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SHA-1 is on the way to deprecation, in particular for digital certification (x509). But I can't find ressources about SHA-1 deprecation from SSL/TLS Cipher Suites.
Is it implicit, as deprecation implies that SHA-1 usage will be deprecated in all cases ? Or is there a different strategy concerning SHA-1 usage in Cipher suite ?
I also don't understand how attackers could forge SHA1 certificate signature, as the hash is still "protected" by the signature (CA private key). So forging the hash with collisions, ok, but one would detect that hash is not trusted anymore (signature wouldn't be the same). I miss something ?