apps/pkeyutl.c

   1 /*
   2  * Copyright 2006-2018 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
  28 static int setup_peer(EVP_PKEY_CTX *ctx, int peerform, const char *file,
  29                       ENGINE *e);
  30
  31 static int do_keyop(EVP_PKEY_CTX *ctx, int pkey_op,
  32                     unsigned char *out, size_t *poutlen,
  33                     const unsigned char *in, size_t inlen);
  34
  35 static int do_raw_keyop(int pkey_op, EVP_PKEY_CTX *ctx,
  36                         const EVP_MD *md, EVP_PKEY *pkey, BIO *in,
  37                         int filesize, unsigned char *sig, int siglen,
  38                         unsigned char **out, size_t *poutlen);
  39
  40 typedef enum OPTION_choice {
  41     OPT_ERR = -1, OPT_EOF = 0, OPT_HELP,
  42     OPT_ENGINE, OPT_ENGINE_IMPL, OPT_IN, OPT_OUT,
  43     OPT_PUBIN, OPT_CERTIN, OPT_ASN1PARSE, OPT_HEXDUMP, OPT_SIGN,
  44     OPT_VERIFY, OPT_VERIFYRECOVER, OPT_REV, OPT_ENCRYPT, OPT_DECRYPT,
  45     OPT_DERIVE, OPT_SIGFILE, OPT_INKEY, OPT_PEERKEY, OPT_PASSIN,
  46     OPT_PEERFORM, OPT_KEYFORM, OPT_PKEYOPT, OPT_PKEYOPT_PASSIN, OPT_KDF,
  47     OPT_KDFLEN, OPT_R_ENUM,
  48     OPT_RAWIN, OPT_DIGEST
  49 } OPTION_CHOICE;
  50
  51 const OPTIONS pkeyutl_options[] = {
  52     OPT_SECTION("General"),
  53     {"help", OPT_HELP, '-', "Display this summary"},
  54 #ifndef OPENSSL_NO_ENGINE
  55     {"engine", OPT_ENGINE, 's', "Use engine, possibly a hardware device"},
  56     {"engine_impl", OPT_ENGINE_IMPL, '-',
  57      "Also use engine given by -engine for crypto operations"},
  58 #endif
  59     {"sign", OPT_SIGN, '-', "Sign input data with private key"},
  60     {"verify", OPT_VERIFY, '-', "Verify with public key"},
  61     {"encrypt", OPT_ENCRYPT, '-', "Encrypt input data with public key"},
  62     {"decrypt", OPT_DECRYPT, '-', "Decrypt input data with private key"},
  63     {"derive", OPT_DERIVE, '-', "Derive shared secret"},
  64
  65     OPT_SECTION("Input"),
  66     {"in", OPT_IN, '<', "Input file - default stdin"},
  67     {"rawin", OPT_RAWIN, '-', "Indicate the input data is in raw form"},
  68     {"pubin", OPT_PUBIN, '-', "Input is a public key"},
  69     {"inkey", OPT_INKEY, 's', "Input private key file"},
  70     {"passin", OPT_PASSIN, 's', "Input file pass phrase source"},
  71     {"peerkey", OPT_PEERKEY, 's', "Peer key file used in key derivation"},
  72     {"peerform", OPT_PEERFORM, 'E', "Peer key format - default PEM"},
  73     {"certin", OPT_CERTIN, '-', "Input is a cert with a public key"},
  74     {"rev", OPT_REV, '-', "Reverse the order of the input buffer"},
  75     {"sigfile", OPT_SIGFILE, '<', "Signature file (verify operation only)"},
  76     {"keyform", OPT_KEYFORM, 'E', "Private key format - default PEM"},
  77
  78     OPT_SECTION("Output"),
  79     {"out", OPT_OUT, '>', "Output file - default stdout"},
  80     {"asn1parse", OPT_ASN1PARSE, '-', "asn1parse the output data"},
  81     {"hexdump", OPT_HEXDUMP, '-', "Hex dump output"},
  82     {"verifyrecover", OPT_VERIFYRECOVER, '-',
  83      "Verify with public key, recover original data"},
  84
  85     OPT_SECTION("Signing/Derivation"),
  86     {"digest", OPT_DIGEST, 's',
  87      "Specify the digest algorithm when signing the raw input data"},
  88     {"pkeyopt", OPT_PKEYOPT, 's', "Public key options as opt:value"},
  89     {"pkeyopt_passin", OPT_PKEYOPT_PASSIN, 's',
  90      "Public key option that is read as a passphrase argument opt:passphrase"},
  91     {"kdf", OPT_KDF, 's', "Use KDF algorithm"},
  92     {"kdflen", OPT_KDFLEN, 'p', "KDF algorithm output length"},
  93
  94     OPT_R_OPTIONS,
  95     {NULL}
  96 };
  97
  98 int pkeyutl_main(int argc, char **argv)
  99 {
 100     BIO *in = NULL, *out = NULL;
 101     ENGINE *e = NULL;
 102     EVP_PKEY_CTX *ctx = NULL;
 103     EVP_PKEY *pkey = NULL;
 104     char *infile = NULL, *outfile = NULL, *sigfile = NULL, *passinarg = NULL;
 105     char hexdump = 0, asn1parse = 0, rev = 0, *prog;
 106     unsigned char *buf_in = NULL, *buf_out = NULL, *sig = NULL;
 107     OPTION_CHOICE o;
 108     int buf_inlen = 0, siglen = -1, keyform = FORMAT_PEM, peerform = FORMAT_PEM;
 109     int keysize = -1, pkey_op = EVP_PKEY_OP_SIGN, key_type = KEY_PRIVKEY;
 110     int engine_impl = 0;
 111     int ret = 1, rv = -1;
 112     size_t buf_outlen;
 113     const char *inkey = NULL;
 114     const char *peerkey = NULL;
 115     const char *kdfalg = NULL;
 116     int kdflen = 0;
 117     STACK_OF(OPENSSL_STRING) *pkeyopts = NULL;
 118     STACK_OF(OPENSSL_STRING) *pkeyopts_passin = NULL;
 119     int rawin = 0;
 120     const EVP_MD *md = NULL;
 121     int filesize = -1;
 122
 123     prog = opt_init(argc, argv, pkeyutl_options);
 124     while ((o = opt_next()) != OPT_EOF) {
 125         switch (o) {
 126         case OPT_EOF:
 127         case OPT_ERR:
 128  opthelp:
 129             BIO_printf(bio_err, "%s: Use -help for summary.\n", prog);
 130             goto end;
 131         case OPT_HELP:
 132             opt_help(pkeyutl_options);
 133             ret = 0;
 134             goto end;
 135         case OPT_IN:
 136             infile = opt_arg();
 137             break;
 138         case OPT_OUT:
 139             outfile = opt_arg();
 140             break;
 141         case OPT_SIGFILE:
 142             sigfile = opt_arg();
 143             break;
 144         case OPT_ENGINE_IMPL:
 145             engine_impl = 1;
 146             break;
 147         case OPT_INKEY:
 148             inkey = opt_arg();
 149             break;
 150         case OPT_PEERKEY:
 151             peerkey = opt_arg();
 152             break;
 153         case OPT_PASSIN:
 154             passinarg = opt_arg();
 155             break;
 156         case OPT_PEERFORM:
 157             if (!opt_format(opt_arg(), OPT_FMT_PDE, &peerform))
 158                 goto opthelp;
 159             break;
 160         case OPT_KEYFORM:
 161             if (!opt_format(opt_arg(), OPT_FMT_PDE, &keyform))
 162                 goto opthelp;
 163             break;
 164         case OPT_R_CASES:
 165             if (!opt_rand(o))
 166                 goto end;
 167             break;
 168         case OPT_ENGINE:
 169             e = setup_engine(opt_arg(), 0);
 170             break;
 171         case OPT_PUBIN:
 172             key_type = KEY_PUBKEY;
 173             break;
 174         case OPT_CERTIN:
 175             key_type = KEY_CERT;
 176             break;
 177         case OPT_ASN1PARSE:
 178             asn1parse = 1;
 179             break;
 180         case OPT_HEXDUMP:
 181             hexdump = 1;
 182             break;
 183         case OPT_SIGN:
 184             pkey_op = EVP_PKEY_OP_SIGN;
 185             break;
 186         case OPT_VERIFY:
 187             pkey_op = EVP_PKEY_OP_VERIFY;
 188             break;
 189         case OPT_VERIFYRECOVER:
 190             pkey_op = EVP_PKEY_OP_VERIFYRECOVER;
 191             break;
 192         case OPT_ENCRYPT:
 193             pkey_op = EVP_PKEY_OP_ENCRYPT;
 194             break;
 195         case OPT_DECRYPT:
 196             pkey_op = EVP_PKEY_OP_DECRYPT;
 197             break;
 198         case OPT_DERIVE:
 199             pkey_op = EVP_PKEY_OP_DERIVE;
 200             break;
 201         case OPT_KDF:
 202             pkey_op = EVP_PKEY_OP_DERIVE;
 203             key_type = KEY_NONE;
 204             kdfalg = opt_arg();
 205             break;
 206         case OPT_KDFLEN:
 207             kdflen = atoi(opt_arg());
 208             break;
 209         case OPT_REV:
 210             rev = 1;
 211             break;
 212         case OPT_PKEYOPT:
 213             if ((pkeyopts == NULL &&
 214                  (pkeyopts = sk_OPENSSL_STRING_new_null()) == NULL) ||
 215                 sk_OPENSSL_STRING_push(pkeyopts, opt_arg()) == 0) {
 216                 BIO_puts(bio_err, "out of memory\n");
 217                 goto end;
 218             }
 219             break;
 220         case OPT_PKEYOPT_PASSIN:
 221             if ((pkeyopts_passin == NULL &&
 222                  (pkeyopts_passin = sk_OPENSSL_STRING_new_null()) == NULL) ||
 223                 sk_OPENSSL_STRING_push(pkeyopts_passin, opt_arg()) == 0) {
 224                 BIO_puts(bio_err, "out of memory\n");
 225                 goto end;
 226             }
 227             break;
 228         case OPT_RAWIN:
 229             rawin = 1;
 230             break;
 231         case OPT_DIGEST:
 232             if (!opt_md(opt_arg(), &md))
 233                 goto end;
 234             break;
 235         }
 236     }
 237     argc = opt_num_rest();
 238     if (argc != 0)
 239         goto opthelp;
 240
 241     if (rawin && pkey_op != EVP_PKEY_OP_SIGN && pkey_op != EVP_PKEY_OP_VERIFY) {
 242         BIO_printf(bio_err,
 243                    "%s: -rawin can only be used with -sign or -verify\n",
 244                    prog);
 245         goto opthelp;
 246     }
 247
 248     if (md != NULL && !rawin) {
 249         BIO_printf(bio_err,
 250                    "%s: -digest can only be used with -rawin\n",
 251                    prog);
 252         goto opthelp;
 253     }
 254
 255     if (rawin && rev) {
 256         BIO_printf(bio_err, "%s: -rev cannot be used with raw input\n",
 257                    prog);
 258         goto opthelp;
 259     }
 260
 261     if (kdfalg != NULL) {
 262         if (kdflen == 0) {
 263             BIO_printf(bio_err,
 264                        "%s: no KDF length given (-kdflen parameter).\n", prog);
 265             goto opthelp;
 266         }
 267     } else if (inkey == NULL) {
 268         BIO_printf(bio_err,
 269                    "%s: no private key given (-inkey parameter).\n", prog);
 270         goto opthelp;
 271     } else if (peerkey != NULL && pkey_op != EVP_PKEY_OP_DERIVE) {
 272         BIO_printf(bio_err,
 273                    "%s: no peer key given (-peerkey parameter).\n", prog);
 274         goto opthelp;
 275     }
 276     ctx = init_ctx(kdfalg, &keysize, inkey, keyform, key_type,
 277                    passinarg, pkey_op, e, engine_impl, rawin, &pkey);
 278     if (ctx == NULL) {
 279         BIO_printf(bio_err, "%s: Error initializing context\n", prog);
 280         ERR_print_errors(bio_err);
 281         goto end;
 282     }
 283     if (peerkey != NULL && !setup_peer(ctx, peerform, peerkey, e)) {
 284         BIO_printf(bio_err, "%s: Error setting up peer key\n", prog);
 285         ERR_print_errors(bio_err);
 286         goto end;
 287     }
 288     if (pkeyopts != NULL) {
 289         int num = sk_OPENSSL_STRING_num(pkeyopts);
 290         int i;
 291
 292         for (i = 0; i < num; ++i) {
 293             const char *opt = sk_OPENSSL_STRING_value(pkeyopts, i);
 294
 295             if (pkey_ctrl_string(ctx, opt) <= 0) {
 296                 BIO_printf(bio_err, "%s: Can't set parameter \"%s\":\n",
 297                            prog, opt);
 298                 ERR_print_errors(bio_err);
 299                 goto end;
 300             }
 301         }
 302     }
 303     if (pkeyopts_passin != NULL) {
 304         int num = sk_OPENSSL_STRING_num(pkeyopts_passin);
 305         int i;
 306
 307         for (i = 0; i < num; i++) {
 308             char *opt = sk_OPENSSL_STRING_value(pkeyopts_passin, i);
 309             char *passin = strchr(opt, ':');
 310             char *passwd;
 311
 312             if (passin == NULL) {
 313                 /* Get password interactively */
 314                 char passwd_buf[4096];
 315                 BIO_snprintf(passwd_buf, sizeof(passwd_buf), "Enter %s: ", opt);
 316                 EVP_read_pw_string(passwd_buf, sizeof(passwd_buf) - 1,
 317                                    passwd_buf, 0);
 318                 passwd = OPENSSL_strdup(passwd_buf);
 319                 if (passwd == NULL) {
 320                     BIO_puts(bio_err, "out of memory\n");
 321                     goto end;
 322                 }
 323             } else {
 324                 /* Get password as a passin argument: First split option name
 325                  * and passphrase argument into two strings */
 326                 *passin = 0;
 327                 passin++;
 328                 if (app_passwd(passin, NULL, &passwd, NULL) == 0) {
 329                     BIO_printf(bio_err, "failed to get '%s'\n", opt);
 330                     goto end;
 331                 }
 332             }
 333
 334             if (EVP_PKEY_CTX_ctrl_str(ctx, opt, passwd) <= 0) {
 335                 BIO_printf(bio_err, "%s: Can't set parameter \"%s\":\n",
 336                            prog, opt);
 337                 goto end;
 338             }
 339             OPENSSL_free(passwd);
 340         }
 341     }
 342
 343     if (sigfile != NULL && (pkey_op != EVP_PKEY_OP_VERIFY)) {
 344         BIO_printf(bio_err,
 345                    "%s: Signature file specified for non verify\n", prog);
 346         goto end;
 347     }
 348
 349     if (sigfile == NULL && (pkey_op == EVP_PKEY_OP_VERIFY)) {
 350         BIO_printf(bio_err,
 351                    "%s: No signature file specified for verify\n", prog);
 352         goto end;
 353     }
 354
 355     if (pkey_op != EVP_PKEY_OP_DERIVE) {
 356         in = bio_open_default(infile, 'r', FORMAT_BINARY);
 357         if (infile != NULL) {
 358             struct stat st;
 359
 360             if (stat(infile, &st) == 0 && st.st_size <= INT_MAX)
 361                 filesize = (int)st.st_size;
 362         }
 363         if (in == NULL)
 364             goto end;
 365     }
 366     out = bio_open_default(outfile, 'w', FORMAT_BINARY);
 367     if (out == NULL)
 368         goto end;
 369
 370     if (sigfile != NULL) {
 371         BIO *sigbio = BIO_new_file(sigfile, "rb");
 372
 373         if (sigbio == NULL) {
 374             BIO_printf(bio_err, "Can't open signature file %s\n", sigfile);
 375             goto end;
 376         }
 377         siglen = bio_to_mem(&sig, keysize * 10, sigbio);
 378         BIO_free(sigbio);
 379         if (siglen < 0) {
 380             BIO_printf(bio_err, "Error reading signature data\n");
 381             goto end;
 382         }
 383     }
 384
 385     /* Raw input data is handled elsewhere */
 386     if (in != NULL && !rawin) {
 387         /* Read the input data */
 388         buf_inlen = bio_to_mem(&buf_in, keysize * 10, in);
 389         if (buf_inlen < 0) {
 390             BIO_printf(bio_err, "Error reading input Data\n");
 391             goto end;
 392         }
 393         if (rev) {
 394             size_t i;
 395             unsigned char ctmp;
 396             size_t l = (size_t)buf_inlen;
 397             for (i = 0; i < l / 2; i++) {
 398                 ctmp = buf_in[i];
 399                 buf_in[i] = buf_in[l - 1 - i];
 400                 buf_in[l - 1 - i] = ctmp;
 401             }
 402         }
 403     }
 404
 405     /* Sanity check the input if the input is not raw */
 406     if (!rawin
 407             && buf_inlen > EVP_MAX_MD_SIZE
 408             && (pkey_op == EVP_PKEY_OP_SIGN
 409                 || pkey_op == EVP_PKEY_OP_VERIFY)) {
 410         BIO_printf(bio_err,
 411                    "Error: The input data looks too long to be a hash\n");
 412         goto end;
 413     }
 414
 415     if (pkey_op == EVP_PKEY_OP_VERIFY) {
 416         if (rawin) {
 417             rv = do_raw_keyop(pkey_op, ctx, md, pkey, in, filesize, sig, siglen,
 418                               NULL, 0);
 419         } else {
 420             rv = EVP_PKEY_verify(ctx, sig, (size_t)siglen,
 421                                  buf_in, (size_t)buf_inlen);
 422         }
 423         if (rv == 1) {
 424             BIO_puts(out, "Signature Verified Successfully\n");
 425             ret = 0;
 426         } else {
 427             BIO_puts(out, "Signature Verification Failure\n");
 428         }
 429         goto end;
 430     }
 431     if (kdflen != 0) {
 432         buf_outlen = kdflen;
 433         rv = 1;
 434     } else {
 435         if (rawin) {
 436             /* rawin allocates the buffer in do_raw_keyop() */
 437             rv = do_raw_keyop(pkey_op, ctx, md, pkey, in, filesize, NULL, 0,
 438                               &buf_out, (size_t *)&buf_outlen);
 439         } else {
 440             rv = do_keyop(ctx, pkey_op, NULL, (size_t *)&buf_outlen,
 441                           buf_in, (size_t)buf_inlen);
 442             if (rv > 0 && buf_outlen != 0) {
 443                 buf_out = app_malloc(buf_outlen, "buffer output");
 444                 rv = do_keyop(ctx, pkey_op,
 445                               buf_out, (size_t *)&buf_outlen,
 446                               buf_in, (size_t)buf_inlen);
 447             }
 448         }
 449     }
 450     if (rv <= 0) {
 451         if (pkey_op != EVP_PKEY_OP_DERIVE) {
 452             BIO_puts(bio_err, "Public Key operation error\n");
 453         } else {
 454             BIO_puts(bio_err, "Key derivation failed\n");
 455         }
 456         ERR_print_errors(bio_err);
 457         goto end;
 458     }
 459     ret = 0;
 460
 461     if (asn1parse) {
 462         if (!ASN1_parse_dump(out, buf_out, buf_outlen, 1, -1))
 463             ERR_print_errors(bio_err);
 464     } else if (hexdump) {
 465         BIO_dump(out, (char *)buf_out, buf_outlen);
 466     } else {
 467         BIO_write(out, buf_out, buf_outlen);
 468     }
 469
 470  end:
 471     EVP_PKEY_CTX_free(ctx);
 472     release_engine(e);
 473     BIO_free(in);
 474     BIO_free_all(out);
 475     OPENSSL_free(buf_in);
 476     OPENSSL_free(buf_out);
 477     OPENSSL_free(sig);
 478     sk_OPENSSL_STRING_free(pkeyopts);
 479     sk_OPENSSL_STRING_free(pkeyopts_passin);
 480     return ret;
 481 }
 482
 483 static EVP_PKEY_CTX *init_ctx(const char *kdfalg, int *pkeysize,
 484                               const char *keyfile, int keyform, int key_type,
 485                               char *passinarg, int pkey_op, ENGINE *e,
 486                               const int engine_impl, int rawin,
 487                               EVP_PKEY **ppkey)
 488 {
 489     EVP_PKEY *pkey = NULL;
 490     EVP_PKEY_CTX *ctx = NULL;
 491     ENGINE *impl = NULL;
 492     char *passin = NULL;
 493     int rv = -1;
 494     X509 *x;
 495     if (((pkey_op == EVP_PKEY_OP_SIGN) || (pkey_op == EVP_PKEY_OP_DECRYPT)
 496          || (pkey_op == EVP_PKEY_OP_DERIVE))
 497         && (key_type != KEY_PRIVKEY && kdfalg == NULL)) {
 498         BIO_printf(bio_err, "A private key is needed for this operation\n");
 499         goto end;
 500     }
 501     if (!app_passwd(passinarg, NULL, &passin, NULL)) {
 502         BIO_printf(bio_err, "Error getting password\n");
 503         goto end;
 504     }
 505     switch (key_type) {
 506     case KEY_PRIVKEY:
 507         pkey = load_key(keyfile, keyform, 0, passin, e, "Private Key");
 508         break;
 509
 510     case KEY_PUBKEY:
 511         pkey = load_pubkey(keyfile, keyform, 0, NULL, e, "Public Key");
 512         break;
 513
 514     case KEY_CERT:
 515         x = load_cert(keyfile, keyform, "Certificate");
 516         if (x) {
 517             pkey = X509_get_pubkey(x);
 518             X509_free(x);
 519         }
 520         break;
 521
 522     case KEY_NONE:
 523         break;
 524
 525     }
 526
 527 #ifndef OPENSSL_NO_ENGINE
 528     if (engine_impl)
 529         impl = e;
 530 #endif
 531
 532     if (kdfalg != NULL) {
 533         int kdfnid = OBJ_sn2nid(kdfalg);
 534
 535         if (kdfnid == NID_undef) {
 536             kdfnid = OBJ_ln2nid(kdfalg);
 537             if (kdfnid == NID_undef) {
 538                 BIO_printf(bio_err, "The given KDF \"%s\" is unknown.\n",
 539                            kdfalg);
 540                 goto end;
 541             }
 542         }
 543         ctx = EVP_PKEY_CTX_new_id(kdfnid, impl);
 544     } else {
 545         if (pkey == NULL)
 546             goto end;
 547
 548 #ifndef OPENSSL_NO_EC
 549         /* SM2 needs a special treatment */
 550         if (EVP_PKEY_id(pkey) == EVP_PKEY_EC) {
 551             EC_KEY *eckey = NULL;
 552             const EC_GROUP *group = NULL;
 553             int nid;
 554
 555             if ((eckey = EVP_PKEY_get0_EC_KEY(pkey)) == NULL
 556                     || (group = EC_KEY_get0_group(eckey)) == NULL
 557                     || (nid = EC_GROUP_get_curve_name(group)) == 0)
 558                 goto end;
 559             if (nid == NID_sm2
 560                     && !EVP_PKEY_set_alias_type(pkey, EVP_PKEY_SM2))
 561                 goto end;
 562         }
 563 #endif
 564         *pkeysize = EVP_PKEY_size(pkey);
 565         ctx = EVP_PKEY_CTX_new(pkey, impl);
 566         if (ppkey != NULL)
 567             *ppkey = pkey;
 568         EVP_PKEY_free(pkey);
 569     }
 570
 571     if (ctx == NULL)
 572         goto end;
 573
 574     /*
 575      * If rawin then we don't need to actually initialise the EVP_PKEY_CTX
 576      * itself. That will get initialised during EVP_DigestSignInit or
 577      * EVP_DigestVerifyInit.
 578      */
 579     if (rawin) {
 580         rv = 1;
 581     } else {
 582         switch (pkey_op) {
 583         case EVP_PKEY_OP_SIGN:
 584             rv = EVP_PKEY_sign_init(ctx);
 585             break;
 586
 587         case EVP_PKEY_OP_VERIFY:
 588             rv = EVP_PKEY_verify_init(ctx);
 589             break;
 590
 591         case EVP_PKEY_OP_VERIFYRECOVER:
 592             rv = EVP_PKEY_verify_recover_init(ctx);
 593             break;
 594
 595         case EVP_PKEY_OP_ENCRYPT:
 596             rv = EVP_PKEY_encrypt_init(ctx);
 597             break;
 598
 599         case EVP_PKEY_OP_DECRYPT:
 600             rv = EVP_PKEY_decrypt_init(ctx);
 601             break;
 602
 603         case EVP_PKEY_OP_DERIVE:
 604             rv = EVP_PKEY_derive_init(ctx);
 605             break;
 606         }
 607     }
 608
 609     if (rv <= 0) {
 610         EVP_PKEY_CTX_free(ctx);
 611         ctx = NULL;
 612     }
 613
 614  end:
 615     OPENSSL_free(passin);
 616     return ctx;
 617
 618 }
 619
 620 static int setup_peer(EVP_PKEY_CTX *ctx, int peerform, const char *file,
 621                       ENGINE *e)
 622 {
 623     EVP_PKEY *peer = NULL;
 624     ENGINE *engine = NULL;
 625     int ret;
 626
 627     if (peerform == FORMAT_ENGINE)
 628         engine = e;
 629     peer = load_pubkey(file, peerform, 0, NULL, engine, "Peer Key");
 630     if (peer == NULL) {
 631         BIO_printf(bio_err, "Error reading peer key %s\n", file);
 632         ERR_print_errors(bio_err);
 633         return 0;
 634     }
 635
 636     ret = EVP_PKEY_derive_set_peer(ctx, peer);
 637
 638     EVP_PKEY_free(peer);
 639     if (ret <= 0)
 640         ERR_print_errors(bio_err);
 641     return ret;
 642 }
 643
 644 static int do_keyop(EVP_PKEY_CTX *ctx, int pkey_op,
 645                     unsigned char *out, size_t *poutlen,
 646                     const unsigned char *in, size_t inlen)
 647 {
 648     int rv = 0;
 649     switch (pkey_op) {
 650     case EVP_PKEY_OP_VERIFYRECOVER:
 651         rv = EVP_PKEY_verify_recover(ctx, out, poutlen, in, inlen);
 652         break;
 653
 654     case EVP_PKEY_OP_SIGN:
 655         rv = EVP_PKEY_sign(ctx, out, poutlen, in, inlen);
 656         break;
 657
 658     case EVP_PKEY_OP_ENCRYPT:
 659         rv = EVP_PKEY_encrypt(ctx, out, poutlen, in, inlen);
 660         break;
 661
 662     case EVP_PKEY_OP_DECRYPT:
 663         rv = EVP_PKEY_decrypt(ctx, out, poutlen, in, inlen);
 664         break;
 665
 666     case EVP_PKEY_OP_DERIVE:
 667         rv = EVP_PKEY_derive(ctx, out, poutlen);
 668         break;
 669
 670     }
 671     return rv;
 672 }
 673
 674 #define TBUF_MAXSIZE 2048
 675
 676 static int do_raw_keyop(int pkey_op, EVP_PKEY_CTX *ctx,
 677                         const EVP_MD *md, EVP_PKEY *pkey, BIO *in,
 678                         int filesize, unsigned char *sig, int siglen,
 679                         unsigned char **out, size_t *poutlen)
 680 {
 681     int rv = 0;
 682     EVP_MD_CTX *mctx = NULL;
 683     unsigned char tbuf[TBUF_MAXSIZE];
 684     unsigned char *mbuf = NULL;
 685     int buf_len = 0;
 686
 687     if ((mctx = EVP_MD_CTX_new()) == NULL) {
 688         BIO_printf(bio_err, "Error: out of memory\n");
 689         return rv;
 690     }
 691     EVP_MD_CTX_set_pkey_ctx(mctx, ctx);
 692
 693     /* Some algorithms only support oneshot digests */
 694     if (EVP_PKEY_id(pkey) == EVP_PKEY_ED25519
 695             || EVP_PKEY_id(pkey) == EVP_PKEY_ED448) {
 696         if (filesize < 0) {
 697             BIO_printf(bio_err,
 698                        "Error: unable to determine file size for oneshot operation\n");
 699             goto end;
 700         }
 701         mbuf = app_malloc(filesize, "oneshot sign/verify buffer");
 702         switch(pkey_op) {
 703         case EVP_PKEY_OP_VERIFY:
 704             if (EVP_DigestVerifyInit(mctx, NULL, md, NULL, pkey) != 1)
 705                 goto end;
 706             buf_len = BIO_read(in, mbuf, filesize);
 707             if (buf_len != filesize) {
 708                 BIO_printf(bio_err, "Error reading raw input data\n");
 709                 goto end;
 710             }
 711             rv = EVP_DigestVerify(mctx, sig, (size_t)siglen, mbuf, buf_len);
 712             break;
 713         case EVP_PKEY_OP_SIGN:
 714             if (EVP_DigestSignInit(mctx, NULL, md, NULL, pkey) != 1)
 715                 goto end;
 716             buf_len = BIO_read(in, mbuf, filesize);
 717             if (buf_len != filesize) {
 718                 BIO_printf(bio_err, "Error reading raw input data\n");
 719                 goto end;
 720             }
 721             rv = EVP_DigestSign(mctx, NULL, poutlen, mbuf, buf_len);
 722             if (rv == 1 && out != NULL) {
 723                 *out = app_malloc(*poutlen, "buffer output");
 724                 rv = EVP_DigestSign(mctx, *out, poutlen, mbuf, buf_len);
 725             }
 726             break;
 727         }
 728         goto end;
 729     }
 730
 731     switch(pkey_op) {
 732     case EVP_PKEY_OP_VERIFY:
 733         if (EVP_DigestVerifyInit(mctx, NULL, md, NULL, pkey) != 1)
 734             goto end;
 735         for (;;) {
 736             buf_len = BIO_read(in, tbuf, TBUF_MAXSIZE);
 737             if (buf_len == 0)
 738                 break;
 739             if (buf_len < 0) {
 740                 BIO_printf(bio_err, "Error reading raw input data\n");
 741                 goto end;
 742             }
 743             rv = EVP_DigestVerifyUpdate(mctx, tbuf, (size_t)buf_len);
 744             if (rv != 1) {
 745                 BIO_printf(bio_err, "Error verifying raw input data\n");
 746                 goto end;
 747             }
 748         }
 749         rv = EVP_DigestVerifyFinal(mctx, sig, (size_t)siglen);
 750         break;
 751     case EVP_PKEY_OP_SIGN:
 752         if (EVP_DigestSignInit(mctx, NULL, md, NULL, pkey) != 1)
 753             goto end;
 754         for (;;) {
 755             buf_len = BIO_read(in, tbuf, TBUF_MAXSIZE);
 756             if (buf_len == 0)
 757                 break;
 758             if (buf_len < 0) {
 759                 BIO_printf(bio_err, "Error reading raw input data\n");
 760                 goto end;
 761             }
 762             rv = EVP_DigestSignUpdate(mctx, tbuf, (size_t)buf_len);
 763             if (rv != 1) {
 764                 BIO_printf(bio_err, "Error signing raw input data\n");
 765                 goto end;
 766             }
 767         }
 768         rv = EVP_DigestSignFinal(mctx, NULL, poutlen);
 769         if (rv == 1 && out != NULL) {
 770             *out = app_malloc(*poutlen, "buffer output");
 771             rv = EVP_DigestSignFinal(mctx, *out, poutlen);
 772         }
 773         break;
 774     }
 775
 776  end:
 777     OPENSSL_free(mbuf);
 778     EVP_MD_CTX_free(mctx);
 779     return rv;
 780 }