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comparison libtomcrypt/src/pk/rsa/rsa_export.c @ 399:a707e6148060

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merge of '5fdf69ca60d1683cdd9f4c2595134bed26394834' and '6b61c50f4cf888bea302ac8fcf5dbb573b443251'
author Matt Johnston <matt@ucc.asn.au>
date Sat, 03 Feb 2007 08:20:34 +0000
parents 0cbe8f6dbf9e
children f849a5ca2efc
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394:17d097fc111c 399:a707e6148060
1 /* LibTomCrypt, modular cryptographic library -- Tom St Denis
2 *
3 * LibTomCrypt is a library that provides various cryptographic
4 * algorithms in a highly modular and flexible manner.
5 *
6 * The library is free for all purposes without any express
7 * guarantee it works.
8 *
9 * Tom St Denis, [email protected], http://libtomcrypt.com
10 */
11 #include "tomcrypt.h"
12
13 /**
14 @file rsa_export.c
15 Export RSA PKCS keys, Tom St Denis
16 */
17
18 #ifdef MRSA
19
20 /**
21 This will export either an RSAPublicKey or RSAPrivateKey [defined in PKCS #1 v2.1]
22 @param out [out] Destination of the packet
23 @param outlen [in/out] The max size and resulting size of the packet
24 @param type The type of exported key (PK_PRIVATE or PK_PUBLIC)
25 @param key The RSA key to export
26 @return CRYPT_OK if successful
27 */
28 int rsa_export(unsigned char *out, unsigned long *outlen, int type, rsa_key *key)
29 {
30 unsigned long zero=0;
31 LTC_ARGCHK(out != NULL);
32 LTC_ARGCHK(outlen != NULL);
33 LTC_ARGCHK(key != NULL);
34
35 /* type valid? */
36 if (!(key->type == PK_PRIVATE) && (type == PK_PRIVATE)) {
37 return CRYPT_PK_INVALID_TYPE;
38 }
39
40 if (type == PK_PRIVATE) {
41 /* private key */
42 /* output is
43 Version, n, e, d, p, q, d mod (p-1), d mod (q - 1), 1/q mod p
44 */
45 return der_encode_sequence_multi(out, outlen,
46 LTC_ASN1_SHORT_INTEGER, 1UL, &zero,
47 LTC_ASN1_INTEGER, 1UL, key->N,
48 LTC_ASN1_INTEGER, 1UL, key->e,
49 LTC_ASN1_INTEGER, 1UL, key->d,
50 LTC_ASN1_INTEGER, 1UL, key->p,
51 LTC_ASN1_INTEGER, 1UL, key->q,
52 LTC_ASN1_INTEGER, 1UL, key->dP,
53 LTC_ASN1_INTEGER, 1UL, key->dQ,
54 LTC_ASN1_INTEGER, 1UL, key->qP,
55 LTC_ASN1_EOL, 0UL, NULL);
56 } else {
57 /* public key */
58 return der_encode_sequence_multi(out, outlen,
59 LTC_ASN1_INTEGER, 1UL, key->N,
60 LTC_ASN1_INTEGER, 1UL, key->e,
61 LTC_ASN1_EOL, 0UL, NULL);
62 }
63 }
64
65 #endif /* MRSA */
66
67 /* $Source: /cvs/libtom/libtomcrypt/src/pk/rsa/rsa_export.c,v $ */
68 /* $Revision: 1.15 $ */
69 /* $Date: 2006/03/31 14:15:35 $ */