在Python 3 RSA中创建私钥时出错 [英] Error with creating Private Key in Python 3 RSA

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问题描述

我试图在Python中创建一个随机的RSA私钥,但是我收到一条错误消息,我不知道该怎么做。
我现在使用的代码来自这个我之前创建的线程,但我不会工作。



代码:



<来自Crypto import的pre> 来自Crypto.PublicKey的RSA

def random_generator():
返回Random.new()。 (32)

private_key = RSA.generate(1024,random_generator)
print(str(private_key))

错误消息:

 追溯(最近最近通话):
文件/home/simon/Python/Projects/FileServer/encrypt.py,第7行在< module>
private_key = RSA.generate(1024,random_generator)
文件/usr/lib/python3/dist-packages/Crypto/PublicKey/RSA.py,第508行,生成
obj = _RSA.generate_py(bits,rf,progress_func,e)#TODO:不要使用旧的_RSA模块
文件/usr/lib/python3/dist-packages/Crypto/PublicKey/_RSA.py,行50,在generate_py
p = pubkey.getStrongPrime(bits>>> 1,obj.e,1e-12,randfunc)
文件/ usr / lib / python3 / dist-packages / Crypto / Util / number.py,行265,在getStrongPrime
randfunc)
TypeError:random_generator()取0位置参数,但1被赋予


解决方案

文档


generate位,randfunc =无,progress_func =无,e = 65537)



参数:



...




  • randfunc (可调用) - 随机数生成函数;它应该接受一个整数N,并返回一个随机数字的字节长度为N个字节。如果没有指定,将从Crypto.Random中实例化一个新的。


您的 random_generator()不采取任何参数。它应该采用一个参数 - 返回的次数。此外,实现是坏的 - 您每次都创建一个新的实例,这可能会严重削弱其产生的数字的随机性。



但是,由于您只是使用 Crypto.Random 实例,您根本无需指定此参数 - 只需将其退出。



<$ p $从Crypto.PublicKey导入RSA

private_key = RSA.generate(1024)
print(str(private_key))






如果您提供自己的randfunc ,请将其传递给绑定读取 方法Crypto.Random 实例:



<$从Crypto导入的$ $ $ $ $ $ $ $ $ $ $ $ $ $ $ $ $ $ $ $ $ $ $ $ $ $ $ $ $ $ $ $ $ $ $ $ $ $ $ $ $ $
$ b $生成(1024,r.read)
打印(str(private_key))


I'm trying to create a random RSA Private key in Python but I'm getting a Error message and I don't know what to do. The code I'm using now is from this Thread I created earlier, but I won't work.

Code:

from Crypto import Random
from Crypto.PublicKey import RSA

def random_generator():
    return Random.new().read(32)

private_key = RSA.generate(1024, random_generator)
print(str(private_key))

Error Message:

Traceback (most recent call last):
  File "/home/simon/Python/Projects/FileServer/encrypt.py", line 7, in <module>
    private_key = RSA.generate(1024, random_generator)
  File "/usr/lib/python3/dist-packages/Crypto/PublicKey/RSA.py", line 508, in generate
    obj = _RSA.generate_py(bits, rf, progress_func, e)    # TODO: Don't use legacy _RSA module
  File "/usr/lib/python3/dist-packages/Crypto/PublicKey/_RSA.py", line 50, in generate_py
    p = pubkey.getStrongPrime(bits>>1, obj.e, 1e-12, randfunc)
  File "/usr/lib/python3/dist-packages/Crypto/Util/number.py", line 265, in getStrongPrime
    randfunc)
TypeError: random_generator() takes 0 positional arguments but 1 was given

解决方案

From the documentation:

generate(bits, randfunc=None, progress_func=None, e=65537)

Parameters:

...

  • randfunc (callable) - Random number generation function; it should accept a single integer N and return a string of random data N bytes long. If not specified, a new one will be instantiated from Crypto.Random.

Your random_generator() doesn't take any parameters. It is supposed to take one parameter - the number of byes to return. Also the implementation is bad - you're creating a new instance every time which could seriously weaken the randomness of the numbers it generates.

But since you're just using a Crypto.Random instance there's no need for you to specify this parameter at all - just leave it out.

from Crypto.PublicKey import RSA

private_key = RSA.generate(1024)
print(str(private_key))


If you insist on providing your own randfunc, pass it the bound read method of a Crypto.Random instance:

from Crypto import Random
from Crypto.PublicKey import RSA

r = Random.new()

private_key = RSA.generate(1024, r.read)
print(str(private_key))

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