315 lines
8.2 KiB
C
315 lines
8.2 KiB
C
/*
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* Copyright 2006-2018 The OpenSSL Project Authors. All Rights Reserved.
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*
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* Licensed under the OpenSSL license (the "License"). You may not use
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* this file except in compliance with the License. You can obtain a copy
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* in the file LICENSE in the source distribution or at
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* https://www.openssl.org/source/license.html
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*/
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#include <stdio.h>
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#include <string.h>
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#include "apps.h"
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#include "progs.h"
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#include <openssl/pem.h>
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#include <openssl/err.h>
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#include <openssl/evp.h>
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#ifndef OPENSSL_NO_ENGINE
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# include <openssl/engine.h>
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#endif
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static int init_keygen_file(EVP_PKEY_CTX **pctx, const char *file, ENGINE *e);
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static int genpkey_cb(EVP_PKEY_CTX *ctx);
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typedef enum OPTION_choice {
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OPT_ERR = -1, OPT_EOF = 0, OPT_HELP,
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OPT_ENGINE, OPT_OUTFORM, OPT_OUT, OPT_PASS, OPT_PARAMFILE,
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OPT_ALGORITHM, OPT_PKEYOPT, OPT_GENPARAM, OPT_TEXT, OPT_CIPHER
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} OPTION_CHOICE;
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const OPTIONS genpkey_options[] = {
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{"help", OPT_HELP, '-', "Display this summary"},
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{"out", OPT_OUT, '>', "Output file"},
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{"outform", OPT_OUTFORM, 'F', "output format (DER or PEM)"},
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{"pass", OPT_PASS, 's', "Output file pass phrase source"},
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{"paramfile", OPT_PARAMFILE, '<', "Parameters file"},
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{"algorithm", OPT_ALGORITHM, 's', "The public key algorithm"},
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{"pkeyopt", OPT_PKEYOPT, 's',
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"Set the public key algorithm option as opt:value"},
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{"genparam", OPT_GENPARAM, '-', "Generate parameters, not key"},
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{"text", OPT_TEXT, '-', "Print the in text"},
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{"", OPT_CIPHER, '-', "Cipher to use to encrypt the key"},
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#ifndef OPENSSL_NO_ENGINE
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{"engine", OPT_ENGINE, 's', "Use engine, possibly a hardware device"},
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#endif
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/* This is deliberately last. */
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{OPT_HELP_STR, 1, 1,
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"Order of options may be important! See the documentation.\n"},
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{NULL}
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};
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int genpkey_main(int argc, char **argv)
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{
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BIO *in = NULL, *out = NULL;
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ENGINE *e = NULL;
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EVP_PKEY *pkey = NULL;
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EVP_PKEY_CTX *ctx = NULL;
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char *outfile = NULL, *passarg = NULL, *pass = NULL, *prog;
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const EVP_CIPHER *cipher = NULL;
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OPTION_CHOICE o;
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int outformat = FORMAT_PEM, text = 0, ret = 1, rv, do_param = 0;
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int private = 0;
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prog = opt_init(argc, argv, genpkey_options);
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while ((o = opt_next()) != OPT_EOF) {
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switch (o) {
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case OPT_EOF:
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case OPT_ERR:
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opthelp:
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BIO_printf(bio_err, "%s: Use -help for summary.\n", prog);
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goto end;
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case OPT_HELP:
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ret = 0;
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opt_help(genpkey_options);
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goto end;
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case OPT_OUTFORM:
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if (!opt_format(opt_arg(), OPT_FMT_PEMDER, &outformat))
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goto opthelp;
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break;
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case OPT_OUT:
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outfile = opt_arg();
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break;
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case OPT_PASS:
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passarg = opt_arg();
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break;
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case OPT_ENGINE:
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e = setup_engine(opt_arg(), 0);
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break;
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case OPT_PARAMFILE:
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if (do_param == 1)
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goto opthelp;
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if (!init_keygen_file(&ctx, opt_arg(), e))
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goto end;
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break;
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case OPT_ALGORITHM:
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if (!init_gen_str(&ctx, opt_arg(), e, do_param))
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goto end;
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break;
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case OPT_PKEYOPT:
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if (ctx == NULL) {
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BIO_printf(bio_err, "%s: No keytype specified.\n", prog);
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goto opthelp;
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}
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if (pkey_ctrl_string(ctx, opt_arg()) <= 0) {
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BIO_printf(bio_err,
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"%s: Error setting %s parameter:\n",
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prog, opt_arg());
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ERR_print_errors(bio_err);
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goto end;
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}
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break;
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case OPT_GENPARAM:
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if (ctx != NULL)
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goto opthelp;
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do_param = 1;
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break;
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case OPT_TEXT:
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text = 1;
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break;
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case OPT_CIPHER:
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if (!opt_cipher(opt_unknown(), &cipher)
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|| do_param == 1)
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goto opthelp;
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}
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}
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argc = opt_num_rest();
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if (argc != 0)
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goto opthelp;
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private = do_param ? 0 : 1;
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if (ctx == NULL)
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goto opthelp;
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if (!app_passwd(passarg, NULL, &pass, NULL)) {
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BIO_puts(bio_err, "Error getting password\n");
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goto end;
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}
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out = bio_open_owner(outfile, outformat, private);
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if (out == NULL)
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goto end;
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EVP_PKEY_CTX_set_cb(ctx, genpkey_cb);
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EVP_PKEY_CTX_set_app_data(ctx, bio_err);
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if (do_param) {
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if (EVP_PKEY_paramgen(ctx, &pkey) <= 0) {
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BIO_puts(bio_err, "Error generating parameters\n");
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ERR_print_errors(bio_err);
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goto end;
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}
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} else {
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if (EVP_PKEY_keygen(ctx, &pkey) <= 0) {
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BIO_puts(bio_err, "Error generating key\n");
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ERR_print_errors(bio_err);
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goto end;
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}
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}
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if (do_param) {
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rv = PEM_write_bio_Parameters(out, pkey);
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} else if (outformat == FORMAT_PEM) {
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assert(private);
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rv = PEM_write_bio_PrivateKey(out, pkey, cipher, NULL, 0, NULL, pass);
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} else if (outformat == FORMAT_ASN1) {
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assert(private);
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rv = i2d_PrivateKey_bio(out, pkey);
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} else {
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BIO_printf(bio_err, "Bad format specified for key\n");
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goto end;
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}
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if (rv <= 0) {
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BIO_puts(bio_err, "Error writing key\n");
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ERR_print_errors(bio_err);
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}
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if (text) {
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if (do_param)
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rv = EVP_PKEY_print_params(out, pkey, 0, NULL);
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else
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rv = EVP_PKEY_print_private(out, pkey, 0, NULL);
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if (rv <= 0) {
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BIO_puts(bio_err, "Error printing key\n");
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ERR_print_errors(bio_err);
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}
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}
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ret = 0;
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end:
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EVP_PKEY_free(pkey);
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EVP_PKEY_CTX_free(ctx);
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BIO_free_all(out);
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BIO_free(in);
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release_engine(e);
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OPENSSL_free(pass);
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return ret;
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}
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static int init_keygen_file(EVP_PKEY_CTX **pctx, const char *file, ENGINE *e)
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{
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BIO *pbio;
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EVP_PKEY *pkey = NULL;
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EVP_PKEY_CTX *ctx = NULL;
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if (*pctx) {
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BIO_puts(bio_err, "Parameters already set!\n");
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return 0;
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}
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pbio = BIO_new_file(file, "r");
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if (!pbio) {
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BIO_printf(bio_err, "Can't open parameter file %s\n", file);
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return 0;
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}
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pkey = PEM_read_bio_Parameters(pbio, NULL);
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BIO_free(pbio);
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if (!pkey) {
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BIO_printf(bio_err, "Error reading parameter file %s\n", file);
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return 0;
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}
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ctx = EVP_PKEY_CTX_new(pkey, e);
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if (ctx == NULL)
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goto err;
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if (EVP_PKEY_keygen_init(ctx) <= 0)
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goto err;
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EVP_PKEY_free(pkey);
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*pctx = ctx;
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return 1;
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err:
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BIO_puts(bio_err, "Error initializing context\n");
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ERR_print_errors(bio_err);
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EVP_PKEY_CTX_free(ctx);
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EVP_PKEY_free(pkey);
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return 0;
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}
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int init_gen_str(EVP_PKEY_CTX **pctx,
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const char *algname, ENGINE *e, int do_param)
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{
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EVP_PKEY_CTX *ctx = NULL;
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const EVP_PKEY_ASN1_METHOD *ameth;
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ENGINE *tmpeng = NULL;
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int pkey_id;
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if (*pctx) {
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BIO_puts(bio_err, "Algorithm already set!\n");
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return 0;
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}
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ameth = EVP_PKEY_asn1_find_str(&tmpeng, algname, -1);
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#ifndef OPENSSL_NO_ENGINE
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if (!ameth && e)
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ameth = ENGINE_get_pkey_asn1_meth_str(e, algname, -1);
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#endif
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if (!ameth) {
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BIO_printf(bio_err, "Algorithm %s not found\n", algname);
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return 0;
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}
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ERR_clear_error();
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EVP_PKEY_asn1_get0_info(&pkey_id, NULL, NULL, NULL, NULL, ameth);
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#ifndef OPENSSL_NO_ENGINE
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ENGINE_finish(tmpeng);
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#endif
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ctx = EVP_PKEY_CTX_new_id(pkey_id, e);
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if (!ctx)
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goto err;
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if (do_param) {
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if (EVP_PKEY_paramgen_init(ctx) <= 0)
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goto err;
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} else {
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if (EVP_PKEY_keygen_init(ctx) <= 0)
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goto err;
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}
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*pctx = ctx;
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return 1;
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err:
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BIO_printf(bio_err, "Error initializing %s context\n", algname);
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ERR_print_errors(bio_err);
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EVP_PKEY_CTX_free(ctx);
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return 0;
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}
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static int genpkey_cb(EVP_PKEY_CTX *ctx)
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{
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char c = '*';
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BIO *b = EVP_PKEY_CTX_get_app_data(ctx);
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int p;
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p = EVP_PKEY_CTX_get_keygen_info(ctx, 0);
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if (p == 0)
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c = '.';
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if (p == 1)
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c = '+';
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if (p == 2)
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c = '*';
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if (p == 3)
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c = '\n';
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BIO_write(b, &c, 1);
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(void)BIO_flush(b);
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return 1;
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}
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