AES-GCM

Description

Interface to single pass stream cipher with authentication from a single key (NIST SP 800-38D)

Functions
void	MODA_AES_GCM_Encrypt (const struct aes_ctxt *aes, const uint8_t *iv, uint32_t ivSize, uint8_t *out, const uint8_t *in, uint32_t textSize, const uint8_t *aad, uint32_t aadSize, uint8_t *t, uint8_t tSize)
	AES GCM Encrypt. More...
bool	MODA_AES_GCM_Decrypt (const struct aes_ctxt *aes, const uint8_t *iv, uint32_t ivSize, uint8_t *out, const uint8_t *in, uint32_t textSize, const uint8_t *aad, uint32_t aadSize, const uint8_t *t, uint8_t tSize)
	AES GCM Decrypt. More...

Function Documentation

bool MODA_AES_GCM_Decrypt	(	const struct aes_ctxt *	aes,
		const uint8_t *	iv,
		uint32_t	ivSize,
		uint8_t *	out,
		const uint8_t *	in,
		uint32_t	textSize,
		const uint8_t *	aad,
		uint32_t	aadSize,
		const uint8_t *	t,
		uint8_t	tSize
	)

AES GCM Decrypt.

Note

if in == out then encryption will be performed in place

tSize is valid in the range (0..16)

Parameters

aes	block cipher expanded key
iv	initialisation vector
ivSize	byte size of iv
out	output buffer
in	input buffer
textSize	byte size of in
*aad	additional data authenticated but not encrypted/decrypted
aadSize	byte size of aad
*t	optional authentication tag input buffer
tSize	size of t

Returns

true if input is valid

Examples:

test_aes_gcm.c.

void MODA_AES_GCM_Encrypt	(	const struct aes_ctxt *	aes,
		const uint8_t *	iv,
		uint32_t	ivSize,
		uint8_t *	out,
		const uint8_t *	in,
		uint32_t	textSize,
		const uint8_t *	aad,
		uint32_t	aadSize,
		uint8_t *	t,
		uint8_t	tSize
	)

AES GCM Encrypt.

Note

if in == out then encryption will be performed in place

tSize is valid in the range (0..16)

Parameters

aes	block cipher expanded key
iv	initialisation vector
ivSize	byte size of iv
out	output buffer
in	input buffer
textSize	byte size of in
aad	additional data authenticated but not encrypted/decrypted
aadSize	byte size of aad
t	optional authentication tag input buffer
tSize	byte size of t

Examples:

test_aes_gcm.c.