cfrg / draft-irtf-cfrg-blind-signatures

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citing Marvin attack? #214

Open armfazh opened 1 year ago

armfazh commented 1 year ago

It's probably worth citing Marvin attack in Section Alternative RSA Encoding Functions

According to [RFC8017], "Although no attacks are known against RSASSA-PKCS#1 v1.5, in the interest of increased robustness, RSA-PSS [RFC8017] is recommended for eventual adoption in new applications."

FredericJacobs commented 1 year ago

Hi @armfazh, Thanks for opening this issue. I wonder what our options are now that we have an RFC. I think we would need to go through the whole process to get an errata issued.

@chris-wood : What do you think? Our last revision precedes the public disclosure of this vulnerability but I don't know what our options are to address this.

chris-wood commented 1 year ago

The only option is errata at this point. That said, doesn't the attack only apply to PKCS#1 v1.5? What would be the reason for citing it in this document?

jedisct1 commented 1 year ago

Because we are quoting RFC8017: "Although no attacks are known against RSASSA-PKCS#1 v1.5" [RSA-PSS is recommended]

chris-wood commented 1 year ago

Oh, hah, I see 🤦 an errata is the best way forward then!