How secure is Blackberry Persistence Store?

with a 64 bit long as key and code开发者_JAVA技巧sign, it's unbreakable, right?

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It's unbreakable until someone convinces you they need your password to perform some routine maintenance.

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It's unbreakable until you need to write down your password somewhere because it's so long and complicated that you can't remember it.

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It's unbreakable unless you use your pet's name as a password.

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