| 1 | /*
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| 2 | * Copyright 2006-2021 The OpenSSL Project Authors. All Rights Reserved.
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| 3 | *
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| 4 | * Licensed under the Apache License 2.0 (the "License"). You may not use
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| 5 | * this file except in compliance with the License. You can obtain a copy
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| 6 | * in the file LICENSE in the source distribution or at
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| 7 | * https://www.openssl.org/source/license.html
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| 8 | */
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| 9 |
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| 10 | #include <stdio.h>
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| 11 | #include <string.h>
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| 12 | #include <stdlib.h>
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| 13 | #include "apps.h"
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| 14 | #include "progs.h"
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| 15 | #include <openssl/pem.h>
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| 16 | #include <openssl/err.h>
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| 17 | #include <openssl/evp.h>
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| 18 |
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| 19 | typedef enum OPTION_choice {
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| 20 | OPT_COMMON,
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| 21 | OPT_IN, OPT_OUT, OPT_TEXT, OPT_NOOUT,
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| 22 | OPT_ENGINE, OPT_CHECK,
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| 23 | OPT_PROV_ENUM
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| 24 | } OPTION_CHOICE;
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| 25 |
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| 26 | const OPTIONS pkeyparam_options[] = {
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| 27 | OPT_SECTION("General"),
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| 28 | {"help", OPT_HELP, '-', "Display this summary"},
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| 29 | #ifndef OPENSSL_NO_ENGINE
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| 30 | {"engine", OPT_ENGINE, 's', "Use engine, possibly a hardware device"},
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| 31 | #endif
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| 32 | {"check", OPT_CHECK, '-', "Check key param consistency"},
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| 33 |
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| 34 | OPT_SECTION("Input"),
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| 35 | {"in", OPT_IN, '<', "Input file"},
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| 36 |
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| 37 | OPT_SECTION("Output"),
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| 38 | {"out", OPT_OUT, '>', "Output file"},
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| 39 | {"text", OPT_TEXT, '-', "Print parameters as text"},
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| 40 | {"noout", OPT_NOOUT, '-', "Don't output encoded parameters"},
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| 41 |
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| 42 | OPT_PROV_OPTIONS,
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| 43 | {NULL}
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| 44 | };
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| 45 |
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| 46 | int pkeyparam_main(int argc, char **argv)
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| 47 | {
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| 48 | ENGINE *e = NULL;
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| 49 | BIO *in = NULL, *out = NULL;
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| 50 | EVP_PKEY *pkey = NULL;
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| 51 | EVP_PKEY_CTX *ctx = NULL;
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| 52 | int text = 0, noout = 0, ret = EXIT_FAILURE, check = 0, r;
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| 53 | OPTION_CHOICE o;
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| 54 | char *infile = NULL, *outfile = NULL, *prog;
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| 55 |
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| 56 | prog = opt_init(argc, argv, pkeyparam_options);
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| 57 | while ((o = opt_next()) != OPT_EOF) {
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| 58 | switch (o) {
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| 59 | case OPT_EOF:
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| 60 | case OPT_ERR:
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| 61 | opthelp:
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| 62 | BIO_printf(bio_err, "%s: Use -help for summary.\n", prog);
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| 63 | goto end;
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| 64 | case OPT_HELP:
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| 65 | opt_help(pkeyparam_options);
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| 66 | ret = 0;
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| 67 | goto end;
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| 68 | case OPT_IN:
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| 69 | infile = opt_arg();
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| 70 | break;
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| 71 | case OPT_OUT:
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| 72 | outfile = opt_arg();
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| 73 | break;
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| 74 | case OPT_ENGINE:
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| 75 | e = setup_engine(opt_arg(), 0);
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| 76 | break;
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| 77 | case OPT_TEXT:
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| 78 | text = 1;
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| 79 | break;
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| 80 | case OPT_NOOUT:
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| 81 | noout = 1;
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| 82 | break;
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| 83 | case OPT_CHECK:
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| 84 | check = 1;
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| 85 | break;
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| 86 | case OPT_PROV_CASES:
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| 87 | if (!opt_provider(o))
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| 88 | goto end;
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| 89 | break;
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| 90 | }
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| 91 | }
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| 92 |
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| 93 | /* No extra arguments. */
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| 94 | argc = opt_num_rest();
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| 95 | if (argc != 0)
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| 96 | goto opthelp;
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| 97 |
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| 98 | in = bio_open_default(infile, 'r', FORMAT_PEM);
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| 99 | if (in == NULL)
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| 100 | goto end;
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| 101 | out = bio_open_default(outfile, 'w', FORMAT_PEM);
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| 102 | if (out == NULL)
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| 103 | goto end;
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| 104 | pkey = PEM_read_bio_Parameters(in, NULL);
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| 105 | if (pkey == NULL) {
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| 106 | BIO_printf(bio_err, "Error reading parameters\n");
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| 107 | ERR_print_errors(bio_err);
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| 108 | goto end;
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| 109 | }
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| 110 |
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| 111 | if (check) {
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| 112 | ctx = EVP_PKEY_CTX_new(pkey, e);
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| 113 | if (ctx == NULL) {
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| 114 | ERR_print_errors(bio_err);
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| 115 | goto end;
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| 116 | }
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| 117 |
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| 118 | r = EVP_PKEY_param_check(ctx);
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| 119 |
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| 120 | if (r == 1) {
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| 121 | BIO_printf(out, "Parameters are valid\n");
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| 122 | } else {
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| 123 | /*
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| 124 | * Note: at least for RSA keys if this function returns
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| 125 | * -1, there will be no error reasons.
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| 126 | */
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| 127 | BIO_printf(bio_err, "Parameters are invalid\n");
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| 128 | ERR_print_errors(bio_err);
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| 129 | goto end;
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| 130 | }
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| 131 | }
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| 132 |
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| 133 | if (!noout)
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| 134 | PEM_write_bio_Parameters(out, pkey);
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| 135 |
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| 136 | if (text)
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| 137 | EVP_PKEY_print_params(out, pkey, 0, NULL);
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| 138 |
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| 139 | ret = EXIT_SUCCESS;
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| 140 |
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| 141 | end:
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| 142 | EVP_PKEY_CTX_free(ctx);
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| 143 | EVP_PKEY_free(pkey);
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| 144 | release_engine(e);
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| 145 | BIO_free_all(out);
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| 146 | BIO_free(in);
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| 147 |
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| 148 | return ret;
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| 149 | }
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