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krypto_test.go
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/
krypto_test.go
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package kr
import (
"bytes"
"testing"
)
func TestSealOpen(t *testing.T) {
wsPk, wsSk, err := GenKeyPair()
if err != nil {
t.Fatal(err)
}
ePk, eSk, err := GenKeyPair()
if err != nil {
t.Fatal(err)
}
msg, err := RandNBytes(31)
if err != nil {
t.Fatal(err)
}
c, err := sodiumBox(append([]byte(nil), msg...), wsPk, eSk)
if err != nil {
t.Fatal(err)
}
openedMsg, err := sodiumBoxOpen(c, ePk, wsSk)
if err != nil {
t.Fatal(err)
}
if bytes.Compare(openedMsg, msg) != 0 {
t.Fatalf("decryption does not match, \n%v \n!= \n%v\n", openedMsg, msg)
}
}
func TestSealChangeOpen(t *testing.T) {
wsPk, wsSk, err := GenKeyPair()
if err != nil {
t.Fatal(err)
}
ePk, eSk, err := GenKeyPair()
if err != nil {
t.Fatal(err)
}
msg, err := RandNBytes(31)
if err != nil {
t.Fatal(err)
}
c, err := sodiumBox(msg, wsPk, eSk)
if err != nil {
t.Fatal(err)
}
c[len(c)-1] ^= byte(1)
_, err = sodiumBoxOpen(c, ePk, wsSk)
if err == nil {
t.Fatal("decryption should fail")
}
}