By the way, the general idea of One Hundred Year Security as far as digital signatures go would be to combine digital signature algorithms. Take one algorithm which is bog standard, such as ECDSA over NIST secp256r1 and another which has strong security properties and which is very different from ECDSA. Signing is simply generating a signature over the message using each algorithm in parallel. Signatures consist of both of the signatures of the two algorithms. Verifying consists of checking both signatures and rejecting if either one is wrong.
Since the digital signature algorithms that we've been discussing such as [1] are related to discrete log/Diffie-Hellman and since an efficient implementation would probably be in elliptic curves, then those are not great candidates to pair with ECDSA in this combiner scheme. Unfortunately I haven't stumbled on a digital signature scheme which has good properties (efficiency, simplicity, ease of implementation) and which is based on substantially different ideas and which isn't currently under patent protection (therefore excluding NTRUSign). Any ideas? [1] http://eprint.iacr.org/2007/019 Regards, Zooko --------------------------------------------------------------------- The Cryptography Mailing List Unsubscribe by sending "unsubscribe cryptography" to majord...@metzdowd.com