ocrypto_ascon_aead128_decrypt()

int ocrypto_ascon_aead128_decrypt	(	uint8_t *	pt,
		const uint8_t	tag[16],
		const uint8_t *	ct,
		size_t	ct_len,
		const uint8_t	key[16],
		const uint8_t	nonce[16],
		const uint8_t *	aa,
		size_t	aa_len )

#include <crypto/nrf_oberon/include/ocrypto_ascon_aead.h>

Ascon-AEAD128 decryption.

Parameters

[out]	pt	Plaintext.
	tag	Authentication tag.
	ct	Ciphertext.
	ct_len	Ciphertext length.
	key	Ascon-AEAD128 key.
	nonce	Nonce.
	aa	Additional authentication data.
	aa_len	Additional authentication data length.

Remarks

ct may be same as pt.

Return values

0	If tag is valid.
-1	Otherwise.