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const crypto = require('crypto')
const iv = Buffer.from('0102030405060708')
const presetKey = Buffer.from('0CoJUm6Qyw8W8jud')
const linuxapiKey = Buffer.from('rFgB&h#%2?^eDg:Q')
const base62 = 'abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ0123456789'
const publicKey =
'-----BEGIN PUBLIC KEY-----\nMIGfMA0GCSqGSIb3DQEBAQUAA4GNADCBiQKBgQDgtQn2JZ34ZC28NWYpAUd98iZ37BUrX/aKzmFbt7clFSs6sXqHauqKWqdtLkF2KexO40H1YTX8z2lSgBBOAxLsvaklV8k4cBFK9snQXE9/DDaFt6Rr7iVZMldczhC0JNgTz+SHXT6CBHuX3e9SdB1Ua44oncaTWz7OBGLbCiK45wIDAQAB\n-----END PUBLIC KEY-----'
const eapiKey = 'e82ckenh8dichen8'
const aesEncrypt = (buffer, mode, key, iv) => {
const cipher = crypto.createCipheriv('aes-128-' + mode, key, iv)
return Buffer.concat([cipher.update(buffer), cipher.final()])
}
const rsaEncrypt = (buffer, key) => {
buffer = Buffer.concat([Buffer.alloc(128 - buffer.length), buffer])
return crypto.publicEncrypt(
{ key: key, padding: crypto.constants.RSA_NO_PADDING },
buffer,
)
}
const weapi = (object) => {
const text = JSON.stringify(object)
const secretKey = crypto
.randomBytes(16)
.map((n) => base62.charAt(n % 62).charCodeAt())
return {
params: aesEncrypt(
Buffer.from(
aesEncrypt(Buffer.from(text), 'cbc', presetKey, iv).toString('base64'),
),
'cbc',
secretKey,
iv,
).toString('base64'),
encSecKey: rsaEncrypt(secretKey.reverse(), publicKey).toString('hex'),
}
}
const linuxapi = (object) => {
const text = JSON.stringify(object)
return {
eparams: aesEncrypt(Buffer.from(text), 'ecb', linuxapiKey, '')
.toString('hex')
.toUpperCase(),
}
}
const eapi = (url, object) => {
const text = typeof object === 'object' ? JSON.stringify(object) : object
const message = `nobody${url}use${text}md5forencrypt`
const digest = crypto.createHash('md5').update(message).digest('hex')
const data = `${url}-36cd479b6b5-${text}-36cd479b6b5-${digest}`
return {
params: aesEncrypt(Buffer.from(data), 'ecb', eapiKey, '')
.toString('hex')
.toUpperCase(),
}
}
const decrypt = (cipherBuffer) => {
const decipher = crypto.createDecipheriv('aes-128-ecb', eapiKey, '')
return Buffer.concat([decipher.update(cipherBuffer), decipher.final()])
}
module.exports = { weapi, linuxapi, eapi, decrypt }