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Perfect Forward Secrecy? Diffie-Hellman Ephemeral Key Exchange? #8

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thecyberd3m0n opened this issue Jan 25, 2020 · 2 comments
Open

Perfect Forward Secrecy? Diffie-Hellman Ephemeral Key Exchange? #8

thecyberd3m0n opened this issue Jan 25, 2020 · 2 comments

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@thecyberd3m0n
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thecyberd3m0n commented Jan 25, 2020 •
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I'm new to crypto, but if I understand as well - apps like Signal never uses same keypair to encrypt more than one message. Could this be achieved by web-crypto implementation? Could you help me with "upgrading" your solution? Also - is it safe for Forward Secrecy to consider user's password (from account) as base for keypair?

I'm trying to re-engineer your app into web-based Signal-like solution. Please help me
@thecyberd3m0n thecyberd3m0n changed the title Perfect Forward Secrecy? Perfect Forward Secrecy? Diffie-Hellman Ephemeral Key Exchange? Jan 25, 2020
@rmhrisk
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rmhrisk commented Jan 26, 2020

Here is a webcrypto based implementation of a double ratchet protocol https://github.com/PeculiarVentures/2key-ratchet

@thecyberd3m0n
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Thank you a lot

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@rmhrisk @thecyberd3m0n