internal static extern int crypto_hash_sha256_update( ref crypto_hash_sha256_state state, ref uint @in, ulong inlen);
internal static extern int crypto_hash_sha256_init( out crypto_hash_sha256_state state);
internal static extern int crypto_hash_sha256_final( ref crypto_hash_sha256_state state, ref byte @out);
internal static extern int crypto_hash_sha256_final( ref crypto_hash_sha256_state state, SecureMemoryHandle @out);
internal static extern int crypto_hash_sha256_update( ref crypto_hash_sha256_state state, in uint @in,