46 lines
1.2 KiB
TypeScript
46 lines
1.2 KiB
TypeScript
import CryptoJS from 'crypto-js'
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import { getKey } from './KeysHelper'
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export async function encrypt (
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plainText: string,
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key?: string
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): Promise<string> {
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if (!key) key = await getKey(1)
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const iv = CryptoJS.lib.WordArray.random(16)
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const encrypted = CryptoJS.AES.encrypt(
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plainText,
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CryptoJS.enc.Utf8.parse(key),
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{
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iv,
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mode: CryptoJS.mode.CBC,
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padding: CryptoJS.pad.Pkcs7
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}
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)
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const combined = iv.concat(encrypted.ciphertext)
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return CryptoJS.enc.Base64.stringify(combined)
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}
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export async function decrypt (dataB64: string, key?: string): Promise<string> {
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if (!key) key = await getKey(0)
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const data = CryptoJS.enc.Base64.parse(dataB64)
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const iv = CryptoJS.lib.WordArray.create(data.words.slice(0, 4), 16)
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const ciphertext = CryptoJS.lib.WordArray.create(
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data.words.slice(4),
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data.sigBytes - 16
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)
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const cipherParams = CryptoJS.lib.CipherParams.create({ ciphertext })
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const decrypted = CryptoJS.AES.decrypt(
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cipherParams,
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CryptoJS.enc.Utf8.parse(key),
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{
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iv,
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mode: CryptoJS.mode.CBC,
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padding: CryptoJS.pad.Pkcs7
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}
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)
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const result = decrypted.toString(CryptoJS.enc.Utf8)
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if (!result) throw new Error(await encrypt('-997'))
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return result
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}
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