如何从RSA模数创建PEM格式的RSA公钥？ [英] How can I create a RSA public key in PEM format from an RSA modulus?

问题描述

我有一个RSA公钥的模数。我要将此公钥与 Python库M2Crypto配合使用，但它需要PEM格式的公钥。

I have the modulus of an RSA public key. I want to use this public key with the Python library "M2Crypto", but it requires a public key in PEM format.

因此，我必须将RSA模数转换为PEM文件。

Thus, I have to convert the RSA modulus to a PEM file.

a href =http://paste.pocoo.org/show/118040/ =nofollow noreferrer>此处。

The modulus can be found here.

任何想法？

推荐答案

M2Crypto库有重新构建公钥的方法。您需要知道公共指数 e 对于RSA密钥通常是65337，但是已经使用了诸如3或17的其他数字）和模数 n （这是问题中提供的512位数） 。请注意，文档描述了用于 e 和 n 的长度编码格式。

The M2Crypto library has a way to reconstruct a public key. You need to know the public exponent, e (often 65337 for RSA keys, but other numbers such as 3 or 17 have been used), and the modulus, n (which is the 512-bit number provided in the question). Note that the docs describe the length-encoded format used for e and n.

一旦重建了公共密钥，就可以保存到文件中，稍后再次使用，无需转换麻烦。

Once the public key has been reconstructed, it can be saved into a file and used again later without the hassle of conversion.

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