internal static extern int crypto_generichash_blake2b_update( ref crypto_generichash_blake2b_state state, in byte @in,
internal static extern int crypto_generichash_blake2b_init( out crypto_generichash_blake2b_state state, SecureMemoryHandle key, UIntPtr keylen, UIntPtr outlen);
internal static extern int crypto_generichash_blake2b_final( ref crypto_generichash_blake2b_state state, ref byte @out, UIntPtr outlen);
internal static extern int crypto_generichash_blake2b_init( out crypto_generichash_blake2b_state state, IntPtr key, UIntPtr keylen, UIntPtr outlen);
internal static extern int crypto_generichash_blake2b_update( ref crypto_generichash_blake2b_state state, ref byte @in, ulong inlen);