Mercurial > dropbear

annotate libtomcrypt/src/pk/katja/katja_export.c @ 577:69e98c45db7c

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- Progress for allowing specifying a listenaddr for tcp forwards
author Matt Johnston <matt@ucc.asn.au>
date Wed, 24 Feb 2010 16:13:15 +0000
parents 0cbe8f6dbf9e
children f849a5ca2efc
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382
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1 /* LibTomCrypt, modular cryptographic library -- Tom St Denis
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2 *
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3 * LibTomCrypt is a library that provides various cryptographic
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4 * algorithms in a highly modular and flexible manner.
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5 *
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6 * The library is free for all purposes without any express
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7 * guarantee it works.
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8 *
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9 * Tom St Denis, [email protected], http://libtomcrypt.com
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10 */
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11 #include "tomcrypt.h"
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12
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13 /**
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14 @file katja_export.c
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15 Export Katja PKCS-style keys, Tom St Denis
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16 */
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17
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18 #ifdef MKAT
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19
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20 /**
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21 This will export either an KatjaPublicKey or KatjaPrivateKey
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22 @param out [out] Destination of the packet
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23 @param outlen [in/out] The max size and resulting size of the packet
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24 @param type The type of exported key (PK_PRIVATE or PK_PUBLIC)
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25 @param key The Katja key to export
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26 @return CRYPT_OK if successful
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27 */
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28 int katja_export(unsigned char *out, unsigned long *outlen, int type, katja_key *key)
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29 {
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30 int err;
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31 unsigned long zero=0;
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32
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33 LTC_ARGCHK(out != NULL);
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34 LTC_ARGCHK(outlen != NULL);
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35 LTC_ARGCHK(key != NULL);
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36
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37 /* type valid? */
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38 if (!(key->type == PK_PRIVATE) && (type == PK_PRIVATE)) {
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39 return CRYPT_PK_INVALID_TYPE;
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40 }
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41
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42 if (type == PK_PRIVATE) {
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43 /* private key */
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44 /* output is
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45 Version, n, d, p, q, d mod (p-1), d mod (q - 1), 1/q mod p, pq
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46 */
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47 if ((err = der_encode_sequence_multi(out, outlen,
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48 LTC_ASN1_SHORT_INTEGER, 1UL, &zero,
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49 LTC_ASN1_INTEGER, 1UL, key->N,
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50 LTC_ASN1_INTEGER, 1UL, key->d,
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51 LTC_ASN1_INTEGER, 1UL, key->p,
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52 LTC_ASN1_INTEGER, 1UL, key->q,
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53 LTC_ASN1_INTEGER, 1UL, key->dP,
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54 LTC_ASN1_INTEGER, 1UL, key->dQ,
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55 LTC_ASN1_INTEGER, 1UL, key->qP,
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56 LTC_ASN1_INTEGER, 1UL, key->pq,
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57 LTC_ASN1_EOL, 0UL, NULL)) != CRYPT_OK) {
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58 return err;
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59 }
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60
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61 /* clear zero and return */
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62 return CRYPT_OK;
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63 } else {
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64 /* public key */
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65 return der_encode_sequence_multi(out, outlen,
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66 LTC_ASN1_INTEGER, 1UL, key->N,
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67 LTC_ASN1_EOL, 0UL, NULL);
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68 }
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69 }
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70
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71 #endif /* MRSA */
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72
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73 /* $Source: /cvs/libtom/libtomcrypt/src/pk/katja/katja_export.c,v $ */
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74 /* $Revision: 1.2 $ */
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75 /* $Date: 2006/03/31 14:15:35 $ */