size224 } func (d *Digest) BlockSize() int { return blockSize } func (d *Digest) Write(p []byte) (nn int, err error) { nn = len(p) d.len += uint64(nn) if d.nx > 0 { n := copy(d.x[d.nx:], p) d.nx += n if d.nx == chunk { block(d, d.x[:]) d.nx = 0 } p = p[n:] } if len(p) >= chunk { n := len(p) &^ (chunk - 1) block(d, p[:n]) p = p[n:] } if len(p) > 0 { d.nx = copy(d.x[:], p) } return } func (d *Digest) Sum(in []byte) []byte { fips140.RecordApproved() // Make a copy of d so that caller can keep writing and...