Function ed25519_to_curve25519::ed25519_sk_to_curve25519

pub fn ed25519_sk_to_curve25519(sk: [u8; 32]) -> [u8; 32]

Convert Ed25519 secret key to Curve25519 secret key.

Example

use ed25519_to_curve25519::*;
let ed25519_sk = [
    202, 104, 239, 81, 53, 110, 80, 252, 198, 23, 155, 162, 215, 98, 223, 173, 227, 188, 110,
    54, 127, 45, 185, 206, 174, 29, 44, 147, 76, 66, 196, 195,
];
let curve25519_sk = [
    200, 255, 64, 61, 17, 52, 112, 33, 205, 71, 186, 13, 131, 12, 241, 136, 223, 5, 152, 40,
    95, 187, 83, 168, 142, 10, 234, 215, 70, 210, 148, 104,
];
assert_eq!(ed25519_sk_to_curve25519(ed25519_sk), curve25519_sk)