qbit/go
1
0
Fork 0
mirror of https://github.com/golang/go synced 2024-11-12 05:40:22 -07:00
Code Releases Activity

crypto/aes: fix comment

Browse Source 
Fixes #3589.

R=golang-dev, iant
CC=golang-dev
https://golang.org/cl/6190044
This commit is contained in:
Russ Cox 2012-05-07 16:45:34 -04:00
parent dc6ec74f07
commit 36675daa0f
1 changed files with 2 additions and 2 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

4
src/pkg/crypto/aes/const.go
View File

@ -11,11 +11,11 @@ package aes
// http://www.csrc.nist.gov/publications/fips/fips197/fips-197.pdf
// AES is based on the mathematical behavior of binary polynomials
// (polynomials over GF(2)) modulo the irreducible polynomial x⁸ + x⁴ + x² + x + 1.
// (polynomials over GF(2)) modulo the irreducible polynomial x⁸ + x⁴ + x³ + x + 1.
// Addition of these binary polynomials corresponds to binary xor.
// Reducing mod poly corresponds to binary xor with poly every
// time a 0x100 bit appears.
const poly = 1<<8 | 1<<4 | 1<<3 | 1<<1 | 1<<0 // x⁸ + x⁴ + x² + x + 1
const poly = 1<<8 | 1<<4 | 1<<3 | 1<<1 | 1<<0 // x⁸ + x⁴ + x³ + x + 1
// Powers of x mod poly in GF(2).
var powx = [16]byte{