Remi ☁️ (remigai)

To clarify, the decryption is handled by MPC instead of a single entity. So you need a threshold (n of m) of MPC participants to collude to decrypt. Regarding the system breaking down, this is true for any MPC - if enough nodes go down or lose their key shares, then you won’t be able to decrypt anymore.

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So it’s important to design around worst case (backup, key resharing as soon as a node loses its key or leaves the network, etc.). TEEs can also be used to further enhance security - basically bank grade security

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Yes you will need to do a decryption or reencryption to check whether a zero transfer has occurred. Failing/reverting a tx could leak information about the underlying ciphertext. However, there are ways to improve the user experience (separate reencryption logging service or re-introduce commitment based viewing key).

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recast:farcaster://casts/0xbe34aeebe42f2041bfbf6ecde6d54fc86305cd39a147d8b319a089750d68c62e

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