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16 lines
745 B
Markdown
16 lines
745 B
Markdown
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# Distributed Key Generation
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Serai uses a modification of Pedersen's Distributed Key Generation, which is
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actually Feldman's Verifiable Secret Sharing Scheme run by every participant, as
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described in the FROST paper. The modification included in FROST was to include
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a Schnorr Proof of Knowledge for coefficient zero, preventing rogue key attacks.
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This results in a two-round protocol.
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### Encryption
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In order to protect the secret shares during communication, the `dkg` library
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additionally sends an encryption key. These encryption keys are used in an ECDH
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to derive a shared key. This key is then hashed to obtain two keys and IVs, one
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for sending and one for receiving, with the given counterparty. Chacha20 is used
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as the stream cipher.
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