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Aug
17
comment Are there cryptographic hash functions that can be computed using only paper and pen without leaking any information about the plaintext?
Aha, I understand. Might be worth incorporating that into the question - I interpreted the read only random access store as a piece of paper with the message on. If you have an example usage scenario in mind that would be interesting.
Aug
17
comment Are there cryptographic hash functions that can be computed using only paper and pen without leaking any information about the plaintext?
Can you expand on why you have your side channel constraint? It doesn't seem to fit in with my model of what you're trying to achieve. The original (sensitive) information is on paper with the user. Why can they not create additional sensitive information and then either destroy it or leave it along with the original?
Aug
16
reviewed Leave Open Voting scheme where the votes become public when a threshold is reached
Aug
16
reviewed Leave Open What security flaw exists in MAC authentication scenario?
Aug
16
awarded  Self-Learner
Aug
14
comment Pre-image resistant but not 2nd pre-image resistant?
Thanks for the info and good explanations and also the pointer to the hash function lounge - see my answer for what came of it.
Aug
14
answered Pre-image resistant but not 2nd pre-image resistant?
Aug
11
asked Pre-image resistant but not 2nd pre-image resistant?
Aug
6
reviewed Leave Open Quantum resistance of Lamport signatures
Aug
3
awarded  Custodian
Aug
3
reviewed No Action Needed Achieving 256-bit encryption strength with PBKDF2 - HMAC-SHA1
Aug
3
revised AES-SIV security
change rfc as per comment
Aug
3
reviewed Leave Open AES-SIV security
Aug
3
suggested approved edit on AES-SIV security
Aug
3
awarded  Custodian
Aug
3
reviewed Leave Open Different patterns of different paterns, wildcard
Aug
3
reviewed Leave Open Recent attacks on RSA
Aug
2
comment Recent attacks on RSA
I was surprised after a quick search to not find any reference to their company selling EC products/solutions.
Jul
18
revised Physical analogue for MACs
Clarify intro and improve algorithm description.
Jul
17
comment Physical analogue for MACs
@stephen Fair point, it does take a bit of thinking about. I think it could work for any scientifically minded person with no knowledge of crypto. Just to clarify in case there's any doubt: I completely made all this up.