@Override
    public String getEncryptionKeySetting() {
        return "cas.authn.mfa.gauth.crypto.encryption.key";
    }
This is {@link OneTimeTokenAccountCipherExecutor}.

@author Misagh Moayyed
@since 5.3.0
support/cas-server-support-otp-mfa-core/src/main/java/org/apereo/cas/otp/repository/credentials/OneTimeTokenAccountCipherExecutor.java