我是密码学的全新人物.我想从服务器端生成RSA密钥对,并将其发送给所有客户端(浏览器).但在此之前,我只是通过加密python中的数据并通过pubnub发送到index.html文件并尝试在JavaScript中解密来测试场景.问题是当我做加密时;

random_generator = Random.new().read

key = RSA.generate(1024, random_generator)

print key.exportKey() #

public_key = key.publickey()

print public_key.exportKey() #

msg = "hello"

enc_data = public_key.encrypt(msg, 32)

print '----ENCRYPTED DATA----'

enc = enc_data[0]

并发送加密数据enc,它给我这个错误：

UnicodeDecodeError: 'utf8' codec can't decode byte 0xc4 in position 2: invalid continuation byte

我试着把它转换成

enc = base64.b64encode(enc_data[0])

它发送没有错误.但JS解密方法获取无

var enc_from_python = $('#input').val();

console.log("ENCRYPTED data:", enc_from_python);

var decrypt = new JSEncrypt();

decrypt.setPrivateKey($('#privkey').val());

var uncrypted = decrypt.decrypt(enc_from_python);

console.log(">>>",uncrypted); //

这两个代码都可以自己进行加/减.我还尝试使用python中收到的密钥对来加密/解析JS中的数据,这很有效.我想问题是来自Pycrypto的编码数据的unicode编码格式不匹配.谁能告诉我在这里我错过了什么.

Python的完整代码：

import time

from pubnub.pnconfiguration import PNConfiguration

from pubnub.pubnub import PubNub

from Crypto.PublicKey import RSA

from Crypto import Random

import base64

pnconfig = PNConfiguration()

pnconfig.subscribe_key = 'demo'

pnconfig.publish_key = 'demo'

channel = "my_channel"

pubnub = PubNub(pnconfig)

def my_publish_callback(envelope, status):

if not status.is_error():

pass # Message successfully published to specified channel.

else:

pass # Handle message publish error. Check 'category' property to find out possible issue

time.sleep(1)

random_generator = Random.new().read

key = RSA.generate(1024, random_generator)

print key.exportKey() #

public_key = key.publickey()

print public_key.exportKey() #

msg = "hello"

enc_data = public_key.encrypt(msg, 32)

print '----ENCRYPTED DATA----'

#enc = enc_data[0]

enc = base64.b64encode(enc_data[0])

print enc

#print type(enc_data[0])

print '----ENCRYPTED DATA----'

print ''

print '----DECRYPTED DATA begin----'

print key.decrypt(enc_data[0])

print '----DECRYPTED DATA end----'

pubnub.publish().channel(channel).message({"data": enc , "private": (key.exportKey()), "public" : (public_key.exportKey())}).async(my_publish_callback)

和完整的JS代码是;

JavaScript RSA Encryption

// Call this code when the page is done loading.

$(function() {

pubnub = new PubNub({

publish_key: 'demo',

subscribe_key: 'demo'

});

pubnub.subscribe({

channels: ['my_channel']

});

pubnub.addListener({

message: function(message) {

var msg = message.message;

console.log("msg:" + JSON.stringify(msg));

if (msg.private){

$("#privkey").val(msg.private);

}

if(msg.public){

$("#pubkey").val(msg.public);

}

if(msg.data){

$("#input").val(msg.data);

}

}

})

// Run a quick encryption/decryption when they click.

$('#testme').click(function() {

var enc_from_python = $('#input').val();

console.log("ENCRYPTED data:", enc_from_python);

// Decrypt with the private key...

var decrypt = new JSEncrypt();

decrypt.setPrivateKey($('#privkey').val());

var uncrypted = decrypt.decrypt(enc_from_python);

console.log(">>>",uncrypted); //

// Now a simple check to see if the round-trip worked.

if (uncrypted == $('#input').val()) {

alert('It works!!!');

}

else {

alert('Something went wrong....');

}

});

});

Private Key

Public Key

Text to decrypt:

This is a test!

解决方法:

如果您使用Crypto.Cipher.PKCS1_v1_5则可以.

这是python代码.

我只测试了python 3,但我相信它应该在python 2中使用__future__导入.

from __future__ import unicode_literals, print_function # python2

from Crypto.PublicKey import RSA

from Crypto.Cipher import PKCS1_v1_5

import base64

private_key = """-----BEGIN RSA PRIVATE KEY-----

MIIBOwIBAAJBANBOMQo9wX55+w1ijEaPoYRP2T4BOjoFv3ma0QWqYYQ8FH0z14Zc

B/jb0j2PWpyNcsUUBovj+yWxQnQohCck64kCAwEAAQJBAL4s9PbNpO9MfFkfBMSS

8zoyEDtcsYUxpDtojbandDpdXfvn5D279QaOVLb1C3DgQTTEmroYB8dbeZBc5YJC

2AECIQDqyUn68ehRcx/EyLMUB1IuckZBWCIApgfn7phgVwSwiQIhAOMgY4bN+xrx

UV15Ian4ZbkME1IbAvDPcWuNGHxdsaMBAiBoz0K/S44yDfp4lj+bCUmeglTqhrVn

JLcSymgrWa02QQIhAMJFvPvcilGkYl1atCHHt3LN0mTjd+N0/OXq3SvblIsBAiAc

8RzaV1GmjMEJxw9vM/tQwQg0kyAPlITMRXnwGA6E0A==

-----END RSA PRIVATE KEY-----"""

rsa = RSA.importKey(private_key)

cipher = PKCS1_v1_5.new(rsa)

def encrypt(msg):

ciphertext = cipher.encrypt(msg.encode('utf8'))

return base64.b64encode(ciphertext).decode('ascii')

def decrypt(msg):

ciphertext = base64.b64decode(msg.encode('ascii'))

plaintext = cipher.decrypt(ciphertext, b'DECRYPTION FAILED')

return plaintext.decode('utf8')

ciphertext = encrypt('hello stackoverflow!')

print(ciphertext)

plaintext = decrypt(ciphertext)

print(plaintext)

从明文“hello stackoverflow！”输出样本密文：

tZDRXXcf7ppbVr9JBHQ3+2k3geofl8BdDmLT3HRoqBGvfknY+xISbvy5hYH2alPAUDu2ae4iSYsLyRFBOnzpgw==

在javascript中,原始代码应该有效.这是一个简化版本,用于演示此特定密文和私有rsa密钥的工作原理.

const decrypt = () => {

const privateKey = document.getElementById('private_key').value

const cipherText = document.getElementById('ciphertext').value

const decrypt = new JSEncrypt()

decrypt.setPrivateKey(privateKey)

const plainText = decrypt.decrypt(cipherText) || 'DECRYPTION FAILED'

document.getElementById('plaintext').innerHTML = plainText

}

document.querySelector('button').addEventListener('click', decrypt)

Decrypt

plaintext:

ciphertext:

tZDRXXcf7ppbVr9JBHQ3+2k3geofl8BdDmLT3HRoqBGvfknY+xISbvy5hYH2alPAUDu2ae4iSYsLyRFBOnzpgw==

private key:

-----BEGIN RSA PRIVATE KEY-----

MIIBOwIBAAJBANBOMQo9wX55+w1ijEaPoYRP2T4BOjoFv3ma0QWqYYQ8FH0z14Zc

B/jb0j2PWpyNcsUUBovj+yWxQnQohCck64kCAwEAAQJBAL4s9PbNpO9MfFkfBMSS

8zoyEDtcsYUxpDtojbandDpdXfvn5D279QaOVLb1C3DgQTTEmroYB8dbeZBc5YJC

2AECIQDqyUn68ehRcx/EyLMUB1IuckZBWCIApgfn7phgVwSwiQIhAOMgY4bN+xrx

UV15Ian4ZbkME1IbAvDPcWuNGHxdsaMBAiBoz0K/S44yDfp4lj+bCUmeglTqhrVn

JLcSymgrWa02QQIhAMJFvPvcilGkYl1atCHHt3LN0mTjd+N0/OXq3SvblIsBAiAc

8RzaV1GmjMEJxw9vM/tQwQg0kyAPlITMRXnwGA6E0A==

-----END RSA PRIVATE KEY-----

标签：pycrypto,python,encryption,rsa,jsencrypt

来源： https://codeday.me/bug/20190823/1699828.html