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![Werner Koch](/assets/img/avatar_default.png)
* g10/keyid.c (fingerprint_from_pk): Show v3 fingerprints as all zero. -- MD5 is considered broken for a long time now. To make it easier for users to notice that a listing shows a v3 key, the fingerprint is now displayed as 16 zero bytes unless --allow-weak-digest-algos is active. Signed-off-by: Werner Koch <wk@gnupg.org>
832 lines
18 KiB
C
832 lines
18 KiB
C
/* keyid.c - key ID and fingerprint handling
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* Copyright (C) 1998, 1999, 2000, 2001, 2003,
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* 2004, 2006 Free Software Foundation, Inc.
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*
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* This file is part of GnuPG.
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*
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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 3 of the License, or
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* (at your option) any later version.
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*
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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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*
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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, see <http://www.gnu.org/licenses/>.
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*/
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#include <config.h>
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#include <stdio.h>
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#include <stdlib.h>
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#include <string.h>
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#include <errno.h>
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#include <time.h>
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#include <assert.h>
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#include "gpg.h"
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#include "util.h"
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#include "main.h"
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#include "packet.h"
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#include "options.h"
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#include "keydb.h"
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#include "i18n.h"
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#include "rmd160.h"
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int
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pubkey_letter( int algo )
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{
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switch( algo ) {
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case PUBKEY_ALGO_RSA: return 'R' ;
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case PUBKEY_ALGO_RSA_E: return 'r' ;
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case PUBKEY_ALGO_RSA_S: return 's' ;
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case PUBKEY_ALGO_ELGAMAL_E: return 'g';
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case PUBKEY_ALGO_ELGAMAL: return 'G' ;
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case PUBKEY_ALGO_DSA: return 'D' ;
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case PUBKEY_ALGO_ECDSA: return 'E' ; /* ECC DSA (sign only) */
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case PUBKEY_ALGO_ECDH: return 'e' ; /* ECC DH (encrypt only) */
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default: return '?';
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}
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}
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/* This function is useful for v4 fingerprints and v3 or v4 key
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signing. */
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void
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hash_public_key( gcry_md_hd_t md, PKT_public_key *pk )
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{
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unsigned int n = 6;
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unsigned int nn[PUBKEY_MAX_NPKEY];
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byte *pp[PUBKEY_MAX_NPKEY];
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int i;
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unsigned int nbits;
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size_t nbytes;
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int npkey = pubkey_get_npkey (pk->pubkey_algo);
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/* Two extra bytes for the expiration date in v3 */
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if(pk->version<4)
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n+=2;
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if (npkey==0 && pk->pkey[0]
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&& gcry_mpi_get_flag (pk->pkey[0], GCRYMPI_FLAG_OPAQUE))
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{
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pp[0] = gcry_mpi_get_opaque (pk->pkey[0], &nbits);
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nn[0] = (nbits+7)/8;
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n+=nn[0];
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}
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else
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for(i=0; i < npkey; i++ )
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{
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if (gcry_mpi_print (GCRYMPI_FMT_PGP, NULL, 0, &nbytes, pk->pkey[i]))
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BUG ();
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pp[i] = xmalloc (nbytes);
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if (gcry_mpi_print (GCRYMPI_FMT_PGP, pp[i], nbytes,
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&nbytes, pk->pkey[i]))
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BUG ();
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nn[i] = nbytes;
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n += nn[i];
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}
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gcry_md_putc ( md, 0x99 ); /* ctb */
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/* What does it mean if n is greater than than 0xFFFF ? */
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gcry_md_putc ( md, n >> 8 ); /* 2 byte length header */
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gcry_md_putc ( md, n );
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gcry_md_putc ( md, pk->version );
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gcry_md_putc ( md, pk->timestamp >> 24 );
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gcry_md_putc ( md, pk->timestamp >> 16 );
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gcry_md_putc ( md, pk->timestamp >> 8 );
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gcry_md_putc ( md, pk->timestamp );
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if(pk->version<4)
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{
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u16 days=0;
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if(pk->expiredate)
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days=(u16)((pk->expiredate - pk->timestamp) / 86400L);
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gcry_md_putc ( md, days >> 8 );
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gcry_md_putc ( md, days );
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}
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gcry_md_putc ( md, pk->pubkey_algo );
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if(npkey==0 && pk->pkey[0]
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&& gcry_mpi_get_flag (pk->pkey[0], GCRYMPI_FLAG_OPAQUE))
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{
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gcry_md_write (md, pp[0], nn[0]);
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}
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else
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for(i=0; i < npkey; i++ )
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{
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gcry_md_write ( md, pp[i], nn[i] );
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xfree(pp[i]);
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}
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}
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static gcry_md_hd_t
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do_fingerprint_md( PKT_public_key *pk )
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{
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gcry_md_hd_t md;
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if (gcry_md_open (&md, DIGEST_ALGO_SHA1, 0))
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BUG ();
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hash_public_key(md,pk);
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gcry_md_final( md );
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return md;
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}
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static gcry_md_hd_t
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do_fingerprint_md_sk( PKT_secret_key *sk )
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{
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PKT_public_key pk;
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int npkey = pubkey_get_npkey( sk->pubkey_algo ); /* npkey is correct! */
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int i;
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if(npkey==0)
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return NULL;
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pk.pubkey_algo = sk->pubkey_algo;
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pk.version = sk->version;
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pk.timestamp = sk->timestamp;
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pk.expiredate = sk->expiredate;
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pk.pubkey_algo = sk->pubkey_algo;
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for( i=0; i < npkey; i++ )
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pk.pkey[i] = sk->skey[i];
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return do_fingerprint_md( &pk );
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}
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u32
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v3_keyid (gcry_mpi_t a, u32 *ki)
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{
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byte *buffer, *p;
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size_t nbytes;
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if (gcry_mpi_print (GCRYMPI_FMT_USG, NULL, 0, &nbytes, a ))
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BUG ();
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/* fixme: allocate it on the stack */
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buffer = xmalloc (nbytes);
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if (gcry_mpi_print( GCRYMPI_FMT_USG, buffer, nbytes, NULL, a ))
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BUG ();
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if (nbytes < 8) /* oops */
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ki[0] = ki[1] = 0;
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else
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{
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p = buffer + nbytes - 8;
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ki[0] = (p[0] << 24) | (p[1] <<16) | (p[2] << 8) | p[3];
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p += 4;
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ki[1] = (p[0] << 24) | (p[1] <<16) | (p[2] << 8) | p[3];
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}
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xfree (buffer);
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return ki[1];
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}
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size_t
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keystrlen(void)
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{
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switch(opt.keyid_format)
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{
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case KF_SHORT:
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return 8;
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case KF_LONG:
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return 16;
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case KF_0xSHORT:
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return 10;
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case KF_0xLONG:
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return 18;
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default:
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BUG();
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}
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}
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const char *
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keystr(u32 *keyid)
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{
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static char keyid_str[19];
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switch(opt.keyid_format)
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{
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case KF_SHORT:
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sprintf(keyid_str,"%08lX",(ulong)keyid[1]);
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break;
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case KF_LONG:
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if(keyid[0])
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sprintf(keyid_str,"%08lX%08lX",(ulong)keyid[0],(ulong)keyid[1]);
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else
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sprintf(keyid_str,"%08lX",(ulong)keyid[1]);
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break;
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case KF_0xSHORT:
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sprintf(keyid_str,"0x%08lX",(ulong)keyid[1]);
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break;
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case KF_0xLONG:
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if(keyid[0])
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sprintf(keyid_str,"0x%08lX%08lX",(ulong)keyid[0],(ulong)keyid[1]);
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else
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sprintf(keyid_str,"0x%08lX",(ulong)keyid[1]);
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break;
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default:
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BUG();
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}
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return keyid_str;
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}
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const char *
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keystr_from_pk(PKT_public_key *pk)
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{
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keyid_from_pk(pk,NULL);
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return keystr(pk->keyid);
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}
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const char *
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keystr_from_sk(PKT_secret_key *sk)
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{
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keyid_from_sk(sk,NULL);
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return keystr(sk->keyid);
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}
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const char *
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keystr_from_desc(KEYDB_SEARCH_DESC *desc)
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{
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switch(desc->mode)
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{
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case KEYDB_SEARCH_MODE_LONG_KID:
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case KEYDB_SEARCH_MODE_SHORT_KID:
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return keystr(desc->u.kid);
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case KEYDB_SEARCH_MODE_FPR20:
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{
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u32 keyid[2];
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keyid[0] = ((unsigned char)desc->u.fpr[12] << 24
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| (unsigned char)desc->u.fpr[13] << 16
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| (unsigned char)desc->u.fpr[14] << 8
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| (unsigned char)desc->u.fpr[15]);
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keyid[1] = ((unsigned char)desc->u.fpr[16] << 24
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| (unsigned char)desc->u.fpr[17] << 16
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| (unsigned char)desc->u.fpr[18] << 8
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| (unsigned char)desc->u.fpr[19]);
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return keystr(keyid);
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}
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case KEYDB_SEARCH_MODE_FPR16:
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return "?v3 fpr?";
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default:
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BUG();
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}
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}
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/****************
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* Get the keyid from the secret key and put it into keyid
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* if this is not NULL. Return the 32 low bits of the keyid.
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*/
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u32
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keyid_from_sk( PKT_secret_key *sk, u32 *keyid )
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{
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u32 lowbits;
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u32 dummy_keyid[2];
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if( !keyid )
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keyid = dummy_keyid;
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if( sk->keyid[0] || sk->keyid[1] )
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{
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keyid[0] = sk->keyid[0];
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keyid[1] = sk->keyid[1];
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lowbits = keyid[1];
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}
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else if( sk->version < 4 )
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{
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if( is_RSA(sk->pubkey_algo) )
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{
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lowbits = (pubkey_get_npkey (sk->pubkey_algo) ?
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v3_keyid( sk->skey[0], keyid ) : 0); /* Take n. */
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sk->keyid[0]=keyid[0];
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sk->keyid[1]=keyid[1];
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}
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else
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sk->keyid[0]=sk->keyid[1]=keyid[0]=keyid[1]=lowbits=0xFFFFFFFF;
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}
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else
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{
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const byte *dp;
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gcry_md_hd_t md;
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md = do_fingerprint_md_sk(sk);
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if(md)
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{
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dp = gcry_md_read (md, 0);
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keyid[0] = dp[12] << 24 | dp[13] << 16 | dp[14] << 8 | dp[15] ;
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keyid[1] = dp[16] << 24 | dp[17] << 16 | dp[18] << 8 | dp[19] ;
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lowbits = keyid[1];
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gcry_md_close (md);
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sk->keyid[0] = keyid[0];
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sk->keyid[1] = keyid[1];
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}
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else
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sk->keyid[0]=sk->keyid[1]=keyid[0]=keyid[1]=lowbits=0xFFFFFFFF;
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}
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return lowbits;
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}
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/****************
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* Get the keyid from the public key and put it into keyid
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* if this is not NULL. Return the 32 low bits of the keyid.
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*/
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u32
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keyid_from_pk( PKT_public_key *pk, u32 *keyid )
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{
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u32 lowbits;
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u32 dummy_keyid[2];
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if( !keyid )
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keyid = dummy_keyid;
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if( pk->keyid[0] || pk->keyid[1] )
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{
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keyid[0] = pk->keyid[0];
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keyid[1] = pk->keyid[1];
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lowbits = keyid[1];
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}
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else if( pk->version < 4 )
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{
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if( is_RSA(pk->pubkey_algo) )
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{
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lowbits = (pubkey_get_npkey (pk->pubkey_algo) ?
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v3_keyid ( pk->pkey[0], keyid ) : 0); /* From n. */
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pk->keyid[0] = keyid[0];
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pk->keyid[1] = keyid[1];
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}
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else
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pk->keyid[0]=pk->keyid[1]=keyid[0]=keyid[1]=lowbits=0xFFFFFFFF;
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}
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else
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{
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const byte *dp;
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gcry_md_hd_t md;
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md = do_fingerprint_md(pk);
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if(md)
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{
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dp = gcry_md_read ( md, 0 );
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keyid[0] = dp[12] << 24 | dp[13] << 16 | dp[14] << 8 | dp[15] ;
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keyid[1] = dp[16] << 24 | dp[17] << 16 | dp[18] << 8 | dp[19] ;
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lowbits = keyid[1];
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gcry_md_close (md);
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pk->keyid[0] = keyid[0];
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pk->keyid[1] = keyid[1];
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}
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else
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pk->keyid[0]=pk->keyid[1]=keyid[0]=keyid[1]=lowbits=0xFFFFFFFF;
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}
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return lowbits;
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}
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/****************
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* Get the keyid from the fingerprint. This function is simple for most
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* keys, but has to do a keylookup for old stayle keys.
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*/
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u32
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keyid_from_fingerprint( const byte *fprint, size_t fprint_len, u32 *keyid )
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{
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u32 dummy_keyid[2];
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if( !keyid )
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keyid = dummy_keyid;
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if( fprint_len != 20 ) {
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/* This is special as we have to lookup the key first */
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PKT_public_key pk;
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int rc;
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memset( &pk, 0, sizeof pk );
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rc = get_pubkey_byfprint( &pk, fprint, fprint_len );
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if( rc ) {
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log_error("Oops: keyid_from_fingerprint: no pubkey\n");
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keyid[0] = 0;
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keyid[1] = 0;
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}
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else
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keyid_from_pk( &pk, keyid );
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}
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else {
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const byte *dp = fprint;
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keyid[0] = dp[12] << 24 | dp[13] << 16 | dp[14] << 8 | dp[15] ;
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keyid[1] = dp[16] << 24 | dp[17] << 16 | dp[18] << 8 | dp[19] ;
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}
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return keyid[1];
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}
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u32
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keyid_from_sig( PKT_signature *sig, u32 *keyid )
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{
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if( keyid ) {
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keyid[0] = sig->keyid[0];
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keyid[1] = sig->keyid[1];
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}
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return sig->keyid[1];
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}
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byte *
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namehash_from_uid(PKT_user_id *uid)
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{
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if (!uid->namehash)
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{
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uid->namehash = xmalloc (20);
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if(uid->attrib_data)
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rmd160_hash_buffer (uid->namehash, uid->attrib_data, uid->attrib_len);
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else
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rmd160_hash_buffer (uid->namehash, uid->name, uid->len);
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}
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return uid->namehash;
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}
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/****************
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* return the number of bits used in the pk
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*/
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unsigned
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nbits_from_pk( PKT_public_key *pk )
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{
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return pubkey_nbits( pk->pubkey_algo, pk->pkey );
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}
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/****************
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* return the number of bits used in the sk
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*/
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unsigned
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nbits_from_sk( PKT_secret_key *sk )
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{
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return pubkey_nbits( sk->pubkey_algo, sk->skey );
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}
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static const char *
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mk_datestr (char *buffer, time_t atime)
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{
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struct tm *tp;
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if ( atime < 0 ) /* 32 bit time_t and after 2038-01-19 */
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strcpy (buffer, "????" "-??" "-??"); /* mark this as invalid */
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else {
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tp = gmtime (&atime);
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sprintf (buffer,"%04d-%02d-%02d",
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1900+tp->tm_year, tp->tm_mon+1, tp->tm_mday );
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}
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return buffer;
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}
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/****************
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* return a string with the creation date of the pk
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* Note: this is alloced in a static buffer.
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* Format is: yyyy-mm-dd
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*/
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const char *
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datestr_from_pk( PKT_public_key *pk )
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{
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static char buffer[11+5];
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time_t atime = pk->timestamp;
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return mk_datestr (buffer, atime);
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}
|
|
|
|
const char *
|
|
datestr_from_sk( PKT_secret_key *sk )
|
|
{
|
|
static char buffer[11+5];
|
|
time_t atime = sk->timestamp;
|
|
|
|
return mk_datestr (buffer, atime);
|
|
}
|
|
|
|
const char *
|
|
datestr_from_sig( PKT_signature *sig )
|
|
{
|
|
static char buffer[11+5];
|
|
time_t atime = sig->timestamp;
|
|
|
|
return mk_datestr (buffer, atime);
|
|
}
|
|
|
|
const char *
|
|
expirestr_from_pk( PKT_public_key *pk )
|
|
{
|
|
static char buffer[11+5];
|
|
time_t atime;
|
|
|
|
if( !pk->expiredate )
|
|
return _("never ");
|
|
atime = pk->expiredate;
|
|
return mk_datestr (buffer, atime);
|
|
}
|
|
|
|
const char *
|
|
expirestr_from_sk( PKT_secret_key *sk )
|
|
{
|
|
static char buffer[11+5];
|
|
time_t atime;
|
|
|
|
if( !sk->expiredate )
|
|
return _("never ");
|
|
atime = sk->expiredate;
|
|
return mk_datestr (buffer, atime);
|
|
}
|
|
|
|
const char *
|
|
expirestr_from_sig( PKT_signature *sig )
|
|
{
|
|
static char buffer[11+5];
|
|
time_t atime;
|
|
|
|
if(!sig->expiredate)
|
|
return _("never ");
|
|
atime=sig->expiredate;
|
|
return mk_datestr (buffer, atime);
|
|
}
|
|
|
|
const char *
|
|
revokestr_from_pk( PKT_public_key *pk )
|
|
{
|
|
static char buffer[11+5];
|
|
time_t atime;
|
|
|
|
if(!pk->revoked.date)
|
|
return _("never ");
|
|
atime=pk->revoked.date;
|
|
return mk_datestr (buffer, atime);
|
|
}
|
|
|
|
|
|
const char *
|
|
usagestr_from_pk( PKT_public_key *pk )
|
|
{
|
|
static char buffer[10];
|
|
int i = 0;
|
|
unsigned int use = pk->pubkey_usage;
|
|
|
|
if ( use & PUBKEY_USAGE_SIG )
|
|
buffer[i++] = 'S';
|
|
|
|
if ( use & PUBKEY_USAGE_CERT )
|
|
buffer[i++] = 'C';
|
|
|
|
if ( use & PUBKEY_USAGE_ENC )
|
|
buffer[i++] = 'E';
|
|
|
|
if ( (use & PUBKEY_USAGE_AUTH) )
|
|
buffer[i++] = 'A';
|
|
|
|
while (i < 4)
|
|
buffer[i++] = ' ';
|
|
|
|
buffer[i] = 0;
|
|
return buffer;
|
|
}
|
|
|
|
|
|
const char *
|
|
colon_strtime (u32 t)
|
|
{
|
|
static char buf[20];
|
|
|
|
if (!t)
|
|
return "";
|
|
snprintf (buf, sizeof buf, "%lu", (ulong)t);
|
|
return buf;
|
|
}
|
|
|
|
const char *
|
|
colon_datestr_from_pk (PKT_public_key *pk)
|
|
{
|
|
static char buf[20];
|
|
|
|
snprintf (buf, sizeof buf, "%lu", (ulong)pk->timestamp);
|
|
return buf;
|
|
}
|
|
|
|
const char *
|
|
colon_datestr_from_sk (PKT_secret_key *sk)
|
|
{
|
|
static char buf[20];
|
|
|
|
snprintf (buf, sizeof buf, "%lu", (ulong)sk->timestamp);
|
|
return buf;
|
|
}
|
|
|
|
const char *
|
|
colon_datestr_from_sig (PKT_signature *sig)
|
|
{
|
|
static char buf[20];
|
|
|
|
snprintf (buf, sizeof buf, "%lu", (ulong)sig->timestamp);
|
|
return buf;
|
|
}
|
|
|
|
const char *
|
|
colon_expirestr_from_sig (PKT_signature *sig)
|
|
{
|
|
static char buf[20];
|
|
|
|
if (!sig->expiredate)
|
|
return "";
|
|
|
|
snprintf (buf, sizeof buf,"%lu", (ulong)sig->expiredate);
|
|
return buf;
|
|
}
|
|
|
|
|
|
/**************** .
|
|
* Return a byte array with the fingerprint for the given PK/SK
|
|
* The length of the array is returned in ret_len. Caller must free
|
|
* the array or provide an array of length MAX_FINGERPRINT_LEN.
|
|
*/
|
|
|
|
byte *
|
|
fingerprint_from_pk( PKT_public_key *pk, byte *array, size_t *ret_len )
|
|
{
|
|
byte *buf;
|
|
const byte *dp;
|
|
size_t len, nbytes;
|
|
int i;
|
|
|
|
if ( pk->version < 4 )
|
|
{
|
|
if ( is_RSA(pk->pubkey_algo) && opt.flags.allow_weak_digest_algos)
|
|
{
|
|
/* RSA in version 3 packets is special. */
|
|
gcry_md_hd_t md;
|
|
|
|
if (gcry_md_open (&md, DIGEST_ALGO_MD5, 0))
|
|
BUG ();
|
|
if ( pubkey_get_npkey (pk->pubkey_algo) > 1 )
|
|
{
|
|
for (i=0; i < 2; i++)
|
|
{
|
|
if (gcry_mpi_print (GCRYMPI_FMT_USG, NULL, 0,
|
|
&nbytes, pk->pkey[i]))
|
|
BUG ();
|
|
/* fixme: Better allocate BUF on the stack */
|
|
buf = xmalloc (nbytes);
|
|
if (gcry_mpi_print (GCRYMPI_FMT_USG, buf, nbytes,
|
|
NULL, pk->pkey[i]))
|
|
BUG ();
|
|
gcry_md_write (md, buf, nbytes);
|
|
xfree (buf);
|
|
}
|
|
}
|
|
gcry_md_final (md);
|
|
if (!array)
|
|
array = xmalloc (16);
|
|
len = 16;
|
|
memcpy (array, gcry_md_read (md, DIGEST_ALGO_MD5), 16);
|
|
gcry_md_close(md);
|
|
}
|
|
else
|
|
{
|
|
if (!array)
|
|
array = xmalloc(16);
|
|
len = 16;
|
|
memset (array,0,16);
|
|
}
|
|
}
|
|
else
|
|
{
|
|
gcry_md_hd_t md;
|
|
|
|
md = do_fingerprint_md(pk);
|
|
dp = gcry_md_read( md, 0 );
|
|
len = gcry_md_get_algo_dlen (gcry_md_get_algo (md));
|
|
assert( len <= MAX_FINGERPRINT_LEN );
|
|
if (!array)
|
|
array = xmalloc ( len );
|
|
memcpy (array, dp, len );
|
|
pk->keyid[0] = dp[12] << 24 | dp[13] << 16 | dp[14] << 8 | dp[15] ;
|
|
pk->keyid[1] = dp[16] << 24 | dp[17] << 16 | dp[18] << 8 | dp[19] ;
|
|
gcry_md_close( md);
|
|
}
|
|
|
|
*ret_len = len;
|
|
return array;
|
|
}
|
|
|
|
byte *
|
|
fingerprint_from_sk( PKT_secret_key *sk, byte *array, size_t *ret_len )
|
|
{
|
|
byte *buf;
|
|
const char *dp;
|
|
size_t len, nbytes;
|
|
int i;
|
|
|
|
if (sk->version < 4)
|
|
{
|
|
if ( is_RSA(sk->pubkey_algo) )
|
|
{
|
|
/* RSA in version 3 packets is special. */
|
|
gcry_md_hd_t md;
|
|
|
|
if (gcry_md_open (&md, DIGEST_ALGO_MD5, 0))
|
|
BUG ();
|
|
if (pubkey_get_npkey( sk->pubkey_algo ) > 1)
|
|
{
|
|
for (i=0; i < 2; i++)
|
|
{
|
|
if (gcry_mpi_print (GCRYMPI_FMT_USG, NULL, 0,
|
|
&nbytes, sk->skey[i]))
|
|
BUG ();
|
|
/* fixme: Better allocate BUF on the stack */
|
|
buf = xmalloc (nbytes);
|
|
if (gcry_mpi_print (GCRYMPI_FMT_USG, buf, nbytes,
|
|
NULL, sk->skey[i]))
|
|
BUG ();
|
|
gcry_md_write (md, buf, nbytes);
|
|
xfree (buf);
|
|
}
|
|
}
|
|
gcry_md_final(md);
|
|
if (!array)
|
|
array = xmalloc (16);
|
|
len = 16;
|
|
memcpy (array, gcry_md_read (md, DIGEST_ALGO_MD5), 16);
|
|
gcry_md_close (md);
|
|
}
|
|
else
|
|
{
|
|
if (!array)
|
|
array = xmalloc (16);
|
|
len=16;
|
|
memset (array,0,16);
|
|
}
|
|
}
|
|
else
|
|
{
|
|
gcry_md_hd_t md;
|
|
|
|
md = do_fingerprint_md_sk(sk);
|
|
if (md)
|
|
{
|
|
dp = gcry_md_read ( md, 0 );
|
|
len = gcry_md_get_algo_dlen ( gcry_md_get_algo (md) );
|
|
assert ( len <= MAX_FINGERPRINT_LEN );
|
|
if (!array)
|
|
array = xmalloc( len );
|
|
memcpy (array, dp, len);
|
|
gcry_md_close (md);
|
|
}
|
|
else
|
|
{
|
|
len = MAX_FINGERPRINT_LEN;
|
|
if (!array)
|
|
array = xmalloc (len);
|
|
memset (array, 0, len);
|
|
}
|
|
}
|
|
|
|
*ret_len = len;
|
|
return array;
|
|
}
|
|
|
|
|
|
/* Create a serialno/fpr string from the serial number and the secret
|
|
key. Caller must free the returned string. There is no error
|
|
return. */
|
|
char *
|
|
serialno_and_fpr_from_sk (const unsigned char *sn, size_t snlen,
|
|
PKT_secret_key *sk)
|
|
{
|
|
unsigned char fpr[MAX_FINGERPRINT_LEN];
|
|
size_t fprlen;
|
|
char *buffer, *p;
|
|
int i;
|
|
|
|
fingerprint_from_sk (sk, fpr, &fprlen);
|
|
buffer = p = xmalloc (snlen*2 + 1 + fprlen*2 + 1);
|
|
for (i=0; i < snlen; i++, p+=2)
|
|
sprintf (p, "%02X", sn[i]);
|
|
*p++ = '/';
|
|
for (i=0; i < fprlen; i++, p+=2)
|
|
sprintf (p, "%02X", fpr[i]);
|
|
*p = 0;
|
|
return buffer;
|
|
}
|