDF \"%s\" is unknown.\n",
 581                            kdfalg);
 582                 goto end;
 583             }
 584         }
 585         if (impl != NULL)
 586             ctx = EVP_PKEY_CTX_new_id(kdfnid, impl);
 587         else
 588             ctx = EVP_PKEY_CTX_new_from_name(libctx, kdfalg, propq);
 589     } else {
 590         if (pkey == NULL)
 591             goto end;
 592
 593         *pkeysize = EVP_PKEY_get_size(pkey);
 594         if (impl != NULL)
 595             ctx = EVP_PKEY_CTX_new(pkey, impl);
 596         else
 597             ctx = EVP_PKEY_CTX_new_from_pkey(libctx, pkey, propq);
 598         if (ppkey != NULL)
 599             *ppkey = pkey;
 600         EVP_PKEY_free(pkey);
 601     }
 602
 603     if (ctx == NULL)
 604         goto end;
 605
 606     if (rawin) {
 607         EVP_MD_CTX_set_pkey_ctx(mctx, ctx);
 608
 609         switch (pkey_op) {
 610         case EVP_PKEY_OP_SIGN:
 611             rv = EVP_DigestSignInit_ex(mctx, NULL, digestname, libctx, propq,
 612                                        pkey, NULL);
 613             break;
 614
 615         case EVP_PKEY_OP_VERIFY:
 616             rv = EVP_DigestVerifyInit_ex(mctx, NULL, digestname, libctx, propq,
 617                                          pkey, NULL);
 618             break;
 619         }
 620
 621     } else {
 622         switch (pkey_op) {
 623         case EVP_PKEY_OP_SIGN:
 624             rv = EVP_PKEY_sign_init(ctx);
 625             break;
 626
 627         case EVP_PKEY_OP_VERIFY:
 628             rv = EVP_PKEY_verify_init(ctx);
 629             break;
 630
 631         case EVP_PKEY_OP_VERIFYRECOVER:
 632             rv = EVP_PKEY_verify_recover_init(ctx);
 633             break;
 634
 635         case EVP_PKEY_OP_ENCRYPT:
 636             rv = EVP_PKEY_encrypt_init(ctx);
 637             break;
 638
 639         case EVP_PKEY_OP_DECRYPT:
 640             rv = EVP_PKEY_decrypt_init(ctx);
 641             break;
 642
 643         case EVP_PKEY_OP_DERIVE:
 644             rv = EVP_PKEY_derive_init(ctx);
 645             break;
 646         }
 647     }
 648
 649     if (rv <= 0) {
 650         EVP_PKEY_CTX_free(ctx);
 651         ctx = NULL;
 652     }
 653
 654  end:
 655     OPENSSL_free(passin);
 656     return ctx;
 657
 658 }
 659
 660 static int setup_peer(EVP_PKEY_CTX *ctx, int peerform, const char *file,
 661                       ENGINE *e)
 662 {
 663     EVP_PKEY *peer = NULL;
 664     ENGINE *engine = NULL;
 665     int ret;
 666
 667     if (peerform == FORMAT_ENGINE)
 668         engine = e;
 669     peer = load_pubkey(file, peerform, 0, NULL, engine, "peer key");
 670     if (peer == NULL) {
 671         BIO_printf(bio_err, "Error reading peer key %s\n", file);
 672         return 0;
 673     }
 674
 675     ret = EVP_PKEY_derive_set_peer(ctx, peer) > 0;
 676
 677     EVP_PKEY_free(peer);
 678     return ret;
 679 }
 680
 681 static int do_keyop(EVP_PKEY_CTX *ctx, int pkey_op,
 682                     unsigned char *out, size_t *poutlen,
 683                     const unsigned char *in, size_t inlen)
 684 {
 685     int rv = 0;
 686     switch (pkey_op) {
 687     case EVP_PKEY_OP_VERIFYRECOVER:
 688         rv = EVP_PKEY_verify_recover(ctx, out, poutlen, in, inlen);
 689         break;
 690
 691     case EVP_PKEY_OP_SIGN:
 692         rv = EVP_PKEY_sign(ctx, out, poutlen, in, inlen);
 693         break;
 694
 695     case EVP_PKEY_OP_ENCRYPT:
 696         rv = EVP_PKEY_encrypt(ctx, out, poutlen, in, inlen);
 697         break;
 698
 699     case EVP_PKEY_OP_DECRYPT:
 700         rv = EVP_PKEY_decrypt(ctx, out, poutlen, in, inlen);
 701         break;
 702
 703     case EVP_PKEY_OP_DERIVE:
 704         rv = EVP_PKEY_derive(ctx, out, poutlen);
 705         break;
 706
 707     }
 708     return rv;
 709 }
 710
 711 #define TBUF_MAXSIZE 2048
 712
 713 static int do_raw_keyop(int pkey_op, EVP_MD_CTX *mctx,
 714                         EVP_PKEY *pkey, BIO *in,
 715                         int filesize, unsigned char *sig, int siglen,
 716                         unsigned char **out, size_t *poutlen)
 717 {
 718     int rv = 0;
 719     unsigned char tbuf[TBUF_MAXSIZE];
 720     unsigned char *mbuf = NULL;
 721     int buf_len = 0;
 722
 723     /* Some algorithms only support oneshot digests */
 724     if (EVP_PKEY_get_id(pkey) == EVP_PKEY_ED25519
 725             || EVP_PKEY_get_id(pkey) == EVP_PKEY_ED448) {
 726         if (filesize < 0) {
 727             BIO_printf(bio_err,
 728                        "Error: unable to determine file size for oneshot operation\n");
 729             goto end;
 730         }
 731         mbuf = app_malloc(filesize, "oneshot sign/verify buffer");
 732         switch(pkey_op) {
 733         case EVP_PKEY_OP_VERIFY:
 734             buf_len = BIO_read(in, mbuf, filesize);
 735             if (buf_len != filesize) {
 736                 BIO_printf(bio_err, "Error reading raw input data\n");
 737                 goto end;
 738             }
 739             rv = EVP_DigestVerify(mctx, sig, (size_t)siglen, mbuf, buf_len);
 740             break;
 741         case EVP_PKEY_OP_SIGN:
 742             buf_len = BIO_read(in, mbuf, filesize);
 743             if (buf_len != filesize) {
 744                 BIO_printf(bio_err, "Error reading raw input data\n");
 745                 goto end;
 746             }
 747             rv = EVP_DigestSign(mctx, NULL, poutlen, mbuf, buf_len);
 748             if (rv == 1 && out != NULL) {
 749                 *out = app_malloc(*poutlen, "buffer output");
 750                 rv = EVP_DigestSign(mctx, *out, poutlen, mbuf, buf_len);
 751             }
 752             break;
 753         }
 754         goto end;
 755     }
 756
 757     switch(pkey_op) {
 758     case EVP_PKEY_OP_VERIFY:
 759         for (;;) {
 760             buf_len = BIO_read(in, tbuf, TBUF_MAXSIZE);
 761             if (buf_len == 0)
 762                 break;
 763             if (buf_len < 0) {
 764                 BIO_printf(bio_err, "Error reading raw input data\n");
 765                 goto end;
 766             }
 767             rv = EVP_DigestVerifyUpdate(mctx, tbuf, (size_t)buf_len);
 768             if (rv != 1) {
 769                 BIO_printf(bio_err, "Error verifying raw input data\n");
 770                 goto end;
 771             }
 772         }
 773         rv = EVP_DigestVerifyFinal(mctx, sig, (size_t)siglen);
 774         break;
 775     case EVP_PKEY_OP_SIGN:
 776         for (;;) {
 777             buf_len = BIO_read(in, tbuf, TBUF_MAXSIZE);
 778             if (buf_len == 0)
 779                 break;
 780             if (buf_len < 0) {
 781                 BIO_printf(bio_err, "Error reading raw input data\n");
 782                 goto end;
 783             }
 784             rv = EVP_DigestSignUpdate(mctx, tbuf, (size_t)buf_len);
 785             if (rv != 1) {
 786                 BIO_printf(bio_err, "Error signing raw input data\n");
 787                 goto end;
 788             }
 789         }
 790         rv = EVP_DigestSignFinal(mctx, NULL, poutlen);
 791         if (rv == 1 && out != NULL) {
 792             *out = app_malloc(*poutlen, "buffer output");
 793             rv = EVP_DigestSignFinal(mctx, *out, poutlen);
 794         }
 795         break;
 796     }
 797
 798  end:
 799     OPENSSL_free(mbuf);
 800     return rv;
 801 }