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24

Is this number specified anywhere? It was formally specified in this RFC as the 1536 bit MODP group (although its use predates that RFC). However, from what I've seen, the 2048 bit MODP group from that same document is actually more popular. Why was this particular number picked? Well, it's a safe prime; in addition, the leading 64 bits and the ...


3

To clarify scope: FIPS 140-2 itself doesn't say anything about DSS, though it has 186-2 as a reference. It was published in 2001, before 186-3 and -4, and has not been superseded. After 140-3 spent 8 years in draft they recently decided to consider using ISO/IEC 19790 instead! 140-2 Annex A (Approved functions) is updated frequently and does now reference ...


1

This particular prime has been widely used in implementations of the Internet Key Exchange Protocol (IKE) and commonly referred to as Group 5. Group 5 has been in many devices for over a decade. Depending on your viewpoint this fact is either good or bad. It's good if you are implementing IKE and want to interoperate with other implementations of IKE. It ...



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