1 files changed, 51 insertions, 0 deletions
diff --git a/g4f/Provider/npm/node_modules/funcaptcha/lib/crypt.js b/g4f/Provider/npm/node_modules/funcaptcha/lib/crypt.js
new file mode 100644
index 00000000..67cd671c
--- /dev/null
+++ b/g4f/Provider/npm/node_modules/funcaptcha/lib/crypt.js
@@ -0,0 +1,51 @@
+"use strict";
+Object.defineProperty(exports, "__esModule", { value: true });
+const crypto_1 = require("crypto");
+function encrypt(data, key) {
+    let salt = "";
+    let salted = "";
+    let dx = Buffer.alloc(0);
+    // Generate salt, as 8 random lowercase letters
+    salt = String.fromCharCode(...Array(8).fill(0).map(_ => Math.floor(Math.random() * 26) + 97));
+    // Our final key and iv come from the key and salt being repeatedly hashed
+    // dx = md5(md5(md5(key + salt) + key + salt) + key + salt)
+    // For each round of hashing, we append the result to salted, resulting in a 96 character string
+    // The first 64 characters are the key, and the last 32 are the iv
+    for (let x = 0; x < 3; x++) {
+        dx = (0, crypto_1.createHash)("md5")
+            .update(Buffer.concat([
+            Buffer.from(dx),
+            Buffer.from(key),
+            Buffer.from(salt),
+        ]))
+            .digest();
+        salted += dx.toString("hex");
+    }
+    let aes = (0, crypto_1.createCipheriv)("aes-256-cbc", Buffer.from(salted.substring(0, 64), "hex"), // Key
+    Buffer.from(salted.substring(64, 64 + 32), "hex") // IV
+    );
+    return JSON.stringify({
+        ct: aes.update(data, null, "base64") + aes.final("base64"),
+        iv: salted.substring(64, 64 + 32),
+        s: Buffer.from(salt).toString("hex"),
+    });
+}
+function decrypt(rawData, key) {
+    let data = JSON.parse(rawData);
+    // We get our decryption key by doing the inverse of the encryption process
+    let dk = Buffer.concat([Buffer.from(key), Buffer.from(data.s, "hex")]);
+    let arr = [Buffer.from((0, crypto_1.createHash)("md5").update(dk).digest()).toString("hex")];
+    let result = arr[0];
+    for (let x = 1; x < 3; x++) {
+        arr.push(Buffer.from((0, crypto_1.createHash)("md5")
+            .update(Buffer.concat([Buffer.from(arr[x - 1], "hex"), dk]))
+            .digest()).toString("hex"));
+        result += arr[x];
+    }
+    let aes = (0, crypto_1.createDecipheriv)("aes-256-cbc", Buffer.from(result.substring(0, 64), "hex"), Buffer.from(data.iv, "hex"));
+    return aes.update(data.ct, "base64", "utf8") + aes.final("utf8");
+}
+exports.default = {
+    encrypt,
+    decrypt,
+};