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|
/*
* Copyright (C) 2003, 2004, 2005, 2006, 2007, 2008, 2009 Free Software Foundation, Inc.
*
* Author: Nikos Mavrogiannopoulos
*
* This file is part of GNUTLS.
*
* The GNUTLS library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public License
* as published by the Free Software Foundation; either version 2.1 of
* the License, or (at your option) any later version.
*
* This library is distributed in the hope that it will be useful, but
* WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public
* License along with this library; if not, write to the Free Software
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA
* 02110-1301, USA
*
*/
/* Functions on OpenPGP privkey parsing
*/
#include <gnutls_int.h>
#include <gnutls_datum.h>
#include <gnutls_global.h>
#include <gnutls_errors.h>
#include <gnutls_num.h>
#include <openpgp_int.h>
#include <gnutls_openpgp.h>
#include <gnutls_cert.h>
/**
* gnutls_openpgp_privkey_init - initializes a #gnutls_openpgp_privkey_t structure
* @key: The structure to be initialized
*
* This function will initialize an OpenPGP key structure.
*
* Returns: %GNUTLS_E_SUCCESS on success, or an error code.
**/
int
gnutls_openpgp_privkey_init (gnutls_openpgp_privkey_t * key)
{
*key = gnutls_calloc (1, sizeof (gnutls_openpgp_privkey_int));
if (*key)
return 0; /* success */
return GNUTLS_E_MEMORY_ERROR;
}
/**
* gnutls_openpgp_privkey_deinit - deinitializes memory used by a #gnutls_openpgp_privkey_t structure
* @key: The structure to be initialized
*
* This function will deinitialize a key structure.
**/
void
gnutls_openpgp_privkey_deinit (gnutls_openpgp_privkey_t key)
{
if (!key)
return;
if (key->knode)
{
cdk_kbnode_release (key->knode);
key->knode = NULL;
}
gnutls_free (key);
}
/**
* gnutls_openpgp_privkey_import - import a RAW or BASE64 encoded key
* @key: The structure to store the parsed key.
* @data: The RAW or BASE64 encoded key.
* @format: One of #gnutls_openpgp_crt_fmt_t elements.
* @password: not used for now
* @flags: should be zero
*
* This function will convert the given RAW or Base64 encoded key to
* the native gnutls_openpgp_privkey_t format. The output will be
* stored in 'key'.
*
* Returns: %GNUTLS_E_SUCCESS on success, or an error code.
**/
int
gnutls_openpgp_privkey_import (gnutls_openpgp_privkey_t key,
const gnutls_datum_t * data,
gnutls_openpgp_crt_fmt_t format,
const char *password, unsigned int flags)
{
cdk_stream_t inp;
cdk_packet_t pkt;
int rc;
if (data->data == NULL || data->size == 0)
{
gnutls_assert ();
return GNUTLS_E_OPENPGP_GETKEY_FAILED;
}
if (format == GNUTLS_OPENPGP_FMT_RAW)
{
rc = cdk_kbnode_read_from_mem (&key->knode, data->data, data->size);
if (rc != 0)
{
rc = _gnutls_map_cdk_rc (rc);
gnutls_assert ();
return rc;
}
}
else
{
rc = cdk_stream_tmp_from_mem (data->data, data->size, &inp);
if (rc != 0)
{
rc = _gnutls_map_cdk_rc (rc);
gnutls_assert ();
return rc;
}
if (cdk_armor_filter_use (inp))
{
rc = cdk_stream_set_armor_flag (inp, 0);
if (rc != 0)
{
rc = _gnutls_map_cdk_rc (rc);
cdk_stream_close (inp);
gnutls_assert ();
return rc;
}
}
rc = cdk_keydb_get_keyblock (inp, &key->knode);
cdk_stream_close (inp);
if (rc != 0)
{
rc = _gnutls_map_cdk_rc (rc);
gnutls_assert ();
return rc;
}
}
/* Test if the import was successful. */
pkt = cdk_kbnode_find_packet (key->knode, CDK_PKT_SECRET_KEY);
if (pkt == NULL)
{
gnutls_assert ();
return GNUTLS_E_OPENPGP_GETKEY_FAILED;
}
return 0;
}
/**
* gnutls_openpgp_privkey_export - export a RAW or BASE64 encoded key
* @key: Holds the key.
* @format: One of gnutls_openpgp_crt_fmt_t elements.
* @password: the password that will be used to encrypt the key. (unused for now)
* @flags: zero for future compatibility
* @output_data: will contain the key base64 encoded or raw
* @output_data_size: holds the size of output_data (and will be
* replaced by the actual size of parameters)
*
* This function will convert the given key to RAW or Base64 format.
* If the buffer provided is not long enough to hold the output, then
* GNUTLS_E_SHORT_MEMORY_BUFFER will be returned.
*
* Returns: %GNUTLS_E_SUCCESS on success, or an error code.
*
* Since: 2.4.0
**/
int
gnutls_openpgp_privkey_export (gnutls_openpgp_privkey_t key,
gnutls_openpgp_crt_fmt_t format,
const char *password, unsigned int flags,
void *output_data, size_t * output_data_size)
{
/* FIXME for now we do not export encrypted keys */
return _gnutls_openpgp_export (key->knode, format, output_data,
output_data_size, 1);
}
/**
* gnutls_openpgp_privkey_get_pk_algorithm - return the key's PublicKey algorithm
* @key: is an OpenPGP key
* @bits: if bits is non null it will hold the size of the parameters' in bits
*
* This function will return the public key algorithm of an OpenPGP
* certificate.
*
* If bits is non null, it should have enough size to hold the parameters
* size in bits. For RSA the bits returned is the modulus.
* For DSA the bits returned are of the public exponent.
*
* Returns: a member of the #gnutls_pk_algorithm_t enumeration on
* success, or a negative value on error.
*
* Since: 2.4.0
**/
gnutls_pk_algorithm_t
gnutls_openpgp_privkey_get_pk_algorithm (gnutls_openpgp_privkey_t key,
unsigned int *bits)
{
cdk_packet_t pkt;
int algo;
if (!key)
{
gnutls_assert ();
return GNUTLS_PK_UNKNOWN;
}
algo = 0;
pkt = cdk_kbnode_find_packet (key->knode, CDK_PKT_SECRET_KEY);
if (pkt)
{
if (bits)
*bits = cdk_pk_get_nbits (pkt->pkt.secret_key->pk);
algo = _gnutls_openpgp_get_algo (pkt->pkt.secret_key->pk->pubkey_algo);
}
return algo;
}
int
_gnutls_openpgp_get_algo (int cdk_algo)
{
int algo;
if (is_RSA (cdk_algo))
algo = GNUTLS_PK_RSA;
else if (is_DSA (cdk_algo))
algo = GNUTLS_PK_DSA;
else
{
_gnutls_x509_log ("Unknown OpenPGP algorithm %d\n", cdk_algo);
algo = GNUTLS_PK_UNKNOWN;
}
return algo;
}
/**
* gnutls_openpgp_privkey_get_revoked_ status - Get the revoked status of the key
* @key: the structure that contains the OpenPGP private key.
*
* Get revocation status of key.
*
* Returns: true (1) if the key has been revoked, or false (0) if it
* has not, or a negative value indicates an error.
*
* Since: 2.4.0
**/
int
gnutls_openpgp_privkey_get_revoked_status (gnutls_openpgp_privkey_t key)
{
cdk_packet_t pkt;
if (!key)
{
gnutls_assert ();
return GNUTLS_E_INVALID_REQUEST;
}
pkt = cdk_kbnode_find_packet (key->knode, CDK_PKT_SECRET_KEY);
if (!pkt)
return GNUTLS_E_OPENPGP_GETKEY_FAILED;
if (pkt->pkt.secret_key->is_revoked != 0)
return 1;
return 0;
}
/**
* gnutls_openpgp_privkey_get_fingerprint - Gets the fingerprint
* @key: the raw data that contains the OpenPGP secret key.
* @fpr: the buffer to save the fingerprint, must hold at least 20 bytes.
* @fprlen: the integer to save the length of the fingerprint.
*
* Get the fingerprint of the OpenPGP key. Depends on the
* algorithm, the fingerprint can be 16 or 20 bytes.
*
* Returns: On success, 0 is returned, or an error code.
*
* Since: 2.4.0
**/
int
gnutls_openpgp_privkey_get_fingerprint (gnutls_openpgp_privkey_t key,
void *fpr, size_t * fprlen)
{
cdk_packet_t pkt;
cdk_pkt_pubkey_t pk = NULL;
if (!fpr || !fprlen)
{
gnutls_assert ();
return GNUTLS_E_INVALID_REQUEST;
}
*fprlen = 0;
pkt = cdk_kbnode_find_packet (key->knode, CDK_PKT_SECRET_KEY);
if (!pkt)
{
gnutls_assert ();
return GNUTLS_E_OPENPGP_GETKEY_FAILED;
}
pk = pkt->pkt.secret_key->pk;
*fprlen = 20;
if (is_RSA (pk->pubkey_algo) && pk->version < 4)
*fprlen = 16;
cdk_pk_get_fingerprint (pk, fpr);
return 0;
}
/**
* gnutls_openpgp_privkey_get_key_id - Gets the keyID
* @key: the structure that contains the OpenPGP secret key.
* @keyid: the buffer to save the keyid.
*
* Get key-id.
*
* Returns: the 64-bit keyID of the OpenPGP key.
*
* Since: 2.4.0
**/
int
gnutls_openpgp_privkey_get_key_id (gnutls_openpgp_privkey_t key,
gnutls_openpgp_keyid_t keyid)
{
cdk_packet_t pkt;
uint32_t kid[2];
if (!key || !keyid)
{
gnutls_assert ();
return GNUTLS_E_INVALID_REQUEST;
}
pkt = cdk_kbnode_find_packet (key->knode, CDK_PKT_SECRET_KEY);
if (!pkt)
return GNUTLS_E_OPENPGP_GETKEY_FAILED;
cdk_sk_get_keyid (pkt->pkt.secret_key, kid);
_gnutls_write_uint32 (kid[0], keyid);
_gnutls_write_uint32 (kid[1], keyid + 4);
return 0;
}
/**
* gnutls_openpgp_privkey_get_subkey_count - return the number of subkeys
* @key: is an OpenPGP key
*
* This function will return the number of subkeys present in the
* given OpenPGP certificate.
*
* Returns: the number of subkeys, or a negative value on error.
*
* Since: 2.4.0
**/
int
gnutls_openpgp_privkey_get_subkey_count (gnutls_openpgp_privkey_t key)
{
cdk_kbnode_t p, ctx;
cdk_packet_t pkt;
int subkeys;
if (key == NULL)
{
gnutls_assert ();
return 0;
}
ctx = NULL;
subkeys = 0;
while ((p = cdk_kbnode_walk (key->knode, &ctx, 0)))
{
pkt = cdk_kbnode_get_packet (p);
if (pkt->pkttype == CDK_PKT_SECRET_SUBKEY)
subkeys++;
}
return subkeys;
}
/* returns the subkey with the given index */
static cdk_packet_t
_get_secret_subkey (gnutls_openpgp_privkey_t key, unsigned int indx)
{
cdk_kbnode_t p, ctx;
cdk_packet_t pkt;
unsigned int subkeys;
ctx = NULL;
subkeys = 0;
while ((p = cdk_kbnode_walk (key->knode, &ctx, 0)))
{
pkt = cdk_kbnode_get_packet (p);
if (pkt->pkttype == CDK_PKT_SECRET_SUBKEY && indx == subkeys++)
return pkt;
}
return NULL;
}
/**
* gnutls_openpgp_privkey_get_subkey_revoked_ status - Get the revoked status of the key
* @key: the structure that contains the OpenPGP private key.
* @idx: is the subkey index
*
* Get revocation status of key.
*
* Returns: true (1) if the key has been revoked, or false (0) if it
* has not, or a negative value indicates an error.
*
* Since: 2.4.0
**/
int
gnutls_openpgp_privkey_get_subkey_revoked_status (gnutls_openpgp_privkey_t
key, unsigned int idx)
{
cdk_packet_t pkt;
if (!key)
{
gnutls_assert ();
return GNUTLS_E_INVALID_REQUEST;
}
pkt = _get_secret_subkey (key, idx);
if (!pkt)
return GNUTLS_E_OPENPGP_GETKEY_FAILED;
if (pkt->pkt.secret_key->is_revoked != 0)
return 1;
return 0;
}
/**
* gnutls_openpgp_privkey_get_subkey_pk_algorithm - return the subkey's PublicKey algorithm
* @key: is an OpenPGP key
* @idx: is the subkey index
* @bits: if bits is non null it will hold the size of the parameters' in bits
*
* This function will return the public key algorithm of a subkey of an OpenPGP
* certificate.
*
* If bits is non null, it should have enough size to hold the parameters
* size in bits. For RSA the bits returned is the modulus.
* For DSA the bits returned are of the public exponent.
*
* Returns: a member of the #gnutls_pk_algorithm_t enumeration on
* success, or a negative value on error.
*
* Since: 2.4.0
**/
gnutls_pk_algorithm_t
gnutls_openpgp_privkey_get_subkey_pk_algorithm (gnutls_openpgp_privkey_t key,
unsigned int idx,
unsigned int *bits)
{
cdk_packet_t pkt;
int algo;
if (!key)
{
gnutls_assert ();
return GNUTLS_PK_UNKNOWN;
}
pkt = _get_secret_subkey (key, idx);
algo = 0;
if (pkt)
{
if (bits)
*bits = cdk_pk_get_nbits (pkt->pkt.secret_key->pk);
algo = pkt->pkt.secret_key->pubkey_algo;
if (is_RSA (algo))
algo = GNUTLS_PK_RSA;
else if (is_DSA (algo))
algo = GNUTLS_PK_DSA;
else
algo = GNUTLS_E_UNKNOWN_PK_ALGORITHM;
}
return algo;
}
/**
* gnutls_openpgp_privkey_get_subkey_idx - Returns the subkey's index
* @key: the structure that contains the OpenPGP private key.
* @keyid: the keyid.
*
* Get index of subkey.
*
* Returns: the index of the subkey or a negative error value.
*
* Since: 2.4.0
**/
int
gnutls_openpgp_privkey_get_subkey_idx (gnutls_openpgp_privkey_t key,
const gnutls_openpgp_keyid_t keyid)
{
int ret;
uint32_t kid[2];
if (!key)
{
gnutls_assert ();
return GNUTLS_E_INVALID_REQUEST;
}
KEYID_IMPORT (kid, keyid);
ret = _gnutls_openpgp_find_subkey_idx (key->knode, kid, 1);
if (ret < 0)
{
gnutls_assert ();
}
return ret;
}
/**
* gnutls_openpgp_privkey_get_subkey_creation_time - Extract the timestamp
* @key: the structure that contains the OpenPGP private key.
* @idx: the subkey index
*
* Get subkey creation time.
*
* Returns: the timestamp when the OpenPGP key was created.
*
* Since: 2.4.0
**/
time_t
gnutls_openpgp_privkey_get_subkey_creation_time (gnutls_openpgp_privkey_t key,
unsigned int idx)
{
cdk_packet_t pkt;
time_t timestamp;
if (!key)
return (time_t) - 1;
pkt = _get_secret_subkey (key, idx);
if (pkt)
timestamp = pkt->pkt.secret_key->pk->timestamp;
else
timestamp = 0;
return timestamp;
}
/**
* gnutls_openpgp_privkey_get_subkey_expiration_time - Extract the expire date
* @key: the structure that contains the OpenPGP private key.
* @idx: the subkey index
*
* Get subkey expiration time. A value of '0' means that the key
* doesn't expire at all.
*
* Returns: the time when the OpenPGP key expires.
*
* Since: 2.4.0
**/
time_t
gnutls_openpgp_privkey_get_subkey_expiration_time (gnutls_openpgp_privkey_t
key, unsigned int idx)
{
cdk_packet_t pkt;
time_t expiredate;
if (!key)
return (time_t) - 1;
pkt = _get_secret_subkey (key, idx);
if (pkt)
expiredate = pkt->pkt.secret_key->expiredate;
else
expiredate = 0;
return expiredate;
}
/**
* gnutls_openpgp_privkey_get_subkey_id - Gets the keyID
* @key: the structure that contains the OpenPGP secret key.
* @idx: the subkey index
* @keyid: the buffer to save the keyid.
*
* Get the key-id for the subkey.
*
* Returns: the 64-bit keyID of the OpenPGP key.
*
* Since: 2.4.0
**/
int
gnutls_openpgp_privkey_get_subkey_id (gnutls_openpgp_privkey_t key,
unsigned int idx,
gnutls_openpgp_keyid_t keyid)
{
cdk_packet_t pkt;
uint32_t kid[2];
if (!key || !keyid)
{
gnutls_assert ();
return GNUTLS_E_INVALID_REQUEST;
}
pkt = _get_secret_subkey (key, idx);
if (!pkt)
return GNUTLS_E_OPENPGP_GETKEY_FAILED;
cdk_sk_get_keyid (pkt->pkt.secret_key, kid);
_gnutls_write_uint32 (kid[0], keyid);
_gnutls_write_uint32 (kid[1], keyid + 4);
return 0;
}
/**
* gnutls_openpgp_privkey_get_subkey_fingerprint - Gets the fingerprint of a subkey
* @key: the raw data that contains the OpenPGP secret key.
* @idx: the subkey index
* @fpr: the buffer to save the fingerprint, must hold at least 20 bytes.
* @fprlen: the integer to save the length of the fingerprint.
*
* Get the fingerprint of an OpenPGP subkey. Depends on the
* algorithm, the fingerprint can be 16 or 20 bytes.
*
* Returns: On success, 0 is returned, or an error code.
*
* Since: 2.4.0
**/
int
gnutls_openpgp_privkey_get_subkey_fingerprint (gnutls_openpgp_privkey_t key,
unsigned int idx,
void *fpr, size_t * fprlen)
{
cdk_packet_t pkt;
cdk_pkt_pubkey_t pk = NULL;
if (!fpr || !fprlen)
{
gnutls_assert ();
return GNUTLS_E_INVALID_REQUEST;
}
*fprlen = 0;
pkt = _get_secret_subkey (key, idx);
if (!pkt)
return GNUTLS_E_OPENPGP_GETKEY_FAILED;
pk = pkt->pkt.secret_key->pk;
*fprlen = 20;
if (is_RSA (pk->pubkey_algo) && pk->version < 4)
*fprlen = 16;
cdk_pk_get_fingerprint (pk, fpr);
return 0;
}
/* Extracts DSA and RSA parameters from a certificate.
*/
int
_gnutls_openpgp_privkey_get_mpis (gnutls_openpgp_privkey_t pkey,
uint32_t * keyid /*[2] */ ,
bigint_t * params, int *params_size)
{
int result, i;
int pk_algorithm, local_params;
cdk_packet_t pkt;
if (keyid == NULL)
pkt = cdk_kbnode_find_packet (pkey->knode, CDK_PKT_SECRET_KEY);
else
pkt = _gnutls_openpgp_find_key (pkey->knode, keyid, 1);
if (pkt == NULL)
{
gnutls_assert ();
return GNUTLS_E_OPENPGP_GETKEY_FAILED;
}
pk_algorithm =
_gnutls_openpgp_get_algo (pkt->pkt.secret_key->pk->pubkey_algo);
switch (pk_algorithm)
{
case GNUTLS_PK_RSA:
local_params = RSA_PRIVATE_PARAMS;
break;
case GNUTLS_PK_DSA:
local_params = DSA_PRIVATE_PARAMS;
break;
default:
gnutls_assert ();
return GNUTLS_E_UNSUPPORTED_CERTIFICATE_TYPE;
}
if (*params_size < local_params)
{
gnutls_assert ();
return GNUTLS_E_INTERNAL_ERROR;
}
*params_size = local_params;
for (i = 0; i < local_params; i++)
{
result = _gnutls_read_pgp_mpi (pkt, 1, i, ¶ms[i]);
if (result < 0)
{
gnutls_assert ();
goto error;
}
}
return 0;
error:
{
int j;
for (j = 0; j < i; j++)
_gnutls_mpi_release (¶ms[j]);
}
return result;
}
/* The internal version of export
*/
static int
_get_sk_rsa_raw (gnutls_openpgp_privkey_t pkey, gnutls_openpgp_keyid_t keyid,
gnutls_datum_t * m, gnutls_datum_t * e,
gnutls_datum_t * d, gnutls_datum_t * p,
gnutls_datum_t * q, gnutls_datum_t * u)
{
int pk_algorithm, ret, i;
cdk_packet_t pkt;
uint32_t kid32[2];
bigint_t params[MAX_PRIV_PARAMS_SIZE];
int params_size = MAX_PRIV_PARAMS_SIZE;
if (pkey == NULL)
{
gnutls_assert ();
return GNUTLS_E_INVALID_REQUEST;
}
KEYID_IMPORT (kid32, keyid);
pkt = _gnutls_openpgp_find_key (pkey->knode, kid32, 1);
if (pkt == NULL)
{
gnutls_assert ();
return GNUTLS_E_OPENPGP_GETKEY_FAILED;
}
pk_algorithm =
_gnutls_openpgp_get_algo (pkt->pkt.secret_key->pk->pubkey_algo);
if (pk_algorithm != GNUTLS_PK_RSA)
{
gnutls_assert ();
return GNUTLS_E_INVALID_REQUEST;
}
ret = _gnutls_openpgp_privkey_get_mpis (pkey, kid32, params, ¶ms_size);
if (ret < 0)
{
gnutls_assert ();
return ret;
}
ret = _gnutls_mpi_dprint (params[0], m);
if (ret < 0)
{
gnutls_assert ();
goto cleanup;
}
ret = _gnutls_mpi_dprint (params[1], e);
if (ret < 0)
{
gnutls_assert ();
_gnutls_free_datum (m);
goto cleanup;
}
ret = _gnutls_mpi_dprint (params[2], d);
if (ret < 0)
{
gnutls_assert ();
_gnutls_free_datum (m);
_gnutls_free_datum (e);
goto cleanup;
}
ret = _gnutls_mpi_dprint (params[3], p);
if (ret < 0)
{
gnutls_assert ();
_gnutls_free_datum (m);
_gnutls_free_datum (e);
_gnutls_free_datum (d);
goto cleanup;
}
ret = _gnutls_mpi_dprint (params[4], q);
if (ret < 0)
{
gnutls_assert ();
_gnutls_free_datum (m);
_gnutls_free_datum (e);
_gnutls_free_datum (d);
_gnutls_free_datum (p);
goto cleanup;
}
ret = _gnutls_mpi_dprint (params[5], u);
if (ret < 0)
{
gnutls_assert ();
_gnutls_free_datum (q);
_gnutls_free_datum (m);
_gnutls_free_datum (e);
_gnutls_free_datum (d);
_gnutls_free_datum (p);
goto cleanup;
}
ret = 0;
cleanup:
for (i = 0; i < params_size; i++)
{
_gnutls_mpi_release (¶ms[i]);
}
return ret;
}
static int
_get_sk_dsa_raw (gnutls_openpgp_privkey_t pkey, gnutls_openpgp_keyid_t keyid,
gnutls_datum_t * p, gnutls_datum_t * q,
gnutls_datum_t * g, gnutls_datum_t * y, gnutls_datum_t * x)
{
int pk_algorithm, ret, i;
cdk_packet_t pkt;
uint32_t kid32[2];
bigint_t params[MAX_PRIV_PARAMS_SIZE];
int params_size = MAX_PRIV_PARAMS_SIZE;
if (pkey == NULL)
{
gnutls_assert ();
return GNUTLS_E_INVALID_REQUEST;
}
KEYID_IMPORT (kid32, keyid);
pkt = _gnutls_openpgp_find_key (pkey->knode, kid32, 1);
if (pkt == NULL)
{
gnutls_assert ();
return GNUTLS_E_OPENPGP_GETKEY_FAILED;
}
pk_algorithm =
_gnutls_openpgp_get_algo (pkt->pkt.secret_key->pk->pubkey_algo);
if (pk_algorithm != GNUTLS_PK_DSA)
{
gnutls_assert ();
return GNUTLS_E_INVALID_REQUEST;
}
ret = _gnutls_openpgp_privkey_get_mpis (pkey, kid32, params, ¶ms_size);
if (ret < 0)
{
gnutls_assert ();
return ret;
}
/* P */
ret = _gnutls_mpi_dprint (params[0], p);
if (ret < 0)
{
gnutls_assert ();
goto cleanup;
}
/* Q */
ret = _gnutls_mpi_dprint (params[1], q);
if (ret < 0)
{
gnutls_assert ();
_gnutls_free_datum (p);
goto cleanup;
}
/* G */
ret = _gnutls_mpi_dprint (params[2], g);
if (ret < 0)
{
gnutls_assert ();
_gnutls_free_datum (p);
_gnutls_free_datum (q);
goto cleanup;
}
/* Y */
ret = _gnutls_mpi_dprint (params[3], y);
if (ret < 0)
{
gnutls_assert ();
_gnutls_free_datum (p);
_gnutls_free_datum (g);
_gnutls_free_datum (q);
goto cleanup;
}
ret = _gnutls_mpi_dprint (params[4], x);
if (ret < 0)
{
gnutls_assert ();
_gnutls_free_datum (y);
_gnutls_free_datum (p);
_gnutls_free_datum (g);
_gnutls_free_datum (q);
goto cleanup;
}
ret = 0;
cleanup:
for (i = 0; i < params_size; i++)
{
_gnutls_mpi_release (¶ms[i]);
}
return ret;
}
/**
* gnutls_openpgp_privkey_export_rsa_raw - This function will export the RSA private key
* @pkey: Holds the certificate
* @m: will hold the modulus
* @e: will hold the public exponent
* @d: will hold the private exponent
* @p: will hold the first prime (p)
* @q: will hold the second prime (q)
* @u: will hold the coefficient
*
* This function will export the RSA private key's parameters found in
* the given structure. The new parameters will be allocated using
* gnutls_malloc() and will be stored in the appropriate datum.
*
* Returns: %GNUTLS_E_SUCCESS on success, otherwise an error.
*
* Since: 2.4.0
**/
int
gnutls_openpgp_privkey_export_rsa_raw (gnutls_openpgp_privkey_t pkey,
gnutls_datum_t * m, gnutls_datum_t * e,
gnutls_datum_t * d, gnutls_datum_t * p,
gnutls_datum_t * q, gnutls_datum_t * u)
{
gnutls_openpgp_keyid_t keyid;
int ret;
ret = gnutls_openpgp_privkey_get_key_id (pkey, keyid);
if (ret < 0)
{
gnutls_assert ();
return ret;
}
return _get_sk_rsa_raw (pkey, keyid, m, e, d, p, q, u);
}
/**
* gnutls_openpgp_privkey_export_dsa_raw - This function will export the DSA private key
* @pkey: Holds the certificate
* @p: will hold the p
* @q: will hold the q
* @g: will hold the g
* @y: will hold the y
* @x: will hold the x
*
* This function will export the DSA private key's parameters found in
* the given certificate. The new parameters will be allocated using
* gnutls_malloc() and will be stored in the appropriate datum.
*
* Returns: %GNUTLS_E_SUCCESS on success, otherwise an error.
*
* Since: 2.4.0
**/
int
gnutls_openpgp_privkey_export_dsa_raw (gnutls_openpgp_privkey_t pkey,
gnutls_datum_t * p, gnutls_datum_t * q,
gnutls_datum_t * g, gnutls_datum_t * y,
gnutls_datum_t * x)
{
gnutls_openpgp_keyid_t keyid;
int ret;
ret = gnutls_openpgp_privkey_get_key_id (pkey, keyid);
if (ret < 0)
{
gnutls_assert ();
return ret;
}
return _get_sk_dsa_raw (pkey, keyid, p, q, g, y, x);
}
/**
* gnutls_openpgp_privkey_export_subkey_rsa_raw - export the RSA private key
* @pkey: Holds the certificate
* @idx: Is the subkey index
* @m: will hold the modulus
* @e: will hold the public exponent
* @d: will hold the private exponent
* @p: will hold the first prime (p)
* @q: will hold the second prime (q)
* @u: will hold the coefficient
*
* This function will export the RSA private key's parameters found in
* the given structure. The new parameters will be allocated using
* gnutls_malloc() and will be stored in the appropriate datum.
*
* Returns: %GNUTLS_E_SUCCESS on success, otherwise an error.
*
* Since: 2.4.0
**/
int
gnutls_openpgp_privkey_export_subkey_rsa_raw (gnutls_openpgp_privkey_t pkey,
unsigned int idx,
gnutls_datum_t * m,
gnutls_datum_t * e,
gnutls_datum_t * d,
gnutls_datum_t * p,
gnutls_datum_t * q,
gnutls_datum_t * u)
{
gnutls_openpgp_keyid_t keyid;
int ret;
ret = gnutls_openpgp_privkey_get_subkey_id (pkey, idx, keyid);
if (ret < 0)
{
gnutls_assert ();
return ret;
}
return _get_sk_rsa_raw (pkey, keyid, m, e, d, p, q, u);
}
/**
* gnutls_openpgp_privkey_export_subkey_dsa_raw - export the DSA private key
* @pkey: Holds the certificate
* @idx: Is the subkey index
* @p: will hold the p
* @q: will hold the q
* @g: will hold the g
* @y: will hold the y
* @x: will hold the x
*
* This function will export the DSA private key's parameters found
* in the given certificate. The new parameters will be allocated
* using gnutls_malloc() and will be stored in the appropriate datum.
*
* Returns: %GNUTLS_E_SUCCESS on success, otherwise an error.
*
* Since: 2.4.0
**/
int
gnutls_openpgp_privkey_export_subkey_dsa_raw (gnutls_openpgp_privkey_t pkey,
unsigned int idx,
gnutls_datum_t * p,
gnutls_datum_t * q,
gnutls_datum_t * g,
gnutls_datum_t * y,
gnutls_datum_t * x)
{
gnutls_openpgp_keyid_t keyid;
int ret;
ret = gnutls_openpgp_privkey_get_subkey_id (pkey, idx, keyid);
if (ret < 0)
{
gnutls_assert ();
return ret;
}
return _get_sk_dsa_raw (pkey, keyid, p, q, g, y, x);
}
/**
* gnutls_openpgp_privkey_get_preferred_key_id - Gets the preferred keyID
* @key: the structure that contains the OpenPGP public key.
* @keyid: the struct to save the keyid.
*
* Get the preferred key-id for the key.
*
* Returns: the 64-bit preferred keyID of the OpenPGP key, or if it
* hasn't been set it returns %GNUTLS_E_INVALID_REQUEST.
**/
int
gnutls_openpgp_privkey_get_preferred_key_id (gnutls_openpgp_privkey_t key,
gnutls_openpgp_keyid_t keyid)
{
if (!key || !keyid || !key->preferred_set)
{
gnutls_assert ();
return GNUTLS_E_INVALID_REQUEST;
}
memcpy (keyid, key->preferred_keyid, sizeof (gnutls_openpgp_keyid_t));
return 0;
}
/**
* gnutls_openpgp_privkey_set_preferred_key_id - Set the preferred keyID
* @key: the structure that contains the OpenPGP public key.
* @keyid: the selected keyid
*
* This allows setting a preferred key id for the given certificate.
* This key will be used by functions that involve key handling.
*
* Returns: On success, 0 is returned, or an error code.
**/
int
gnutls_openpgp_privkey_set_preferred_key_id (gnutls_openpgp_privkey_t key,
const gnutls_openpgp_keyid_t
keyid)
{
int ret;
if (!key)
{
gnutls_assert ();
return GNUTLS_E_INVALID_REQUEST;
}
/* check if the id is valid */
ret = gnutls_openpgp_privkey_get_subkey_idx (key, keyid);
if (ret < 0)
{
_gnutls_x509_log ("the requested subkey does not exist\n");
gnutls_assert ();
return ret;
}
key->preferred_set = 1;
memcpy (key->preferred_keyid, keyid, sizeof (gnutls_openpgp_keyid_t));
return 0;
}
|