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package main
import (
"encoding/hex"
"testing"
)
type XChaCha20Test struct {
Nonce string
Key string
PT string
CT string
}
func TestXChaCha20(t *testing.T) {
tests := []XChaCha20Test{
{
Nonce: "000000000000000000000000000000000000000000000000",
Key: "0000000000000000000000000000000000000000000000000000000000000000",
PT: "00000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000",
CT: "789e9689e5208d7fd9e1f3c5b5341f48ef18a13e418998addadd97a3693a987f8e82ecd5c1433bfed1af49750c0f1ff29c4174a05b119aa3a9e8333812e0c0feb1299c5949d895ee01dbf50f8395dd84",
},
{
Nonce: "0f0f0f0f0f0f0f0f0f0f0f0f0f0f0f0f0f0f0f0f0f0f0f0f",
Key: "0f0f0f0f0f0f0f0f0f0f0f0f0f0f0f0f0f0f0f0f0f0f0f0f0f0f0f0f0f0f0f0f",
PT: "0f0f0f0f0f0f0f0f0f0f0f0f0f0f0f0f0f0f0f0f",
CT: "e1a046aa7f71e2af8b80b6408b2fd8d3a350278cde79c94d9efaa475e1339b3dd490127b",
},
{
Nonce: "d9a8213e8a697508805c2c171ad54487ead9e3e02d82d5bc",
Key: "979196dbd78526f2f584f7534db3f5824d8ccfa858ca7e09bdd3656ecd36033c",
PT: "43cc6d624e451bbed952c3e071dc6c03392ce11eb14316a94b2fdc98b22fedea",
CT: "53c1e8bef2dbb8f2505ec010a7afe21d5a8e6dd8f987e4ea1a2ed5dfbc844ea400db34496fd2153526c6e87c36694200",
},
}
for _, test := range tests {
nonce, err := hex.DecodeString(test.Nonce)
if err != nil {
panic(err)
}
key, err := hex.DecodeString(test.Key)
if err != nil {
panic(err)
}
pt, err := hex.DecodeString(test.PT)
if err != nil {
panic(err)
}
func() {
var nonceArray [24]byte
var keyArray [32]byte
copy(nonceArray[:], nonce)
copy(keyArray[:], key)
// test encryption
ct := XChaCha20Poly1305Encrypt(
nil,
&nonceArray,
pt,
nil,
&keyArray,
)
ctHex := hex.EncodeToString(ct)
if ctHex != test.CT {
t.Fatal("encryption failed, expected:", test.CT, "got", ctHex)
}
// test decryption
ptp, err := XChaCha20Poly1305Decrypt(
nil,
&nonceArray,
ct,
nil,
&keyArray,
)
if err != nil {
t.Fatal(err)
}
ptHex := hex.EncodeToString(ptp)
if ptHex != test.PT {
t.Fatal("decryption failed, expected:", test.PT, "got", ptHex)
}
}()
}
}
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