Update

FBI says it may have found a way to unlock shooter's iPhone

iphone5c camera

iPhone 5C

Credit: John Karakatsanis

A court hearing that was scheduled for Tuesday has been postponed

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The FBI says it may have discovered a way to break into the iPhone used by one of the San Bernardino mass shooters, and an important court hearing in the case that was scheduled for Tuesday has been postponed.

"On Sunday, March 20, 2016, an outside party demonstrated to the FBI a possible method for unlocking Farook’s iPhone," lawyers for the government said in a court filing Monday afternoon, referring to the shooter Syed Farook.

"Testing is required to determine whether it is a viable method that will not compromise data on Farook’s iPhone. If the method is viable, it should eliminate the need for the assistance from Apple set forth in the All Writs Act Order in this case," the government lawyers wrote.

The court filing doesn't describe the proposed method, but the government says it received suggestions for how it could break into the phone from various outside parties.

It’s an unexpected development in a high-profile case that has pitted Apple against the U.S. Department of Justice. The conflict highlights the tension between the need for strong encryption and the requirements of law enforcement to investigate crimes.

The FBI has said it needs help getting around Apple’s encryption so it can access Farook's device, an iPhone 5C. It says the phone may hold clues about whether Farook and his wife acted alone when they went on a killing spree in San Bernardino last December. The government has said the couple were suspected terrorist sympathizers.

Apple has fought back, saying providing access to the device would require it to create a new version of its iOS software for that purpose, and that doing so would weaken security for all its users.

Apple is also worried that the case could set a legal precedent that would require Apple and other companies to give the government access to encrypted personal data in the future.

If the government has indeed found its own way in, it may get the data it needs without a court battle, meaning no precedent will be set.

In February, Apple said it would fight a U.S. magistrate judge's order requiring it to assist the FBI. A hearing was set to take place in Los Angeles Tuesday afternoon, where lawyers for Apple and the government were expected to square off. It's unclear now if the hearing will go ahead.

In its court filing Monday, the FBI says it has continued to look for a way to access the data on the phone, even as it pursues its case against Apple.

It doesn't describe the method it plans to try, but some researchers have theorized that the device could be accessed through cloning.

A key protection that the government is up against is a mechanism that will permanently lock the phone if an incorrect pass code is tried 10 times.

With cloning, multiple copies are made of the phone’s memory and pass codes are tried against each copy. It doesn’t matter if one copy becomes locked, because investigators can move on to another copy.

In essence, it gives the FBI multiple tries at guessing the pass code without having to worry about the phone destroying its data.

The method was brought up at a hearing of the House Judiciary Committee earlier this month, when Representative Darrell Issa, a California Republican, suggested it could be used. But to date, no one has publicly demonstrated that it would work.

It's unknown if that's the method the government now plans to use, and other techniques may have been suggested as well.

Whatever method it is, the government now wants to postpone Tuesday's hearing until it can try it out. It suggests it will file a status report by April 5, when presumably it will reveal the outcome of its efforts. 

In a briefing with reporters, lawyers for Apple said they have no idea what method the government proposes to use, or whether it will work. But if it has found a new vulnerability in iOS, Apple will want to finds out what it is.

For now, the effect of the government's filing is to suspend the effect of the order requiring Apple to help the FBI. If the government is successful in accessing the phone's content, the case involving Farook's phone becomes moot.

But Apple's lawyers said the company's position hasn't changed, and if the government finds that it still needs Apple's help to break circumvent the iPhone's security, Apple will continue to resist.

Note: This story was updated on 21-MARCH-2016 with Apple's statements and confirmation that Tuesday's court hearing was postponed. -STEVE RAGAN

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