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|
package internal_test
import (
"bytes"
"fmt"
"testing"
"github.com/nerdsec/goaes/internal"
)
const (
totalIterationTests = 10
minSize = 32
minWrappedDEKSize = 60
//nolint:gosec // this is only for testing and not used for any implementation
validPassphrase = "dJyHOdMbG94EMvQGQrs6YZiXGiAGQgDYtx6+eqLufQg="
)
func TestNewDEK(t *testing.T) {
for i := range totalIterationTests {
t.Run(fmt.Sprintf("TestNewDek %d", i), func(t *testing.T) {
dek, err := internal.NewDEK()
if err != nil {
t.Errorf("failed to create dek. error: %v", err)
}
if len(dek) < minSize {
t.Errorf("dek too small, dek: %v len: %d", dek, len(dek))
}
})
}
}
func TestNewSalt(t *testing.T) {
for i := range totalIterationTests {
t.Run(fmt.Sprintf("TestNewSalt %d", i), func(t *testing.T) {
salt, err := internal.NewSalt()
if err != nil {
t.Errorf("failed to create salt. error: %v", err)
}
if len(salt) < minSize {
t.Errorf("salt too small, salt: %v len: %d", salt, len(salt))
}
})
}
}
func TestNewKEKFromEnvB64(t *testing.T) {
tests := []struct {
name string
passphrase string
salt internal.Salt
wantErr bool
}{
{
name: "Valid base64",
passphrase: validPassphrase,
salt: []byte("kD+tNSxjss1XchcyyrKJyZBGg2mdmhh/IO3I87WW2Ds="),
wantErr: false,
},
{
name: "Invalid passphrase base64",
passphrase: "dJyHOdMbG94EMvQGQrs6YZiXGiAGQgDYtx6eqLufQg=",
salt: []byte("kD+tNSxjss1XchcyyrKJyZBGg2mdmhh/IO3I87WW2Ds="),
wantErr: true,
},
{
name: "Empty seed",
passphrase: validPassphrase,
salt: []byte(""),
wantErr: false,
},
}
for _, tt := range tests {
t.Run(tt.name, func(t *testing.T) {
_, gotErr := internal.NewKEKFromEnvB64(tt.passphrase, tt.salt)
if gotErr != nil {
if !tt.wantErr {
t.Errorf("NewKEKFromEnvB64() failed: %v", gotErr)
}
return
}
if tt.wantErr {
t.Fatal("NewKEKFromEnvB64() succeeded unexpectedly")
}
})
}
}
func TestWrapDEK(t *testing.T) {
kek, err := internal.NewKEKFromEnvB64(
validPassphrase,
[]byte("salt"),
)
if err != nil {
t.Fatalf("failed to create kek. error %v", err)
}
dek, err := internal.NewDEK()
if err != nil {
t.Fatalf("failed to create dek. error %v", err)
}
edek, err := internal.WrapDEK(dek, kek)
if err != nil {
t.Fatalf("failed to create edek. error %v", err)
}
if bytes.Equal(dek, edek) {
t.Error("dek should not be the same as edek")
}
if len(edek) < minWrappedDEKSize {
t.Errorf("edek too small, edek: %v len: %d", edek, len(edek))
}
}
func TestUnwrapDEK(t *testing.T) {
kek, err := internal.NewKEKFromEnvB64(
validPassphrase,
[]byte("salt"),
)
if err != nil {
t.Fatalf("failed to create kek. error %v", err)
}
dek, err := internal.NewDEK()
if err != nil {
t.Fatalf("failed to create dek. error %v", err)
}
edek, err := internal.WrapDEK(dek, kek)
if err != nil {
t.Fatalf("failed to create edek. error %v", err)
}
if bytes.Equal(dek, edek) {
t.Error("dek should not be the same as edek")
}
if len(edek) < minWrappedDEKSize {
t.Errorf("edek too small, edek: %v len: %d", edek, len(edek))
}
unwrapped, err := internal.UnwrapDEK(edek, kek)
if err != nil {
t.Fatalf("failed to create edek. error %v", err)
}
if !bytes.Equal(dek, unwrapped) {
t.Errorf("unwrapped key doesn't match, %v %v", edek, unwrapped)
}
}
func TestEncryptData(t *testing.T) {
input := []byte("hello")
dek, err := internal.NewDEK()
if err != nil {
t.Fatalf("failed to create dek. error %v", err)
}
ct, err := internal.EncryptData(input, dek)
if err != nil {
t.Fatalf("failed to encrypt. error %v", err)
}
if bytes.Equal(input, ct) {
t.Error("input wasn't encrypted")
}
}
func TestDecryptData(t *testing.T) {
input := []byte("hello")
dek, err := internal.NewDEK()
if err != nil {
t.Fatalf("failed to create dek. error %v", err)
}
ct, err := internal.EncryptData(input, dek)
if err != nil {
t.Fatalf("failed to encrypt. error %v", err)
}
pt, err := internal.DecryptData(ct, dek)
if err != nil {
t.Fatalf("failed to decrypt. error %v", err)
}
if !bytes.Equal(input, pt) {
t.Error("decrypted doesn't match input")
}
}
|
