[Cryptography] 1023 nails in the coffin of 1024 RSA...

Hanno Böck hanno at hboeck.de
Sat Oct 4 15:50:51 EDT 2014

Am Sat, 04 Oct 2014 12:08:42 -0700
schrieb ianG <iang at iang.org>:

> (some skepticism about whether this there is really a break in
> OpenSSL, but the rumour mill will no doubt throw mud on the 1024 bit
> part as well...)

I saw this earlier and got curious, but this doesn't make sense from
start to end.

I personally tried if openssl will for whatever reason round 1025/2
down to 513 by inserting a printf at that point for bitsp and bitsq. It

Even if it would it is not clear how N as a product of a 511 and a 513
bit prime should pose any significant risk.

That said: There are good reasons to get rid of 1024 bit rsa. This is
not one of them. It's a very vague rumor with an implausible story.
However it certainly doesn't hurt if a few people look at the supposed
source code and see if there's anything suspicious.

Hanno Böck

mail/jabber: hanno at hboeck.de
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