ocrypto_chacha20_poly1305_final_dec()

int ocrypto_chacha20_poly1305_final_dec	(	ocrypto_chacha20_poly1305_ctx *	ctx,
		const uint8_t	tag[(16)] )

#include <crypto/nrf_oberon/include/ocrypto_chacha20_poly1305.h>

ChaCha20-Poly1305 final decoder step.

The generator state ctx is used to finalize the decryption and check the tag.

Parameters

ctx	Generator state.
tag	Received authentication tag.

Return values

0	If tag is valid.
-1	Otherwise.