#include "ext_headers.h"
#include "lc_hmac.h"
#include "lc_rng.h"
#include "lc_memset_secure.h"

Include dependency graph for lc_hkdf.h:

Macros
#define	LC_HKDF_CTX_ON_STACK(name, hashname)
	Allocate stack memory for the HKDF context.

#define	LC_HKDF_DRNG_CTX_SIZE(hashname) (sizeof(struct lc_rng_ctx) + LC_HKDF_CTX_SIZE(hashname))

#define	LC_HKDF_DRNG_SET_CTX(name, hashname) LC_HKDF_SET_CTX(name, hashname)

#define	LC_HKDF_RNG_CTX(name, hashname)

#define	LC_HKDF_DRNG_CTX_ON_STACK(name, hashname)
	Allocate stack memory for the HKDF DRNG context.

Functions
int	lc_hkdf_extract (struct lc_hkdf_ctx hkdf_ctx, const uint8_t ikm, size_t ikmlen, const uint8_t *salt, size_t saltlen)
	HMAC-based Extract-and-Expand Key Derivation Function (HKDF) - RFC5869 Extract phase.

int	lc_hkdf_expand (struct lc_hkdf_ctx hkdf_ctx, const uint8_t info, size_t infolen, uint8_t *dst, size_t dlen)
	HMAC-based Extract-and-Expand Key Derivation Function (HKDF) - RFC5869 Expand phase.

static void	lc_hkdf_zero (struct lc_hkdf_ctx *hkdf_ctx)
	Zeroize HKDF context allocated with either LC_HKDF_CTX_ON_STACK or hkdf_alloc.

int	lc_hkdf_alloc (const struct lc_hash hash, struct lc_hkdf_ctx *hkdf_ctx)
	Allocate HKDF context on heap.

void	lc_hkdf_zero_free (struct lc_hkdf_ctx *hkdf_ctx)
	Zeroize and free HKDF context.

static int	lc_hkdf (const struct lc_hash hash, const uint8_t ikm, size_t ikmlen, const uint8_t salt, size_t saltlen, const uint8_t info, size_t infolen, uint8_t *dst, size_t dlen)
	HMAC-based Extract-and-Expand Key Derivation Function (HKDF) - RFC5869 Complete implementation.

int	lc_hkdf_rng_alloc (struct lc_rng_ctx *state, const struct lc_hash hash)
	Allocation of a HKDF DRNG context.

Variables
const struct lc_rng *	lc_hkdf_rng

Macro Definition Documentation

◆ LC_HKDF_DRNG_CTX_SIZE

#define LC_HKDF_DRNG_CTX_SIZE ( hashname ) (sizeof(struct lc_rng_ctx) + LC_HKDF_CTX_SIZE(hashname))

Definition at line 205 of file lc_hkdf.h.

◆ LC_HKDF_DRNG_SET_CTX

#define LC_HKDF_DRNG_SET_CTX	(		name,
			hashname ) LC_HKDF_SET_CTX(name, hashname)

Definition at line 208 of file lc_hkdf.h.

◆ LC_HKDF_RNG_CTX

#define LC_HKDF_RNG_CTX	(		name,
			hashname )

Value:

        LC_RNG_CTX(name, lc_hkdf_rng);                                         \
        LC_HKDF_DRNG_SET_CTX(((struct lc_hkdf_ctx *)(name->rng_state)),        \
                             hashname);                                        \
        lc_rng_zero(name)

Definition at line 210 of file lc_hkdf.h.

Variable Documentation

◆ lc_hkdf_rng

const struct lc_rng* lc_hkdf_rng

extern

Macros