oscore_cose.c File Reference

An implementation of the CBOR Object Signing and Encryption (RFC). More...

#include "coap3/coap_libcoap_build.h"
#include "stdio.h"

Include dependency graph for oscore_cose.c:

Go to the source code of this file.

Data Structures
struct	cose_curve_desc
struct	cose_alg_desc
struct	cose_hkdf_alg_desc
struct	hkdf_hmac_algs

Functions
const char *	cose_get_curve_name (cose_curve_t id, char *buffer, size_t buflen)
cose_curve_t	cose_get_curve_id (const char *name)
const char *	cose_get_alg_name (cose_alg_t id, char *buffer, size_t buflen)
cose_alg_t	cose_get_alg_id (const char *name)
const char *	cose_get_hkdf_alg_name (cose_hkdf_alg_t id, char *buffer, size_t buflen)
int	cose_get_hmac_alg_for_hkdf (cose_hkdf_alg_t hkdf_alg, cose_hmac_alg_t *hmac_alg)
size_t	cose_tag_len (cose_alg_t cose_alg)
size_t	cose_hash_len (cose_alg_t cose_alg)
size_t	cose_nonce_len (cose_alg_t cose_alg)
size_t	cose_key_len (cose_alg_t cose_alg)
size_t	cose_encrypt0_encode (cose_encrypt0_t *ptr, uint8_t *buffer, size_t buf_len)
int	cose_encrypt0_decode (cose_encrypt0_t *ptr, uint8_t *buffer, size_t size)
void	cose_encrypt0_init (cose_encrypt0_t *ptr)
void	cose_encrypt0_set_alg (cose_encrypt0_t *ptr, uint8_t alg)
void	cose_encrypt0_set_ciphertext (cose_encrypt0_t *ptr, uint8_t *buffer, size_t size)
void	cose_encrypt0_set_plaintext (cose_encrypt0_t *ptr, uint8_t *buffer, size_t size)
int	cose_encrypt0_get_plaintext (cose_encrypt0_t *ptr, uint8_t **buffer)
void	cose_encrypt0_set_partial_iv (cose_encrypt0_t *ptr, coap_bin_const_t *partial_iv)
coap_bin_const_t	cose_encrypt0_get_partial_iv (cose_encrypt0_t *ptr)
void	cose_encrypt0_set_key_id (cose_encrypt0_t *ptr, coap_bin_const_t *key_id)
size_t	cose_encrypt0_get_key_id (cose_encrypt0_t *ptr, const uint8_t **buffer)
size_t	cose_encrypt0_get_kid_context (cose_encrypt0_t *ptr, const uint8_t **buffer)
void	cose_encrypt0_set_kid_context (cose_encrypt0_t *ptr, coap_bin_const_t *kid_context)
void	cose_encrypt0_set_external_aad (cose_encrypt0_t *ptr, coap_bin_const_t *external_aad)
void	cose_encrypt0_set_aad (cose_encrypt0_t *ptr, coap_bin_const_t *aad)
int	cose_encrypt0_set_key (cose_encrypt0_t *ptr, coap_bin_const_t *key)
void	cose_encrypt0_set_nonce (cose_encrypt0_t *ptr, coap_bin_const_t *nonce)
int	cose_encrypt0_encrypt (cose_encrypt0_t *ptr, uint8_t *ciphertext_buffer, size_t ciphertext_len)
int	cose_encrypt0_decrypt (cose_encrypt0_t *ptr, uint8_t *plaintext_buffer, size_t plaintext_len)

Variables
static struct cose_curve_desc	curve_mapping []
static struct cose_alg_desc	alg_mapping []
static struct cose_hkdf_alg_desc	hkdf_alg_mapping []
static struct hkdf_hmac_algs	hkdf_hmacs []

Detailed Description

An implementation of the CBOR Object Signing and Encryption (RFC).

Author

Martin Gunnarsson marti.nosp@m.n.gu.nosp@m.nnars.nosp@m.son@.nosp@m.ri.se added sign1 addition for coaplib Peter van der Stok <consu.nosp@m.ltan.nosp@m.cy@va.nosp@m.nder.nosp@m.stok..nosp@m.org > adapted for libcoap integration Jon Shallow supjp.nosp@m.s-li.nosp@m.bcoap.nosp@m.@jps.nosp@m.hallo.nosp@m.w.co.nosp@m.m

Definition in file oscore_cose.c.

Function Documentation

cose_encrypt0_decode()

int cose_encrypt0_decode	(	cose_encrypt0_t *	ptr,
		uint8_t *	buffer,
		size_t	size )

cose_encrypt0_get_plaintext()

int cose_encrypt0_get_plaintext	(	cose_encrypt0_t *	ptr,
		uint8_t **	buffer )

Variable Documentation

alg_mapping

struct cose_alg_desc alg_mapping[]

static

Initial value:

                           = {
  { "ES256K", COSE_ALGORITHM_ES256K },
  { "SHA-512", COSE_ALGORITHM_SHA_512 },
  { "SHA-384", COSE_ALGORITHM_SHA_384 },
  { "ES512", COSE_ALGORITHM_ES512 },
  { "ES384", COSE_ALGORITHM_ES384 },
  { "ECDH-SS + HKDF-256", COSE_ALGORITHM_ECDH_SS_HKDF_256 },
  { "SHA-512/256", COSE_ALGORITHM_SHA_512_256 },
  { "SHA-256", COSE_ALGORITHM_SHA_256_256 },
  { "SHA-256/64", COSE_ALGORITHM_SHA_256_64 },
  { "SHA-1", COSE_ALGORITHM_SHA_1 },
  { "direct+HKDF-SHA-512", COSE_ALGORITHM_HKDF_SHA_512 },
  { "direct+HKDF-SHA-256", COSE_ALGORITHM_HKDF_SHA_256 },
  { "EdDSA", COSE_ALGORITHM_EDDSA },
  { "ES256", COSE_ALGORITHM_ES256 },
  { "HMAC 256/64", COSE_ALGORITHM_HMAC256_64 },
  { "HMAC 256/256", COSE_ALGORITHM_HMAC256_256 },
  { "HMAC 384/384", COSE_ALGORITHM_HMAC384_384 },
  { "HMAC 512/512", COSE_ALGORITHM_HMAC512_512 },
  { "AES-CCM-16-64-128", COSE_ALGORITHM_AES_CCM_16_64_128 },
  { "AES-CCM-16-64-256", COSE_ALGORITHM_AES_CCM_16_64_256 },
  { "AES-CCM-64-64-128", COSE_ALGORITHM_AES_CCM_64_64_128 },
  { "AES-CCM-64-64-256", COSE_ALGORITHM_AES_CCM_64_64_256 },
  { "ChaCha20/Poly1305", COSE_ALGORITHM_CHACHA20_P1035 },
  { "AES-CCM-16-128-128", COSE_ALGORITHM_AES_CCM_16_128_128 },
  { "AES-CCM-16-128-256", COSE_ALGORITHM_AES_CCM_16_128_256 },
  { "AES-CCM-64-128-128", COSE_ALGORITHM_AES_CCM_64_128_128 },
  { "AES-CCM-64-128-256", COSE_ALGORITHM_AES_CCM_64_128_256 },
}

Definition at line 89 of file oscore_cose.c.

curve_mapping

struct cose_curve_desc curve_mapping[]

static

Initial value:

                             = {
  { "P-256", COSE_CURVE_P_256 },
  { "X25519", COSE_CURVE_X25519 },
  { "X448", COSE_CURVE_X448 },
  { "Ed25519", COSE_CURVE_ED25519 },
  { "Ed448", COSE_CURVE_ED448 },
  { "secp256k1", COSE_CURVE_SECP256K1 },
}

Definition at line 54 of file oscore_cose.c.

hkdf_alg_mapping

struct cose_hkdf_alg_desc hkdf_alg_mapping[]

static

Initial value:

                                = {
  { "direct+HKDF-SHA-512", COSE_HKDF_ALG_HKDF_SHA_512 },
  { "direct+HKDF-SHA-256", COSE_HKDF_ALG_HKDF_SHA_256 },
}

Definition at line 145 of file oscore_cose.c.

hkdf_hmacs

struct hkdf_hmac_algs hkdf_hmacs[]

static

Initial value:

= {
  {COSE_HKDF_ALG_HKDF_SHA_256, COSE_HMAC_ALG_HMAC256_256},
  {COSE_HKDF_ALG_HKDF_SHA_512, COSE_HMAC_ALG_HMAC512_512},
}