使用RSA私钥生成公钥? [英] Use RSA private key to generate public key?

问题描述

我不太了解这一点:

根据: http://www.madboa.com/geek/openssl/#key-rsa ，您可以从私钥中生成公钥.

according to: http://www.madboa.com/geek/openssl/#key-rsa , You can generate a public key from a private key.

openssl genrsa -out mykey.pem 1024
openssl rsa -in mykey.pem -pubout > mykey.pub

我最初的想法是，它们是成对在一起产生的. RSA私钥是否包含总和?还是公钥?

My initial thinking was that they are generated in a pair together. Does RSA private key contain the sum? or the public key?

推荐答案

openssl genrsa -out mykey.pem 1024

实际上将产生一个公钥-私钥对.该对存储在生成的mykey.pem文件中.

will actually produce a public - private key pair. The pair is stored in the generated mykey.pem file.

openssl rsa -in mykey.pem -pubout > mykey.pub

将提取公共密钥并打印出来. 此处是指向页面的链接，该链接对此进行了更好的描述.

will extract the public key and print that out. Here is a link to a page that describes this better.

在此处中查看示例部分.要仅输出私钥的公共部分:

Check the examples section here. To just output the public part of a private key:

openssl rsa -in key.pem -pubout -out pubkey.pem

要获取用于SSH的可用公共密钥，请使用 ssh-keygen :

To get a usable public key for SSH purposes, use ssh-keygen:

ssh-keygen -y -f key.pem > key.pub

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