lc_hash_crypt.h File Reference

#include "lc_aead.h"
#include "lc_hash_drbg.h"
#include "lc_hmac.h"
#include "lc_memset_secure.h"

Include dependency graph for lc_hash_crypt.h:

Go to the source code of this file.

Macros
#define	LC_HC_CTX_ON_STACK(name, hash)
	Allocate stack memory for the hash cryptor context.

Functions
static size_t	lc_hc_get_tagsize (struct lc_hc_cryptor *hc)
	Return maximum size of authentication tag.
int	lc_hc_alloc (const struct lc_hash *hash, struct lc_aead_ctx **ctx)
	Allocate Hash cryptor context on heap.

Macro Definition Documentation

LC_HC_CTX_ON_STACK

#define LC_HC_CTX_ON_STACK	(		name,
			hash )

Value:

        _Pragma("GCC diagnostic push")                                              \
                _Pragma("GCC diagnostic ignored \"-Wvla\"") _Pragma(                \
                        "GCC diagnostic ignored \"-Wdeclaration-after-statement\"") \
                        LC_ALIGNED_BUFFER(name##_ctx_buf,                           \
                                          LC_HC_CTX_SIZE(hash),                     \
                                          LC_HASH_COMMON_ALIGNMENT);                \
        struct lc_aead_ctx *name = (struct lc_aead_ctx *)name##_ctx_buf;            \
        LC_HC_SET_CTX(name, hash);                                                  \
        lc_aead_zero(name);                                                         \
        _Pragma("GCC diagnostic pop")

Allocate stack memory for the hash cryptor context.

Parameters

[in]	name	Name of the stack variable
[in]	hash	Hash implementation of type struct hash used for the HMAC authentication

Definition at line 101 of file lc_hash_crypt.h.

Function Documentation

lc_hc_alloc()

int lc_hc_alloc	(	const struct lc_hash *	hash,
		struct lc_aead_ctx **	ctx )

Allocate Hash cryptor context on heap.

Parameters

[in]	hash	Hash implementation of type struct hash used for the HMAC authentication
[out]	ctx	Allocated hash cryptor context

Returns

0 on success, < 0 on error

lc_hc_get_tagsize()

static size_t lc_hc_get_tagsize ( struct lc_hc_cryptor * hc )

inlinestatic

Return maximum size of authentication tag.

Parameters

[in]

hc

Hash cryptor context handle

Returns

size of tag

Definition at line 76 of file lc_hash_crypt.h.