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don't panic about sha-1—fix it

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don't panic about sha-1—fix it

last week, google unveiled proof that it had successfully created a collision attack against the sha-1 hash algorithm, a security weakness long suspected to be exploitable with modern computing power.but what does that mean in practical terms? it depends on how you use sha-1 and in what context. the answers to those questions provide some idea of where to start moving away from sha-1 first.git-r-fixeddistributed source control system git has been implicated as a possible victim of sha-1 attacks. “if an attacker managed to create a sha-1 collision for a source file object (git blob),” wrote red hat engineer colin walters, “it would affect all revisions and checkouts—invalidating the...