João Lucas de Oliveira Lopes
421ca2eb92
* refactor(types): Strengthen Type Safety in Signal Handling & Core Utilities * chore: revert typescript and move types to libsignal * chore: update libsignal dependency resolution and checksum * fix: a minor regression * chore: update libsignal resolution and checksum
37 lines
898 B
TypeScript
37 lines
898 B
TypeScript
import { deriveSecrets } from 'libsignal/src/crypto'
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export class SenderMessageKey {
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private readonly iteration: number
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private readonly iv: Uint8Array
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private readonly cipherKey: Uint8Array
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private readonly seed: Uint8Array
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constructor(iteration: number, seed: Uint8Array) {
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const derivative = deriveSecrets(seed, Buffer.alloc(32), Buffer.from('WhisperGroup'))
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const keys = new Uint8Array(32)
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keys.set(new Uint8Array(derivative[0].slice(16)))
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keys.set(new Uint8Array(derivative[1].slice(0, 16)), 16)
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this.iv = Buffer.from(derivative[0].slice(0, 16))
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this.cipherKey = Buffer.from(keys.buffer)
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this.iteration = iteration
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this.seed = seed
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}
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public getIteration(): number {
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return this.iteration
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}
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public getIv(): Uint8Array {
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return this.iv
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}
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public getCipherKey(): Uint8Array {
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return this.cipherKey
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}
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public getSeed(): Uint8Array {
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return this.seed
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}
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}
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