[331] | 1 | /*
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| 2 | * Copyright 2002-2016 The OpenSSL Project Authors. All Rights Reserved.
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| 3 | *
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| 4 | * Licensed under the OpenSSL license (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 <openssl/opensslconf.h>
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| 11 | #ifdef OPENSSL_NO_EC
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| 12 | NON_EMPTY_TRANSLATION_UNIT
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| 13 | #else
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| 14 |
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| 15 | # include <stdio.h>
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| 16 | # include <stdlib.h>
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| 17 | # include <string.h>
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| 18 | # include "apps.h"
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| 19 | # include <openssl/bio.h>
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| 20 | # include <openssl/err.h>
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| 21 | # include <openssl/evp.h>
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| 22 | # include <openssl/pem.h>
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| 23 |
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| 24 | static OPT_PAIR conv_forms[] = {
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| 25 | {"compressed", POINT_CONVERSION_COMPRESSED},
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| 26 | {"uncompressed", POINT_CONVERSION_UNCOMPRESSED},
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| 27 | {"hybrid", POINT_CONVERSION_HYBRID},
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| 28 | {NULL}
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| 29 | };
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| 30 |
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| 31 | static OPT_PAIR param_enc[] = {
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| 32 | {"named_curve", OPENSSL_EC_NAMED_CURVE},
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| 33 | {"explicit", 0},
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| 34 | {NULL}
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| 35 | };
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| 36 |
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| 37 | typedef enum OPTION_choice {
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| 38 | OPT_ERR = -1, OPT_EOF = 0, OPT_HELP,
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| 39 | OPT_INFORM, OPT_OUTFORM, OPT_ENGINE, OPT_IN, OPT_OUT,
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| 40 | OPT_NOOUT, OPT_TEXT, OPT_PARAM_OUT, OPT_PUBIN, OPT_PUBOUT,
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| 41 | OPT_PASSIN, OPT_PASSOUT, OPT_PARAM_ENC, OPT_CONV_FORM, OPT_CIPHER,
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| 42 | OPT_NO_PUBLIC, OPT_CHECK
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| 43 | } OPTION_CHOICE;
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| 44 |
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| 45 | OPTIONS ec_options[] = {
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| 46 | {"help", OPT_HELP, '-', "Display this summary"},
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| 47 | {"in", OPT_IN, 's', "Input file"},
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| 48 | {"inform", OPT_INFORM, 'f', "Input format - DER or PEM"},
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| 49 | {"out", OPT_OUT, '>', "Output file"},
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| 50 | {"outform", OPT_OUTFORM, 'F', "Output format - DER or PEM"},
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| 51 | {"noout", OPT_NOOUT, '-', "Don't print key out"},
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| 52 | {"text", OPT_TEXT, '-', "Print the key"},
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| 53 | {"param_out", OPT_PARAM_OUT, '-', "Print the elliptic curve parameters"},
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| 54 | {"pubin", OPT_PUBIN, '-', "Expect a public key in input file"},
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| 55 | {"pubout", OPT_PUBOUT, '-', "Output public key, not private"},
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| 56 | {"no_public", OPT_NO_PUBLIC, '-', "exclude public key from private key"},
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| 57 | {"check", OPT_CHECK, '-', "check key consistency"},
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| 58 | {"passin", OPT_PASSIN, 's', "Input file pass phrase source"},
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| 59 | {"passout", OPT_PASSOUT, 's', "Output file pass phrase source"},
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| 60 | {"param_enc", OPT_PARAM_ENC, 's',
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| 61 | "Specifies the way the ec parameters are encoded"},
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| 62 | {"conv_form", OPT_CONV_FORM, 's', "Specifies the point conversion form "},
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| 63 | {"", OPT_CIPHER, '-', "Any supported cipher"},
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| 64 | # ifndef OPENSSL_NO_ENGINE
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| 65 | {"engine", OPT_ENGINE, 's', "Use engine, possibly a hardware device"},
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| 66 | # endif
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| 67 | {NULL}
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| 68 | };
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| 69 |
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| 70 | int ec_main(int argc, char **argv)
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| 71 | {
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| 72 | BIO *in = NULL, *out = NULL;
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| 73 | ENGINE *e = NULL;
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| 74 | EC_KEY *eckey = NULL;
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| 75 | const EC_GROUP *group;
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| 76 | const EVP_CIPHER *enc = NULL;
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| 77 | point_conversion_form_t form = POINT_CONVERSION_UNCOMPRESSED;
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| 78 | char *infile = NULL, *outfile = NULL, *prog;
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| 79 | char *passin = NULL, *passout = NULL, *passinarg = NULL, *passoutarg = NULL;
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| 80 | OPTION_CHOICE o;
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| 81 | int asn1_flag = OPENSSL_EC_NAMED_CURVE, new_form = 0, new_asn1_flag = 0;
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| 82 | int informat = FORMAT_PEM, outformat = FORMAT_PEM, text = 0, noout = 0;
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| 83 | int pubin = 0, pubout = 0, param_out = 0, i, ret = 1, private = 0;
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| 84 | int no_public = 0, check = 0;
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| 85 |
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| 86 | prog = opt_init(argc, argv, ec_options);
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| 87 | while ((o = opt_next()) != OPT_EOF) {
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| 88 | switch (o) {
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| 89 | case OPT_EOF:
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| 90 | case OPT_ERR:
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| 91 | opthelp:
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| 92 | BIO_printf(bio_err, "%s: Use -help for summary.\n", prog);
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| 93 | goto end;
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| 94 | case OPT_HELP:
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| 95 | opt_help(ec_options);
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| 96 | ret = 0;
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| 97 | goto end;
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| 98 | case OPT_INFORM:
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| 99 | if (!opt_format(opt_arg(), OPT_FMT_ANY, &informat))
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| 100 | goto opthelp;
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| 101 | break;
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| 102 | case OPT_IN:
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| 103 | infile = opt_arg();
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| 104 | break;
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| 105 | case OPT_OUTFORM:
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| 106 | if (!opt_format(opt_arg(), OPT_FMT_PEMDER, &outformat))
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| 107 | goto opthelp;
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| 108 | break;
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| 109 | case OPT_OUT:
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| 110 | outfile = opt_arg();
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| 111 | break;
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| 112 | case OPT_NOOUT:
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| 113 | noout = 1;
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| 114 | break;
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| 115 | case OPT_TEXT:
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| 116 | text = 1;
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| 117 | break;
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| 118 | case OPT_PARAM_OUT:
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| 119 | param_out = 1;
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| 120 | break;
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| 121 | case OPT_PUBIN:
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| 122 | pubin = 1;
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| 123 | break;
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| 124 | case OPT_PUBOUT:
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| 125 | pubout = 1;
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| 126 | break;
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| 127 | case OPT_PASSIN:
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| 128 | passinarg = opt_arg();
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| 129 | break;
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| 130 | case OPT_PASSOUT:
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| 131 | passoutarg = opt_arg();
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| 132 | break;
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| 133 | case OPT_ENGINE:
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| 134 | e = setup_engine(opt_arg(), 0);
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| 135 | break;
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| 136 | case OPT_CIPHER:
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| 137 | if (!opt_cipher(opt_unknown(), &enc))
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| 138 | goto opthelp;
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| 139 | break;
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| 140 | case OPT_CONV_FORM:
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| 141 | if (!opt_pair(opt_arg(), conv_forms, &i))
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| 142 | goto opthelp;
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| 143 | new_form = 1;
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| 144 | form = i;
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| 145 | break;
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| 146 | case OPT_PARAM_ENC:
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| 147 | if (!opt_pair(opt_arg(), param_enc, &i))
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| 148 | goto opthelp;
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| 149 | new_asn1_flag = 1;
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| 150 | asn1_flag = i;
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| 151 | break;
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| 152 | case OPT_NO_PUBLIC:
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| 153 | no_public = 1;
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| 154 | break;
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| 155 | case OPT_CHECK:
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| 156 | check = 1;
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| 157 | break;
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| 158 | }
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| 159 | }
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| 160 | argc = opt_num_rest();
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| 161 | if (argc != 0)
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| 162 | goto opthelp;
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| 163 |
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| 164 | private = param_out || pubin || pubout ? 0 : 1;
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| 165 | if (text && !pubin)
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| 166 | private = 1;
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| 167 |
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| 168 | if (!app_passwd(passinarg, passoutarg, &passin, &passout)) {
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| 169 | BIO_printf(bio_err, "Error getting passwords\n");
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| 170 | goto end;
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| 171 | }
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| 172 |
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| 173 | if (informat != FORMAT_ENGINE) {
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| 174 | in = bio_open_default(infile, 'r', informat);
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| 175 | if (in == NULL)
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| 176 | goto end;
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| 177 | }
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| 178 |
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| 179 | BIO_printf(bio_err, "read EC key\n");
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| 180 | if (informat == FORMAT_ASN1) {
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| 181 | if (pubin)
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| 182 | eckey = d2i_EC_PUBKEY_bio(in, NULL);
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| 183 | else
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| 184 | eckey = d2i_ECPrivateKey_bio(in, NULL);
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| 185 | } else if (informat == FORMAT_ENGINE) {
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| 186 | EVP_PKEY *pkey;
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| 187 | if (pubin)
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| 188 | pkey = load_pubkey(infile, informat , 1, passin, e, "Public Key");
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| 189 | else
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| 190 | pkey = load_key(infile, informat, 1, passin, e, "Private Key");
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| 191 | if (pkey != NULL) {
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| 192 | eckey = EVP_PKEY_get1_EC_KEY(pkey);
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| 193 | EVP_PKEY_free(pkey);
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| 194 | }
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| 195 | } else {
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| 196 | if (pubin)
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| 197 | eckey = PEM_read_bio_EC_PUBKEY(in, NULL, NULL, NULL);
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| 198 | else
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| 199 | eckey = PEM_read_bio_ECPrivateKey(in, NULL, NULL, passin);
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| 200 | }
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| 201 | if (eckey == NULL) {
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| 202 | BIO_printf(bio_err, "unable to load Key\n");
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| 203 | ERR_print_errors(bio_err);
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| 204 | goto end;
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| 205 | }
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| 206 |
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| 207 | out = bio_open_owner(outfile, outformat, private);
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| 208 | if (out == NULL)
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| 209 | goto end;
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| 210 |
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| 211 | group = EC_KEY_get0_group(eckey);
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| 212 |
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| 213 | if (new_form)
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| 214 | EC_KEY_set_conv_form(eckey, form);
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| 215 |
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| 216 | if (new_asn1_flag)
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| 217 | EC_KEY_set_asn1_flag(eckey, asn1_flag);
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| 218 |
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| 219 | if (no_public)
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| 220 | EC_KEY_set_enc_flags(eckey, EC_PKEY_NO_PUBKEY);
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| 221 |
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| 222 | if (text) {
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| 223 | assert(pubin || private);
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| 224 | if (!EC_KEY_print(out, eckey, 0)) {
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| 225 | perror(outfile);
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| 226 | ERR_print_errors(bio_err);
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| 227 | goto end;
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| 228 | }
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| 229 | }
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| 230 |
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| 231 | if (check) {
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| 232 | if (EC_KEY_check_key(eckey) == 1) {
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| 233 | BIO_printf(bio_err, "EC Key valid.\n");
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| 234 | } else {
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| 235 | BIO_printf(bio_err, "EC Key Invalid!\n");
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| 236 | ERR_print_errors(bio_err);
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| 237 | }
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| 238 | }
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| 239 |
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| 240 | if (noout) {
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| 241 | ret = 0;
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| 242 | goto end;
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| 243 | }
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| 244 |
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| 245 | BIO_printf(bio_err, "writing EC key\n");
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| 246 | if (outformat == FORMAT_ASN1) {
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| 247 | if (param_out)
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| 248 | i = i2d_ECPKParameters_bio(out, group);
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| 249 | else if (pubin || pubout)
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| 250 | i = i2d_EC_PUBKEY_bio(out, eckey);
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| 251 | else {
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| 252 | assert(private);
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| 253 | i = i2d_ECPrivateKey_bio(out, eckey);
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| 254 | }
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| 255 | } else {
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| 256 | if (param_out)
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| 257 | i = PEM_write_bio_ECPKParameters(out, group);
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| 258 | else if (pubin || pubout)
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| 259 | i = PEM_write_bio_EC_PUBKEY(out, eckey);
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| 260 | else {
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| 261 | assert(private);
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| 262 | i = PEM_write_bio_ECPrivateKey(out, eckey, enc,
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| 263 | NULL, 0, NULL, passout);
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| 264 | }
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| 265 | }
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| 266 |
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| 267 | if (!i) {
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| 268 | BIO_printf(bio_err, "unable to write private key\n");
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| 269 | ERR_print_errors(bio_err);
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| 270 | } else
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| 271 | ret = 0;
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| 272 | end:
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| 273 | BIO_free(in);
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| 274 | BIO_free_all(out);
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| 275 | EC_KEY_free(eckey);
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| 276 | release_engine(e);
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| 277 | OPENSSL_free(passin);
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| 278 | OPENSSL_free(passout);
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| 279 | return (ret);
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| 280 | }
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| 281 | #endif
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