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/*
Copyright The ocicrypt Authors.
Licensed under the Apache License, Version 2.0 (the "License");
you may not use this file except in compliance with the License.
You may obtain a copy of the License at
http://www.apache.org/licenses/LICENSE-2.0
Unless required by applicable law or agreed to in writing, software
distributed under the License is distributed on an "AS IS" BASIS,
WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
See the License for the specific language governing permissions and
limitations under the License.
*/
package blockcipher
import (
"bytes"
"io"
"testing"
)
func TestBlockCipherHandlerCreate(t *testing.T) {
_, err := NewLayerBlockCipherHandler()
if err != nil {
t.Fatal(err)
}
}
func TestBlockCipherEncryption(t *testing.T) {
var (
layerData = []byte("this is some data")
)
h, err := NewLayerBlockCipherHandler()
if err != nil {
t.Fatal(err)
}
layerDataReader := bytes.NewReader(layerData)
ciphertextReader, finalizer, err := h.Encrypt(layerDataReader, AES256CTR)
if err != nil {
t.Fatal(err)
}
ciphertext := make([]byte, 1024)
encsize, err := ciphertextReader.Read(ciphertext)
if err != io.EOF {
t.Fatal("Expected EOF")
}
ciphertextTestReader := bytes.NewReader(ciphertext[:encsize])
lbco, err := finalizer()
if err != nil {
t.Fatal(err)
}
// Use a different instantiated object to indicate an invokation at a diff time
plaintextReader, _, err := h.Decrypt(ciphertextTestReader, lbco)
if err != nil {
t.Fatal(err)
}
plaintext := make([]byte, 1024)
decsize, err := plaintextReader.Read(plaintext)
if err != nil && err != io.EOF {
t.Fatal("Reading the plaintext should not have failed")
}
if string(plaintext[:decsize]) != string(layerData) {
t.Fatal("Decrypted data is incorrect")
}
}
func TestBlockCipherEncryptionInvalidKey(t *testing.T) {
var (
layerData = []byte("this is some data")
)
h, err := NewLayerBlockCipherHandler()
if err != nil {
t.Fatal(err)
}
layerDataReader := bytes.NewReader(layerData)
ciphertextReader, finalizer, err := h.Encrypt(layerDataReader, AES256CTR)
if err != nil {
t.Fatal(err)
}
// Use a different instantiated object to indicate an invokation at a diff time
bc2, err := NewAESCTRLayerBlockCipher(256)
if err != nil {
t.Fatal(err)
}
ciphertext := make([]byte, 1024)
encsize, err := ciphertextReader.Read(ciphertext)
if err != io.EOF {
t.Fatal("Expected EOF")
}
ciphertextTestReader := bytes.NewReader(ciphertext[:encsize])
lbco, err := finalizer()
if err != nil {
t.Fatal(err)
}
lbco.Private.SymmetricKey = []byte("aaa34567890123456789012345678901")
plaintextReader, _, err := bc2.Decrypt(ciphertextTestReader, lbco)
if err != nil {
t.Fatal(err)
}
plaintext := make([]byte, 1024)
_, err = plaintextReader.Read(plaintext)
if err == nil || err == io.EOF {
t.Fatal("Read() should have failed due to wrong key")
}
}
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