持久化加密数据

Credentials Store API 可以安全的存储敏感数据，例如密码，服务器地址等。

如何使用

使用PasswordSafe 存储证书

下列示例中所使用的公共方法

private CredentialAttributes createCredentialAttributes(String key) {
  return new CredentialAttributes(
    CredentialAttributesKt.generateServiceName("MySystem", key)
  );
}

存储证书

CredentialAttributes credentialAttributes = createCredentialAttributes(serverId); // see previous sample
Credentials credentials = new Credentials(username, password);
PasswordSafe.getInstance().set(credentialAttributes, credentials);
//删除证书
PasswordSafe.getInstance().set(credentialAttributes, null);

取回存储的证书

String key = null; // e.g. serverURL, accountID
CredentialAttributes credentialAttributes = createCredentialAttributes(key);

Credentials credentials = PasswordSafe.getInstance().get(credentialAttributes);
if (credentials != null) {
  String password = credentials.getPasswordAsString();
}

// or get password only
String password = PasswordSafe.getInstance().getPassword(credentialAttributes);

存储

操作系统不一样，默认存储格式也不一样

系统	存储
windows	KeePass 格式文件
macOS	Security Framework
linux	Secret Service API using libsecret

用户可以在 Settings/Preferences | Appearance & Behavior | System Settings | Passwords. 中修改默认存储方式