static AeadCipher makeAesGcmDecryptionCipher(SecretSharedKey secretSharedKey) {
        return makeAesGcmCipher(secretSharedKey, false);
    }
Creates an AES-GCM cipher that can be used to decrypt ciphertext that was previously
encrypted with the given secret key.
security-utils/src/main/java/com/yahoo/security/SharedKeyGenerator.java