Class ConstantChaumPedersenProofKnownNonce

Proof that the ciphertext is a given constant.

Hierarchy

ConstantChaumPedersenProofKnownNonce

Index

Constructors

constructor

Properties

Methods

Constructors

constructor

new ConstantChaumPedersenProofKnownNonce(proof: ExpandedGenericChaumPedersenProof, constant: number): ConstantChaumPedersenProofKnownNonce

- Defined in core/chaum-pedersen.ts:21
Parameters
- proof: ExpandedGenericChaumPedersenProof
- constant: number
Returns ConstantChaumPedersenProofKnownNonce

Properties

Readonly constant

constant: number

Readonly proof

proof: ExpandedGenericChaumPedersenProof

Readonly usage

usage: string

Methods

equals

equals(other: ConstantChaumPedersenProofKnownNonce): boolean

- Defined in core/chaum-pedersen.ts:123
Parameters
- other: ConstantChaumPedersenProofKnownNonce
Returns boolean

isValid

isValid(ciphertext: ElGamalCiphertext, publicKey: ElGamalPublicKey | ElGamalKeypair, qbar: ElementModQ, expectedConstant?: number): boolean

- Defined in core/chaum-pedersen.ts:90
Validates a proof against an ElGamal ciphertext.

Parameters
- ciphertext: ElGamalCiphertext
  
  An ElGamal ciphertext
- publicKey: ElGamalPublicKey | ElGamalKeypair
  
  The public key of the election
- qbar: ElementModQ
  
  The election extended base hash (Q')
- expectedConstant: number = -1
  
  Optional parameter. If specified, the constant in the proof is validated against the expected constant.
Returns boolean
true if the proof is valid

Static create

create(ciphertext: ElGamalCiphertext, plaintext: number, nonce: ElementModQ, publicKey: ElGamalPublicKey | ElGamalKeypair, seed: ElementModQ, qbar: ElementModQ): ConstantChaumPedersenProofKnownNonce

- Defined in core/chaum-pedersen.ts:38
Produces a proof that a given ElGamal encryption corresponds to a specific total value. This requires the prover to know the nonce (the r behind the g^r).

Parameters
- ciphertext: ElGamalCiphertext
- plaintext: number
  
  The total allowed votes (L in the spec)
- nonce: ElementModQ
  
  The aggregate nonce used creating the ElGamal ciphertext (r in the spec)
- publicKey: ElGamalPublicKey | ElGamalKeypair
  
  The ElGamal public key for the election
- seed: ElementModQ
  
  Used to generate other random values here
- qbar: ElementModQ
  
  The election extended base hash (Q')
Returns ConstantChaumPedersenProofKnownNonce

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