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/*
* Copyright (C) 2011 Free Software Foundation, Inc.
*
* Author: Nikos Mavrogiannopoulos
*
* This file is part of GnuTLS.
*
* The GnuTLS 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
*
*/
#include <gnutls_int.h>
#include <algorithms.h>
#include <gnutls_errors.h>
#include <x509/common.h>
/* Supported ECC curves
*/
static const gnutls_ecc_curve_entry_st ecc_curves[] = {
{
.name = "SECP224R1",
.oid = "1.3.132.0.33",
.id = GNUTLS_ECC_CURVE_SECP224R1,
.tls_id = 21,
.size = 28,
.prime = "FFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFF000000000000000000000001",
.A = "FFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFEFFFFFFFFFFFFFFFFFFFFFFFE",
.B = "B4050A850C04B3ABF54132565044B0B7D7BFD8BA270B39432355FFB4",
.order = "FFFFFFFFFFFFFFFFFFFFFFFFFFFF16A2E0B8F03E13DD29455C5C2A3D",
.Gx = "B70E0CBD6BB4BF7F321390B94A03C1D356C21122343280D6115C1D21",
.Gy = "BD376388B5F723FB4C22DFE6CD4375A05A07476444D5819985007E34",
},
{
.name = "SECP256R1",
.oid = "1.2.840.10045.3.1.7",
.id = GNUTLS_ECC_CURVE_SECP256R1,
.tls_id = 23,
.size = 32,
.prime = "FFFFFFFF00000001000000000000000000000000FFFFFFFFFFFFFFFFFFFFFFFF",
.A = "FFFFFFFF00000001000000000000000000000000FFFFFFFFFFFFFFFFFFFFFFFC",
.B = "5AC635D8AA3A93E7B3EBBD55769886BC651D06B0CC53B0F63BCE3C3E27D2604B",
.order = "FFFFFFFF00000000FFFFFFFFFFFFFFFFBCE6FAADA7179E84F3B9CAC2FC632551",
.Gx = "6B17D1F2E12C4247F8BCE6E563A440F277037D812DEB33A0F4A13945D898C296",
.Gy = "4FE342E2FE1A7F9B8EE7EB4A7C0F9E162BCE33576B315ECECBB6406837BF51F5",
},
{
.name = "SECP384R1",
.oid = "1.3.132.0.34",
.id = GNUTLS_ECC_CURVE_SECP384R1,
.tls_id = 24,
.size = 48,
.prime = "FFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFEFFFFFFFF0000000000000000FFFFFFFF",
.A = "FFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFEFFFFFFFF0000000000000000FFFFFFFC",
.B = "B3312FA7E23EE7E4988E056BE3F82D19181D9C6EFE8141120314088F5013875AC656398D8A2ED19D2A85C8EDD3EC2AEF",
.order = "FFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFC7634D81F4372DDF581A0DB248B0A77AECEC196ACCC52973",
.Gx = "AA87CA22BE8B05378EB1C71EF320AD746E1D3B628BA79B9859F741E082542A385502F25DBF55296C3A545E3872760AB7",
.Gy = "3617DE4A96262C6F5D9E98BF9292DC29F8F41DBD289A147CE9DA3113B5F0B8C00A60B1CE1D7E819D7A431D7C90EA0E5F"
},
{
.name = "SECP521R1",
.oid = "1.3.132.0.35",
.id = GNUTLS_ECC_CURVE_SECP521R1,
.tls_id = 25,
.size = 66,
.prime = "01FFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFF",
.A = "01FFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFC",
.B = "0051953EB9618E1C9A1F929A21A0B68540EEA2DA725B99B315F3B8B489918EF109E156193951EC7E937B1652C0BD3BB1BF073573DF883D2C34F1EF451FD46B503F00",
.order = "01FFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFA51868783BF2F966B7FCC0148F709A5D03BB5C9B8899C47AEBB6FB71E91386409",
.Gx = "00C6858E06B70404E9CD9E3ECB662395B4429C648139053FB521F828AF606B4D3DBAA14B5E77EFE75928FE1DC127A2FFA8DE3348B3C1856A429BF97E7E31C2E5BD66",
.Gy = "011839296A789A3BC0045C8A5FB42C7D1BD998F54449579B446817AFBD17273E662C97EE72995EF42640C550B9013FAD0761353C7086A272C24088BE94769FD16650",
},
{0, 0, 0}
};
#define GNUTLS_ECC_CURVE_LOOP(b) \
{ const gnutls_ecc_curve_entry_st *p; \
for(p = ecc_curves; p->name != NULL; p++) { b ; } }
/* Returns the TLS id of the given curve
*/
int
_gnutls_tls_id_to_ecc_curve (int num)
{
gnutls_ecc_curve_t ret = GNUTLS_ECC_CURVE_INVALID;
GNUTLS_ECC_CURVE_LOOP (
if (p->tls_id == num)
{
ret = p->id;
break;
}
);
return ret;
}
/* Maps numbers to TLS NamedCurve IDs (RFC4492).
* Returns a negative number on error.
*/
int
_gnutls_ecc_curve_get_tls_id (gnutls_ecc_curve_t supported_ecc)
{
int ret = GNUTLS_E_RECEIVED_ILLEGAL_PARAMETER;
GNUTLS_ECC_CURVE_LOOP (
if (p->id == supported_ecc)
{
ret = p->tls_id;
break;
}
);
return ret;
}
/*-
* _gnutls_oid_to_ecc_curve:
* @oid: is a curve's OID
*
* Returns: return a #gnutls_ecc_curve_t value corresponding to
* the specified OID, or %GNUTLS_ECC_CURVE_INVALID on error.
-*/
gnutls_ecc_curve_t _gnutls_oid_to_ecc_curve (const char* oid)
{
gnutls_ecc_curve_t ret = GNUTLS_ECC_CURVE_INVALID;
GNUTLS_ECC_CURVE_LOOP (
if (strcasecmp (p->oid, oid) == 0)
{
ret = p->id;
break;
}
);
return ret;
}
/*-
* _gnutls_ecc_curve_get_id:
* @name: is a MAC algorithm name
*
* The names are compared in a case insensitive way.
*
* Returns: return a #gnutls_ecc_curve_t value corresponding to
* the specified curve, or %GNUTLS_ECC_CURVE_INVALID on error.
-*/
gnutls_ecc_curve_t
_gnutls_ecc_curve_get_id (const char *name)
{
gnutls_ecc_curve_t ret = GNUTLS_ECC_CURVE_INVALID;
GNUTLS_ECC_CURVE_LOOP (
if (strcasecmp (p->name, name) == 0)
{
ret = p->id;
break;
}
);
return ret;
}
/**
* gnutls_ecc_curve_get_name:
* @curve: is an ECC curve
*
* Convert a #gnutls_ecc_curve_t value to a string.
*
* Returns: a string that contains the name of the specified
* curve or %NULL.
**/
const char *
gnutls_ecc_curve_get_name (gnutls_ecc_curve_t curve)
{
const char *ret = NULL;
GNUTLS_ECC_CURVE_LOOP(
if (p->id == curve)
{
ret = p->name;
break;
}
);
return ret;
}
/*-
* _gnutls_ecc_curve_get_oid:
* @curve: is an ECC curve
*
* Convert a #gnutls_ecc_curve_t value to a string.
*
* Returns: a string that contains the name of the specified
* curve or %NULL.
-*/
const char *
_gnutls_ecc_curve_get_oid (gnutls_ecc_curve_t curve)
{
const char *ret = NULL;
GNUTLS_ECC_CURVE_LOOP(
if (p->id == curve)
{
ret = p->oid;
break;
}
);
return ret;
}
/*-
* _gnutls_ecc_curve_get_params:
* @curve: is an ECC curve
*
* Returns the information on a curve.
*
* Returns: a pointer to #gnutls_ecc_curve_entry_st or %NULL.
-*/
const gnutls_ecc_curve_entry_st *
_gnutls_ecc_curve_get_params (gnutls_ecc_curve_t curve)
{
const gnutls_ecc_curve_entry_st *ret = NULL;
GNUTLS_ECC_CURVE_LOOP(
if (p->id == curve)
{
ret = p;
break;
}
);
return ret;
}
/**
* gnutls_ecc_curve_get_size:
* @curve: is an ECC curve
*
* Returns the size in bytes of the curve.
*
* Returns: a the size or zero.
**/
int gnutls_ecc_curve_get_size (gnutls_ecc_curve_t curve)
{
int ret = 0;
GNUTLS_ECC_CURVE_LOOP(
if (p->id == curve)
{
ret = p->size;
break;
}
);
return ret;
}
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