ocrypto_ecdh_p521_common_secret()

int ocrypto_ecdh_p521_common_secret	(	uint8_t	r[66],
		const uint8_t	sk[66],
		const uint8_t	pk[132]
	)

ECDH P-521 common secret.

The common secret is computed from both the client's public key pk and the server's secret key sk and put into r.

Parameters

[out]	r	Generated common secret.
	sk	Server private key.
	pk	Client public key.

Return values

0	If sk is a valid secret key and pk is a valid public key.
-1	Otherwise.

Remarks

r may be same as sk or pk.