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Added support of EdDSA signatures

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This commit is contained in:
Andreas Steffen
2016-12-14 11:15:47 +01:00
committed by Tobias Brunner
parent 564a199674
commit 35bc60cc68
31 changed files with 900 additions and 55 deletions
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src/libstrongswan/asn1/asn1.c
+3 -1
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@@ -1,6 +1,6 @@
/*
* Copyright (C) 2006 Martin Will
* Copyright (C) 2000-2008 Andreas Steffen
* Copyright (C) 2000-2016 Andreas Steffen
*
* Hochschule fuer Technik Rapperswil
*
@@ -47,6 +47,8 @@ chunk_t asn1_algorithmIdentifier(int oid)
case OID_ECDSA_WITH_SHA256:
case OID_ECDSA_WITH_SHA384:
case OID_ECDSA_WITH_SHA512:
case OID_ED25519:
case OID_ED448:
parameters = chunk_empty;
break;
default:
src/libstrongswan/asn1/oid.txt
+3
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@@ -382,6 +382,9 @@
0x0C "brainpoolP384t1"
0x0D "brainpoolP512r1"
0x0E "brainpoolP512t1"
0x65 "Thawte"
0x70 "id-Ed25519" OID_ED25519
0x71 "id-Ed448" OID_ED448
0x81 ""
0x04 "Certicom"
0x00 "curve"
src/libstrongswan/credentials/builder.c
+3 -1
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@@ -1,6 +1,7 @@
/*
* Copyright (C) 2008 Martin Willi
* Hochschule fuer Technik Rapperswil
* Copyright (C) 2016 Andreas Steffen
* HSR Hochschule fuer Technik Rapperswil
*
* This program is free software; you can redistribute it and/or modify it
* under the terms of the GNU General Public License as published by the
@@ -70,5 +71,6 @@ ENUM(builder_part_names, BUILD_FROM_FILE, BUILD_END,
"BUILD_SAFE_PRIMES",
"BUILD_SHARES",
"BUILD_THRESHOLD",
"BUILD_EDDSA_PRIV_ASN1_DER",
"BUILD_END",
);
src/libstrongswan/credentials/builder.h
+4 -1
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@@ -1,6 +1,7 @@
/*
* Copyright (C) 2008 Martin Willi
* Hochschule fuer Technik Rapperswil
* Copyright (C) 2016 Andreas Steffen
* HSR Hochschule fuer Technik Rapperswil
*
* This program is free software; you can redistribute it and/or modify it
* under the terms of the GNU General Public License as published by the
@@ -151,6 +152,8 @@ enum builder_part_t {
BUILD_SHARES,
/** minimum number of participating private key shares */
BUILD_THRESHOLD,
/** DER encoded ASN.1 EdDSA private key */
BUILD_EDDSA_PRIV_ASN1_DER,
/** end of variable argument builder list */
BUILD_END,
};
src/libstrongswan/credentials/cred_encoding.h
+4
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@@ -144,6 +144,10 @@ enum cred_encoding_part_t {
CRED_PART_PKCS10_ASN1_DER,
/** a PGP encoded certificate */
CRED_PART_PGP_CERT,
/** a DER encoded EdDSA public key */
CRED_PART_EDDSA_PUB_ASN1_DER,
/** a DER encoded EdDSA private key */
CRED_PART_EDDSA_PRIV_ASN1_DER,
/** a DER encoded BLISS public key */
CRED_PART_BLISS_PUB_ASN1_DER,
/** a DER encoded BLISS private key */
src/libstrongswan/credentials/keys/public_key.c
+27 -9
View File
@@ -24,6 +24,8 @@ ENUM(key_type_names, KEY_ANY, KEY_BLISS,
"RSA",
"ECDSA",
"DSA",
"ED25519",
"ED448",
"BLISS"
);
@@ -48,6 +50,8 @@ ENUM(signature_scheme_names, SIGN_UNKNOWN, SIGN_BLISS_WITH_SHA3_512,
"ECDSA-256",
"ECDSA-384",
"ECDSA-521",
"ED25519",
"ED448",
"BLISS_WITH_SHA2_256",
"BLISS_WITH_SHA2_384",
"BLISS_WITH_SHA2_512",
@@ -151,6 +155,10 @@ signature_scheme_t signature_scheme_from_oid(int oid)
return SIGN_ECDSA_WITH_SHA384_DER;
case OID_ECDSA_WITH_SHA512:
return SIGN_ECDSA_WITH_SHA512_DER;
case OID_ED25519:
return SIGN_ED25519;
case OID_ED448:
return SIGN_ED448;
case OID_BLISS_PUBLICKEY:
case OID_BLISS_WITH_SHA2_512:
return SIGN_BLISS_WITH_SHA2_512;
@@ -210,6 +218,10 @@ int signature_scheme_to_oid(signature_scheme_t scheme)
return OID_ECDSA_WITH_SHA384;
case SIGN_ECDSA_WITH_SHA512_DER:
return OID_ECDSA_WITH_SHA512;
case SIGN_ED25519:
return OID_ED25519;
case SIGN_ED448:
return OID_ED448;
case SIGN_BLISS_WITH_SHA2_256:
return OID_BLISS_WITH_SHA2_256;
case SIGN_BLISS_WITH_SHA2_384:
@@ -236,15 +248,17 @@ static struct {
key_type_t type;
int max_keysize;
} scheme_map[] = {
{ SIGN_RSA_EMSA_PKCS1_SHA2_256, KEY_RSA, 3072 },
{ SIGN_RSA_EMSA_PKCS1_SHA2_384, KEY_RSA, 7680 },
{ SIGN_RSA_EMSA_PKCS1_SHA2_512, KEY_RSA, 0 },
{ SIGN_ECDSA_WITH_SHA256_DER, KEY_ECDSA, 256 },
{ SIGN_ECDSA_WITH_SHA384_DER, KEY_ECDSA, 384 },
{ SIGN_ECDSA_WITH_SHA512_DER, KEY_ECDSA, 0 },
{ SIGN_BLISS_WITH_SHA2_256, KEY_BLISS, 128 },
{ SIGN_BLISS_WITH_SHA2_384, KEY_BLISS, 192 },
{ SIGN_BLISS_WITH_SHA2_512, KEY_BLISS, 0 }
{ SIGN_RSA_EMSA_PKCS1_SHA2_256, KEY_RSA, 3072 },
{ SIGN_RSA_EMSA_PKCS1_SHA2_384, KEY_RSA, 7680 },
{ SIGN_RSA_EMSA_PKCS1_SHA2_512, KEY_RSA, 0 },
{ SIGN_ECDSA_WITH_SHA256_DER, KEY_ECDSA, 256 },
{ SIGN_ECDSA_WITH_SHA384_DER, KEY_ECDSA, 384 },
{ SIGN_ECDSA_WITH_SHA512_DER, KEY_ECDSA, 0 },
{ SIGN_ED25519, KEY_ED25519, 0 },
{ SIGN_ED448, KEY_ED448, 0 },
{ SIGN_BLISS_WITH_SHA2_256, KEY_BLISS, 128 },
{ SIGN_BLISS_WITH_SHA2_384, KEY_BLISS, 192 },
{ SIGN_BLISS_WITH_SHA2_512, KEY_BLISS, 0 }
};
/**
@@ -323,6 +337,10 @@ key_type_t key_type_from_signature_scheme(signature_scheme_t scheme)
case SIGN_ECDSA_384:
case SIGN_ECDSA_521:
return KEY_ECDSA;
case SIGN_ED25519:
return KEY_ED25519;
case SIGN_ED448:
return KEY_ED448;
case SIGN_BLISS_WITH_SHA2_256:
case SIGN_BLISS_WITH_SHA2_384:
case SIGN_BLISS_WITH_SHA2_512:
src/libstrongswan/credentials/keys/public_key.h
+13 -6
View File
@@ -37,16 +37,19 @@ typedef enum encryption_scheme_t encryption_scheme_t;
*/
enum key_type_t {
/** key type wildcard */
KEY_ANY = 0,
KEY_ANY = 0,
/** RSA crypto system as in PKCS#1 */
KEY_RSA = 1,
KEY_RSA = 1,
/** ECDSA as in ANSI X9.62 */
KEY_ECDSA = 2,
KEY_ECDSA = 2,
/** DSA */
KEY_DSA = 3,
KEY_DSA = 3,
/** Ed25519 PureEdDSA instance as in draft-irtf-cfrg-eddsa */
KEY_ED25519 = 4,
/** Ed448 PureEdDSA instance as in draft-irtf-cfrg-eddsa */
KEY_ED448 = 5,
/** BLISS */
KEY_BLISS = 4,
/** ElGamal, ... */
KEY_BLISS = 6,
};
/**
@@ -102,6 +105,10 @@ enum signature_scheme_t {
SIGN_ECDSA_384,
/** ECDSA on the P-521 curve with SHA-512 as in RFC 4754 */
SIGN_ECDSA_521,
/** PureEdDSA on Curve25519 as in draft-ietf-curdle-pkix */
SIGN_ED25519,
/** PureEdDSA on Curve448 as in draft-ietf-curdle-pkix */
SIGN_ED448,
/** BLISS with SHA-2_256 */
SIGN_BLISS_WITH_SHA2_256,
/** BLISS with SHA-2_384 */
src/libstrongswan/crypto/hashers/hasher.c
+28 -2
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@@ -20,7 +20,8 @@
#include <asn1/oid.h>
ENUM_BEGIN(hash_algorithm_names, HASH_SHA1, HASH_SHA512,
ENUM_BEGIN(hash_algorithm_names, HASH_IDENTITY, HASH_SHA512,
"HASH_IDENTITY",
"HASH_SHA1",
"HASH_SHA256",
"HASH_SHA384",
@@ -37,7 +38,8 @@ ENUM_NEXT(hash_algorithm_names, HASH_UNKNOWN, HASH_SHA3_512, HASH_SHA512,
"HASH_SHA3_512");
ENUM_END(hash_algorithm_names, HASH_SHA3_512);
ENUM_BEGIN(hash_algorithm_short_names, HASH_SHA1, HASH_SHA512,
ENUM_BEGIN(hash_algorithm_short_names, HASH_IDENTITY, HASH_SHA512,
"identity",
"sha1",
"sha256",
"sha384",
@@ -94,6 +96,9 @@ hash_algorithm_t hasher_algorithm_from_oid(int oid)
case OID_SHA3_512:
case OID_RSASSA_PKCS1V15_WITH_SHA3_512:
return HASH_SHA3_512;
case OID_ED25519:
case OID_ED448:
return HASH_IDENTITY;
default:
return HASH_UNKNOWN;
}
@@ -267,6 +272,7 @@ integrity_algorithm_t hasher_algorithm_to_integrity(hash_algorithm_t alg,
case HASH_SHA3_256:
case HASH_SHA3_384:
case HASH_SHA3_512:
case HASH_IDENTITY:
case HASH_UNKNOWN:
break;
}
@@ -280,6 +286,7 @@ bool hasher_algorithm_for_ikev2(hash_algorithm_t alg)
{
switch (alg)
{
case HASH_IDENTITY:
case HASH_SHA1:
case HASH_SHA256:
case HASH_SHA384:
@@ -396,6 +403,22 @@ int hasher_signature_algorithm_to_oid(hash_algorithm_t alg, key_type_t key)
default:
return OID_UNKNOWN;
}
case KEY_ED25519:
switch (alg)
{
case HASH_IDENTITY:
return OID_ED25519;
default:
return OID_UNKNOWN;
}
case KEY_ED448:
switch (alg)
{
case HASH_IDENTITY:
return OID_ED448;
default:
return OID_UNKNOWN;
}
case KEY_BLISS:
switch (alg)
{
@@ -430,6 +453,9 @@ hash_algorithm_t hasher_from_signature_scheme(signature_scheme_t scheme)
case SIGN_RSA_EMSA_PKCS1_NULL:
case SIGN_ECDSA_WITH_NULL:
break;
case SIGN_ED25519:
case SIGN_ED448:
return HASH_IDENTITY;
case SIGN_RSA_EMSA_PKCS1_MD5:
return HASH_MD5;
case SIGN_RSA_EMSA_PKCS1_SHA1:
src/libstrongswan/crypto/hashers/hasher.h
+3 -1
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@@ -1,8 +1,9 @@
/*
* Copyright (C) 2016 Andreas Steffen
* Copyright (C) 2012-2015 Tobias Brunner
* Copyright (C) 2005-2006 Martin Willi
* Copyright (C) 2005 Jan Hutter
* Hochschule fuer Technik Rapperswil
* HSR Hochschule fuer Technik Rapperswil
*
* This program is free software; you can redistribute it and/or modify it
* under the terms of the GNU General Public License as published by the
@@ -35,6 +36,7 @@ typedef struct hasher_t hasher_t;
* Hash algorithms as defined for IKEv2 by RFC 7427
*/
enum hash_algorithm_t {
HASH_IDENTITY = 0,
HASH_SHA1 = 1,
HASH_SHA256 = 2,
HASH_SHA384 = 3,
src/libstrongswan/plugins/curve25519/Makefile.am
+2
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@@ -14,6 +14,8 @@ libstrongswan_curve25519_la_SOURCES = \
curve25519_dh.h curve25519_dh.c \
curve25519_drv.h curve25519_drv.c \
curve25519_drv_portable.h curve25519_drv_portable.c \
curve25519_private_key.h curve25519_private_key.c \
curve25519_public_key.h curve25519_public_key.c \
curve25519_plugin.h curve25519_plugin.c
libstrongswan_curve25519_la_LDFLAGS = -module -avoid-version
src/libstrongswan/plugins/curve25519/curve25519_drv.h
+1 -1
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@@ -15,7 +15,7 @@
/**
* @defgroup curve25519_drv curve25519_drv
* @{ @ingroup curve25519
* @{ @ingroup curve25519_p
*/
#ifndef CURVE25519_DRV_H_
src/libstrongswan/plugins/curve25519/curve25519_drv_portable.h
+1 -1
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@@ -15,7 +15,7 @@
/**
* @defgroup curve25519_drv_portable curve25519_drv_portable
* @{ @ingroup curve25519
* @{ @ingroup curve25519_p
*/
#include "curve25519_drv.h"
src/libstrongswan/plugins/curve25519/curve25519_plugin.c
+21
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@@ -2,6 +2,9 @@
* Copyright (C) 2014 Martin Willi
* Copyright (C) 2014 revosec AG
*
* Copyright (C) 2016 Andreas Steffen
* HSR Hochschule fuer Technik Rapperswil
*
* This program is free software; you can redistribute it and/or modify it
* under the terms of the GNU General Public License as published by the
* Free Software Foundation; either version 2 of the License, or (at your
@@ -15,6 +18,8 @@
#include "curve25519_plugin.h"
#include "curve25519_dh.h"
#include "curve25519_private_key.h"
#include "curve25519_public_key.h"
#include <library.h>
@@ -41,9 +46,25 @@ METHOD(plugin_t, get_features, int,
private_curve25519_plugin_t *this, plugin_feature_t *features[])
{
static plugin_feature_t f[] = {
/* X25519 DH group */
PLUGIN_REGISTER(DH, curve25519_dh_create),
PLUGIN_PROVIDE(DH, CURVE_25519),
PLUGIN_DEPENDS(RNG, RNG_STRONG),
/* Ed25519 private/public keys */
PLUGIN_REGISTER(PRIVKEY, curve25519_private_key_load, TRUE),
PLUGIN_PROVIDE(PRIVKEY, KEY_ED25519),
PLUGIN_REGISTER(PRIVKEY_GEN, curve25519_private_key_gen, FALSE),
PLUGIN_PROVIDE(PRIVKEY_GEN, KEY_ED25519),
PLUGIN_DEPENDS(RNG, RNG_TRUE),
PLUGIN_DEPENDS(HASHER, HASH_SHA512),
PLUGIN_REGISTER(PUBKEY, curve25519_public_key_load, TRUE),
PLUGIN_PROVIDE(PUBKEY, KEY_ED25519),
/* Ed25519 signature scheme, private */
PLUGIN_PROVIDE(PRIVKEY_SIGN, SIGN_ED25519),
PLUGIN_DEPENDS(HASHER, HASH_SHA512),
/* Ed25519 signature verification scheme, public */
PLUGIN_PROVIDE(PUBKEY_VERIFY, SIGN_ED25519),
PLUGIN_DEPENDS(HASHER, HASH_SHA512),
};
*features = f;
return countof(f);
src/libstrongswan/plugins/curve25519/curve25519_private_key.c
+287
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@@ -0,0 +1,287 @@
/*
* Copyright (C) 2016 Andreas Steffen
* HSR Hochschule fuer Technik Rapperswil
*
* This program is free software; you can redistribute it and/or modify it
* under the terms of the GNU General Public License as published by the
* Free Software Foundation; either version 2 of the License, or (at your
* option) any later version. See <http://www.fsf.org/copyleft/gpl.txt>.
*
* This program 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 General Public License
* for more details.
*/
#include "curve25519_private_key.h"
#include "curve25519_public_key.h"
#include <asn1/asn1.h>
#include <asn1/oid.h>
#define _GNU_SOURCE
#include <stdlib.h>
typedef struct private_curve25519_private_key_t private_curve25519_private_key_t;
/**
* Private data of a curve25519_private_key_t object.
*/
struct private_curve25519_private_key_t {
/**
* Public interface for this signer.
*/
curve25519_private_key_t public;
/**
* Ed25519 private key
*/
chunk_t key;
/**
* Ed25519 public key
*/
chunk_t pubkey;
/**
* Reference count
*/
refcount_t ref;
};
METHOD(private_key_t, get_type, key_type_t,
private_curve25519_private_key_t *this)
{
return KEY_ED25519;
}
METHOD(private_key_t, sign, bool,
private_curve25519_private_key_t *this, signature_scheme_t scheme,
chunk_t data, chunk_t *signature)
{
if (scheme != SIGN_ED25519)
{
DBG1(DBG_LIB, "signature scheme %N not supported by Ed25519",
signature_scheme_names, scheme);
return FALSE;
}
return FALSE;
}
METHOD(private_key_t, decrypt, bool,
private_curve25519_private_key_t *this, encryption_scheme_t scheme,
chunk_t crypto, chunk_t *plain)
{
DBG1(DBG_LIB, "encryption scheme %N not supported", encryption_scheme_names,
scheme);
return FALSE;
}
METHOD(private_key_t, get_keysize, int,
private_curve25519_private_key_t *this)
{
return 8 * ED25519_KEY_LEN;
}
METHOD(private_key_t, get_public_key, public_key_t*,
private_curve25519_private_key_t *this)
{
public_key_t *public;
chunk_t pubkey;
pubkey = curve25519_public_key_info_encode(this->pubkey);
public = lib->creds->create(lib->creds, CRED_PUBLIC_KEY, KEY_ED25519,
BUILD_BLOB_ASN1_DER, pubkey, BUILD_END);
free(pubkey.ptr);
return public;
}
METHOD(private_key_t, get_encoding, bool,
private_curve25519_private_key_t *this, cred_encoding_type_t type,
chunk_t *encoding)
{
switch (type)
{
case PRIVKEY_ASN1_DER:
case PRIVKEY_PEM:
{
bool success = TRUE;
*encoding = asn1_wrap(ASN1_SEQUENCE, "cms",
ASN1_INTEGER_0,
asn1_algorithmIdentifier(OID_ED25519),
asn1_wrap(ASN1_OCTET_STRING, "s",
asn1_simple_object(ASN1_OCTET_STRING, this->key)
)
);
if (type == PRIVKEY_PEM)
{
chunk_t asn1_encoding = *encoding;
success = lib->encoding->encode(lib->encoding, PRIVKEY_PEM,
NULL, encoding, CRED_PART_EDDSA_PRIV_ASN1_DER,
asn1_encoding, CRED_PART_END);
chunk_clear(&asn1_encoding);
}
return success;
}
default:
return FALSE;
}
}
METHOD(private_key_t, get_fingerprint, bool,
private_curve25519_private_key_t *this, cred_encoding_type_t type,
chunk_t *fp)
{
bool success;
if (lib->encoding->get_cache(lib->encoding, type, this, fp))
{
return TRUE;
}
success = curve25519_public_key_fingerprint(this->pubkey, type, fp);
if (success)
{
lib->encoding->cache(lib->encoding, type, this, *fp);
}
return success;
}
METHOD(private_key_t, get_ref, private_key_t*,
private_curve25519_private_key_t *this)
{
ref_get(&this->ref);
return &this->public.key;
}
METHOD(private_key_t, destroy, void,
private_curve25519_private_key_t *this)
{
if (ref_put(&this->ref))
{
lib->encoding->clear_cache(lib->encoding, this);
chunk_clear(&this->key);
chunk_free(&this->pubkey);
free(this);
}
}
/**
* Internal generic constructor
*/
static private_curve25519_private_key_t *curve25519_private_key_create(chunk_t key)
{
private_curve25519_private_key_t *this;
uint8_t buf[HASH_SIZE_SHA512];
hasher_t *hasher;
/* derive public key */
hasher = lib->crypto->create_hasher(lib->crypto, HASH_SHA512);
if (!hasher || !hasher->get_hash(hasher, key, buf))
{
return NULL;
}
buf[ 0] &= 0xf8;
buf[31] &= 0x7f;
buf[31] |= 0x40;
INIT(this,
.public = {
.key = {
.get_type = _get_type,
.sign = _sign,
.decrypt = _decrypt,
.get_keysize = _get_keysize,
.get_public_key = _get_public_key,
.equals = private_key_equals,
.belongs_to = private_key_belongs_to,
.get_fingerprint = _get_fingerprint,
.has_fingerprint = private_key_has_fingerprint,
.get_encoding = _get_encoding,
.get_ref = _get_ref,
.destroy = _destroy,
},
},
.key = key,
.pubkey = chunk_clone(chunk_create(buf, ED25519_KEY_LEN)),
.ref = 1,
);
return this;
}
/**
* See header.
*/
curve25519_private_key_t *curve25519_private_key_gen(key_type_t type,
va_list args)
{
private_curve25519_private_key_t *this;
chunk_t key;
rng_t *rng;
while (TRUE)
{
switch (va_arg(args, builder_part_t))
{
case BUILD_KEY_SIZE:
/* key_size argument is not needed */
va_arg(args, u_int);
continue;
case BUILD_END:
break;
default:
return NULL;
}
break;
}
/* generate 256 bit true random private key */
rng = lib->crypto->create_rng(lib->crypto, RNG_TRUE);
if (!rng || !rng->allocate_bytes(rng, ED25519_KEY_LEN, &key))
{
DESTROY_IF(rng);
return NULL;
}
rng->destroy(rng);
this = curve25519_private_key_create(key);
return this ? &this->public : NULL;
}
/**
* See header.
*/
curve25519_private_key_t *curve25519_private_key_load(key_type_t type,
va_list args)
{
private_curve25519_private_key_t *this;
chunk_t key = chunk_empty;
while (TRUE)
{
switch (va_arg(args, builder_part_t))
{
case BUILD_EDDSA_PRIV_ASN1_DER:
key = va_arg(args, chunk_t);
continue;
case BUILD_END:
break;
default:
return NULL;
}
break;
}
if (!asn1_parse_simple_object(&key, ASN1_OCTET_STRING, 0, "EdPrivateKey") ||
key.len != ED25519_KEY_LEN)
{
return NULL;
}
this = curve25519_private_key_create(chunk_clone(key));
return this ? &this->public : NULL;
}
src/libstrongswan/plugins/curve25519/curve25519_private_key.h
+60
View File
@@ -0,0 +1,60 @@
/*
* Copyright (C) 2016 Andreas Steffen
* HSR Hochschule fuer Technik Rapperswil
*
* This program is free software; you can redistribute it and/or modify it
* under the terms of the GNU General Public License as published by the
* Free Software Foundation; either version 2 of the License, or (at your
* option) any later version. See <http://www.fsf.org/copyleft/gpl.txt>.
*
* This program 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 General Public License
* for more details.
*/
/**
* @defgroup curve25519_private_key curve25519_private_key
* @{ @ingroup curve25519_p
*/
#ifndef CURVE25519_PRIVATE_KEY_H_
#define CURVE25519_PRIVATE_KEY_H_
#include <credentials/builder.h>
#include <credentials/keys/private_key.h>
typedef struct curve25519_private_key_t curve25519_private_key_t;
/**
* Private_key_t implementation of Ed25519 signature algorithm.
*/
struct curve25519_private_key_t {
/**
* Implements private_key_t interface
*/
private_key_t key;
};
/**
* Generate an Ed25519 private key.
*
* @param type type of the key, must be KEY_ED25519
* @param args builder_part_t argument list
* @return generated key, NULL on failure
*/
curve25519_private_key_t *curve25519_private_key_gen(key_type_t type,
va_list args);
/**
* Load an Ed25519 private key.
*
* @param type type of the key, must be KEY_ED25519
* @param args builder_part_t argument list
* @return loaded key, NULL on failure
*/
curve25519_private_key_t *curve25519_private_key_load(key_type_t type,
va_list args);
#endif /** CURVE25519_PRIVATE_KEY_H_ @}*/
src/libstrongswan/plugins/curve25519/curve25519_public_key.c
+280
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@@ -0,0 +1,280 @@
/*
* Copyright (C) 2016 Andreas Steffen
* HSR Hochschule fuer Technik Rapperswil
*
* This program is free software; you can redistribute it and/or modify it
* under the terms of the GNU General Public License as published by the
* Free Software Foundation; either version 2 of the License, or (at your
* option) any later version. See <http://www.fsf.org/copyleft/gpl.txt>.
*
* This program 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 General Public License
* for more details.
*/
#include "curve25519_public_key.h"
#include <asn1/asn1.h>
#include <asn1/asn1_parser.h>
#include <asn1/oid.h>
typedef struct private_curve25519_public_key_t private_curve25519_public_key_t;
/**
* Private data structure with signing context.
*/
struct private_curve25519_public_key_t {
/**
* Public interface for this signer.
*/
curve25519_public_key_t public;
/**
* Ed25519 public key
*/
chunk_t pubkey;
/**
* Reference counter
*/
refcount_t ref;
};
METHOD(public_key_t, get_type, key_type_t,
private_curve25519_public_key_t *this)
{
return KEY_ED25519;
}
METHOD(public_key_t, verify, bool,
private_curve25519_public_key_t *this, signature_scheme_t scheme,
chunk_t data, chunk_t signature)
{
if (scheme != SIGN_ED25519)
{
DBG1(DBG_LIB, "signature scheme %N not supported by Ed25519",
signature_scheme_names, scheme);
return FALSE;
}
/* TODO Implement signature verification */
return FALSE;
}
METHOD(public_key_t, encrypt_, bool,
private_curve25519_public_key_t *this, encryption_scheme_t scheme,
chunk_t plain, chunk_t *crypto)
{
DBG1(DBG_LIB, "encryption scheme %N not supported", encryption_scheme_names,
scheme);
return FALSE;
}
METHOD(public_key_t, get_keysize, int,
private_curve25519_public_key_t *this)
{
return 8 * ED25519_KEY_LEN;
}
METHOD(public_key_t, get_encoding, bool,
private_curve25519_public_key_t *this, cred_encoding_type_t type,
chunk_t *encoding)
{
bool success = TRUE;
*encoding = curve25519_public_key_info_encode(this->pubkey);
if (type != PUBKEY_SPKI_ASN1_DER)
{
chunk_t asn1_encoding = *encoding;
success = lib->encoding->encode(lib->encoding, type,
NULL, encoding, CRED_PART_EDDSA_PUB_ASN1_DER,
asn1_encoding, CRED_PART_END);
chunk_clear(&asn1_encoding);
}
return success;
}
METHOD(public_key_t, get_fingerprint, bool,
private_curve25519_public_key_t *this, cred_encoding_type_t type,
chunk_t *fp)
{
bool success;
if (lib->encoding->get_cache(lib->encoding, type, this, fp))
{
return TRUE;
}
success = curve25519_public_key_fingerprint(this->pubkey, type, fp);
if (success)
{
lib->encoding->cache(lib->encoding, type, this, *fp);
}
return success;
}
METHOD(public_key_t, get_ref, public_key_t*,
private_curve25519_public_key_t *this)
{
ref_get(&this->ref);
return &this->public.key;
}
METHOD(public_key_t, destroy, void,
private_curve25519_public_key_t *this)
{
if (ref_put(&this->ref))
{
lib->encoding->clear_cache(lib->encoding, this);
free(this->pubkey.ptr);
free(this);
}
}
/**
* ASN.1 definition of an Ed25519 public key
*/
static const asn1Object_t pubkeyObjects[] = {
{ 0, "subjectPublicKeyInfo",ASN1_SEQUENCE, ASN1_NONE }, /* 0 */
{ 1, "algorithm", ASN1_EOC, ASN1_RAW }, /* 1 */
{ 1, "subjectPublicKey", ASN1_BIT_STRING, ASN1_BODY }, /* 2 */
{ 0, "exit", ASN1_EOC, ASN1_EXIT }
};
#define ED25519_SUBJECT_PUBLIC_KEY_ALGORITHM 1
#define ED25519_SUBJECT_PUBLIC_KEY 2
/**
* See header.
*/
curve25519_public_key_t *curve25519_public_key_load(key_type_t type,
va_list args)
{
private_curve25519_public_key_t *this;
chunk_t blob = chunk_empty, object;
asn1_parser_t *parser;
bool success = FALSE;
int objectID, oid;
while (TRUE)
{
switch (va_arg(args, builder_part_t))
{
case BUILD_BLOB_ASN1_DER:
blob = va_arg(args, chunk_t);
continue;
case BUILD_END:
break;
default:
return NULL;
}
break;
}
INIT(this,
.public = {
.key = {
.get_type = _get_type,
.verify = _verify,
.encrypt = _encrypt_,
.equals = public_key_equals,
.get_keysize = _get_keysize,
.get_fingerprint = _get_fingerprint,
.has_fingerprint = public_key_has_fingerprint,
.get_encoding = _get_encoding,
.get_ref = _get_ref,
.destroy = _destroy,
},
},
.ref = 1,
);
parser = asn1_parser_create(pubkeyObjects, blob);
while (parser->iterate(parser, &objectID, &object))
{
switch (objectID)
{
case ED25519_SUBJECT_PUBLIC_KEY_ALGORITHM:
{
oid = asn1_parse_algorithmIdentifier(object,
parser->get_level(parser) + 1, NULL);
if (oid != OID_ED25519)
{
goto end;
}
break;
}
case ED25519_SUBJECT_PUBLIC_KEY:
{
/* encoded as an ASN1 BIT STRING */
if (object.len != 1 + ED25519_KEY_LEN)
{
goto end;
}
this->pubkey = chunk_clone(chunk_skip(object, 1));
break;
}
}
}
success = parser->success(parser);
end:
parser->destroy(parser);
if (!success)
{
destroy(this);
return NULL;
}
return &this->public;
}
/**
* See header.
*/
chunk_t curve25519_public_key_info_encode(chunk_t pubkey)
{
return asn1_wrap(ASN1_SEQUENCE, "mm",
asn1_wrap(ASN1_SEQUENCE, "m",
asn1_build_known_oid(OID_ED25519)),
asn1_bitstring("c", pubkey));
}
/**
* See header.
*/
bool curve25519_public_key_fingerprint(chunk_t pubkey,
cred_encoding_type_t type, chunk_t *fp)
{
hasher_t *hasher;
chunk_t key;
switch (type)
{
case KEYID_PUBKEY_SHA1:
key = chunk_clone(pubkey);
break;
case KEYID_PUBKEY_INFO_SHA1:
key = curve25519_public_key_info_encode(pubkey);
break;
default:
return FALSE;
}
hasher = lib->crypto->create_hasher(lib->crypto, HASH_SHA1);
if (!hasher || !hasher->allocate_hash(hasher, key, fp))
{
DBG1(DBG_LIB, "SHA1 hash algorithm not supported, "
"fingerprinting failed");
DESTROY_IF(hasher);
free(key.ptr);
return FALSE;
}
hasher->destroy(hasher);
free(key.ptr);
return TRUE;
}
src/libstrongswan/plugins/curve25519/curve25519_public_key.h
+74
View File
@@ -0,0 +1,74 @@
/*
* Copyright (C) 2016 Andreas Steffen
* HSR Hochschule fuer Technik Rapperswil
*
* This program is free software; you can redistribute it and/or modify it
* under the terms of the GNU General Public License as published by the
* Free Software Foundation; either version 2 of the License, or (at your
* option) any later version. See <http://www.fsf.org/copyleft/gpl.txt>.
*
* This program 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 General Public License
* for more details.
*/
/**
* @defgroup curve25519_public_key curve25519_public_key
* @{ @ingroup curve25519_p
*/
#ifndef CURVE25519_PUBLIC_KEY_H_
#define CURVE25519_PUBLIC_KEY_H_
#include <credentials/builder.h>
#include <credentials/cred_encoding.h>
#include <credentials/keys/public_key.h>
typedef struct curve25519_public_key_t curve25519_public_key_t;
#define ED25519_KEY_LEN 32
/**
* public_key_t implementation of Ed25519 signature algorithm
*/
struct curve25519_public_key_t {
/**
* Implements the public_key_t interface
*/
public_key_t key;
};
/**
* Load an Ed25519 public key.
*
* @param type type of the key, must be KEY_ED25519
* @param args builder_part_t argument list
* @return loaded key, NULL on failure
*/
curve25519_public_key_t *curve25519_public_key_load(key_type_t type,
va_list args);
/* The following functions are shared with the curve25519_private_key class */
/**
* Encode a Ed25519 subjectPublicKeyInfo record in ASN.1 DER format
*
* @param pubkey Ed25519 public key
* @result ASN.1 encoded subjectPublicKeyInfo record
*/
chunk_t curve25519_public_key_info_encode(chunk_t pubkey);
/**
* Generate a Ed25519 public key fingerprint
*
* @param pubkey Ed25519 public key
* @param type type of fingerprint to be generated
* @param fp generated fingerprint (must be freed by caller)
* @result TRUE if generation was successful
*/
bool curve25519_public_key_fingerprint(chunk_t pubkey,
cred_encoding_type_t type, chunk_t *fp);
#endif /** CURVE25519_PUBLIC_KEY_H_ @}*/
src/libstrongswan/plugins/pem/pem_encoder.c
+13 -8
View File
@@ -1,6 +1,6 @@
/*
* Copyright (C) 2010 Andreas Steffen
* Hochschule fuer Technik Rapperswil
* Copyright (C) 2010-2016 Andreas Steffen
* HSR Hochschule fuer Technik Rapperswil
*
* This program is free software; you can redistribute it and/or modify it
* under the terms of the GNU General Public License as published by the
@@ -37,7 +37,11 @@ bool pem_encoder_encode(cred_encoding_type_t type, chunk_t *encoding,
if (cred_encoding_args(args, CRED_PART_RSA_PUB_ASN1_DER,
&asn1, CRED_PART_END) ||
cred_encoding_args(args, CRED_PART_ECDSA_PUB_ASN1_DER,
&asn1, CRED_PART_END))
&asn1, CRED_PART_END) ||
cred_encoding_args(args, CRED_PART_EDDSA_PUB_ASN1_DER,
&asn1, CRED_PART_END) ||
cred_encoding_args(args, CRED_PART_BLISS_PUB_ASN1_DER,
&asn1, CRED_PART_END))
{
break;
}
@@ -53,11 +57,6 @@ bool pem_encoder_encode(cred_encoding_type_t type, chunk_t *encoding,
break;
}
}
if (cred_encoding_args(args, CRED_PART_BLISS_PUB_ASN1_DER,
&asn1, CRED_PART_END))
{
break;
}
return FALSE;
case PRIVKEY_PEM:
label ="RSA PRIVATE KEY";
@@ -97,6 +96,12 @@ bool pem_encoder_encode(cred_encoding_type_t type, chunk_t *encoding,
label ="BLISS PRIVATE KEY";
break;
}
if (cred_encoding_args(args, CRED_PART_EDDSA_PRIV_ASN1_DER,
&asn1, CRED_PART_END))
{
label ="PRIVATE KEY";
break;
}
return FALSE;
case CERT_PEM:
if (cred_encoding_args(args, CRED_PART_X509_ASN1_DER,
src/libstrongswan/plugins/pem/pem_plugin.c
+7
View File
@@ -63,6 +63,9 @@ METHOD(plugin_t, get_features, int,
PLUGIN_REGISTER(PRIVKEY, pem_private_key_load, FALSE),
PLUGIN_PROVIDE(PRIVKEY, KEY_BLISS),
PLUGIN_DEPENDS(PRIVKEY, KEY_BLISS),
PLUGIN_REGISTER(PRIVKEY, pem_private_key_load, FALSE),
PLUGIN_PROVIDE(PRIVKEY, KEY_ED25519),
PLUGIN_DEPENDS(PRIVKEY, KEY_ED25519),
/* public key PEM decoding */
PLUGIN_REGISTER(PUBKEY, pem_public_key_load, FALSE),
@@ -79,6 +82,10 @@ METHOD(plugin_t, get_features, int,
PLUGIN_DEPENDS(PUBKEY, KEY_DSA),
PLUGIN_REGISTER(PUBKEY, pem_public_key_load, FALSE),
PLUGIN_PROVIDE(PUBKEY, KEY_BLISS),
PLUGIN_DEPENDS(PUBKEY, KEY_BLISS),
PLUGIN_REGISTER(PUBKEY, pem_public_key_load, FALSE),
PLUGIN_PROVIDE(PUBKEY, KEY_ED25519),
PLUGIN_DEPENDS(PUBKEY, KEY_ED25519),
/* certificate PEM decoding */
PLUGIN_REGISTER(CERT_DECODE, pem_certificate_load, FALSE),
src/libstrongswan/plugins/pkcs1/pkcs1_builder.c
+7
View File
@@ -75,6 +75,13 @@ static public_key_t *parse_public_key(chunk_t blob)
KEY_BLISS, BUILD_BLOB_ASN1_DER, blob, BUILD_END);
goto end;
}
else if (oid == OID_ED25519)
{
/* Need the whole subjectPublicKeyInfo for Ed25519 public keys */
key = lib->creds->create(lib->creds, CRED_PUBLIC_KEY,
KEY_ED25519, BUILD_BLOB_ASN1_DER, blob, BUILD_END);
goto end;
}
else
{
/* key type not supported */
src/libstrongswan/plugins/pkcs1/pkcs1_plugin.c
+3
View File
@@ -52,6 +52,9 @@ METHOD(plugin_t, get_features, int,
PLUGIN_PROVIDE(PUBKEY, KEY_ANY),
PLUGIN_SDEPEND(PUBKEY, KEY_RSA),
PLUGIN_SDEPEND(PUBKEY, KEY_ECDSA),
PLUGIN_SDEPEND(PUBKEY, KEY_ED25519),
PLUGIN_SDEPEND(PUBKEY, KEY_ED448),
PLUGIN_SDEPEND(PUBKEY, KEY_BLISS),
PLUGIN_SDEPEND(PUBKEY, KEY_DSA),
PLUGIN_REGISTER(PUBKEY, pkcs1_public_key_load, FALSE),
PLUGIN_PROVIDE(PUBKEY, KEY_RSA),
src/libstrongswan/plugins/pkcs8/pkcs8_builder.c
+11 -4
View File
@@ -47,6 +47,7 @@ static private_key_t *parse_private_key(chunk_t blob)
int objectID;
private_key_t *key = NULL;
key_type_t type = KEY_ANY;
builder_part_t part = BUILD_BLOB_ASN1_DER;
parser = asn1_parser_create(pkinfoObjects, blob);
parser->set_flags(parser, FALSE, TRUE);
@@ -68,6 +69,14 @@ static private_key_t *parse_private_key(chunk_t blob)
case OID_EC_PUBLICKEY:
type = KEY_ECDSA;
break;
case OID_ED25519:
type = KEY_ED25519;
part = BUILD_EDDSA_PRIV_ASN1_DER;
break;
case OID_ED448:
type = KEY_ED448;
part = BUILD_EDDSA_PRIV_ASN1_DER;
break;
default:
/* key type not supported */
goto end;
@@ -81,14 +90,12 @@ static private_key_t *parse_private_key(chunk_t blob)
{
key = lib->creds->create(lib->creds, CRED_PRIVATE_KEY,
type, BUILD_BLOB_ALGID_PARAMS,
params, BUILD_BLOB_ASN1_DER,
object, BUILD_END);
params, part, object, BUILD_END);
}
else
{
key = lib->creds->create(lib->creds, CRED_PRIVATE_KEY,
type, BUILD_BLOB_ASN1_DER, object,
BUILD_END);
type, part, object, BUILD_END);
}
DBG2(DBG_ASN, "-- < --");
break;
src/libstrongswan/plugins/pkcs8/pkcs8_plugin.c
+2
View File
@@ -46,6 +46,8 @@ METHOD(plugin_t, get_features, int,
PLUGIN_PROVIDE(PRIVKEY, KEY_ANY),
PLUGIN_PROVIDE(PRIVKEY, KEY_RSA),
PLUGIN_PROVIDE(PRIVKEY, KEY_ECDSA),
PLUGIN_PROVIDE(PRIVKEY, KEY_ED25519),
PLUGIN_PROVIDE(PRIVKEY, KEY_ED448),
};
*features = f;
return countof(f);