a 64 byte / 512 bit byte array which is the concatenation of the byte representations of two 256 bit big-endian ints X and Y
a 64 byte / 512 bit byte array which is the concatenation of the byte representations of two 256 bit big-endian ints X and Y
a 64 byte / 512 bit byte array which is the concatenation of the byte representations of two 256 bit big-endian ints X and Y
(Since version ) see corresponding Javadoc for more information.