public void setEncryptionCipherKey(byte[] encryptionCipherKey) {
        this.encryptionCipherKey = encryptionCipherKey;
    }
Sets the encryption key to use for encryption operations.

@param encryptionCipherKey the encryption key to use for encryption operations.
@see #setCipherService for a description of the various {@code get/set*Key} methods.
core/src/main/java/org/apache/shiro/mgt/AbstractRememberMeManager.java