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40 results

sha3-384.c

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  • Forked from Nettle / nettle
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    • Nikos Mavrogiannopoulos's avatar
      da81c86a
      abi: explicitly export intended symbols and hide others · da81c86a
      Nikos Mavrogiannopoulos authored and Niels Möller's avatar Niels Möller committed
      This adds all exported symbols in the map files explicitly under
      the following rules:
       - Symbols mentioned in internal headers go in a section which is
         valid only for testing, and linking with these symbols will break
         in library updates.
       - Symbols mentioned in installed headers go in the exported sections
         and are considered part of the ABI.
       - All internal symbols move to internal headers.
       - The _nettle_md5_compress and _nettle_sha1_compress become exported
         without the _nettle prefix, due to existing usage.
      da81c86a
      History
      abi: explicitly export intended symbols and hide others
      Nikos Mavrogiannopoulos authored and Niels Möller's avatar Niels Möller committed
      This adds all exported symbols in the map files explicitly under
      the following rules:
       - Symbols mentioned in internal headers go in a section which is
         valid only for testing, and linking with these symbols will break
         in library updates.
       - Symbols mentioned in installed headers go in the exported sections
         and are considered part of the ABI.
       - All internal symbols move to internal headers.
       - The _nettle_md5_compress and _nettle_sha1_compress become exported
         without the _nettle prefix, due to existing usage.
    rsa2openpgp.c 2.80 KiB
    /* rsa2openpgp.c
    
       Converting rsa keys to OpenPGP format.
    
       Copyright (C) 2001, 2002 Niels Möller
    
       This file is part of GNU Nettle.
    
       GNU Nettle is free software: you can redistribute it and/or
       modify it under the terms of either:
    
         * the GNU Lesser General Public License as published by the Free
           Software Foundation; either version 3 of the License, or (at your
           option) any later version.
    
       or
    
         * the GNU General Public License as published by the Free
           Software Foundation; either version 2 of the License, or (at your
           option) any later version.
    
       or both in parallel, as here.
    
       GNU Nettle is distributed in the hope that it will be useful,
       but WITHOUT ANY WARRANTY; without even the implied warranty of
       MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
       General Public License for more details.
    
       You should have received copies of the GNU General Public License and
       the GNU Lesser General Public License along with this program.  If
       not, see http://www.gnu.org/licenses/.
    */
    
    #if HAVE_CONFIG_H
    # include "config.h"
    #endif
    
    #include <string.h>
    #include <time.h>
    
    #include "rsa.h"
    
    #include "buffer.h"
    #include "pgp.h"
    
    
    /* According to RFC 2440, a public key consists of the following packets:
     *
     * Public key packet
     *
     * Zero or more revocation signatures
     *
     * One or more User ID packets
     *
     * After each User ID packet, zero or more signature packets
     *
     * Zero or more Subkey packets
     *
     * After each Subkey packet, one signature packet, optionally a
     * revocation.
     *
     * Currently, we generate a public key packet, a single user id, and a
     * signature. */
    
    int
    rsa_keypair_to_openpgp(struct nettle_buffer *buffer,
    		       const struct rsa_public_key *pub,
    		       const struct rsa_private_key *priv,
    		       /* A single user id. NUL-terminated utf8. */
    		       const char *userid)
    {
      time_t now = time(NULL);
    
      unsigned key_start;
      unsigned userid_start;
      
      struct sha1_ctx key_hash;
      struct sha1_ctx signature_hash;
      uint8_t fingerprint[SHA1_DIGEST_SIZE];
      
      key_start = buffer->size;
      
      if (!pgp_put_public_rsa_key(buffer, pub, now))
        return 0;
    
      /* userid packet */
      userid_start = buffer->size;
      if (!pgp_put_userid(buffer, strlen(userid), (const uint8_t *) userid))
        return 0;
    
      /* FIXME: We hash the key first, and then the user id. Is this right? */
      sha1_init(&key_hash);
      sha1_update(&key_hash,
    	      userid_start - key_start,
    	      buffer->contents + key_start);
    
      signature_hash = key_hash;
      sha1_digest(&key_hash, sizeof(fingerprint), fingerprint);
    
      sha1_update(&signature_hash,
    	      buffer->size - userid_start,
    	      buffer->contents + userid_start);
      
      return pgp_put_rsa_sha1_signature(buffer,
    				    priv,
    				    fingerprint + SHA1_DIGEST_SIZE - 8,
    				    PGP_SIGN_CERTIFICATION,
    				    &signature_hash);
    }