「青锋爱分享」Springboot+Python之RSA加解密方案(RSA深入)二

Posted 2023-03-09

参考技术A

本篇文章要结合上一节文章一起看。

青锋爱分享-RSA-Springboot+Python整合

码云搜索： 青锋 会有惊喜哦哦。

通过python生成的公钥私钥 格式PKCS1 。

生成pem格式如下：

私钥头（-----BEGIN RSA PRIVATE KEY-----）

私钥尾（-----END RSA PRIVATE KEY-----）

我需要将此私钥转换为DER编码的PKCS8未加密格式，以便与java服务器代码一起使用，特别是PKCS8EncodedKeySpec。我已经试过使用rsa和pkcs8命令的OpenSSL，如果有更简单的办法，没有特别需要使用openssl。

RSA私钥格式PKCS1和PKCS8相互转换

RSA公钥格式PKCS1和PKCS8相互转换

以下转换基于openssl命令的操作；

执行：openssl genrsa -out private.pem 1024

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

MIICXQIBAAKBgQDlLm5+Kosybacfp8hzjn1fl2wT7Au2lm5SEtz6r+/wwSfq5KfY

H8q1AO/C92IwEpplNbrqYmOXQu6P07mg0lQOCvE5sdtmAvD2ex3wCef8lWmgdh5q

Uo4OMcmoSz3IAp/7/FnMag1IelSfdronPBDxazp6NUmQZITsYK6CsEl/ewIDAQAB

AoGBAJkMdvF+i9Kzc6YqMC0rfQJ3Zs+vFOtsbmQVAMnQ8JWBCJ1O8d/c60wRQgyb

lFCyO7VXOmoIJqX/Jr2aER8bFtG+Yxy6jsMu3ynwMwbhcVmCWCmZoWuE5pZdEJk6

lOdOay7TkE45X/Wc7K9iZs2uuB7sylIvK/HVxxit6FGePa4RAkEA9e+VoAbxBv78

HyxRcStW+Kc3lmE4zYBGAb2IYx48UEN34nP5rI8Tusqsy7CZ3rvSMi1CpVlj2eQK

FU8FzVFyjwJBAO6PU9q7il8NtecdvYBkDErlCawSeCdk9s79helT0Mrg9cWaVWFO

n0UxgT55MPXWGdMRXUUOCNnMilaw/p7dKlUCQDpjGeu3GivmB2dDN0ad2nUIBftu

s3SeWoB5RdL6T6liiyi5DfJ4uV9kVKe7Epy9jIabFjJ5SWpmaDps21zGVGMCQQCB

HvK0IW3zpOgf/+jh5UUCBJYHnLeMGwm7X11rvQH1zW05Vx9/W565ROI/fjkR1qCD

rZJeHgqMWDlIUuR9+BdBAkAI8+JWgWLdWceXX9Puu4KNmGukx4GZw2n53vMKp0Fu

puQxMonRWTN+kA76cq8QIj8xuEBkdxy1NFRMEkGu675m

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

执行：openssl pkcs8 -topk8 -inform PEM -in private.pem -outform pem -nocrypt -out pkcs8.pem

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

MIICdwIBADANBgkqhkiG9w0BAQEFAASCAmEwggJdAgEAAoGBAOUubn4qizJtpx+n

yHOOfV+XbBPsC7aWblIS3Pqv7/DBJ+rkp9gfyrUA78L3YjASmmU1uupiY5dC7o/T

uaDSVA4K8Tmx22YC8PZ7HfAJ5/yVaaB2HmpSjg4xyahLPcgCn/v8WcxqDUh6VJ92

uic8EPFrOno1SZBkhOxgroKwSX97AgMBAAECgYEAmQx28X6L0rNzpiowLSt9Andm

z68U62xuZBUAydDwlYEInU7x39zrTBFCDJuUULI7tVc6aggmpf8mvZoRHxsW0b5j

HLqOwy7fKfAzBuFxWYJYKZmha4Tmll0QmTqU505rLtOQTjlf9Zzsr2Jmza64HuzK

Ui8r8dXHGK3oUZ49rhECQQD175WgBvEG/vwfLFFxK1b4pzeWYTjNgEYBvYhjHjxQ

Q3fic/msjxO6yqzLsJneu9IyLUKlWWPZ5AoVTwXNUXKPAkEA7o9T2ruKXw215x29

gGQMSuUJrBJ4J2T2zv2F6VPQyuD1xZpVYU6fRTGBPnkw9dYZ0xFdRQ4I2cyKVrD+

nt0qVQJAOmMZ67caK+YHZ0M3Rp3adQgF+26zdJ5agHlF0vpPqWKLKLkN8ni5X2RU

p7sSnL2MhpsWMnlJamZoOmzbXMZUYwJBAIEe8rQhbfOk6B//6OHlRQIElgect4wb

CbtfXWu9AfXNbTlXH39bnrlE4j9+ORHWoIOtkl4eCoxYOUhS5H34F0ECQAjz4laB

Yt1Zx5df0+67go2Ya6THgZnDafne8wqnQW6m5DEyidFZM36QDvpyrxAiPzG4QGR3

HLU0VEwSQa7rvmY=

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

执行：openssl rsa -in pkcs8.pem -out pkcs1.pem

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

MIICXQIBAAKBgQDlLm5+Kosybacfp8hzjn1fl2wT7Au2lm5SEtz6r+/wwSfq5KfY

H8q1AO/C92IwEpplNbrqYmOXQu6P07mg0lQOCvE5sdtmAvD2ex3wCef8lWmgdh5q

Uo4OMcmoSz3IAp/7/FnMag1IelSfdronPBDxazp6NUmQZITsYK6CsEl/ewIDAQAB

AoGBAJkMdvF+i9Kzc6YqMC0rfQJ3Zs+vFOtsbmQVAMnQ8JWBCJ1O8d/c60wRQgyb

lFCyO7VXOmoIJqX/Jr2aER8bFtG+Yxy6jsMu3ynwMwbhcVmCWCmZoWuE5pZdEJk6

lOdOay7TkE45X/Wc7K9iZs2uuB7sylIvK/HVxxit6FGePa4RAkEA9e+VoAbxBv78

HyxRcStW+Kc3lmE4zYBGAb2IYx48UEN34nP5rI8Tusqsy7CZ3rvSMi1CpVlj2eQK

FU8FzVFyjwJBAO6PU9q7il8NtecdvYBkDErlCawSeCdk9s79helT0Mrg9cWaVWFO

n0UxgT55MPXWGdMRXUUOCNnMilaw/p7dKlUCQDpjGeu3GivmB2dDN0ad2nUIBftu

s3SeWoB5RdL6T6liiyi5DfJ4uV9kVKe7Epy9jIabFjJ5SWpmaDps21zGVGMCQQCB

HvK0IW3zpOgf/+jh5UUCBJYHnLeMGwm7X11rvQH1zW05Vx9/W565ROI/fjkR1qCD

rZJeHgqMWDlIUuR9+BdBAkAI8+JWgWLdWceXX9Puu4KNmGukx4GZw2n53vMKp0Fu

puQxMonRWTN+kA76cq8QIj8xuEBkdxy1NFRMEkGu675m

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

可以看出结果和1是一致的；

执行：openssl rsa -in private.pem -pubout -out public.pem

-----BEGIN PUBLIC KEY-----

MIGfMA0GCSqGSIb3DQEBAQUAA4GNADCBiQKBgQDlLm5+Kosybacfp8hzjn1fl2wT

7Au2lm5SEtz6r+/wwSfq5KfYH8q1AO/C92IwEpplNbrqYmOXQu6P07mg0lQOCvE5

sdtmAvD2ex3wCef8lWmgdh5qUo4OMcmoSz3IAp/7/FnMag1IelSfdronPBDxazp6

NUmQZITsYK6CsEl/ewIDAQAB

-----END PUBLIC KEY-----

5. 从pkcs8私钥中生成pkcs8公钥
执行：openssl rsa -in pkcs8.pem -pubout -out public_pkcs8.pem

-----BEGIN PUBLIC KEY-----

MIGfMA0GCSqGSIb3DQEBAQUAA4GNADCBiQKBgQDlLm5+Kosybacfp8hzjn1fl2wT

7Au2lm5SEtz6r+/wwSfq5KfYH8q1AO/C92IwEpplNbrqYmOXQu6P07mg0lQOCvE5

sdtmAvD2ex3wCef8lWmgdh5qUo4OMcmoSz3IAp/7/FnMag1IelSfdronPBDxazp6

NUmQZITsYK6CsEl/ewIDAQAB

-----END PUBLIC KEY-----

可以看出结果和4是一样的；

执行：openssl rsa -pubin -in public.pem -RSAPublicKey_out

-----BEGIN RSA PUBLIC KEY-----

MIGJAoGBAOUubn4qizJtpx+nyHOOfV+XbBPsC7aWblIS3Pqv7/DBJ+rkp9gfyrUA

78L3YjASmmU1uupiY5dC7o/TuaDSVA4K8Tmx22YC8PZ7HfAJ5/yVaaB2HmpSjg4x

yahLPcgCn/v8WcxqDUh6VJ92uic8EPFrOno1SZBkhOxgroKwSX97AgMBAAE=

-----END RSA PUBLIC KEY-----

openssl rsa -pubin -in public_pkcs8.pem -RSAPublicKey_out

-----BEGIN RSA PUBLIC KEY-----

MIGJAoGBAOUubn4qizJtpx+nyHOOfV+XbBPsC7aWblIS3Pqv7/DBJ+rkp9gfyrUA

78L3YjASmmU1uupiY5dC7o/TuaDSVA4K8Tmx22YC8PZ7HfAJ5/yVaaB2HmpSjg4x

yahLPcgCn/v8WcxqDUh6VJ92uic8EPFrOno1SZBkhOxgroKwSX97AgMBAAE=

-----END RSA PUBLIC KEY-----

可以看出转换的结果是一致的；

执行：openssl rsa -RSAPublicKey_in -in pub_pkcs1.pem -pubout

-----BEGIN PUBLIC KEY-----

MIGfMA0GCSqGSIb3DQEBAQUAA4GNADCBiQKBgQDlLm5+Kosybacfp8hzjn1fl2wT

7Au2lm5SEtz6r+/wwSfq5KfYH8q1AO/C92IwEpplNbrqYmOXQu6P07mg0lQOCvE5

sdtmAvD2ex3wCef8lWmgdh5qUo4OMcmoSz3IAp/7/FnMag1IelSfdronPBDxazp6

NUmQZITsYK6CsEl/ewIDAQAB

-----END PUBLIC KEY-----

可以看到和上面4，5的结果是一致的；

最后一点：
ios上用的是pkcs8格式的公钥
openssl用的是pkcs1格式的公钥
知道私钥以后是可以导出公钥的，所以私钥一定要保证安全
知道公钥不可以导出私钥

解决方案针对是window电脑。

配置：SystemRoot/ System32 环境变量。

1、邮件我的电脑-选择下【属性】。

2、选择高级系统设置

3、选择【高级】-【环境变量】

4、双击打开path，进行编辑

5、 接着我们在这名字后面加【；System32】就可以了。

安装 Win64 OpenSSL，地址： http://slproweb.com/products/Win32OpenSSL.html

下载后根据提示一步一步安装，安装完成后：

双击start.bat 启动