cc3xx_key_agreement()

psa_status_t cc3xx_key_agreement	(	const psa_key_attributes_t *	attributes,
		const uint8_t *	priv_key,
		size_t	priv_key_size,
		const uint8_t *	publ_key,
		size_t	publ_key_size,
		uint8_t *	output,
		size_t	output_size,
		size_t *	output_length,
		psa_algorithm_t	alg
	)

Performs a raw key agreement (i.e. Elliptic Curve Diffie Hellman)

Parameters

[in]	attributes	Attributes of the key to use
[in]	priv_key	Private key of the initiating party
[in]	priv_key_size	Size in bytes of priv_key
[in]	publ_key	Public key of the peer party
[in]	publ_key_size	Size in bytes of publ_key
[out]	output	Buffer to hold the agreed key
[in]	output_size	Size in bytes of the output buffer
[out]	output_length	Size in bytes of the agreed key
[in]	alg	Algorithm

Return values

PSA_SUCCESS

on success. Error code from psa_status_t on failure