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Oct
9
accepted What is the sign bit for in Feige-Fiat-Shamir?
Oct
1
comment finding collision for truncated SHA1 hash output
@CodesInChaos Thanks, fixed. I had to hand-repair several lines when I pasted into this post but I missed those. Not sure why crypto.SE is behaving this way suddenly (normally it preserves indentation for me).
Oct
1
revised finding collision for truncated SHA1 hash output
indentation
Oct
1
answered finding collision for truncated SHA1 hash output
Sep
22
comment Best way to reduce chance of hash collisions: Multiple hashes, or larger hash?
Thomas: you switched from SHA-256 in your answer to MD5 at the end. As you know, these are two different animals (neither animal, being a gorilla) since MD5 outputs only 128 bits and it has known collisions. Finding a collision by brute force (a suddenly very apt term in the present context) for a 128 bit hash is going to take "only" $2^{64}$ expected trials, making it roughly on par with gorilla attacks.
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asked How can I create an RSA modulus for which no one knows the factors?
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Sep
10
comment What NIST protocol was allegedly backdoored by NSA in 2006?
It wouldn't be the first time the media got something wrong; even the NYT makes technical mistakes occasionally. More likely, there is a wrong perception among researchers about the history of SP 800-90.
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10
accepted What NIST protocol was allegedly backdoored by NSA in 2006?
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8
reviewed Reject What NIST protocol was allegedly backdoored by NSA in 2006?
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8
asked What NIST protocol was allegedly backdoored by NSA in 2006?