Need to keep the session alive during the padding attack, which the user might notice. Instead, use JS in the background to repeatedly reopen connections in the background, instead of reloading the full webpage which the user may notice.
#realworldcrypto
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decentralization
for your decentralized smart contracts thing on a blockchain
#realworldcryptopic.twitter.com/W8GvvB9CTX
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Possible solutions: - change TLS to sign data - trusted hardware (SGX*) * welp
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DECO facilitates privacy-preserving proofs about TLS data to oracles and can be used for these smart contracts
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The primary goal is to prove provenance of TLS ciphertext.
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The three-party handshake logo is cut off, my apologies
#realworldcryptopic.twitter.com/0GjRpeSjBh
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(That
operation is an elliptic curve group operation)
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Results in a handshake circuit with AND complexity of ~770k, runs in ~1.40seconds on wired network. Plenty fast for DECO.
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So, if this is a proof based on the TLS connection of the data provider, what happens when the data provider gets social engineered or forgets to patch their database backend?
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Q: In the MPC it's broken into two parts, what prevents a malicious input in the second part? A: This will be caught later on in the protocol in the proof stage this will be caught, the two parties commit to their shares beforehand
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Next up is the first symmetric crypto session, starting with Attacks only get better: The case of OCB2 by Tetsu Iwata
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No authenticity, allowing the ciphertext to be manipulated.
#REALWORLDCRYPTOpic.twitter.com/XwbeF4CX1L
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Nonce changes for every* encryption operation *except when it doesn't , like when you ask the user to provide a nonce
#REALWORLDCRYPTOpic.twitter.com/twmxJ4qxUj
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GCM, CCM are NIST-certified IETF ones include GCM, ChaCha20-Poly1305 CAESAR includes 6 more Some more in the ongoing NIST lightweight crypto competition
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OCB includes 3 versions, nonce-based AE with AD with strong features, including proof of security
#realworldcryptopic.twitter.com/hZ9D7HyKXF
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Result: authenticity attack on OCB2, not related to the underlying block cipher.
#realworldcryptopic.twitter.com/nRbwCXsRyi
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> SJCL affected Free corgi pix to someone who collects metrics on real world usage of the SJCL in the wild.
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If we encrypt the same message twice, the nonce will* be different and the ciphertext will be different. * CAVEAT EMPTOR
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- Još 172 druga odgovora
Novi razgovor -
Čini se da učitavanje traje već neko vrijeme.
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crypto as in 'cryptography'
