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author | Heiner Lohaus <heiner@lohaus.eu> | 2023-10-28 07:21:00 +0200 |
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committer | Heiner Lohaus <heiner@lohaus.eu> | 2023-10-28 07:21:00 +0200 |
commit | dc04ca93060443a3ce6263a476f4dafc66afc6b3 (patch) | |
tree | b9c645cbe897af198ea0551509f901a249af35f2 /g4f/Provider/npm/node_modules/funcaptcha/lib/crypt.js | |
parent | Update config supports_message_history (diff) | |
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Diffstat (limited to '')
-rw-r--r-- | g4f/Provider/npm/node_modules/funcaptcha/lib/crypt.js | 51 |
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, +}; |