The decryption on your iPhone is apparently secure enough that law enforcement agencies are waiting in line to have Apple "crack" the lock and provide data to be used as evidence.
According to a report by CNET, Apple has the ability to decrypt seized iPhones and has created a waiting list to handle requests. At one point last summer, the wait was over 7 weeks long and one ATF agent reported that it took his request at least four months to be processed. The ATF had tried to decrypt the iPhone 4S of a Kentucky man accused of distributing crack cocaine and became so frustrated that it contacted Apple for assistance. That's where the wait started
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