Class FrostDkgParticipantAbstract

Participant in the FROST DKG mentioned in Figure 1 of the paper https://eprint.iacr.org/2020/852.pdf Each participant has a unique integer id > 0 and ids form a contiguous set, i.e. no gaps. Protocol has 2 rounds and in each round each participant sends message to others

Hierarchy (view full)

Constructors

constructor

Properties

id protocolId publicKey? receivedFromInRound1Count? receivedFromInRound2? round1Msg? secretKey? shares? threshold thresholdPublicKey? total

Methods

finishRound1 finishRound1Func finishRound2 finishRound2Func generateThresholdPublicKeyFromPublicKeys hasFinishedRound1 hasFinishedRound2 hasStarted hasThresholdParticipatedInRound1 hasThresholdParticipatedInRound2 haveAllParticipatedInRound1 haveAllParticipatedInRound2 processReceivedMessageInRound1 processReceivedSharesInRound2 processRound1MsgFunc processRound2MsgFunc startRound1 startRound1Func thresholdPublicKeyFromPublicKeysFunc

Constructors

constructor

Properties

Readonlyid

id: number

Id of this participant

ReadonlyprotocolId

protocolId: Uint8Array

Id of this execution of the DKG. Use different ids in different protocol executions.

OptionalpublicKey

publicKey?: Uint8Array

The public key of the participant

OptionalreceivedFromInRound1Count

receivedFromInRound1Count?: number

Count of messages received from others in round 1

OptionalreceivedFromInRound2

receivedFromInRound2?: Set<number>

Sender ids who sent message in round 2

Optionalround1Msg

round1Msg?: Round1Msg

Message to be sent in round 1

OptionalsecretKey

secretKey?: Uint8Array

The secret key of the participant

Optionalshares

shares?: Share[]

Shares to be sent in round 2

Readonlythreshold

threshold: number

OptionalthresholdPublicKey

thresholdPublicKey?: Uint8Array

The threshold public key and all participants will have the same public key

Readonlytotal

total: number

Methods

finishRound1

Protected AbstractfinishRound1Func

  • finishRound1Func(): ((roundState: Uint8Array) => [Uint8Array, Uint8Array[]])

  • Returns ((roundState: Uint8Array) => [Uint8Array, Uint8Array[]])

      • (roundState): [Uint8Array, Uint8Array[]]

      • Parameters

        • roundState: Uint8Array

        Returns [Uint8Array, Uint8Array[]]

finishRound2

  • finishRound2(pkBase, unchecked?): [Uint8Array, Uint8Array, Uint8Array]

  • Returns the secret key, public key and the threshold key

    Parameters

    Returns [Uint8Array, Uint8Array, Uint8Array]

Protected AbstractfinishRound2Func

  • finishRound2Func(): ((roundState: Uint8Array, pkBase: Uint8Array) => [Uint8Array, Uint8Array, Uint8Array])

  • Returns ((roundState: Uint8Array, pkBase: Uint8Array) => [Uint8Array, Uint8Array, Uint8Array])

      • (roundState, pkBase): [Uint8Array, Uint8Array, Uint8Array]

      • Parameters

        • roundState: Uint8Array
        • pkBase: Uint8Array

        Returns [Uint8Array, Uint8Array, Uint8Array]

generateThresholdPublicKeyFromPublicKeys

hasFinishedRound1

hasFinishedRound2

hasStarted

hasThresholdParticipatedInRound1

  • hasThresholdParticipatedInRound1(): boolean

  • Returns boolean

hasThresholdParticipatedInRound2

  • hasThresholdParticipatedInRound2(): boolean

  • Returns boolean

haveAllParticipatedInRound1

  • haveAllParticipatedInRound1(): boolean

  • Returns boolean

haveAllParticipatedInRound2

  • haveAllParticipatedInRound2(): boolean

  • Returns boolean

processReceivedMessageInRound1

processReceivedSharesInRound2

Protected AbstractprocessRound1MsgFunc

  • processRound1MsgFunc(): ((roundState: Uint8Array, msg: Uint8Array, protocolId: Uint8Array, pkBase: Uint8Array) => Uint8Array)

  • Returns ((roundState: Uint8Array, msg: Uint8Array, protocolId: Uint8Array, pkBase: Uint8Array) => Uint8Array)

      • (roundState, msg, protocolId, pkBase): Uint8Array

      • Parameters

        • roundState: Uint8Array
        • msg: Uint8Array
        • protocolId: Uint8Array
        • pkBase: Uint8Array

        Returns Uint8Array

Protected AbstractprocessRound2MsgFunc

  • processRound2MsgFunc(): ((roundState: Uint8Array, senderId: number, share: Uint8Array, pkBase: Uint8Array) => Uint8Array)

  • Returns ((roundState: Uint8Array, senderId: number, share: Uint8Array, pkBase: Uint8Array) => Uint8Array)

      • (roundState, senderId, share, pkBase): Uint8Array

      • Parameters

        • roundState: Uint8Array
        • senderId: number
        • share: Uint8Array
        • pkBase: Uint8Array

        Returns Uint8Array

startRound1

Protected AbstractstartRound1Func

  • startRound1Func(): ((participantId: number, threshold: number, total: number, protocolId: Uint8Array, pkBase: Uint8Array) => [Uint8Array, Uint8Array])

  • Returns ((participantId: number, threshold: number, total: number, protocolId: Uint8Array, pkBase: Uint8Array) => [Uint8Array, Uint8Array])

      • (participantId, threshold, total, protocolId, pkBase): [Uint8Array, Uint8Array]

      • Parameters

        • participantId: number
        • threshold: number
        • total: number
        • protocolId: Uint8Array
        • pkBase: Uint8Array

        Returns [Uint8Array, Uint8Array]

Protected AbstractthresholdPublicKeyFromPublicKeysFunc

  • thresholdPublicKeyFromPublicKeysFunc(): ((pubkeys: [number, Uint8Array][], threshold: number) => Uint8Array)

  • Returns ((pubkeys: [number, Uint8Array][], threshold: number) => Uint8Array)

      • (pubkeys, threshold): Uint8Array

      • Parameters

        • pubkeys: [number, Uint8Array][]
        • threshold: number

        Returns Uint8Array

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