> There was another story about a memo with “top secret” or “secret “ stamps on pages, that an agency had distributed internally. The information was like, use

> There was another story about a memo with “top secret” or “secret “ stamps on pages, that an agency had distributed internally. The information was like, use AES-256 for important data, or key length 3072 with RSA. It was all well known material, nothing secret. I was like, WTF! Just because there are public recommendations now days does not make the information not classified. There’s a chance that in the past the recommendation was set out because of attacks that the NSA thought only they are knew about. Interestingly enough I’ve seen the recommendations change depending on the classification of the document in some leaked secret document there was a recommendation to use some algorithm (RC4?). In the top secret document the recommendation was the same but to discard the first 3072 bytes to avoid a key stream bias vulnerability.