cracen_key_agreement()

psa_status_t cracen_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 )

#include <subsys/nrf_security/src/drivers/cracen/cracenpsa/include/cracen_psa_key_derivation.h>

Perform a key agreement operation.

Parameters

[in]	attributes	Key attributes for the private key.
[in]	priv_key	Private key material.
[in]	priv_key_size	Size of the private key in bytes.
[in]	publ_key	Public key material.
[in]	publ_key_size	Size of the public key in bytes.
[out]	output	Buffer to store the shared secret.
[in]	output_size	Size of the output buffer in bytes.
[out]	output_length	Length of the generated shared secret in bytes.
[in]	alg	Key agreement algorithm.

Return values

PSA_SUCCESS	The operation completed successfully.
PSA_ERROR_INVALID_HANDLE	The key handle is invalid.
PSA_ERROR_NOT_SUPPORTED	The algorithm is not supported.
PSA_ERROR_BUFFER_TOO_SMALL	The output buffer is too small.