Attorneys from the Justice Department have given official notice that they will appeal a federal judge's ruling in a closely watched case testing government controls on the export of encryption, according to an attorney involved in the case. After U.S. District Judge Marilyn Hall Patel ruled that the restrictions were unconstitutional, crypto attorneys predicted the government would appeal. The government's notice of appeal was filed in the case Monday. If upheld on appeal, the case could have major repercussions for the future of government export controls.