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/* sc-copykeys.c - A tool to store keys on a smartcard.
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* Copyright (C) 2003 Free Software Foundation, Inc.
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* This file is part of GnuPG.
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* GnuPG is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; either version 2 of the License, or
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* (at your option) any later version.
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* GnuPG is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, write to the Free Software
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* Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA
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#include <sys/types.h>
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#define JNLIB_NEED_LOG_LOGV
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#include "../common/ttyio.h"
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#include "../common/simple-pwquery.h"
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#include "apdu.h" /* for open_reader */
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#include "app-common.h"
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enum cmd_and_opt_values
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static ARGPARSE_OPTS opts[] = {
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{ 301, NULL, 0, "@Options:\n " },
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{ oVerbose, "verbose", 0, "verbose" },
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{ oReaderPort, "reader-port", 2, "|N|connect to reader at port N"},
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{ octapiDriver, "ctapi-driver", 2, "NAME|use NAME as ctAPI driver"},
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{ oDebug, "debug" ,4|16, "set debugging flags"},
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{ oDebugAll, "debug-all" ,0, "enable full debugging"},
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static void copykeys (APP app, const char *fname);
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my_strusage (int level)
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case 11: p = "sc-copykeys (GnuPG)";
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case 13: p = VERSION; break;
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case 17: p = PRINTABLE_OS_NAME; break;
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case 19: p = _("Please report bugs to <" PACKAGE_BUGREPORT ">.\n");
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case 40: p = _("Usage: sc-copykeys [options] (-h for help)\n");
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case 41: p = _("Syntax: sc-copykeys [options] "
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"Copy keys to a smartcards\n");
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/* Used by gcry for logging */
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my_gcry_logger (void *dummy, int level, const char *fmt, va_list arg_ptr)
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/* translate the log levels */
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case GCRY_LOG_CONT: level = JNLIB_LOG_CONT; break;
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case GCRY_LOG_INFO: level = JNLIB_LOG_INFO; break;
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case GCRY_LOG_WARN: level = JNLIB_LOG_WARN; break;
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case GCRY_LOG_ERROR:level = JNLIB_LOG_ERROR; break;
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case GCRY_LOG_FATAL:level = JNLIB_LOG_FATAL; break;
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case GCRY_LOG_BUG: level = JNLIB_LOG_BUG; break;
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case GCRY_LOG_DEBUG:level = JNLIB_LOG_DEBUG; break;
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default: level = JNLIB_LOG_ERROR; break;
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log_logv (level, fmt, arg_ptr);
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main (int argc, char **argv )
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const char *reader_port = NULL;
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struct app_ctx_s appbuf;
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memset (&appbuf, 0, sizeof appbuf);
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set_strusage (my_strusage);
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gcry_control (GCRYCTL_SUSPEND_SECMEM_WARN);
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log_set_prefix ("sc-copykeys", 1);
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/* check that the libraries are suitable. Do it here because
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the option parsing may need services of the library */
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if (!gcry_check_version (NEED_LIBGCRYPT_VERSION) )
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log_fatal( _("libgcrypt is too old (need %s, have %s)\n"),
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NEED_LIBGCRYPT_VERSION, gcry_check_version (NULL) );
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gcry_set_log_handler (my_gcry_logger, NULL);
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gcry_control (GCRYCTL_DISABLE_SECMEM, 0); /* FIXME - we want to use it */
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/* FIXME? gcry_control (GCRYCTL_USE_SECURE_RNDPOOL);*/
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pargs.flags= 1; /* do not remove the args */
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while (arg_parse (&pargs, opts) )
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case oVerbose: opt.verbose++; break;
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case oDebug: opt.debug |= pargs.r.ret_ulong; break;
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case oDebugAll: opt.debug = ~0; break;
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case oReaderPort: reader_port = pargs.r.ret_str; break;
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case octapiDriver: opt.ctapi_driver = pargs.r.ret_str; break;
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default : pargs.err = 2; break;
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if (log_get_errorcount(0))
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slot = apdu_open_reader (reader_port);
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/* FIXME: Use select_application. */
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rc = app_select_openpgp (&appbuf);
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log_error ("selecting openpgp failed: %s\n", gpg_strerror (rc));
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appbuf.initialized = 1;
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log_info ("openpgp application selected\n");
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copykeys (&appbuf, *argv);
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send_status_info (CTRL ctrl, const char *keyword, ...)
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read_file (const char *fname, size_t *r_length)
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fp = fname? fopen (fname, "rb") : stdin;
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log_error ("can't open `%s': %s\n",
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fname? fname: "[stdin]", strerror (errno));
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if (fstat (fileno(fp), &st))
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log_error ("can't stat `%s': %s\n",
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fname? fname: "[stdin]", strerror (errno));
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buf = xmalloc (buflen+1);
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if (fread (buf, buflen, 1, fp) != 1)
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log_error ("error reading `%s': %s\n",
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fname? fname: "[stdin]", strerror (errno));
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read_key (const char *fname)
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buf = read_file (fname, &buflen);
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rc = gcry_sexp_new (&private, buf, buflen, 1);
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log_error ("gcry_sexp_new failed: %s\n", gpg_strerror (rc));
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sexp_to_kparms (gcry_sexp_t sexp, unsigned long *created)
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gcry_sexp_t list, l2;
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list = gcry_sexp_find_token (sexp, "private-key", 0 );
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/* quick hack to get the creation time. */
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l2 = gcry_sexp_find_token (list, "created", 0);
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if (l2 && (name = gcry_sexp_nth_data (l2, 1, &n)))
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char *tmp = xmalloc (n+1);
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memcpy (tmp, name, n);
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*created = strtoul (tmp, NULL, 10);
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gcry_sexp_release (l2);
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l2 = gcry_sexp_cadr (list);
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gcry_sexp_release (list);
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name = gcry_sexp_nth_data (list, 0, &n);
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if(!name || n != 3 || memcmp (name, "rsa", 3))
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gcry_sexp_release (list);
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/* Parameter names used with RSA. */
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array = xcalloc (strlen(elems) + 1, sizeof *array);
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for (idx=0, s=elems; *s; s++, idx++ )
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l2 = gcry_sexp_find_token (list, s, 1);
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for (i=0; i<idx; i++)
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gcry_mpi_release (array[i]);
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gcry_sexp_release (list);
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return NULL; /* required parameter not found */
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array[idx] = gcry_sexp_nth_mpi (l2, 1, GCRYMPI_FMT_USG);
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gcry_sexp_release (l2);
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for (i=0; i<idx; i++)
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gcry_mpi_release (array[i]);
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gcry_sexp_release (list);
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return NULL; /* required parameter is invalid */
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gcry_sexp_release (list);
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/* Return true if the SHA1 fingerprint FPR consists only of zeroes. */
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fpr_is_zero (const char *fpr)
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for (i=0; i < 20 && !fpr[i]; i++)
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show_sha1_fpr (const unsigned char *fpr)
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for (i=0; i < 20 ; i+=2, fpr += 2 )
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tty_printf (" %02X%02X", *fpr, fpr[1]);
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tty_printf (" [none]");
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/* Query the card, show a list of already stored keys and ask the user
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where to store the key. Returns the key number or 0 for cancel
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char *serialno, *disp_name, *pubkey_url;
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unsigned char *fpr1, *fpr2, *fpr3;
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if (app_openpgp_cardinfo (app,
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&fpr1, &fpr2, &fpr3))
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tty_printf ("Serial number ....: %s\n",
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serialno? serialno : "[none]");
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tty_printf ("Name of cardholder: %s\n",
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disp_name && *disp_name? disp_name : "[not set]");
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tty_printf ("URL of public key : %s\n",
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pubkey_url && *pubkey_url? pubkey_url : "[not set]");
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tty_printf ("Signature key ....:");
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show_sha1_fpr (fpr1);
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tty_printf ("Encryption key....:");
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show_sha1_fpr (fpr2);
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tty_printf ("Authentication key:");
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show_sha1_fpr (fpr3);
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"1 - store as signature key and reset usage counter\n"
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"2 - store as encryption key\n"
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"3 - store as authentication key\n"
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answer = tty_get("Your selection? ");
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if (strlen (answer) != 1)
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else if ( *answer == '1' )
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if ( (fpr1 && !fpr_is_zero (fpr1)) )
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log_error ("WARNING: signature key does already exists!\n");
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if ( tty_get_answer_is_yes ("Replace existing key? ") )
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else if ( *answer == '2' )
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if ( (fpr2 && !fpr_is_zero (fpr2)) )
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log_error ("WARNING: encryption key does already exists!\n");
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if ( tty_get_answer_is_yes ("Replace existing key? ") )
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else if ( *answer == '3' )
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if ( (fpr3 && !fpr_is_zero (fpr3)) )
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log_error ("WARNING: authentication key does already exists!\n");
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if ( tty_get_answer_is_yes ("Replace existing key? ") )
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else if ( *answer == 'q' || *answer == 'Q')
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/* Callback function to ask for a PIN. */
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pincb (void *arg, const char *prompt, char **pinvalue)
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char *pin = xstrdup ("12345678");
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/* pin = simple_pwquery (NULL, NULL, prompt, */
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/* "We need the admin's PIN to store the key on the card", */
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/* return gpg_error (GPG_ERR_CANCELED); */
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/* This function expects a file (or NULL for stdin) with the secret
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and public key parameters. This file should consist of an
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S-expression as used by gpg-agent. Only the unprotected format is
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(n #00e0ce9..[some bytes not shown]..51#)
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(d #046129F..[some bytes not shown]..81#)
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(p #00e861b..[some bytes not shown]..f1#)
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(q #00f7a7c..[some bytes not shown]..61#)
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(u #304559a..[some bytes not shown]..9b#))
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(uri http://foo.bar x-foo:whatever_you_want))
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copykeys (APP app, const char *fname)
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gcry_mpi_t *mpis, rsa_n, rsa_e, rsa_p, rsa_q;
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unsigned char *template, *tp;
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unsigned char m[128], e[4];
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unsigned long creation_date;
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if (!strcmp (fname, "-"))
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private = read_key (fname);
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mpis = sexp_to_kparms (private, &creation_date);
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log_info ("no creation date found - assuming current date\n");
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created_at = time (NULL);
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created_at = creation_date;
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gcry_sexp_release (private);
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log_error ("invalid structure of key file or not RSA\n");
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/* MPIS is now an array with the key parameters as defined by OpenPGP. */
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gcry_mpi_release (mpis[2]);
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gcry_mpi_release (mpis[5]);
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nbits = gcry_mpi_get_nbits (rsa_e);
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if (nbits < 2 || nbits > 32)
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log_error ("public exponent too large (more than 32 bits)\n");
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nbits = gcry_mpi_get_nbits (rsa_p);
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log_error ("length of first RSA prime is not 512\n");
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nbits = gcry_mpi_get_nbits (rsa_q);
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log_error ("length of second RSA prime is not 512\n");
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nbits = gcry_mpi_get_nbits (rsa_n);
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log_error ("length of RSA modulus is not 1024\n");
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keyno = query_card (app);
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/* Build the private key template as described in section 4.3.3.6 of
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0xC0 <length> public exponent
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0xC1 <length> prime p
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0xC2 <length> prime q */
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template = tp = xmalloc (1+2 + 1+1+4 + 1+1+64 + 1+1+64);
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rc = gcry_mpi_print (GCRYMPI_FMT_USG, tp, 4, &n, rsa_e);
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log_error ("mpi_print failed: %s\n", gpg_strerror (rc));
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memmove (tp+4-n, tp, 4-n);
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rc = gcry_mpi_print (GCRYMPI_FMT_USG, tp, 64, &n, rsa_p);
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log_error ("mpi_print failed: %s\n", gpg_strerror (rc));
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rc = gcry_mpi_print (GCRYMPI_FMT_USG, tp, 64, &n, rsa_q);
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log_error ("mpi_print failed: %s\n", gpg_strerror (rc));
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assert (tp - template == 138);
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/* (we need the modulus to calculate the fingerprint) */
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rc = gcry_mpi_print (GCRYMPI_FMT_USG, m, 128, &n, rsa_n);
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log_error ("mpi_print failed: %s\n", gpg_strerror (rc));
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rc = app_openpgp_storekey (app, keyno,
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template, tp - template,
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log_error ("error storing key: %s\n", gpg_strerror (rc));
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log_info ("key successfully stored\n");
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unsigned char *mm, *ee;
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rc = app_openpgp_readkey (app, keyno, &mm, &mmlen, &ee, &eelen);
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log_error ("error reading key back: %s\n", gpg_strerror (rc));
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/* Strip leading zeroes. */
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for (i=0; i < mmlen && !mm[i]; i++)
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memmove (mm, mm+i, mmlen);
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for (i=0; i < eelen && !ee[i]; i++)
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memmove (ee, ee+i, eelen);
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if (eelen != elen || mmlen != mlen)
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log_error ("key parameter length mismatch (n=%u/%u, e=%u/%u)\n",
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(unsigned int)mlen, (unsigned int)mmlen,
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(unsigned int)elen, (unsigned int)eelen);
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if (memcmp (m, mm, mlen))
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log_error ("key parameter n mismatch\n");
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log_printhex ("original n: ", m, mlen);
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log_printhex (" copied n: ", mm, mlen);
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if (memcmp (e, ee, elen))
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log_error ("key parameter e mismatch\n");
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log_printhex ("original e: ", e, elen);
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log_printhex (" copied e: ", ee, elen);
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gcry_mpi_release (rsa_e);
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gcry_mpi_release (rsa_p);
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gcry_mpi_release (rsa_q);
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gcry_mpi_release (rsa_n);
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gcry_mpi_release (rsa_e);
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gcry_mpi_release (rsa_p);
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gcry_mpi_release (rsa_q);
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gcry_mpi_release (rsa_n);
added
removed
scd/sc-copykeys.c
