-pub fn hkdf_extract_expand_thrice(salt: &[u8], ikm: &[u8]) -> ([u8; 32], [u8; 32], [u8; 32]) {
- hkdf_extract_expand!(salt, ikm, 3)
+pub fn hkdf_extract_expand_4x(salt: &[u8], ikm: &[u8]) -> ([u8; 32], [u8; 32], [u8; 32], [u8; 32]) {
+ hkdf_extract_expand!(salt, ikm, 4)