Can create a cert with no serial number?

[Michael Wojcik]

> From: openssl-users <openssl-users-bounces at openssl.org> On Behalf Of Job Cacka
> Sent: Thursday, 1 June, 2023 09:01

> Intentionally repeating characters in a hash is a great way to provide the hash to be broken.

"great" here is a rather bold claim.

If repeating a few characters in the Subject DN makes any appreciable difference in the work factor for a second-preimage attack on your certificate signatures, you have much bigger problems.

> As I recall there is something about repeating a character more than 3 times consecutively
> that decreases the effectiveness of the hash.

Citation needed.

-- 
Michael Wojcik