Modules
	HMAC Key Derivation specific errors

Macros
#define	CRYS_HKDF_MAX_HASH_KEY_SIZE_IN_BYTES 512

#define	CRYS_HKDF_MAX_HASH_DIGEST_SIZE_IN_BYTES CRYS_HASH_SHA512_DIGEST_SIZE_IN_BYTES

Enumerations

Functions
CRYSError_t	CRYS_HKDF_KeyDerivFunc (CRYS_HKDF_HASH_OpMode_t HKDFhashMode, uint8_t Salt_ptr, size_t SaltLen, uint8_t Ikm_ptr, uint32_t IkmLen, uint8_t Info, uint32_t InfoLen, uint8_t Okm, uint32_t OkmLen, SaSiBool IsStrongKey)
	CRYS_HKDF_KeyDerivFunc performs the HMAC-based key derivation, according to RFC5869. More...

Detailed Description

#define CRYS_HKDF_MAX_HASH_DIGEST_SIZE_IN_BYTES CRYS_HASH_SHA512_DIGEST_SIZE_IN_BYTES

HKDF maximal HASH digest size in bytes.

Definition at line 58 of file crys_hkdf.h.

#define CRYS_HKDF_MAX_HASH_KEY_SIZE_IN_BYTES 512

HKDF maximal key size in words.

Definition at line 55 of file crys_hkdf.h.

Enum defining HKDF HASH available modes.

Definition at line 65 of file crys_hkdf.h.

CRYSError_t CRYS_HKDF_KeyDerivFunc	(	CRYS_HKDF_HASH_OpMode_t	HKDFhashMode,
		uint8_t *	Salt_ptr,
		size_t	SaltLen,
		uint8_t *	Ikm_ptr,
		uint32_t	IkmLen,
		uint8_t *	Info,
		uint32_t	InfoLen,
		uint8_t *	Okm,
		uint32_t	OkmLen,
		SaSiBool	IsStrongKey
	)

CRYS_HKDF_KeyDerivFunc performs the HMAC-based key derivation, according to RFC5869.

Returns: CRYS_OK on success.; A non-zero value on failure as defined crys_kdf_error.h, crys_hash_error or crys_hmac_error.h

Parameters

[in]	HKDFhashMode	The HKDF identifier of hash function to be used.
[in]	Salt_ptr	A pointer to a non secret random value. can be NULL.
[in]	SaltLen	The size of the salt_ptr.
[in]	Ikm_ptr	A pointer to a input key message.
[in]	IkmLen	The size of the input key message
[in]	Info	A pointer to an optional context and application specific information. can be NULL
[in]	InfoLen	The size of the info.
[in]	Okm	A pointer to a output key material.
[in]	OkmLen	The size of the output key material.
[in]	IsStrongKey	if TRUE , then no need to perform the extraction phase.