62 lines
1.6 KiB
JavaScript
62 lines
1.6 KiB
JavaScript
'use strict';
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var fs = require('fs');
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var crypto = require('crypto');
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var algorithm = 'aes-256-ecb';
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class Encryption {
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static encrypt(text, privkey, pubkey) {
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var encrypted;
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try {
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var cipher = crypto.createCipher(algorithm, privkey)
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encrypted = cipher.update(text, 'utf8', 'hex')
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encrypted += cipher.final('hex');
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} catch(e) {
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console.log("Error while encrypting:", e, e.stack);
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}
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return encrypted;
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}
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static decrypt(text, privkey, pubkey) {
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var decrypted;
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try {
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var cipher = crypto.createDecipher(algorithm, privkey)
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decrypted = cipher.update(text, 'hex', 'utf8')
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decrypted += cipher.final('utf8');
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} catch(e) {
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console.log("Error while decrypting:", e, e.stack);
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}
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return decrypted;
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}
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static hashWithSHA512(data, salt) {
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if(!salt) salt = "null";
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var hash = crypto.createHmac('sha512', salt);
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hash.update(data);
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var value = hash.digest('hex');
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return value;
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}
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static sign(data, privkey, seq, salt) {
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if(!salt) salt = "null";
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var sign = crypto.createSign('RSA-SHA256');
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var hash = Encryption.hashWithSHA512(data, "" + salt)
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sign.update("" + seq + hash);
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var sig = sign.sign(privkey, 'hex');
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return sig;
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}
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static verify(data, pubkey, sig, seq, salt) {
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if(!salt) salt = "null";
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var verify = crypto.createVerify('RSA-SHA256');
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var hash = Encryption.hashWithSHA512(data, salt);
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verify.update("" + seq + hash);
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var verified = verify.verify(pubkey, sig, 'hex');
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return verified;
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}
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}
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module.exports = Encryption;
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