int silc_pkcs1_import_private_key(unsigned char *key,
SilcUInt32 key_len,
void **ret_private_key)
{
SilcAsn1 asn1;
SilcBufferStruct alg_key;
RsaPrivateKey *privkey;
SilcUInt32 ver;
if (!ret_private_key)
return 0;
asn1 = silc_asn1_alloc();
if (!asn1)
return 0;
/* Allocate RSA private key */
*ret_private_key = privkey = silc_calloc(1, sizeof(*privkey));
if (!privkey)
goto err;
/* Parse the PKCS #1 private key */
silc_buffer_set(&alg_key, key, key_len);
if (!silc_asn1_decode(asn1, &alg_key,
SILC_ASN1_OPTS(SILC_ASN1_ALLOC),
SILC_ASN1_SEQUENCE,
SILC_ASN1_SHORT_INT(&ver),
SILC_ASN1_INT(&privkey->n),
SILC_ASN1_INT(&privkey->e),
SILC_ASN1_INT(&privkey->d),
SILC_ASN1_INT(&privkey->p),
SILC_ASN1_INT(&privkey->q),
SILC_ASN1_INT(&privkey->dP),
SILC_ASN1_INT(&privkey->dQ),
SILC_ASN1_INT(&privkey->qP),
SILC_ASN1_END, SILC_ASN1_END))
goto err;
if (ver != 0)
goto err;
/* Set key length */
privkey->bits = ((silc_mp_sizeinbase(&privkey->n, 2) + 7) / 8) * 8;
silc_asn1_free(asn1);
return key_len;
err:
silc_free(privkey);
silc_asn1_free(asn1);
return 0;
}
unsigned char *silc_mp_mp2bin(SilcMPInt *val, SilcUInt32 len,
SilcUInt32 *ret_len)
{
SilcUInt32 size;
unsigned char *ret;
size = (len ? len : ((silc_mp_sizeinbase(val, 2) + 7) / 8));
ret = silc_calloc(size, sizeof(*ret));
if (!ret)
return NULL;
silc_mp_mp2bin_noalloc(val, ret, size);
if (ret_len)
*ret_len = size;
return ret;
}
int silc_pkcs1_import_public_key(unsigned char *key,
SilcUInt32 key_len,
void **ret_public_key)
{
SilcAsn1 asn1 = NULL;
SilcBufferStruct alg_key;
RsaPublicKey *pubkey;
if (!ret_public_key)
return 0;
asn1 = silc_asn1_alloc();
if (!asn1)
return 0;
/* Allocate RSA public key */
*ret_public_key = pubkey = silc_calloc(1, sizeof(*pubkey));
if (!pubkey)
goto err;
/* Parse the PKCS #1 public key */
silc_buffer_set(&alg_key, key, key_len);
if (!silc_asn1_decode(asn1, &alg_key,
SILC_ASN1_OPTS(SILC_ASN1_ALLOC),
SILC_ASN1_SEQUENCE,
SILC_ASN1_INT(&pubkey->n),
SILC_ASN1_INT(&pubkey->e),
SILC_ASN1_END, SILC_ASN1_END))
goto err;
/* Set key length */
pubkey->bits = ((silc_mp_sizeinbase(&pubkey->n, 2) + 7) / 8) * 8;
silc_asn1_free(asn1);
return key_len;
err:
silc_free(pubkey);
silc_asn1_free(asn1);
return 0;
}