OK techie friends, help me out... what's a "digital signature"?http://www.nytimes.com/2016/10/06/technology/yahoo-email-tech-companies-government-investigations.html?_r=0 …
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In practical terms, this means anything you can convince FISC to stamp. At NSA, I saw live examples of the following:
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The usual suspects (emails, IPs, usernames, etc), but also cryptographic hashes that identify known files (MD5/SHA1)...
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Do you read anything into Charlie describing it as a digital signature "of a communication method"? (Not of a user/account/server)
End of conversation
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