code: public static PublicKey getEncryptCertPublicKey() {
  		if (null == encryptCert) {
  			String path = SDKConfig.getConfig().getEncryptCertPath();
  			if (!isEmpty(path)) {
  				encryptCert = initCert(path);
  				return encryptCert.getPublicKey();
  			} else {
  				LogUtil.writeErrorLog("acpsdk.encryptCert.path is empty");
  				return null;
  			}
  		} else {
  			return encryptCert.getPublicKey();
  		}
  	}
docs: 获取敏感信息加密证书PublicKey
  
  @return