internal static extern int crypto_auth_hmacsha512_update( ref crypto_auth_hmacsha512_state state, in byte @in,
internal static extern int crypto_auth_hmacsha512_init( out crypto_auth_hmacsha512_state state, SecureMemoryHandle key, UIntPtr keylen);
internal static extern int crypto_auth_hmacsha512_init( out crypto_auth_hmacsha512_state state, in byte key,
internal static extern int crypto_auth_hmacsha512_final( ref crypto_auth_hmacsha512_state state, ref byte @out);
internal static extern int crypto_auth_hmacsha512_update( ref crypto_auth_hmacsha512_state state, ref uint @in, ulong inlen);
internal static extern int crypto_auth_hmacsha512_init( out crypto_auth_hmacsha512_state state, ref byte key, UIntPtr keylen);