/* LibTomCrypt, modular cryptographic library -- Tom St Denis
*
* LibTomCrypt is a library that provides various cryptographic
* algorithms in a highly modular and flexible manner.
*
* The library is free for all purposes without any express
* guarantee it works.
*
* Tom St Denis, tomstdenis@gmail.com, http://libtom.org
*/
#include "tomcrypt.h"
/**
@file rsa_import_hex.c
Import a PKCS RSA key
*/
#ifdef LTC_MRSA
int rsa_import_hex(char *N, char *e, char *d, char *p, char *q, char *dP, char *dQ, char *qP, rsa_key *key)
{
int err;
LTC_ARGCHK(key != NULL);
LTC_ARGCHK(N != NULL);
LTC_ARGCHK(e != NULL);
LTC_ARGCHK(ltc_mp.name != NULL);
err = mp_init_multi(&key->e, &key->d, &key->N, &key->dQ, &key->dP, &key->qP, &key->p, &key->q, NULL);
if (err != CRYPT_OK) return err;
if ((err = mp_read_radix(key->N , N , 16)) != CRYPT_OK) { goto LBL_ERR; }
if ((err = mp_read_radix(key->e , e , 16)) != CRYPT_OK) { goto LBL_ERR; }
if (d && p && q && dP && dQ && qP && strlen(d)>0 && strlen(p)>0 &&
strlen(q)>0 && strlen(dP)>0 && strlen(dQ)>0 && strlen(qP)>0) {
if ((err = mp_read_radix(key->d , d , 16)) != CRYPT_OK) { goto LBL_ERR; }
if ((err = mp_read_radix(key->p , p , 16)) != CRYPT_OK) { goto LBL_ERR; }
if ((err = mp_read_radix(key->q , q , 16)) != CRYPT_OK) { goto LBL_ERR; }
if ((err = mp_read_radix(key->dP, dP, 16)) != CRYPT_OK) { goto LBL_ERR; }
if ((err = mp_read_radix(key->dQ, dQ, 16)) != CRYPT_OK) { goto LBL_ERR; }
if ((err = mp_read_radix(key->qP, qP, 16)) != CRYPT_OK) { goto LBL_ERR; }
key->type = PK_PRIVATE;
}
else {
key->type = PK_PUBLIC;
}
return CRYPT_OK;
LBL_ERR:
mp_clear_multi(key->d, key->e, key->N, key->dQ, key->dP, key->qP, key->p, key->q, NULL);
return err;
}
#endif /* LTC_MRSA */