Class HashedElGamalCiphertext

The ciphertext representation of an arbitrary byte-array, encrypted with an ElGamal public key.

Hierarchy

HashedElGamalCiphertext

Index

Constructors

constructor

Properties

Methods

Constructors

constructor

new HashedElGamalCiphertext(c0: ElementModP, c1: Uint8Array, c2: UInt256, numBytes: number): HashedElGamalCiphertext

- Defined in core/hashed-elgamal.ts:28
Parameters
- c0: ElementModP
- c1: Uint8Array
- c2: UInt256
- numBytes: number
Returns HashedElGamalCiphertext

Properties

Readonly c0

c0: ElementModP

Readonly c1

c1: Uint8Array

Readonly c2

Readonly numBytes

numBytes: number

Methods

decrypt

decrypt(secretKey: ElGamalSecretKey | ElGamalKeypair, suppressWarnings?: boolean): undefined | Uint8Array

- Defined in core/hashed-elgamal.ts:39
Attempts to decrypt the ciphertext using the given secret key. Returns undefined if the decryption fails, likely from an HMAC verification failure.

Parameters
- secretKey: ElGamalSecretKey | ElGamalKeypair
- suppressWarnings: boolean = false
Returns undefined | Uint8Array

equals

equals(other: HashedElGamalCiphertext): boolean

- Defined in core/hashed-elgamal.ts:133
Parameters
- other: HashedElGamalCiphertext
Returns boolean

Static encrypt

encrypt(key: ElGamalPublicKey | ElGamalKeypair, input: Uint8Array, nonce?: undefined | ElementModQ): HashedElGamalCiphertext

- Defined in core/hashed-elgamal.ts:90
Given an array of plaintext bytes, encrypts those bytes using the "hashed ElGamal" stream cipher, described in the ElectionGuard specification, in section 3. The nonce may be specified to make the encryption deterministic. Otherwise, it's selected at random.

Parameters
- key: ElGamalPublicKey | ElGamalKeypair
- input: Uint8Array
- nonce: undefined | ElementModQ = undefined
Returns HashedElGamalCiphertext

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