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Version: v2.x

Minimal Anti Collusion Infrastructure (MACI) v2.2.0 / PCommand

Class: PCommand

Notice​

Unencrypted data whose fields include the user's public key, vote etc. This represents a Vote command.

Constructors​

new PCommand()​

new PCommand(stateIndex, newPubKey, voteOptionIndex, newVoteWeight, nonce, pollId, salt): PCommand

Create a new PCommand

Parameters​

• stateIndex: bigint

the state index of the user

• newPubKey: PubKey

the new public key of the user

• voteOptionIndex: bigint

the index of the vote option

• newVoteWeight: bigint

the new vote weight of the user

• nonce: bigint

the nonce of the message

• pollId: bigint

the poll ID

• salt: bigint = ...

the salt of the message

Returns​

PCommand

Defined in​

commands/PCommand.ts:57

Properties​

newPubKey​

newPubKey: PubKey

Defined in​

commands/PCommand.ts:35

newVoteWeight​

newVoteWeight: bigint

Defined in​

commands/PCommand.ts:39

nonce​

nonce: bigint

Defined in​

commands/PCommand.ts:41

pollId​

pollId: bigint

Defined in​

commands/PCommand.ts:43

salt​

salt: bigint

Defined in​

commands/PCommand.ts:45

stateIndex​

stateIndex: bigint

Defined in​

commands/PCommand.ts:33

voteOptionIndex​

voteOptionIndex: bigint

Defined in​

commands/PCommand.ts:37

Methods​

asArray()​

asArray(): bigint[]

Returns​

bigint[]

bigint[] - the command as an array

Notice​

Returns this Command as an array. Note that 5 of the Command's fields are packed into a single 250-bit value. This allows Messages to be smaller and thereby save gas when the user publishes a message.

Defined in​

commands/PCommand.ts:103

asCircuitInputs()​

asCircuitInputs(): bigint[]

Returns​

bigint[]

Defined in​

commands/PCommand.ts:119

copy()​

copy<T>(): T

Create a deep clone of this PCommand

Type Parameters​

• T extends PCommand

Returns​

T

a copy of the PCommand

Defined in​

commands/PCommand.ts:86

encrypt()​

encrypt(signature, sharedKey): Message

Parameters​

• signature: Signature<SnarkBigNumber>

• sharedKey: EcdhSharedKey

Returns​

Message

Notice​

Encrypts this command along with a signature to produce a Message. To save gas, we can constrain the following values to 50 bits and pack them into a 250-bit value: 0. state index 3. vote option index 4. new vote weight 5. nonce 6. poll ID

Defined in​

commands/PCommand.ts:158

equals()​

equals(command): boolean

Parameters​

• command: PCommand

Returns​

boolean

Defined in​

commands/PCommand.ts:124

hash()​

hash(): bigint

Returns​

bigint

Defined in​

commands/PCommand.ts:133

sign()​

sign(privKey): Signature<SnarkBigNumber>

Parameters​

• privKey: PrivKey

Returns​

Signature<SnarkBigNumber>

Notice​

Signs this command and returns a Signature.

Defined in​

commands/PCommand.ts:138

toJSON()​

toJSON(): IJsonPCommand

Serialize into a JSON object

Returns​

IJsonPCommand

Defined in​

commands/PCommand.ts:224

verifySignature()​

verifySignature(signature, pubKey): boolean

Parameters​

• signature: Signature<SnarkBigNumber>

• pubKey: PubKey

Returns​

boolean

Notice​

Returns true if the given signature is a correct signature of this command and signed by the private key associated with the given public key.

Defined in​

commands/PCommand.ts:145

decrypt()​

static decrypt(message, sharedKey, force): IDecryptMessage

Decrypts a Message to produce a Command.

Parameters​

• message: Message

the message to decrypt

• sharedKey: EcdhSharedKey

the shared key to use for decryption

• force: boolean = false

whether to force decryption or not

Returns​

IDecryptMessage

Dev​

You can force decrypt the message by setting force to true. This is useful in case you don't want an invalid message to throw an error.

Defined in​

commands/PCommand.ts:178

fromJSON()​

static fromJSON(json): PCommand

Deserialize into a PCommand instance

Parameters​

• json: IJsonPCommand

Returns​

PCommand

a PCommand instance

Defined in​

commands/PCommand.ts:241