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SHA-1 broken

2005-02-16 23:51:16

While this attack reduces SHA-1 from strength 2^80 to 2^69 and 2^69 
operations is still unreachably much, likelihood seems high that someone 
will improve this attack once the paper has been released.

Should we phase out SHA-1? But in favour of what?

This also means that DSA/DSS is broken (a downgrade attack becomes 
possible). Should we return to suggesting RSA as signature algorithm?


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