i still don't get why people use elliptic curves instead of diffie-hellman since you can use it for public keys too. the index calculus cryptanalytic method appears to apply for the usage of F_q where q = pn for some prime p. it appears that if q is a large prime and q - 1 is divisible by a large prime, that covers the two biggest error cases
15
Replies
4
Boosts
This comment is unavailable — it may have been deleted or is not visible to you.
This comment is unavailable — it may have been deleted or is not visible to you.
This comment is unavailable — it may have been deleted or is not visible to you.
This comment is unavailable — it may have been deleted or is not visible to you.
This comment is unavailable — it may have been deleted or is not visible to you.
This comment is unavailable — it may have been deleted or is not visible to you.
This comment is unavailable — it may have been deleted or is not visible to you.
This comment is unavailable — it may have been deleted or is not visible to you.
This comment is unavailable — it may have been deleted or is not visible to you.
This comment is unavailable — it may have been deleted or is not visible to you.
This comment is unavailable — it may have been deleted or is not visible to you.
This comment is unavailable — it may have been deleted or is not visible to you.
https://en.wikipedia.org/wiki/Advanced_Encryption_Standard a paper in 2015 has space complexity of cracking AES-128 down to 9 exabytes
https://en.wikipedia.org/wiki/Exascale_computing
On 29 July 2015, Barack Obama signed an executive order creating a National Strategic Computing Initiative calling for the accelerated development of an exascale system and funding research into post-semiconductor computing.[32]
This attack requires the attacker to be able to run programs on the same system or platform that is performing AES.
the way they dance around the subject of how "side channels" work while glazing up known evil bad guys like djb and shamir is crazy. it's not about "running programs" on the same system, but those programs being able to trigger cryptographic operations in response to uncontrolled input
it's so crazy that AES and block ciphers more generally don't mix up ciphertext across blocks??????
i'm pretty sure that's correct????
ChaCha is the basis of the BLAKE hash function, a finalist in the NIST hash function competition, and its faster successors BLAKE2 and BLAKE3.
finally this all makes sense to me
learning about checksums. i don't like em
MD5 was designed by Ronald Rivest in 1991
does this guy literally do anything other than backdoors
There is a long list of cryptographic hash functions but many have been found to be vulnerable and should not be used.
i'm fucking amazed nobody has ever brought up the idea that checksums might be different for the purpose of integrity checking vs cryptographic signatures
Richard Hamming, the inventor of Hamming codes,
sure buddy
there's a kind of BE NOT AFRAID response i get when considering how to provide checksum trees for a whole file and then all the way up the directory hierarchy.
like you need to have parity data not just for your data but also for your parity data. so you're constructing a parity tree for your parity tree recursively
omg usenet again has the innovations in information theory https://en.wikipedia.org/wiki/Parchive
this is the sickest shit ever!!!!!
An incremental backup only makes sense when the new set of input files has a lot of overlap with the previous set of input files.
