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mitigate timing attacks by taking no shortcuts #6

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@cowens cowens commented Dec 11, 2017

The eq operator stops comparing when it is obvious two strings aren't equal. An attacker can use this information to determine the right hash one character at a time. We can remove this information leak by using a string comparison function that uses no shortcut logic.

The eq operator stops comparing when it is obvious two strings aren't equal. An attacker can use this information to determine the right hash one character at a time.  We can remove this information leak by using a string comparison function that uses no shortcut logic.
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