mirror of
https://gogs.blitter.com/RLabs/xs
synced 2024-08-14 10:26:42 +00:00
f5be3578a8
2/3 Added vendor/ dir to lock down dependent pkg versions.
The author of git.schwanenlied.me/yawning/{chacha20,newhope,kyber}.git has copied
their repos to gitlab.com/yawning/ but some imports of chacha20 from newhope still
inconsistently refer to git.schwanenlied.me/, breaking build.
Licenses for chacha20 also changed from CC0 to AGPL, which may or may not be an
issue. Until the two aforementioned issues are resolved, locking to last-good
versions is probably the best way forward for now.
To build with vendored deps, use make VENDOR=1 clean all
3/3 Moved body of CI push script into bacillus/
52 lines
1,003 B
Go
52 lines
1,003 B
Go
package kcp
|
|
|
|
import (
|
|
"crypto/aes"
|
|
"crypto/cipher"
|
|
"crypto/md5"
|
|
"crypto/rand"
|
|
"io"
|
|
)
|
|
|
|
// Entropy defines a entropy source
|
|
type Entropy interface {
|
|
Init()
|
|
Fill(nonce []byte)
|
|
}
|
|
|
|
// nonceMD5 nonce generator for packet header
|
|
type nonceMD5 struct {
|
|
seed [md5.Size]byte
|
|
}
|
|
|
|
func (n *nonceMD5) Init() { /*nothing required*/ }
|
|
|
|
func (n *nonceMD5) Fill(nonce []byte) {
|
|
if n.seed[0] == 0 { // entropy update
|
|
io.ReadFull(rand.Reader, n.seed[:])
|
|
}
|
|
n.seed = md5.Sum(n.seed[:])
|
|
copy(nonce, n.seed[:])
|
|
}
|
|
|
|
// nonceAES128 nonce generator for packet headers
|
|
type nonceAES128 struct {
|
|
seed [aes.BlockSize]byte
|
|
block cipher.Block
|
|
}
|
|
|
|
func (n *nonceAES128) Init() {
|
|
var key [16]byte //aes-128
|
|
io.ReadFull(rand.Reader, key[:])
|
|
io.ReadFull(rand.Reader, n.seed[:])
|
|
block, _ := aes.NewCipher(key[:])
|
|
n.block = block
|
|
}
|
|
|
|
func (n *nonceAES128) Fill(nonce []byte) {
|
|
if n.seed[0] == 0 { // entropy update
|
|
io.ReadFull(rand.Reader, n.seed[:])
|
|
}
|
|
n.block.Encrypt(n.seed[:], n.seed[:])
|
|
copy(nonce, n.seed[:])
|
|
}
|