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Initial aead/chacha20 support (ChaCha20_12)

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Signed-off-by: Russ Magee <rmagee@gmail.com>
This commit is contained in:
Russ Magee 2020-02-21 17:21:19 -08:00
parent 8de76520e4
commit e9aa0072a5
18 changed files with 2592 additions and 2 deletions
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13
xsnet/chan.go
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@ -21,6 +21,7 @@ import (
"log"
"blitter.com/go/cryptmt"
"github.com/aead/chacha20/chacha"
"golang.org/x/crypto/blowfish"
"golang.org/x/crypto/twofish"
@ -104,6 +105,18 @@ func (hc Conn) getStream(keymat []byte) (rc cipher.Stream, mc hash.Hash, err err
case CAlgCryptMT1:
rc = cryptmt.New(nil, nil, keymat)
log.Printf("[cipher CRYPTMT1 (%d)]\n", copts)
case CAlgChaCha20_12:
keymat = expandKeyMat(keymat, chacha.KeySize)
key = keymat[0:chacha.KeySize]
ivlen = chacha.INonceSize
iv = keymat[chacha.KeySize : chacha.KeySize+ivlen]
rc, err = chacha.NewCipher(iv, key, 20)
if err != nil {
log.Printf("[ChaCha20 config error]\n")
fmt.Printf("[ChaCha20 config error]\n")
}
// TODO: SetCounter() to something derived from key or nonce or extra keymat?
log.Printf("[cipher CHACHA20_12 (%d)]\n", copts)
default:
log.Printf("[invalid cipher (%d)]\n", copts)
fmt.Printf("DOOFUS SET A VALID CIPHER ALG (%d)\n", copts)