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As we reported yesterday, those in the crypto world are well-aware that Google and others have proven that SHA-1, the venerable cryptographic hash function standard, is dead. The consequences, however, are yet to be determined. Somewhere, it is safe to assume, between very very bad and catastrophic. Among many other potential points of disruption, this … Read more

It is now proven that the contents of a PDF hashed with SHA-1 can be changed without invalidating the signature, with significant consequences for older software implementations.

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