f[start+5]) f[start+5] = fieldSub(f[start+1], t) f[start+1] = fieldAdd(f[start+1], t) t = fieldMontgomeryMul(zeta, f[start+6]) f[start+6] = fieldSub(f[start+2], t) f[start+2] = fieldAdd(f[start+2], t) t = fieldMontgomeryMul(zeta, f[start+7]) f[start+7] = fieldSub(f[start+3], t) f[start+3] = fieldAdd(f[start+3], t) } for start := 0; start < 256; start += 4 { m++ zeta := zetas[m] t := fieldMontgomeryMul(zeta, f[start+2]) f[start+2] = fieldSub(f[start], t) f[start] = fieldAdd(f[start], t) t = fieldMontgomeryMul(zeta,...

			}
			if needCSize {
				needCSize = false
				if len(fieldBuf) < 8 {
					return ErrFormat
				}
				f.CompressedSize64 = fieldBuf.uint64()
			}
			if needHeaderOffset {
				needHeaderOffset = false
				if len(fieldBuf) < 8 {
					return ErrFormat
				}
				f.headerOffset = int64(fieldBuf.uint64())
			}
		case ntfsExtraID:
			if len(fieldBuf) < 4 {