x.cmpGeq(m.nat) == yes { return nil, errors.New("input overflows the modulus") } return x, nil } // SetOverflowingBytes assigns x = b, where b is a slice of big-endian bytes. // SetOverflowingBytes returns an error if b has a longer bit length than m, but // reduces overflowing values up to 2^⌈log2(m)⌉ - 1. // // The output will be resized to the size of m and overwritten. func (x *Nat) SetOverflowingBytes(b []byte, m *Modulus) (*Nat, error) { x.resetFor(m) if err := x.setBytes(b); err != nil { return...