Mastodawn

I just sent a file that no longer exists.

Not deleted after 7 days. Not stored on a server waiting to be breached. Gone — the moment the receiver clicked the link.

Today I'm launching ParaShare by PARAMANT — free for everyone, no account needed to receive.

#postquantum

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Mick Beer 8h ago

How it works:
→ Drop a file at paramant.app homepage
→ Get a one-time link
→ Receiver clicks once — file is permanently destroyed
→ Second request returns 404. No copy exists anywhere.

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Bas Zoetekouw 8h ago

@Mickbeer sounds like a useful sevice, but also like one that has nothing to do with "quantum" (apart from using post-quantum encryption, presumably?).
You still have to take care of the key (well, one time link) distribution yourself, if someone else gets the link they can still retrieve the file, and if your infrastructure is compromised the data can still leak.

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Mick Beer

@baszoetekouw You’re right on all three points — and that’s intentional.

“Post-quantum” refers specifically to the key encapsulation: ML-KEM-768 (NIST FIPS 203), meaning the encryption is safe against quantum computers harvesting traffic today to decrypt later. That’s the threat model we’re solving for regulated industries, not consumer convenience.