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class StringUtils { public static readonly charset: string = 'ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789' public static generateCharset = (privateKey: string, charset?: string): string => { let tempString = charset || StringUtils.charset let result = '' for (let i = 0; i < StringUtils.charset.length; i += 1) { const kIndex = i % privateKey.length const charCode = privateKey.charCodeAt(kIndex) const tIndex = charCode % tempString.length result = tempString[tIndex] + result tempString = tempString.substring(tIndex + 1) + tempString.substring(0, tIndex) } return result } public static randomId = (): string => { const now = new Date().getTime().toString(36) // l0u2ifgu - ... - ... - todo return now } public static randomString = (length: number, charset?: string): string => { const characters = charset || StringUtils.charset let result = '' for (let i = 0; i < length; i += 1) { result += characters.charAt(Math.floor(Math.random() * characters.length)) } return result } public static encript = (rootString: string, privateKey: string): string => { const hash = StringUtils.generateCharset(privateKey) let result = '' for (let i = 0; i < rootString.length; i += 1) { const index = StringUtils.charset.indexOf(rootString[i]) if (index === -1) { result += rootString[i] } else { result += hash[index] } } return result } public static decript = (cipherText: string, privateKey: string): string => { const hash = StringUtils.generateCharset(privateKey) let result = '' for (let i = 0; i < cipherText.length; i += 1) { const index = hash.indexOf(cipherText[i]) if (index === -1) { result += cipherText[i] } else { result += StringUtils.charset[index] } } return result } public static convertViToEn = (root: string): string => root .normalize('NFD') .replace(/[\u0300-\u036f]/g, '') .replace(/đ/g, 'd') .replace(/Đ/g, 'D') public static formatNumber = (number: number, fixed = 3, part = 3, sec = ',', dec = '.') => { const regex = '\\d(?=(\\d{' + part + '})+' + (fixed > 0 ? '\\D' : '$') + ')' return number .toFixed(fixed) .replace('.', dec) .replace(new RegExp(regex, 'g'), '$&' + sec) } } export default StringUtils export const { formatNumber } = StringUtils export const { randomString } = StringUtils export const { encript } = StringUtils export const { decript } = StringUtils export const { convertViToEn } = StringUtils |
Encrypt và Decrypt trong Javascript
Author: admin - Posted: 08/03/22 - Update: 22/08/22
