http://i2p-javadocs.i2p/net/i2p/crypto/eddsa/math/ed25519/Ed25519ScalarOps.html
Object clone , equals , finalize , getClass , hashCode , notify , notifyAll , toString , wait , wait , wait Constructor Details Ed25519ScalarOps public Ed25519ScalarOps () Method Details reduce public byte[] reduce (byte[] s) Reduction modulo the group order $q$. Input:
$s[0]+256*s[1]+\dots+256^{63}*s[63] = s$ Output:
$s[0]+256*s[1]+\dots+256^{31}*s[31] = s \bmod q$
where $q = 2^{252} + 27742317777372353535851937790883648493$.