RIOT-OS/RIOT
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pkg/libcose: add RIOT as crypto backend

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This commit is contained in:
Francisco Molina 2022-02-24 13:19:42 +01:00
parent 8b6ddca6e9
commit c7b9657ff5
5 changed files with 79 additions and 2 deletions
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5
pkg/libcose/Kconfig
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@ -31,6 +31,11 @@ config MODULE_LIBCOSE_CRYPT_MONOCYPHER
depends on TEST_KCONFIG
depends on PACKAGE_MONOCYPHER
config MODULE_LIBCOSE_CRYPT_RIOT
bool "COSE use RIOT backend"
depends on TEST_KCONFIG
select MODULE_CRYPTO
config MODULE_LIBCOSE_CRYPT_INIT
bool "LibCose Crypt Initialization functions"
default y

5
pkg/libcose/Makefile.dep
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@ -16,6 +16,9 @@ endif
ifneq (,$(filter libcose_crypt_monocypher,$(USEMODULE)))
USEPKG += monocypher
endif
ifneq (,$(filter libcose_crypt_riot,$(USEMODULE)))
USEMODULE += crypto
endif
DEFAULT_MODULE += auto_init_libcose_crypt
DEFAULT_MODULE += libcose_crypt_init
DEFAULT_MODULE += auto_init_libcose_crypt

9
pkg/libcose/Makefile.include
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@ -1,4 +1,7 @@
INCLUDES += -I$(PKGDIRBASE)/libcose/include
INCLUDES += -I$(PKGDIRBASE)/libcose/include \
-I$(RIOTBASE)/pkg/libcose/include \
#
CFLAGS += -DUSE_CBOR_CONTEXT
ifneq (,$(filter libcose_crypt_hacl,$(USEMODULE)))
@ -13,6 +16,10 @@ endif
ifneq (,$(filter libcose_crypt_monocypher,$(USEMODULE)))
CFLAGS += -DCRYPTO_MONOCYPHER
endif
ifneq (,$(filter libcose_crypt_riot,$(USEMODULE)))
CFLAGS += -DCRYPTO_RIOT
DIRS += $(RIOTBASE)/pkg/libcose/contrib
endif
ifneq (,$(filter libcose_crypt_init,$(USEMODULE)))
DIRS += $(RIOTBASE)/pkg/libcose/init
endif

54
pkg/libcose/contrib/libcose_riot_crypto.c Normal file
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@ -0,0 +1,54 @@
/*
* Copyright (C) 2022 Inria
*
* This file is subject to the terms and conditions of the GNU Lesser
* General Public License v2.1. See the file LICENSE in the top level
* directory for more details.
*/
/**
* @ingroup pkg_libcose
* @{
*
* @file
* @brief RIOT as a crypto backend for libcose implementation
*
* @author Francisco Molina <francois-xavier.molina@inria.fr>
*
* @}
*/
#include <stdint.h>
#include <stdlib.h>
#include "crypto/chacha20poly1305.h"
#include "cose.h"
#include "cose/crypto.h"
#include "cose/crypto/selectors.h"
int cose_crypto_aead_encrypt_chachapoly(uint8_t *c, size_t *clen,
const uint8_t *msg, size_t msglen,
const uint8_t *aad, size_t aadlen,
const uint8_t *npub, const uint8_t *k)
{
if (*clen < msglen + CHACHA20POLY1305_TAG_BYTES) {
return COSE_ERR_INVALID_PARAM;
}
chacha20poly1305_encrypt(c, msg, msglen, aad, aadlen, k, npub);
*clen = msglen + CHACHA20POLY1305_TAG_BYTES;
return COSE_OK;
}
int cose_crypto_aead_decrypt_chachapoly(uint8_t *msg, size_t *msglen,
const uint8_t *c, size_t clen,
const uint8_t *aad, size_t aadlen,
const uint8_t *npub, const uint8_t *k)
{
if (chacha20poly1305_decrypt(c, clen, msg, msglen, aad, aadlen, k, npub) == 1) {
return COSE_OK;
}
else {
return COSE_ERR_CRYPTO;
}
}

8
pkg/libcose/include/cose/crypto/riot.h
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@ -31,6 +31,14 @@ extern "C" {
#define AUTO_INIT_PRIO_MOD_LIBCOSE 1050
#endif
/**
* @name list of provided algorithms
*
* @{
*/
#define HAVE_ALGO_CHACHA20POLY1305
/** @} */
/**
* @brief Initialize libCOSE RIOT crypto backend
*