How long X3/X4 intermediate will used?

Issuance Policy
1

How long X3/X4 intermediate will used?

  1. 2020/12/18 when identrust cross sign expires - 90 days (leaf cert lifetime)
  2. 2021/7/9 when ISRG signed intermediate expires -90 days

will there any period of x3 is used but cross sign is not vaild?

and X5 intermediate won’t be cross signed to anything, right?

2

Hi,

According to Chain of Trust page, X4 will not be in use except there’s something wrong with the current X3 certificate, as it’s for disaster recovery purposes.
Currently, I (personal me) am not sure whether Let’s Encrypt will renew the cross-signed certificate after the IdenTrust crosssign expries… But from what we have now, there’ll be 203 days where X3 is valid but the cross-sign is expired.

Pinging @lestaff in case we need it.

Thank you

3

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