* Jason Ross:

> To partially answer the first question anyway, a very quick and
> likely imprecise check of my Debian default installation of openssl
> contains the following 24 CA certs as using "md5WithRSAEncryption"
> for the Signature Algorithm:

These are self-signatures and typically not checked.  When these
certificates are used as issuers, they can use SHA-1, and are not
restricted to MD5.  (Same comment applies to the certificates with MD2
self-signatures.)

Only the CA knows if they still issue certificates with MD5
signatures.
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