oscore_crypto.h File Reference

An implementation of the Hash Based Key Derivation Function (RFC) and wrappers for AES-CCM*. More...

#include <coap3/coap_internal.h>

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Macros
#define	HKDF_INFO_MAXLEN   25
#define	HKDF_OUTPUT_MAXLEN   25
#define	AES_CCM_TAG   8
#define	AEAD_PLAINTEXT_MAXLEN   COAP_MAX_CHUNK_SIZE
#define	AEAD_TAG_MAXLEN   COAP_MAX_CHUNK_SIZE

Functions
int	oscore_hmac_hash (cose_hmac_alg_t hmac_alg, coap_bin_const_t *key, coap_bin_const_t *data, coap_bin_const_t **hmac)
	Derive the hmac hash using HMAC-HASH() function.
int	oscore_hkdf_extract (cose_hkdf_alg_t hkdf_alg, coap_bin_const_t *salt, coap_bin_const_t *ikm, coap_bin_const_t **hkdf_extract)
	Derive the pseudorandom key using HKDF-Extract() function.
int	oscore_hkdf_expand (cose_hkdf_alg_t hkdf_alg, coap_bin_const_t *prk, uint8_t *info, size_t info_len, uint8_t *okm, size_t okm_len)
	Derive the key using HKDF-Expand() function.
int	oscore_hkdf (cose_hkdf_alg_t hkdf_alg, coap_bin_const_t *salt, coap_bin_const_t *ikm, uint8_t *info, size_t info_len, uint8_t *okm, size_t okm_len)
	Derive the key using HKDF() function.

Detailed Description

An implementation of the Hash Based Key Derivation Function (RFC) and wrappers for AES-CCM*.

Author

Martin Gunnarsson marti.nosp@m.n.gu.nosp@m.nnars.nosp@m.son@.nosp@m.ri.se

adapted to libcoap Peter van der Stok consu.nosp@m.ltan.nosp@m.cy@va.nosp@m.nder.nosp@m.stok..nosp@m.org on request of Fairhair alliance 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_crypto.h.