SecretStoringUtils

Offers simple methods to securely store secrets in an Android Application. The encryption keys are randomly generated and securely managed by the key store, thus your secrets are safe. You only need to remember a key alias to perform encrypt/decrypt operations.

Android M++ On android M+, the keystore can generates and store AES keys via API. But below API M this functionality is not available.

Android [K-M[ For android >=L and

Sample usage: val secret = "The answer is 42" val KEncrypted = SecretStoringUtils.securelyStoreString(secret, "myAlias") //This can be stored anywhere e.g. encoded in b64 and stored in preference for example

    //to get back the secret, just call
    val kDecrypted = SecretStoringUtils.loadSecureSecret(KEncrypted, "myAlias")

You can also just use this utility to store a secret key, and use any encryption algorithm that you want.

Important: Keys stored in the keystore can be wiped out (depends of the OS version, like for example if you add a pin or change the schema); So you might and with a useless pile of bytes.