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                               OSSL_LIB_CTX *libctx);
  28
  29 static int setup_peer(EVP_PKEY_CTX *ctx, int peerform, const char *file,
  30                       ENGINE *e);
  31
  32 static int do_keyop(EVP_PKEY_CTX *ctx, int pkey_op,
  33                     unsigned char *out, size_t *poutlen,
  34                     const unsigned char *in, size_t inlen);
  35
  36 static int do_raw_keyop(int pkey_op, EVP_PKEY_CTX *ctx,
  37                         const EVP_MD *md, EVP_PKEY *pkey, BIO *in,
  38                         int filesize, unsigned char *sig, int siglen,
  39                         unsigned char **out, size_t *poutlen);
  40
  41 typedef enum OPTION_choice {
  42     OPT_ERR = -1, OPT_EOF = 0, OPT_HELP,
  43     OPT_ENGINE, OPT_ENGINE_IMPL, OPT_IN, OPT_OUT,
  44     OPT_PUBIN, OPT_CERTIN, OPT_ASN1PARSE, OPT_HEXDUMP, OPT_SIGN,
  45     OPT_VERIFY, OPT_VERIFYRECOVER, OPT_REV, OPT_ENCRYPT, OPT_DECRYPT,
  46     OPT_DERIVE, OPT_SIGFILE, OPT_INKEY, OPT_PEERKEY, OPT_PASSIN,
  47     OPT_PEERFORM, OPT_KEYFORM, OPT_PKEYOPT, OPT_PKEYOPT_PASSIN, OPT_KDF,
  48     OPT_KDFLEN, OPT_R_ENUM, OPT_PROV_ENUM,
  49     OPT_CONFIG,
  50     OPT_RAWIN, OPT_DIGEST
  51 } OPTION_CHOICE;
  52
  53 const OPTIONS pkeyutl_options[] = {
  54     OPT_SECTION("General"),
  55     {"help", OPT_HELP, '-', "Display this summary"},
  56 #ifndef OPENSSL_NO_ENGINE
  57     {"engine", OPT_ENGINE, 's', "Use engine, possibly a hardware device"},
  58     {"engine_impl", OPT_ENGINE_IMPL, '-',
  59      "Also use engine given by -engine for crypto operations"},
  60 #endif
  61     {"sign", OPT_SIGN, '-', "Sign input data with private key"},
  62     {"verify", OPT_VERIFY, '-', "Verify with public key"},
  63     {"encrypt", OPT_ENCRYPT, '-', "Encrypt input data with public key"},
  64     {"decrypt", OPT_DECRYPT, '-', "Decrypt input data with private key"},
  65     {"derive", OPT_DERIVE, '-', "Derive shared secret"},
  66     OPT_CONFIG_OPTION,
  67
  68     OPT_SECTION("Input"),
  69     {"in", OPT_IN, '<', "Input file - default stdin"},
  70     {"rawin", OPT_RAWIN, '-', "Indicate the input data is in raw form"},
  71     {"pubin", OPT_PUBIN, '-', "Input is a public key"},
  72     {"inkey", OPT_INKEY, 's', "Input private key file"},
  73     {"passin", OPT_PASSIN, 's', "Input file pass phrase source"},
  74     {"peerkey", OPT_PEERKEY, 's', "Peer key file used in key derivation"},
  75     {"peerform", OPT_PEERFORM, 'E', "Peer key format (DER/PEM/P12/ENGINE)"},
  76     {"certin", OPT_CERTIN, '-', "Input is a cert with a public key"},
  77     {"rev", OPT_REV, '-', "Reverse the order of the input buffer"},
  78     {"sigfile", OPT_SIGFILE, '<', "Signature file (verify operation only)"},
  79     {"keyform", OPT_KEYFORM, 'E', "Private key format (ENGINE, other values ignored)"},
  80
  81     OPT_SECTION("Output"),
  82     {"out", OPT_OUT, '>', "Output file - default stdout"},
  83     {"asn1parse", OPT_ASN1PARSE, '-', "asn1parse the output data"},
  84     {"hexdump", OPT_HEXDUMP, '-', "Hex dump output"},
  85     {"verifyrecover", OPT_VERIFYRECOVER, '-',
  86      "Verify with public key, recover original data"},
  87
  88     OPT_SECTION("Signing/Derivation"),
  89     {"digest", OPT_DIGEST, 's',
  90      "Specify the digest algorithm when signing the raw input data"},
  91     {"pkeyopt", OPT_PKEYOPT, 's', "Public key options as opt:value"},
  92     {"pkeyopt_passin", OPT_PKEYOPT_PASSIN, 's',
  93      "Public key option that is read as a passphrase argument opt:passphrase"},
  94     {"kdf", OPT_KDF, 's', "Use KDF algorithm"},
  95     {"kdflen", OPT_KDFLEN, 'p', "KDF algorithm output length"},
  96
  97     OPT_R_OPTIONS,
  98     OPT_PROV_OPTIONS,
  99     {NULL}
 100 };
 101
 102 int pkeyutl_main(int argc, char **argv)
 103 {
 104     CONF *conf = NULL;
 105     BIO *in = NULL, *out = NULL;
 106     ENGINE *e = NULL;
 107     EVP_PKEY_CTX *ctx = NULL;
 108     EVP_PKEY *pkey = NULL;
 109     char *infile = NULL, *outfile = NULL, *sigfile = NULL, *passinarg = NULL;
 110     char hexdump = 0, asn1parse = 0, rev = 0, *prog;
 111     unsigned char *buf_in = NULL, *buf_out = NULL, *sig = NULL;
 112     OPTION_CHOICE o;
 113     int buf_inlen = 0, siglen = -1, keyform = FORMAT_PEM, peerform = FORMAT_PEM;
 114     int keysize = -1, pkey_op = EVP_PKEY_OP_SIGN, key_type = KEY_PRIVKEY;
 115     int engine_impl = 0;
 116     int ret = 1, rv = -1;
 117     size_t buf_outlen;
 118     const char *inkey = NULL;
 119     const char *peerkey = NULL;
 120     const char *kdfalg = NULL, *digestname = NULL;
 121     int kdflen = 0;
 122     STACK_OF(OPENSSL_STRING) *pkeyopts = NULL;
 123     STACK_OF(OPENSSL_STRING) *pkeyopts_passin = NULL;
 124     int rawin = 0;
 125     const EVP_MD *md = NULL;
 126     int filesize = -1;
 127     OSSL_LIB_CTX *libctx = app_get0_libctx();
 128
 129     prog = opt_init(argc, argv, pkeyutl_options);
 130     while ((o = opt_next()) != OPT_EOF) {
 131         switch (o) {
 132         case OPT_EOF:
 133         case OPT_ERR:
 134  opthelp:
 135             BIO_printf(bio_err, "%s: Use -help for summary.\n", prog);
 136             goto end;
 137         case OPT_HELP:
 138             opt_help(pkeyutl_options);
 139             ret = 0;
 140             goto end;
 141         case OPT_IN:
 142             infile = opt_arg();
 143             break;
 144         case OPT_OUT:
 145             outfile = opt_arg();
 146             break;
 147         case OPT_SIGFILE:
 148             sigfile = opt_arg();
 149             break;
 150         case OPT_ENGINE_IMPL:
 151             engine_impl = 1;
 152             break;
 153         case OPT_INKEY:
 154             inkey = opt_arg();
 155             break;
 156         case OPT_PEERKEY:
 157             peerkey = opt_arg();
 158             break;
 159         case OPT_PASSIN:
 160             passinarg = opt_arg();
 161             break;
 162         case OPT_PEERFORM:
 163             if (!opt_format(opt_arg(), OPT_FMT_ANY, &peerform))
 164                 goto opthelp;
 165             break;
 166         case OPT_KEYFORM:
 167             if (!opt_format(opt_arg(), OPT_FMT_ANY, &keyform))
 168                 goto opthelp;
 169             break;
 170         case OPT_R_CASES:
 171             if (!opt_rand(o))
 172                 goto end;
 173             break;
 174         case OPT_CONFIG:
 175             conf = app_load_config_modules(opt_arg());
 176             if (conf == NULL)
 177                 goto end;
 178             break;
 179         case OPT_PROV_CASES:
 180             if (!opt_provider(o))
 181                 goto end;
 182             break;
 183         case OPT_ENGINE:
 184             e = setup_engine(opt_arg(), 0);
 185             break;
 186         case OPT_PUBIN:
 187             key_type = KEY_PUBKEY;
 188             break;
 189         case OPT_CERTIN:
 190             key_type = KEY_CERT;
 191             break;
 192         case OPT_ASN1PARSE:
 193             asn1parse = 1;
 194             break;
 195         case OPT_HEXDUMP:
 196             hexdump = 1;
 197             break;
 198         case OPT_SIGN:
 199             pkey_op = EVP_PKEY_OP_SIGN;
 200             break;
 201         case OPT_VERIFY:
 202             pkey_op = EVP_PKEY_OP_VERIFY;
 203             break;
 204         case OPT_VERIFYRECOVER:
 205             pkey_op = EVP_PKEY_OP_VERIFYRECOVER;
 206             break;
 207         case OPT_ENCRYPT:
 208             pkey_op = EVP_PKEY_OP_ENCRYPT;
 209             break;
 210         case OPT_DECRYPT:
 211             pkey_op = EVP_PKEY_OP_DECRYPT;
 212             break;
 213         case OPT_DERIVE:
 214             pkey_op = EVP_PKEY_OP_DERIVE;
 215             break;
 216         case OPT_KDF:
 217             pkey_op = EVP_PKEY_OP_DERIVE;
 218             key_type = KEY_NONE;
 219             kdfalg = opt_arg();
 220             break;
 221         case OPT_KDFLEN:
 222             kdflen = atoi(opt_arg());
 223             break;
 224         case OPT_REV:
 225             rev = 1;
 226             break;
 227         case OPT_PKEYOPT:
 228             if ((pkeyopts == NULL &&
 229                  (pkeyopts = sk_OPENSSL_STRING_new_null()) == NULL) ||
 230                 sk_OPENSSL_STRING_push(pkeyopts, opt_arg()) == 0) {
 231                 BIO_puts(bio_err, "out of memory\n");
 232                 goto end;
 233             }
 234             break;
 235         case OPT_PKEYOPT_PASSIN:
 236             if ((pkeyopts_passin == NULL &&
 237                  (pkeyopts_passin = sk_OPENSSL_STRING_new_null()) == NULL) ||
 238                 sk_OPENSSL_STRING_push(pkeyopts_passin, opt_arg()) == 0) {
 239                 BIO_puts(bio_err, "out of memory\n");
 240                 goto end;
 241             }
 242             break;
 243         case OPT_RAWIN:
 244             rawin = 1;
 245             break;
 246         case OPT_DIGEST:
 247             digestname = opt_arg();
 248             break;
 249         }
 250     }
 251
 252     /* No extra arguments. */
 253     argc = opt_num_rest();
 254     if (argc != 0)
 255         goto opthelp;
 256
 257     app_RAND_load();
 258     if (digestname != NULL) {
 259         if (!opt_md(digestname, &md))
 260             goto end;
 261     }
 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 (md != 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     ctx = init_ctx(kdfalg, &keysize, inkey, keyform, key_type,
 299                    passinarg, pkey_op, e, engine_impl, rawin, &pkey,
 300                    libctx);
 301     if (ctx == NULL) {
 302         BIO_printf(bio_err, "%s: Error initializing context\n", prog);
 303         ERR_print_errors(bio_err);
 304         goto end;
 305     }
 306     if (peerkey != NULL && !setup_peer(ctx, peerform, peerkey, e)) {
 307         BIO_printf(bio_err, "%s: Error setting up peer key\n", prog);
 308         ERR_print_errors(bio_err);
 309         goto end;
 310     }
 311     if (pkeyopts != NULL) {
 312         int num = sk_OPENSSL_STRING_num(pkeyopts);
 313         int i;
 314
 315         for (i = 0; i < num; ++i) {
 316             const char *opt = sk_OPENSSL_STRING_value(pkeyopts, i);
 317
 318             if (pkey_ctrl_string(ctx, opt) <= 0) {
 319                 BIO_printf(bio_err, "%s: Can't set parameter \"%s\":\n",
 320                            prog, opt);
 321                 ERR_print_errors(bio_err);
 322                 goto end;
 323             }
 324         }
 325     }
 326     if (pkeyopts_passin != NULL) {
 327         int num = sk_OPENSSL_STRING_num(pkeyopts_passin);
 328         int i;
 329
 330         for (i = 0; i < num; i++) {
 331             char *opt = sk_OPENSSL_STRING_value(pkeyopts_passin, i);
 332             char *passin = strchr(opt, ':');
 333             char *passwd;
 334
 335             if (passin == NULL) {
 336                 /* Get password interactively */
 337                 char passwd_buf[4096];
 338                 int r;
 339
 340                 BIO_snprintf(passwd_buf, sizeof(passwd_buf), "Enter %s: ", opt);
 341                 r = EVP_read_pw_string(passwd_buf, sizeof(passwd_buf) - 1,
 342                                        passwd_buf, 0);
 343                 if (r < 0) {
 344                     if (r == -2)
 345                         BIO_puts(bio_err, "user abort\n");
 346                     else
 347                         BIO_puts(bio_err, "entry failed\n");
 348                     goto end;
 349                 }
 350                 passwd = OPENSSL_strdup(passwd_buf);
 351                 if (passwd == NULL) {
 352                     BIO_puts(bio_err, "out of memory\n");
 353                     goto end;
 354                 }
 355             } else {
 356                 /* Get password as a passin argument: First split option name
 357                  * and passphrase argument into two strings */
 358                 *passin = 0;
 359                 passin++;
 360                 if (app_passwd(passin, NULL, &passwd, NULL) == 0) {
 361                     BIO_printf(bio_err, "failed to get '%s'\n", opt);
 362                     goto end;
 363                 }
 364             }
 365
 366             if (EVP_PKEY_CTX_ctrl_str(ctx, opt, passwd) <= 0) {
 367                 BIO_printf(bio_err, "%s: Can't set parameter \"%s\":\n",
 368                            prog, opt);
 369                 goto end;
 370             }
 371             OPENSSL_free(passwd);
 372         }
 373     }
 374
 375     if (sigfile != NULL && (pkey_op != EVP_PKEY_OP_VERIFY)) {
 376         BIO_printf(bio_err,
 377                    "%s: Signature file specified for non verify\n", prog);
 378         goto end;
 379     }
 380
 381     if (sigfile == NULL && (pkey_op == EVP_PKEY_OP_VERIFY)) {
 382         BIO_printf(bio_err,
 383                    "%s: No signature file specified for verify\n", prog);
 384         goto end;
 385     }
 386
 387     if (pkey_op != EVP_PKEY_OP_DERIVE) {
 388         in = bio_open_default(infile, 'r', FORMAT_BINARY);
 389         if (infile != NULL) {
 390             struct stat st;
 391
 392             if (stat(infile, &st) == 0 && st.st_size <= INT_MAX)
 393                 filesize = (int)st.st_size;
 394         }
 395         if (in == NULL)
 396             goto end;
 397     }
 398     out = bio_open_default(outfile, 'w', FORMAT_BINARY);
 399     if (out == NULL)
 400         goto end;
 401
 402     if (sigfile != NULL) {
 403         BIO *sigbio = BIO_new_file(sigfile, "rb");
 404
 405         if (sigbio == NULL) {
 406             BIO_printf(bio_err, "Can't open signature file %s\n", sigfile);
 407             goto end;
 408         }
 409         siglen = bio_to_mem(&sig, keysize * 10, sigbio);
 410         BIO_free(sigbio);
 411         if (siglen < 0) {
 412             BIO_printf(bio_err, "Error reading signature data\n");
 413             goto end;
 414         }
 415     }
 416
 417     /* Raw input data is handled elsewhere */
 418     if (in != NULL && !rawin) {
 419         /* Read the input data */
 420         buf_inlen = bio_to_mem(&buf_in, keysize * 10, in);
 421         if (buf_inlen < 0) {
 422             BIO_printf(bio_err, "Error reading input Data\n");
 423             goto end;
 424         }
 425         if (rev) {
 426             size_t i;
 427             unsigned char ctmp;
 428             size_t l = (size_t)buf_inlen;
 429             for (i = 0; i < l / 2; i++) {
 430                 ctmp = buf_in[i];
 431                 buf_in[i] = buf_in[l - 1 - i];
 432                 buf_in[l - 1 - i] = ctmp;
 433             }
 434         }
 435     }
 436
 437     /* Sanity check the input if the input is not raw */
 438     if (!rawin
 439             && buf_inlen > EVP_MAX_MD_SIZE
 440             && (pkey_op == EVP_PKEY_OP_SIGN
 441                 || pkey_op == EVP_PKEY_OP_VERIFY)) {
 442         BIO_printf(bio_err,
 443                    "Error: The input data looks too long to be a hash\n");
 444         goto end;
 445     }
 446
 447     if (pkey_op == EVP_PKEY_OP_VERIFY) {
 448         if (rawin) {
 449             rv = do_raw_keyop(pkey_op, ctx, md, pkey, in, filesize, sig, siglen,
 450                               NULL, 0);
 451         } else {
 452             rv = EVP_PKEY_verify(ctx, sig, (size_t)siglen,
 453                                  buf_in, (size_t)buf_inlen);
 454         }
 455         if (rv == 1) {
 456             BIO_puts(out, "Signature Verified Successfully\n");
 457             ret = 0;
 458         } else {
 459             BIO_puts(out, "Signature Verification Failure\n");
 460         }
 461         goto end;
 462     }
 463     if (kdflen != 0) {
 464         buf_outlen = kdflen;
 465         rv = 1;
 466     } else {
 467         if (rawin) {
 468             /* rawin allocates the buffer in do_raw_keyop() */
 469             rv = do_raw_keyop(pkey_op, ctx, md, pkey, in, filesize, NULL, 0,
 470                               &buf_out, (size_t *)&buf_outlen);
 471         } else {
 472             rv = do_keyop(ctx, pkey_op, NULL, (size_t *)&buf_outlen,
 473                           buf_in, (size_t)buf_inlen);
 474             if (rv > 0 && buf_outlen != 0) {
 475                 buf_out = app_malloc(buf_outlen, "buffer output");
 476                 rv = do_keyop(ctx, pkey_op,
 477                               buf_out, (size_t *)&buf_outlen,
 478                               buf_in, (size_t)buf_inlen);
 479             }
 480         }
 481     }
 482     if (rv <= 0) {
 483         if (pkey_op != EVP_PKEY_OP_DERIVE) {
 484             BIO_puts(bio_err, "Public Key operation error\n");
 485         } else {
 486             BIO_puts(bio_err, "Key derivation failed\n");
 487         }
 488         ERR_print_errors(bio_err);
 489         goto end;
 490     }
 491     ret = 0;
 492
 493     if (asn1parse) {
 494         if (!ASN1_parse_dump(out, buf_out, buf_outlen, 1, -1))
 495             ERR_print_errors(bio_err);
 496     } else if (hexdump) {
 497         BIO_dump(out, (char *)buf_out, buf_outlen);
 498     } else {
 499         BIO_write(out, buf_out, buf_outlen);
 500     }
 501
 502  end:
 503     EVP_PKEY_CTX_free(ctx);
 504     release_engine(e);
 505     BIO_free(in);
 506     BIO_free_all(out);
 507     OPENSSL_free(buf_in);
 508     OPENSSL_free(buf_out);
 509     OPENSSL_free(sig);
 510     sk_OPENSSL_STRING_free(pkeyopts);
 511     sk_OPENSSL_STRING_free(pkeyopts_passin);
 512     NCONF_free(conf);
 513     return ret;
 514 }
 515
 516 static EVP_PKEY_CTX *init_ctx(const char *kdfalg, int *pkeysize,
 517                               const char *keyfile, int keyform, int key_type,
 518                               char *passinarg, int pkey_op, ENGINE *e,
 519                               const int engine_impl, int rawin,
 520                               EVP_PKEY **ppkey,
 521                               OSSL_LIB_CTX *libctx)
 522 {
 523     EVP_PKEY *pkey = NULL;
 524     EVP_PKEY_CTX *ctx = NULL;
 525     ENGINE *impl = NULL;
 526     char *passin = NULL;
 527     int rv = -1;
 528     X509 *x;
 529
 530     if (((pkey_op == EVP_PKEY_OP_SIGN) || (pkey_op == EVP_PKEY_OP_DECRYPT)
 531          || (pkey_op == EVP_PKEY_OP_DERIVE))
 532         && (key_type != KEY_PRIVKEY && kdfalg == NULL)) {
 533         BIO_printf(bio_err, "A private key is needed for this operation\n");
 534         goto end;
 535     }
 536     if (!app_passwd(passinarg, NULL, &passin, NULL)) {
 537         BIO_printf(bio_err, "Error getting password\n");
 538         goto end;
 539     }
 540     switch (key_type) {
 541     case KEY_PRIVKEY:
 542         pkey = load_key(keyfile, keyform, 0, passin, e, "private key");
 543         break;
 544
 545     case KEY_PUBKEY:
 546         pkey = load_pubkey(keyfile, keyform, 0, NULL, e, "public key");
 547         break;
 548
 549     case KEY_CERT:
 550         x = load_cert(keyfile, "Certificate");
 551         if (x) {
 552             pkey = X509_get_pubkey(x);
 553             X509_free(x);
 554         }
 555         break;
 556
 557     case KEY_NONE:
 558         break;
 559
 560     }
 561
 562 #ifndef OPENSSL_NO_ENGINE
 563     if (engine_impl)
 564         impl = e;
 565 #endif
 566
 567     if (kdfalg != NULL) {
 568         int kdfnid = OBJ_sn2nid(kdfalg);
 569
 570         if (kdfnid == NID_undef) {
 571             kdfnid = OBJ_ln2nid(kdfalg);
 572             if (kdfnid == NID_undef) {
 573                 BIO_printf(bio_err, "The given KDF \"%s\" is unknown.\n",
 574                            kdfalg);
 575                 goto end;
 576             }
 577         }
 578         if (impl != NULL)
 579             ctx = EVP_PKEY_CTX_new_id(kdfnid, impl);
 580         else
 581             ctx = EVP_PKEY_CTX_new_from_name(libctx, kdfalg, app_get0_propq());
 582     } else {
 583         if (pkey == NULL)
 584             goto end;
 585
 586         *pkeysize = EVP_PKEY_size(pkey);
 587         if (impl != NULL)
 588             ctx = EVP_PKEY_CTX_new(pkey, impl);
 589         else
 590             ctx = EVP_PKEY_CTX_new_from_pkey(libctx, pkey, app_get0_propq());
 591         if (ppkey != NULL)
 592             *ppkey = pkey;
 593         EVP_PKEY_free(pkey);
 594     }
 595
 596     if (ctx == NULL)
 597         goto end;
 598
 599     /*
 600      * If rawin then we don't need to actually initialise the EVP_PKEY_CTX
 601      * itself. That will get initialised during EVP_DigestSignInit or
 602      * EVP_DigestVerifyInit.
 603      */
 604     if (rawin) {
 605         rv = 1;
 606     } else {
 607         switch (pkey_op) {
 608         case EVP_PKEY_OP_SIGN:
 609             rv = EVP_PKEY_sign_init(ctx);
 610             break;
 611
 612         case EVP_PKEY_OP_VERIFY:
 613             rv = EVP_PKEY_verify_init(ctx);
 614             break;
 615
 616         case EVP_PKEY_OP_VERIFYRECOVER:
 617             rv = EVP_PKEY_verify_recover_init(ctx);
 618             break;
 619
 620         case EVP_PKEY_OP_ENCRYPT:
 621             rv = EVP_PKEY_encrypt_init(ctx);
 622             break;
 623
 624         case EVP_PKEY_OP_DECRYPT:
 625             rv = EVP_PKEY_decrypt_init(ctx);
 626             break;
 627
 628         case EVP_PKEY_OP_DERIVE:
 629             rv = EVP_PKEY_derive_init(ctx);
 630             break;
 631         }
 632     }
 633
 634     if (rv <= 0) {
 635         EVP_PKEY_CTX_free(ctx);
 636         ctx = NULL;
 637     }
 638
 639  end:
 640     OPENSSL_free(passin);
 641     return ctx;
 642
 643 }
 644
 645 static int setup_peer(EVP_PKEY_CTX *ctx, int peerform, const char *file,
 646                       ENGINE *e)
 647 {
 648     EVP_PKEY *peer = NULL;
 649     ENGINE *engine = NULL;
 650     int ret;
 651
 652     if (peerform == FORMAT_ENGINE)
 653         engine = e;
 654     peer = load_pubkey(file, peerform, 0, NULL, engine, "peer key");
 655     if (peer == NULL) {
 656         BIO_printf(bio_err, "Error reading peer key %s\n", file);
 657         ERR_print_errors(bio_err);
 658         return 0;
 659     }
 660
 661     ret = EVP_PKEY_derive_set_peer(ctx, peer);
 662
 663     EVP_PKEY_free(peer);
 664     if (ret <= 0)
 665         ERR_print_errors(bio_err);
 666     return ret;
 667 }
 668
 669 static int do_keyop(EVP_PKEY_CTX *ctx, int pkey_op,
 670                     unsigned char *out, size_t *poutlen,
 671                     const unsigned char *in, size_t inlen)
 672 {
 673     int rv = 0;
 674     switch (pkey_op) {
 675     case EVP_PKEY_OP_VERIFYRECOVER:
 676         rv = EVP_PKEY_verify_recover(ctx, out, poutlen, in, inlen);
 677         break;
 678
 679     case EVP_PKEY_OP_SIGN:
 680         rv = EVP_PKEY_sign(ctx, out, poutlen, in, inlen);
 681         break;
 682
 683     case EVP_PKEY_OP_ENCRYPT:
 684         rv = EVP_PKEY_encrypt(ctx, out, poutlen, in, inlen);
 685         break;
 686
 687     case EVP_PKEY_OP_DECRYPT:
 688         rv = EVP_PKEY_decrypt(ctx, out, poutlen, in, inlen);
 689         break;
 690
 691     case EVP_PKEY_OP_DERIVE:
 692         rv = EVP_PKEY_derive(ctx, out, poutlen);
 693         break;
 694
 695     }
 696     return rv;
 697 }
 698
 699 #define TBUF_MAXSIZE 2048
 700
 701 static int do_raw_keyop(int pkey_op, EVP_PKEY_CTX *ctx,
 702                         const EVP_MD *md, EVP_PKEY *pkey, BIO *in,
 703                         int filesize, unsigned char *sig, int siglen,
 704                         unsigned char **out, size_t *poutlen)
 705 {
 706     int rv = 0;
 707     EVP_MD_CTX *mctx = NULL;
 708     unsigned char tbuf[TBUF_MAXSIZE];
 709     unsigned char *mbuf = NULL;
 710     int buf_len = 0;
 711
 712     if ((mctx = EVP_MD_CTX_new()) == NULL) {
 713         BIO_printf(bio_err, "Error: out of memory\n");
 714         return rv;
 715     }
 716     EVP_MD_CTX_set_pkey_ctx(mctx, ctx);
 717
 718     /* Some algorithms only support oneshot digests */
 719     if (EVP_PKEY_id(pkey) == EVP_PKEY_ED25519
 720             || EVP_PKEY_id(pkey) == EVP_PKEY_ED448) {
 721         if (filesize < 0) {
 722             BIO_printf(bio_err,
 723                        "Error: unable to determine file size for oneshot operation\n");
 724             goto end;
 725         }
 726         mbuf = app_malloc(filesize, "oneshot sign/verify buffer");
 727         switch(pkey_op) {
 728         case EVP_PKEY_OP_VERIFY:
 729             if (EVP_DigestVerifyInit(mctx, NULL, md, NULL, pkey) != 1)
 730                 goto end;
 731             buf_len = BIO_read(in, mbuf, filesize);
 732             if (buf_len != filesize) {
 733                 BIO_printf(bio_err, "Error reading raw input data\n");
 734                 goto end;
 735             }
 736             rv = EVP_DigestVerify(mctx, sig, (size_t)siglen, mbuf, buf_len);
 737             break;
 738         case EVP_PKEY_OP_SIGN:
 739             if (EVP_DigestSignInit(mctx, NULL, md, NULL, pkey) != 1)
 740                 goto end;
 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         if (EVP_DigestVerifyInit(mctx, NULL, md, NULL, pkey) != 1)
 759             goto end;
 760         for (;;) {
 761             buf_len = BIO_read(in, tbuf, TBUF_MAXSIZE);
 762             if (buf_len == 0)
 763                 break;
 764             if (buf_len < 0) {
 765                 BIO_printf(bio_err, "Error reading raw input data\n");
 766                 goto end;
 767             }
 768             rv = EVP_DigestVerifyUpdate(mctx, tbuf, (size_t)buf_len);
 769             if (rv != 1) {
 770                 BIO_printf(bio_err, "Error verifying raw input data\n");
 771                 goto end;
 772             }
 773         }
 774         rv = EVP_DigestVerifyFinal(mctx, sig, (size_t)siglen);
 775         break;
 776     case EVP_PKEY_OP_SIGN:
 777         if (EVP_DigestSignInit(mctx, NULL, md, NULL, pkey) != 1)
 778             goto end;
 779         for (;;) {
 780             buf_len = BIO_read(in, tbuf, TBUF_MAXSIZE);
 781             if (buf_len == 0)
 782                 break;
 783             if (buf_len < 0) {
 784                 BIO_printf(bio_err, "Error reading raw input data\n");
 785                 goto end;
 786             }
 787             rv = EVP_DigestSignUpdate(mctx, tbuf, (size_t)buf_len);
 788             if (rv != 1) {
 789                 BIO_printf(bio_err, "Error signing raw input data\n");
 790                 goto end;
 791             }
 792         }
 793         rv = EVP_DigestSignFinal(mctx, NULL, poutlen);
 794         if (rv == 1 && out != NULL) {
 795             *out = app_malloc(*poutlen, "buffer output");
 796             rv = EVP_DigestSignFinal(mctx, *out, poutlen);
 797         }
 798         break;
 799     }
 800
 801  end:
 802     OPENSSL_free(mbuf);
 803     EVP_MD_CTX_free(mctx);
 804     return rv;
 805 }