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30m
awarded  Proofreader
33m
reviewed Approve suggested edit on Verify signed file using GPG by passing in signature hosted online rather than stored locally (i.e. in keyring)?
34m
reviewed Close Verify signed file using GPG by passing in signature hosted online rather than stored locally (i.e. in keyring)?
20h
reviewed No Action Needed ZIP 2.0 encryption bruteforce attack
22h
revised Security of chameleon hash functions
added 192 characters in body
22h
answered Security of chameleon hash functions
2d
reviewed Close Learnable with oracle query
Oct
17
comment Existential Unforgeability of signature scheme against Adaptive Chosen Message Attack
@Holmes.Sherlock Some time ago I have written up this anwer which may also be of interest to you in this context.
Oct
17
reviewed No Action Needed Cryptography system that limits the length of the encypted message
Oct
17
comment initiate the elliptic curve
I am not really familiar with this library, but the latter initializes your curve and the former initializes a specific scalar multiplier (Comb multiplier) which requires precomputation. But there should be other multipliers available. So the second init is required but the first only if you want to use the Comb multiplier.
Oct
17
comment Elliptic curve parameters
I'd suggest to remove this edit from this question and put it into a new one. Otherwise the answers to your initial question would make the impression that they are incomplete (bad), but they are actually perfectly valid answers to your original question.
Oct
17
comment Existential Unforgeability of signature scheme against Adaptive Chosen Message Attack
@Ricky Demer Yes, but strong EUF-CMA in contrast to EUF-CMA is quite specific (or not that meaningful in general). It rules out EUF-CMA secure schemes that have important properties such as randomization of signatures. Such schemes are trivially insecure in this model. But the notion can still be meaningful in some particular scenarios.
Oct
17
comment Elliptic curve parameters
Please do not merge a new question in your old question that already received answers. Just open a new one.
Oct
17
comment Existential Unforgeability of signature scheme against Adaptive Chosen Message Attack
This is the standard security property for secure digital signatures and you will find it in any modern textbook (e.g., Katz & Lindell). It has been introduced here and we will not do the googling for you ;)
Oct
16
reviewed No Action Needed Chess Grandmaster Problem and “Valid” Attacks on Zero-Knowledge Proofs of Identity
Oct
16
comment Does the following linear equation hold in bilinear pairings:
@curious. Then, only with negligible probability (meaning in practice NO).
Oct
16
reviewed Close How would I write my own asymmetric encryption algorithm (not RSA, DES etc)?
Oct
16
answered Does the following linear equation hold in bilinear pairings:
Oct
16
reviewed No Action Needed Is it just as difficult to find a desired output in a hash digest, for MSB vs LSB?
Oct
16
reviewed No Action Needed Cryptography system that limits the length of the encypted message