{"version":3,"file":"index.cjs","sources":["../../../../../../../../src/mods/kdbx/headers/inner/cipher/index.ts"],"sourcesContent":["import { ChaCha20Poly1305 } from \"@hazae41/chacha20poly1305\"\nimport { Cursor } from \"@hazae41/cursor\"\n\nexport type Cipher =\n | typeof Cipher.ArcFourVariant\n | typeof Cipher.Salsa20\n | typeof Cipher.ChaCha20\n\nexport namespace Cipher {\n\n export class ArcFourVariant {\n constructor() { }\n }\n\n export namespace ArcFourVariant {\n\n export const type = 0x01\n\n export function cloneOrThrow() {\n return ArcFourVariant\n }\n\n export function sizeOrThrow() {\n return 4\n }\n\n export function writeOrThrow(cursor: Cursor) {\n cursor.writeUint32OrThrow(type, true)\n }\n\n export async function initOrThrow(seed: Uint8Array): Promise {\n throw new Error(\"ArcFourVariant is not implemented yet\")\n }\n\n }\n\n export class Salsa20 {\n constructor(\n readonly key: Uint8Array,\n readonly nonce: Uint8Array,\n ) { }\n }\n\n export namespace Salsa20 {\n\n export const type = 0x02\n\n export function cloneOrThrow() {\n return Salsa20\n }\n\n export function sizeOrThrow() {\n return 4\n }\n\n export function writeOrThrow(cursor: Cursor) {\n cursor.writeUint32OrThrow(type, true)\n }\n\n export async function initOrThrow(seed: Uint8Array): Promise {\n throw new Error(\"Salsa20 is not implemented yet\")\n }\n\n }\n\n export class ChaCha20 {\n\n constructor(\n readonly cipher: ChaCha20Poly1305.Abstract.ChaCha20Cipher,\n ) { }\n\n [Symbol.dispose]() {\n this.cipher[Symbol.dispose]()\n }\n\n applyOrThrow(data: Uint8Array) {\n const { Memory } = ChaCha20Poly1305.get().getOrThrow()\n\n const memory = Memory.importOrThrow(data)\n\n this.cipher.applyOrThrow(memory)\n\n return memory\n }\n\n }\n\n export namespace ChaCha20 {\n\n export const type = 0x03\n\n export function cloneOrThrow() {\n return ChaCha20\n }\n\n export function sizeOrThrow() {\n return 4\n }\n\n export function writeOrThrow(cursor: Cursor) {\n cursor.writeUint32OrThrow(type, true)\n }\n\n export async function initOrThrow(seed: Uint8Array): Promise {\n const { Memory, ChaCha20Cipher } = ChaCha20Poly1305.get().getOrThrow()\n\n const hashed = new Uint8Array(await crypto.subtle.digest(\"SHA-512\", seed))\n const cursor = new Cursor(hashed)\n\n using key = Memory.importOrThrow(cursor.readOrThrow(32))\n using nonce = Memory.importOrThrow(cursor.readOrThrow(12))\n\n const cipher = ChaCha20Cipher.importOrThrow(key, nonce)\n\n return new ChaCha20(cipher)\n }\n\n }\n\n}\n\nexport namespace Cipher {\n\n export function readOrThrow(cursor: Cursor) {\n const value = cursor.readUint32OrThrow(true)\n\n if (value === Cipher.ArcFourVariant.type)\n return Cipher.ArcFourVariant\n if (value === Cipher.Salsa20.type)\n return Cipher.Salsa20\n if (value === Cipher.ChaCha20.type)\n return Cipher.ChaCha20\n\n throw new Error()\n 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