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Apr
5
comment For a one-time pad, which MAC method is information-theoretically secure?
@lightspeeder Note that all the attacks mentioned in that paper are based on real-world schemes where the key is reused for many messages. I suggested a one-time polynomial MAC's for which none of these attacks apply. Since you have already insisted on using a one-time pad for encryption, why not for the MAC as well?
Apr
4
comment For a one-time pad, which MAC method is information-theoretically secure?
Why do you insist on using HMAC as your authentication mechanism? And more importantly, do you really need to use a one-time pad? Anyway, if unconditional security is your goal for integrity, why not go with a one-time polynomial-based MAC?
Mar
31
comment Any field in a PKI certificate where some text info can be stored?
You are probably aware of this already, bu the nsComments extension is also deprecated according to the OpenSSL docs: "The following extensions are non standard, Netscape specific and largely obsolete. Their use in new applications is discouraged."
Mar
20
revised McEliece key size
Mixed up the distance d of the code with t = (d-1) / 2
Mar
20
answered McEliece key size
Mar
17
awarded  Yearling
Feb
2
comment The difference between these 4 breaking Cipher techniques?
[About CPA]: "this is the strongest type of attack possible". This is false. CCA is a stronger attack model than CPA. Furthermore, there exists attack models even stronger than CCA, for instance related-key models.
Jan
19
comment RSA cipher wrong use
Regarding applying unpadded RSA, that's already answered here: crypto.stackexchange.com/a/10155/1772
Jan
8
accepted Flaw in the security definition of Stateful Length-Hiding Authenticated Encryption (sLHAE)?
Jan
7
answered Flaw in the security definition of Stateful Length-Hiding Authenticated Encryption (sLHAE)?
Nov
27
answered Why does WPA2-PSK use 4-way handshake instead of 2-way handshake
Nov
24
revised Flaw in the security definition of Stateful Length-Hiding Authenticated Encryption (sLHAE)?
added 29 characters in body
Nov
24
asked Flaw in the security definition of Stateful Length-Hiding Authenticated Encryption (sLHAE)?
Oct
30
revised Can you help me understand this strange implication direction in security reduction for OAEP 3-round?
edited title
Oct
30
asked Can you help me understand this strange implication direction in security reduction for OAEP 3-round?
Sep
30
answered how to mathematically prove a key exchange algorithm
Sep
10
comment Question about Fermat's little theorem
@Alex For the left-to-right implication in the first equivalence to hold true, you should probably add that $p \nmid a$.
Sep
4
revised RSA PCKS1 v2.1 RSAES-OAEP algorithm
added 1 characters in body
Sep
4
revised RSA PCKS1 v2.1 RSAES-OAEP algorithm
added 1 characters in body
Sep
3
revised RSA PCKS1 v2.1 RSAES-OAEP algorithm
added 128 characters in body