1f7fc46c63fdc8f39234fea409b8dbe116d73ebf8The Android Open Source Project/* LibTomCrypt, modular cryptographic library -- Tom St Denis 2f7fc46c63fdc8f39234fea409b8dbe116d73ebf8The Android Open Source Project * 3f7fc46c63fdc8f39234fea409b8dbe116d73ebf8The Android Open Source Project * LibTomCrypt is a library that provides various cryptographic 4f7fc46c63fdc8f39234fea409b8dbe116d73ebf8The Android Open Source Project * algorithms in a highly modular and flexible manner. 5f7fc46c63fdc8f39234fea409b8dbe116d73ebf8The Android Open Source Project * 6f7fc46c63fdc8f39234fea409b8dbe116d73ebf8The Android Open Source Project * The library is free for all purposes without any express 7f7fc46c63fdc8f39234fea409b8dbe116d73ebf8The Android Open Source Project * guarantee it works. 8f7fc46c63fdc8f39234fea409b8dbe116d73ebf8The Android Open Source Project * 9f7fc46c63fdc8f39234fea409b8dbe116d73ebf8The Android Open Source Project * Tom St Denis, tomstdenis@gmail.com, http://libtomcrypt.com 10f7fc46c63fdc8f39234fea409b8dbe116d73ebf8The Android Open Source Project */ 11f7fc46c63fdc8f39234fea409b8dbe116d73ebf8The Android Open Source Project#include "tomcrypt.h" 12f7fc46c63fdc8f39234fea409b8dbe116d73ebf8The Android Open Source Project 13f7fc46c63fdc8f39234fea409b8dbe116d73ebf8The Android Open Source Project/** 14f7fc46c63fdc8f39234fea409b8dbe116d73ebf8The Android Open Source Project @file katja_import.c 15f7fc46c63fdc8f39234fea409b8dbe116d73ebf8The Android Open Source Project Import a PKCS-style Katja key, Tom St Denis 16f7fc46c63fdc8f39234fea409b8dbe116d73ebf8The Android Open Source Project*/ 17f7fc46c63fdc8f39234fea409b8dbe116d73ebf8The Android Open Source Project 18f7fc46c63fdc8f39234fea409b8dbe116d73ebf8The Android Open Source Project#ifdef MKAT 19f7fc46c63fdc8f39234fea409b8dbe116d73ebf8The Android Open Source Project 20f7fc46c63fdc8f39234fea409b8dbe116d73ebf8The Android Open Source Project/** 21f7fc46c63fdc8f39234fea409b8dbe116d73ebf8The Android Open Source Project Import an KatjaPublicKey or KatjaPrivateKey [two-prime only, only support >= 1024-bit keys, defined in PKCS #1 v2.1] 22f7fc46c63fdc8f39234fea409b8dbe116d73ebf8The Android Open Source Project @param in The packet to import from 23f7fc46c63fdc8f39234fea409b8dbe116d73ebf8The Android Open Source Project @param inlen It's length (octets) 24f7fc46c63fdc8f39234fea409b8dbe116d73ebf8The Android Open Source Project @param key [out] Destination for newly imported key 25f7fc46c63fdc8f39234fea409b8dbe116d73ebf8The Android Open Source Project @return CRYPT_OK if successful, upon error allocated memory is freed 26f7fc46c63fdc8f39234fea409b8dbe116d73ebf8The Android Open Source Project*/ 27f7fc46c63fdc8f39234fea409b8dbe116d73ebf8The Android Open Source Projectint katja_import(const unsigned char *in, unsigned long inlen, katja_key *key) 28f7fc46c63fdc8f39234fea409b8dbe116d73ebf8The Android Open Source Project{ 29f7fc46c63fdc8f39234fea409b8dbe116d73ebf8The Android Open Source Project int err; 30f7fc46c63fdc8f39234fea409b8dbe116d73ebf8The Android Open Source Project void *zero; 31f7fc46c63fdc8f39234fea409b8dbe116d73ebf8The Android Open Source Project 32f7fc46c63fdc8f39234fea409b8dbe116d73ebf8The Android Open Source Project LTC_ARGCHK(in != NULL); 33f7fc46c63fdc8f39234fea409b8dbe116d73ebf8The Android Open Source Project LTC_ARGCHK(key != NULL); 34f7fc46c63fdc8f39234fea409b8dbe116d73ebf8The Android Open Source Project LTC_ARGCHK(ltc_mp.name != NULL); 35f7fc46c63fdc8f39234fea409b8dbe116d73ebf8The Android Open Source Project 36f7fc46c63fdc8f39234fea409b8dbe116d73ebf8The Android Open Source Project /* init key */ 37f7fc46c63fdc8f39234fea409b8dbe116d73ebf8The Android Open Source Project if ((err = mp_init_multi(&zero, &key->d, &key->N, &key->dQ, 38f7fc46c63fdc8f39234fea409b8dbe116d73ebf8The Android Open Source Project &key->dP, &key->qP, &key->p, &key->q, &key->pq, NULL)) != CRYPT_OK) { 39f7fc46c63fdc8f39234fea409b8dbe116d73ebf8The Android Open Source Project return err; 40f7fc46c63fdc8f39234fea409b8dbe116d73ebf8The Android Open Source Project } 41f7fc46c63fdc8f39234fea409b8dbe116d73ebf8The Android Open Source Project 42f7fc46c63fdc8f39234fea409b8dbe116d73ebf8The Android Open Source Project if ((err = der_decode_sequence_multi(in, inlen, 43f7fc46c63fdc8f39234fea409b8dbe116d73ebf8The Android Open Source Project LTC_ASN1_INTEGER, 1UL, key->N, 44f7fc46c63fdc8f39234fea409b8dbe116d73ebf8The Android Open Source Project LTC_ASN1_EOL, 0UL, NULL)) != CRYPT_OK) { 45f7fc46c63fdc8f39234fea409b8dbe116d73ebf8The Android Open Source Project goto LBL_ERR; 46f7fc46c63fdc8f39234fea409b8dbe116d73ebf8The Android Open Source Project } 47f7fc46c63fdc8f39234fea409b8dbe116d73ebf8The Android Open Source Project 48f7fc46c63fdc8f39234fea409b8dbe116d73ebf8The Android Open Source Project if (mp_cmp_d(key->N, 0) == LTC_MP_EQ) { 49f7fc46c63fdc8f39234fea409b8dbe116d73ebf8The Android Open Source Project /* it's a private key */ 50f7fc46c63fdc8f39234fea409b8dbe116d73ebf8The Android Open Source Project if ((err = der_decode_sequence_multi(in, inlen, 51f7fc46c63fdc8f39234fea409b8dbe116d73ebf8The Android Open Source Project LTC_ASN1_INTEGER, 1UL, zero, 52f7fc46c63fdc8f39234fea409b8dbe116d73ebf8The Android Open Source Project LTC_ASN1_INTEGER, 1UL, key->N, 53f7fc46c63fdc8f39234fea409b8dbe116d73ebf8The Android Open Source Project LTC_ASN1_INTEGER, 1UL, key->d, 54f7fc46c63fdc8f39234fea409b8dbe116d73ebf8The Android Open Source Project LTC_ASN1_INTEGER, 1UL, key->p, 55f7fc46c63fdc8f39234fea409b8dbe116d73ebf8The Android Open Source Project LTC_ASN1_INTEGER, 1UL, key->q, 56f7fc46c63fdc8f39234fea409b8dbe116d73ebf8The Android Open Source Project LTC_ASN1_INTEGER, 1UL, key->dP, 57f7fc46c63fdc8f39234fea409b8dbe116d73ebf8The Android Open Source Project LTC_ASN1_INTEGER, 1UL, key->dQ, 58f7fc46c63fdc8f39234fea409b8dbe116d73ebf8The Android Open Source Project LTC_ASN1_INTEGER, 1UL, key->qP, 59f7fc46c63fdc8f39234fea409b8dbe116d73ebf8The Android Open Source Project LTC_ASN1_INTEGER, 1UL, key->pq, 60f7fc46c63fdc8f39234fea409b8dbe116d73ebf8The Android Open Source Project LTC_ASN1_EOL, 0UL, NULL)) != CRYPT_OK) { 61f7fc46c63fdc8f39234fea409b8dbe116d73ebf8The Android Open Source Project goto LBL_ERR; 62f7fc46c63fdc8f39234fea409b8dbe116d73ebf8The Android Open Source Project } 63f7fc46c63fdc8f39234fea409b8dbe116d73ebf8The Android Open Source Project key->type = PK_PRIVATE; 64f7fc46c63fdc8f39234fea409b8dbe116d73ebf8The Android Open Source Project } else { 65f7fc46c63fdc8f39234fea409b8dbe116d73ebf8The Android Open Source Project /* public we have N */ 66f7fc46c63fdc8f39234fea409b8dbe116d73ebf8The Android Open Source Project key->type = PK_PUBLIC; 67f7fc46c63fdc8f39234fea409b8dbe116d73ebf8The Android Open Source Project } 68f7fc46c63fdc8f39234fea409b8dbe116d73ebf8The Android Open Source Project mp_clear(zero); 69f7fc46c63fdc8f39234fea409b8dbe116d73ebf8The Android Open Source Project return CRYPT_OK; 70f7fc46c63fdc8f39234fea409b8dbe116d73ebf8The Android Open Source ProjectLBL_ERR: 71f7fc46c63fdc8f39234fea409b8dbe116d73ebf8The Android Open Source Project mp_clear_multi(zero, key->d, key->N, key->dQ, key->dP, 72f7fc46c63fdc8f39234fea409b8dbe116d73ebf8The Android Open Source Project key->qP, key->p, key->q, key->pq, NULL); 73f7fc46c63fdc8f39234fea409b8dbe116d73ebf8The Android Open Source Project return err; 74f7fc46c63fdc8f39234fea409b8dbe116d73ebf8The Android Open Source Project} 75f7fc46c63fdc8f39234fea409b8dbe116d73ebf8The Android Open Source Project 76f7fc46c63fdc8f39234fea409b8dbe116d73ebf8The Android Open Source Project#endif /* MRSA */ 77f7fc46c63fdc8f39234fea409b8dbe116d73ebf8The Android Open Source Project 78f7fc46c63fdc8f39234fea409b8dbe116d73ebf8The Android Open Source Project 79f7fc46c63fdc8f39234fea409b8dbe116d73ebf8The Android Open Source Project/* $Source: /cvs/libtom/libtomcrypt/src/pk/katja/katja_import.c,v $ */ 80f7fc46c63fdc8f39234fea409b8dbe116d73ebf8The Android Open Source Project/* $Revision: 1.3 $ */ 81f7fc46c63fdc8f39234fea409b8dbe116d73ebf8The Android Open Source Project/* $Date: 2006/03/31 14:15:35 $ */ 82