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crypto/aes: fix comment

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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
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4
src/pkg/crypto/aes/const.go
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@ -11,11 +11,11 @@ package aes
// http://www.csrc.nist.gov/publications/fips/fips197/fips-197.pdf // http://www.csrc.nist.gov/publications/fips/fips197/fips-197.pdf
// AES is based on the mathematical behavior of binary polynomials // 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. // Addition of these binary polynomials corresponds to binary xor.
// Reducing mod poly corresponds to binary xor with poly every // Reducing mod poly corresponds to binary xor with poly every
// time a 0x100 bit appears. // 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). // Powers of x mod poly in GF(2).
var powx = [16]byte{ var powx = [16]byte{