public async Task Avoid_using_the_same_IV()
{
using var key = EncryptionKey.CreateDefault();
string keyMaterialFolder = Path.GetTempPath() + Guid.NewGuid().ToString();
var sut = new FolderBasedKeyValueStore(
keyMaterialFolder,
"password");
//Same encryption with the same key will return the very same result.
var encrypted = await sut.EncryptAsync(key).ConfigureAwait(false);
var otherEncrypted = await sut.EncryptAsync(key).ConfigureAwait(false);
//Same key encrypted two times should generate a different result due to different IV used
Assert.NotEqual(encrypted, otherEncrypted);
}
public async Task Unable_to_decrypt_if_wrong_password()
{
using var key = new AesEncryptionKey();
string keyMaterialFolder = Path.GetTempPath() + Guid.NewGuid().ToString();
var sut = new FolderBasedKeyValueStore(
keyMaterialFolder,
"password");
await sut.EncryptAsync(key).ConfigureAwait(false);
//We should not be able to create a sut where already exists a key
//with an invalid password
Assert.Throws <AggregateException>(() => new FolderBasedKeyValueStore(
keyMaterialFolder,
"another-password"));
}