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e-sushi

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earned this badge 21 times.

Does it make sense to block RSA keys under 1024 bits?

Awarded Dec 14, 2021 at 15:41

Security difference(s) between Shamir's Secret Sharing Scheme and Blakley's Secret Sharing Scheme?

Awarded Jul 9, 2021 at 20:25

What criteria make the theta step of Keccak's round function reversible?

Awarded May 10, 2021 at 15:42

Effective security of block cipher – equal the key size, or half the key size?

Awarded Feb 10, 2020 at 2:25

Security issues of a MAC-then-Encrypt-then-MAC approach?

Awarded Feb 5, 2020 at 3:35

Can we ensure the security of a crypto-algorithm and -implementaton against acoustic cryptanalysis?

Awarded May 12, 2019 at 23:15

When is an RNG a CSPRNG, a CSRNG, or a TRNG?

Awarded Feb 17, 2019 at 4:30

What are the potential security impacts of using CRAM-MD5 for Emails, when not using an SSL connection?

Awarded Dec 26, 2018 at 14:35

Should the identity of a sender be verified using additional means, or does a MAC suffice?

Awarded Oct 12, 2018 at 21:10

Is the software that uses PGP broken, or is it PGP itself?

Awarded May 15, 2018 at 2:19

What was NIST’s reason to switch naming from MD… (Message Digest) to SHA… (Secure Hashing Algorithm)?

Awarded Mar 15, 2018 at 10:20

Are there any (asymmetric) cryptographic primitives not relying on arithmetic over prime fields and/or finite fields?

Awarded Dec 28, 2017 at 15:27

Did NIST verify “post-quantum” claims in the SHA3 proposal papers?

Awarded Nov 15, 2017 at 22:36

Is the first version of the Message-Digest algorithm by Ronald Rivest publically available?

Awarded Apr 30, 2017 at 19:52

Is it possible to actually verify a “sponge function” security claim?

Awarded Mar 27, 2017 at 19:13

What does a "real" quantum computer need for cryptanalysis and/or cryptographic attack purposes?

Awarded Mar 8, 2017 at 8:06

Proof for the SHA3 claim that 256 bit security is "post-quantum sufficient"?

Awarded Jun 20, 2016 at 7:40

When NIST disallows the use of 1024-bit keys, what effect will that have on SHA-3 (with max. 512 bits)?

Awarded Oct 28, 2014 at 19:54

How exactly is "true randomness" defined in the realms of cryptography?

Awarded Jun 26, 2014 at 14:48

What stops the Multiply-With-Carry RNG from being a Cryptographically Secure PRNG?

Awarded Jun 1, 2014 at 7:04

NIST temporarily closed — will that have a negative impact on the future of cryptography?

Awarded Feb 23, 2014 at 12:44

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