Re: [DNSOP] SHA-1 chosen prefix collisions and DNSSEC

2020-01-10 Thread Tony Finch
Tony Finch wrote: > I have written a blog post with my understanding of the implications of > the SHAmbles attack for DNSSEC. > > https://www.dns.cam.ac.uk/news/2020-01-09-sha-mbles.html I've updated that with a correction about the SHA-1 input block size, but that doesn't affect the overall

[DNSOP] SHA-1 chosen prefix collisions and DNSSEC

2020-01-09 Thread Tony Finch
I have written a blog post with my understanding of the implications of the SHAmbles attack for DNSSEC. https://www.dns.cam.ac.uk/news/2020-01-09-sha-mbles.html Conclusions from the article: Whenever a DNS zone is signed with a SHA-1 DNSKEY algorithm it is vulnerable to chosen prefix