Function cfm_keystore_put_secret 

#[unsafe(no_mangle)]
pub extern "C" fn cfm_keystore_put_secret(
    ks: *mut FFIKeystore,
    module_id: *const c_char,
    app_id: *const c_char,
    key_id: *const c_char,
    secret_key: *mut FFIKey,
) -> u32

Insert a secret key into the private compartment.