Shulou(Shulou.com)06/03 Report--

This article mainly shows you "how to encrypt nodejs". The content is easy to understand and clear. I hope it can help you solve your doubts. Let the editor lead you to study and learn how to encrypt nodejs.

Nodejs encryption methods: 1, import crypto module; 2, set the encryption type and encryption key to be used; 3, change the encoding mode from utf-8 to hex;4, and return the encrypted string.

This article operating environment: windows7 system, nodejs10.16.2 version, DELL G3 computer.

How is nodejs encrypted?

Common encryption methods for nodejs:

/ * * @ encryption module * @ md5 can be cracked by Rainbow Bar, so there is no need for * @ author lwt * * / / import module var crypto = require ('crypto') / * * @ aes192 encryption module * @ param str string string to be encrypted * @ encryption key to be used by param secret string (remember, otherwise you won't be able to decrypt it) * @ retrun string encrypted string * / exports.getEncAse192 = function (str, secret) {var cipher = crypto.createCipher ("aes192", secret) / / set the encryption type and encryption key to be used var enc = cipher.update (str, "utf8", "hex"); / / change the encoding method from utf-8 to hex; enc + = cipher.final ("hex"); / / change the encoding method from hex; enc to hex; return enc / / return encrypted string} / * * @ aes192 decryption module * @ string to be decrypted * @ the decryption key to be used by param secret string (to correspond to the encryption key of the password, otherwise you won't be able to decrypt it) * @ retrun string decrypted string * / exports.getDecAse192 = function (str, secret) {var decipher = crypto.createDecipher ("aes192", secret) Var dec = decipher.update (str, "hex", "utf8"); / / from hex to utf-8; dec + = decipher.final ("utf8"); / / from utf-8; return dec } / * * @ Hmac-sha1 encryption module (each encryption is random, irreversible) * @ param str string string to be encrypted * @ param secret string encryption key to be used * @ retrun string encrypted string * / exports.getHmac = function (str, secret) {var buf = crypto.randomBytes (16); secret = buf.toString ("hex"); / / key encryption Var Signture = crypto.createHmac ("sha1", secret); / / define the encryption method Signture.update (str); var miwen=Signture.digest () .toString ("base64"); / / the generated ciphertext will be encrypted again as plaintext and then iterated through the pbkdf2 algorithm Return miwen;} / * @ sha1 encryption module (encryption fixed, irreversible) * @ param str string string to be encrypted * @ retrun string encrypted string * / exports.getSha1 = function (str) {var sha1 = crypto.createHash ("sha1"); / / defines the encryption method: md5 is irreversible, where the md5 can be changed to the name of any hash encryption method Sha1.update (str); var res = sha1.digest ("hex"); / / encrypted value d return res;}

Encryption is to change the original information data with a certain algorithm, so that even if unauthorized users get the encrypted information, they cannot know the true meaning of the information because they do not know the method of decryption, so as to improve the security of network data transmission in this way. the common encryption algorithms are hash algorithm, HMAC algorithm, signature, symmetrical encryption algorithm and asymmetric encryption algorithm. encryption algorithms are also divided into reversible and irreversible. For example, md5 is irreversible encryption, can only be violently cracked (hit the library), we directly use these encryption algorithms in the development of NodeJS, crypto module provides encryption functions, including the OpenSSL hash, HMAC, encryption, decryption, signature and verification functions of a complete package, the core module, use does not need to install.

The above is all the contents of this article "how to encrypt nodejs". Thank you for reading! I believe we all have a certain understanding, hope to share the content to help you, if you want to learn more knowledge, welcome to follow the industry information channel!

Welcome to subscribe "Shulou Technology Information " to get latest news, interesting things and hot topics in the IT industry, and controls the hottest and latest Internet news, technology news and IT industry trends.