/* 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. */ #include "tomcrypt.h" #ifdef LTC_MRSA /** Import RSA key from raw numbers @param N RSA's N @param Nlen RSA's N's length @param e RSA's e @param elen RSA's e's length @param d RSA's d (only private key, NULL for public key) @param dlen RSA's d's length @param key [out] the destination for the imported key @return CRYPT_OK if successful */ int rsa_set_key(const unsigned char *N, unsigned long Nlen, const unsigned char *e, unsigned long elen, const unsigned char *d, unsigned long dlen, 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_unsigned_bin(key->N , (unsigned char *)N , Nlen)) != CRYPT_OK) { goto LBL_ERR; } if ((err = mp_read_unsigned_bin(key->e , (unsigned char *)e , elen)) != CRYPT_OK) { goto LBL_ERR; } if (d && dlen) { if ((err = mp_read_unsigned_bin(key->d , (unsigned char *)d , dlen)) != CRYPT_OK) { goto LBL_ERR; } key->type = PK_PRIVATE; } else { key->type = PK_PUBLIC; } return CRYPT_OK; LBL_ERR: rsa_free(key); return err; } /** Import factors of an RSA key from raw numbers Only for private keys. @param p RSA's p @param plen RSA's p's length @param q RSA's q @param qlen RSA's q's length @param key [out] the destination for the imported key @return CRYPT_OK if successful */ int rsa_set_factors(const unsigned char *p, unsigned long plen, const unsigned char *q, unsigned long qlen, rsa_key *key) { int err; LTC_ARGCHK(key != NULL); LTC_ARGCHK(p != NULL); LTC_ARGCHK(q != NULL); LTC_ARGCHK(ltc_mp.name != NULL); if (key->type != PK_PRIVATE) return CRYPT_PK_TYPE_MISMATCH; if ((err = mp_read_unsigned_bin(key->p , (unsigned char *)p , plen)) != CRYPT_OK) { goto LBL_ERR; } if ((err = mp_read_unsigned_bin(key->q , (unsigned char *)q , qlen)) != CRYPT_OK) { goto LBL_ERR; } return CRYPT_OK; LBL_ERR: rsa_free(key); return err; } /** Import CRT parameters of an RSA key from raw numbers Only for private keys. @param dP RSA's dP @param dPlen RSA's dP's length @param dQ RSA's dQ @param dQlen RSA's dQ's length @param qP RSA's qP @param qPlen RSA's qP's length @param key [out] the destination for the imported key @return CRYPT_OK if successful */ int rsa_set_crt_params(const unsigned char *dP, unsigned long dPlen, const unsigned char *dQ, unsigned long dQlen, const unsigned char *qP, unsigned long qPlen, rsa_key *key) { int err; LTC_ARGCHK(key != NULL); LTC_ARGCHK(dP != NULL); LTC_ARGCHK(dQ != NULL); LTC_ARGCHK(qP != NULL); LTC_ARGCHK(ltc_mp.name != NULL); if (key->type != PK_PRIVATE) return CRYPT_PK_TYPE_MISMATCH; if ((err = mp_read_unsigned_bin(key->dP, (unsigned char *)dP, dPlen)) != CRYPT_OK) { goto LBL_ERR; } if ((err = mp_read_unsigned_bin(key->dQ, (unsigned char *)dQ, dQlen)) != CRYPT_OK) { goto LBL_ERR; } if ((err = mp_read_unsigned_bin(key->qP, (unsigned char *)qP, qPlen)) != CRYPT_OK) { goto LBL_ERR; } return CRYPT_OK; LBL_ERR: rsa_free(key); return err; } #endif /* LTC_MRSA */ /* ref: $Format:%D$ */ /* git commit: $Format:%H$ */ /* commit time: $Format:%ai$ */