[cabfpub] Mozilla SHA-1 further restrictions (v4)

Tim Shirley TShirley at trustwave.com
Thu Jan 12 12:34:36 MST 2017


>    CAs may only sign SHA-1 hashes over issuing intermediates which chain
>    up to roots in Mozilla's program if the certificate to be signed is a
>    duplicate of an existing SHA-1 intermediate certificate with the only
>    change being the addition of an EKU to meet the requirements outlined above.

Besides EKU, I presume this should also list adding the pathlen:0 constraint if it was previously absent.  It would probably be good to include serial number as well, so no one could interpret this as a requirement to duplicate a serial number.







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