restic/key_int_test.go

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2014-09-23 20:39:12 +00:00
package khepri
import (
"bytes"
"encoding/hex"
"testing"
)
var test_values = []struct {
ekey, skey []byte
ciphertext []byte
plaintext []byte
should_panic bool
}{
{
ekey: decode_hex("303e8687b1d7db18421bdc6bb8588ccadac4d59ee87b8ff70c44e635790cafef"),
skey: decode_hex("cc8d4b948ee0ebfe1d415de921d10353ef4d8824cb80b2bcc5fbff8a9b12a42c"),
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ciphertext: decode_hex("fe85b32b108308f6f8834a96e463b66e0eae6a0f1e9809da0773a2db12a24528bce3220e6a5700b40bd45ef2a2ce96a7fc0a895a019d4a77eef5fc9579297059c6d0"),
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plaintext: []byte("Dies ist ein Test!"),
},
}
func decode_hex(s string) []byte {
d, _ := hex.DecodeString(s)
return d
}
// returns true if function called panic
func should_panic(f func()) (did_panic bool) {
defer func() {
if r := recover(); r != nil {
did_panic = true
}
}()
f()
return false
}
func TestCrypto(t *testing.T) {
r := &Key{}
for _, tv := range test_values {
// test encryption
r.master = &keys{
Encrypt: tv.ekey,
Sign: tv.skey,
}
msg, err := r.encrypt(r.master, tv.plaintext)
if err != nil {
t.Fatal(err)
}
// decrypt message
_, err = r.decrypt(r.master, msg)
if err != nil {
t.Fatal(err)
}
// change hmac, this must fail
msg[len(msg)-8] ^= 0x23
if _, err = r.decrypt(r.master, msg); err != ErrUnauthenticated {
t.Fatal("wrong HMAC value not detected")
}
// test decryption
p, err := r.decrypt(r.master, tv.ciphertext)
if err != nil {
t.Fatal(err)
}
if !bytes.Equal(p, tv.plaintext) {
t.Fatalf("wrong plaintext: expected %q but got %q\n", tv.plaintext, p)
}
}
}