好的，我已经弄清楚了，节点使用OpenSSL，后者使用PKCS5进行填充。PyCrypto不处理填充，所以我自己做，只是在两者中都添加了’‘。
如果我在python代码中添加PKCS5填充，并在节点代码中删除了填充，则可以使用。
因此更新了工作代码。节点：
var crypto = require('crypto');var password = 'aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa';var input = 'hello world';var encrypt = function (input, password, callback) { var m = crypto.createHash('md5'); m.update(password) var key = m.digest('hex'); m = crypto.createHash('md5'); m.update(password + key) var iv = m.digest('hex'); var data = new Buffer(input, 'utf8').toString('binary'); var cipher = crypto.createCipheriv('aes-256-cbc', key, iv.slice(0,16)); // UPDATE: crypto changed in v0.10 // https://github.com/joyent/node/wiki/Api-changes-between-v0.8-and-v0.10 var nodev = process.version.match(/^v(d+).(d+)/); var encrypted; if( nodev[1] === '0' && parseInt(nodev[2]) < 10) { encrypted = cipher.update(data, 'binary') + cipher.final('binary'); } else { encrypted = cipher.update(data, 'utf8', 'binary') + cipher.final('binary'); } var enpred = new Buffer(encrypted, 'binary').toString('base64'); callback(enpred);};var decrypt = function (input, password, callback) { // Convert urlsafe base64 to normal base64 var input = input.replace(/-/g, '+').replace(/_/g, '/'); // Convert from base64 to binary string var edata = new Buffer(input, 'base64').toString('binary') // Create key from password var m = crypto.createHash('md5'); m.update(password) var key = m.digest('hex'); // Create iv from password and key m = crypto.createHash('md5'); m.update(password + key) var iv = m.digest('hex'); // Decipher encrypted data var decipher = crypto.createDecipheriv('aes-256-cbc', key, iv.slice(0,16)); // UPDATE: crypto changed in v0.10 // https://github.com/joyent/node/wiki/Api-changes-between-v0.8-and-v0.10 var nodev = process.version.match(/^v(d+).(d+)/); var decrypted, plaintext; if( nodev[1] === '0' && parseInt(nodev[2]) < 10) { decrypted = decipher.update(edata, 'binary') + decipher.final('binary'); plaintext = new Buffer(decrypted, 'binary').toString('utf8'); } else { plaintext = (decipher.update(edata, 'binary', 'utf8') + decipher.final('utf8')); } callback(plaintext);};encrypt(input, password, function (enpred) { console.log(enpred); decrypt(enpred, password, function (output) { console.log(output); });});蟒蛇：
from Crypto.Cipher import AESfrom hashlib import md5import base64password = 'aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa'input = 'hello world'BLOCK_SIZE = 16def pad (data): pad = BLOCK_SIZE - len(data) % BLOCK_SIZE return data + pad * chr(pad)def unpad (padded): pad = ord(padded[-1]) return padded[:-pad]def _encrypt(data, nonce, password): m = md5() m.update(password) key = m.hexdigest() m = md5() m.update(password + key) iv = m.hexdigest() data = pad(data) aes = AES.new(key, AES.MODE_CBC, iv[:16]) encrypted = aes.encrypt(data) return base64.urlsafe_b64enpre(encrypted)def _decrypt(edata, nonce, password): edata = base64.urlsafe_b64depre(edata) m = md5() m.update(password) key = m.hexdigest() m = md5() m.update(password + key) iv = m.hexdigest() aes = AES.new(key, AES.MODE_CBC, iv[:16]) return unpad(aes.decrypt(edata))output = _encrypt(input, "", password) print(output)plaintext = _decrypt(output, "", password)print("'" + plaintext + "'")
