PyCrypto：生成使用DES3密码保护的RSA密钥

问题描述

通过使用以下命令，我已经能够使用DES3创建受密码保护的RSA密钥（嗯...我认为，因为我对这个加密世界非常新） >

  openssl genrsa -out/tmp/myKey.pem-passout pass：f00bar-des3 2048 
  

如果可能的话，我想在Python脚本中使用PyCrypto。我看到了，似乎以阻止使用PyCrypto来做到这一点。还是这样吗？

当然可以随时调用 os.execute ，并执行上述命令，但我认为欺骗： - ）。我非常喜欢学习PyCrypto。

提前谢谢。

解决方案

从PyCrypto 2.5开始，您可以导出RSA私钥并使其受密码保护。三重DES密钥从密码短语内部导出，用于执行实际加密。

例如：

<$来自Crypto import RSA
从$ Cr $ import

random_generator = Random.new（）。read
key = RSA.generate（1024 ，random_generator）
exportsKey = key.exportKey（'PEM'，'我的秘密'，pkcs = 1）

变量 exportedKey 包含密钥的ASCII版本（PEM），根据PKCS＃1（加密标准）进行编码，另一个选项是 pkcs = 8 为 - 猜猜 - PKCS＃8）。由于结果是标准的，因此可以使用其他几个程序，包括openssl。
当然你也可以通过PyCrypto重新导入到python！

exportKey 方法记录为。

I have been able to create a RSA key protected by password with DES3 (well... I think because I'm very new to this encryption world) by using the command:

openssl genrsa -out "/tmp/myKey.pem" -passout pass:"f00bar" -des3 2048

Now, I would like to do that inside a Python script, using PyCrypto, if possible. I have seen this message, which seems to discourage the use of PyCrypto to do that. Is it still like that?

Of course I can always call os.execute, and execute the above command, but I'd consider that "cheating" :-). I'm pretty much doing this to learn PyCrypto.

Thank you in advance.

解决方案

Starting from PyCrypto 2.5 you can export an RSA private key and have it protected under a passphrase. A Triple DES key is internally derived from the passphrase and used to perform the actual encryption.

For instance:

from Crypto import RSA
from Crypto import Random

random_generator = Random.new().read
key = RSA.generate(1024, random_generator)
exportedKey = key.exportKey('PEM', 'my secret', pkcs=1)

The variable exportedKey contains an ASCII version (PEM) of the key, encoded according to PKCS#1 (a cryptographic standard. Another option is pkcs=8 for - guess what - PKCS#8). Since the result is standard, you can use it with several other programs, including openssl.And of course, you can also re-import it back into python via PyCrypto!

The exportKey method is documented here.

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