// Sign signs a data of a namespace
func (kml *KeyManagerLocal) Sign(proto string, namespace string, data []byte) ([]byte, error) {
keyDir, err := kml.getKeyDir(proto, namespace)
if err != nil {
return nil, err
}
privBytes, _ := ioutil.ReadFile(filepath.Join(keyDir, defaultPrivateKey))
return utils.SHA256Sign(privBytes, data)
}
// TestSHA256Sign
func TestSHA256Sign(t *testing.T) {
_, path, _, _ := runtime.Caller(0)
dir := filepath.Join(filepath.Dir(path), "testdata")
testPrivFile := filepath.Join(dir, "rsa_private_key.pem")
testContentFile := filepath.Join(dir, "hello.txt")
testSignFile := filepath.Join(dir, "hello.sig")
privBytes, _ := ioutil.ReadFile(testPrivFile)
signBytes, _ := ioutil.ReadFile(testSignFile)
contentBytes, _ := ioutil.ReadFile(testContentFile)
testBytes, err := utils.SHA256Sign(privBytes, contentBytes)
assert.Nil(t, err, "Fail to sign")
assert.Equal(t, testBytes, signBytes, "Fail to get valid sign data ")
}