public static int crypto_kdf_derive_from_key( byte *subkey, UIntPtr subkeylen, ulong subkeyid, byte *ctx, byte *key) { return(_is32bits ? X86.crypto_kdf_derive_from_key(subkey, subkeylen, subkeyid, ctx, key) : X64.crypto_kdf_derive_from_key(subkey, subkeylen, subkeyid, ctx, key)); }