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49 lines
1.6 KiB
49 lines
1.6 KiB
import crypto from "crypto";
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export function sha256(data) {
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return crypto.createHash("sha256").update(data).digest();
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}
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export function uniqueRid() {
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return Math.floor(Math.random() * 10e12);
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}
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export function validateRid(decryptedData, rid) {
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if (decryptedData.rid !== rid) {
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throw new Error("RequestID mismatch");
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}
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return decryptedData;
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}
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export function decrypt(data, ivKey) {
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const iv = ivKey.slice(0, ivKey.length / 2);
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const key = ivKey.slice(ivKey.length / 2, ivKey.length);
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const cipher = crypto.createDecipheriv("aes-128-cbc", key, iv);
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return Buffer.concat([cipher.update(data, "base64"), cipher.final()]).toString();
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}
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export function createEncryptionToken(oldTokenBuff, updateToken) {
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const updateTokenBuff = Buffer.from(updateToken, "hex");
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const mergedBuffer = Buffer.concat([oldTokenBuff, updateTokenBuff], oldTokenBuff.length + updateTokenBuff.length);
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return sha256(mergedBuffer);
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}
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export function encrypt(data, ivKey) {
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if (typeof data !== "string") {
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throw new Error("data no es un string");
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}
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if (!(ivKey instanceof Buffer)) {
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throw new Error("ivKey no es un buffer");
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}
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if (ivKey.length !== 32) {
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throw new Error("ivKey tiene que tener tamaño 32");
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}
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const stringIVKey = ivKey.toString("hex");
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const stringIV = stringIVKey.substring(0, stringIVKey.length / 2);
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const stringKey = stringIVKey.substring(stringIVKey.length / 2, stringIVKey.length);
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const iv = Buffer.from(stringIV, "hex");
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const key = Buffer.from(stringKey, "hex");
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const cipher = crypto.createCipheriv("aes-128-cbc", key, iv);
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return cipher.update(data, "utf8", "base64") + cipher.final("base64");
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}
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