【CentOS 7LNMP架构32】，ssl原理和生成ssl密钥对#

shallow丿ove

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ssl原理

• 客户端的浏览器发送一个https的请求给服务器
• 服务器要有一套数字证书，生成公钥和私钥，将公钥传递到客户端
• 客户端的浏览器检查公钥是否合法，若不合法显示https警告，若合法生成一串随机字符串，并用收到的公钥加密
• 客户端把加密后的随机字符串传输到服务器
• 服务器收到加密随机字符串后，先用私钥解密获取到数据，服务器再把这串随机字符串加密后的数据传输给客户端
• 客户端收到数据后，再用自己的私钥也就是随机字符串解密得到信息

生成ssl密钥对

• cd /usr/local/nginx/conf
• openssl genrsa -des3 -out tmp.key 2048 #key文件为私钥
• openssl rsa -in tmp.key -out aminglinux.key #转换key，取消密码
• rm -f tmp.key
• openssl req -new -key aminglinux.key -out aminglinux.csr #生成证书请求文件，需要拿这个文件和密钥一起生产公钥文件
• openssl x609 -req -days 365 -in aminglinux.csr -singkey aminglinux.key -out aminglinux.crt
• 这里的aminglinux.crt为公钥

[root@localhost vhost]# cd /usr/local/nginx/conf/
[root@localhost conf]# rpm -qf `which openssl`
openssl-1.0.2k-8.el7.x86_64
[root@localhost conf]# openssl genrsa -des3 -out tmp.key 2048
Generating RSA private key, 2048 bit long modulus
........................+++
......................................+++
e is 65537 (0x10001)
Enter pass phrase for tmp.key:
Verifying - Enter pass phrase for tmp.key:

至少4位

[root@localhost conf]# openssl rsa -in tmp.key -out user.key
Enter pass phrase for tmp.key:
writing RSA key
[root@localhost conf]# rm -f tmp.key 

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Standard commands
asn1parse         ca                ciphers           cms               
crl               crl2pkcs7         dgst              dh                
dhparam           dsa               dsaparam          ec                
ecparam           enc               engine            errstr            
gendh             gendsa            genpkey           genrsa            
nseq              ocsp              passwd            pkcs12            
pkcs7             pkcs8             pkey              pkeyparam         
pkeyutl           prime             rand              req               
rsa               rsautl            s_client          s_server          
s_time            sess_id           smime             speed             
spkac             ts                verify            version           
x509              

Message Digest commands (see the `dgst' command for more details)
md2               md4               md5               rmd160            
sha               sha1              

Cipher commands (see the `enc' command for more details)
aes-128-cbc       aes-128-ecb       aes-192-cbc       aes-192-ecb       
aes-256-cbc       aes-256-ecb       base64            bf                
bf-cbc            bf-cfb            bf-ecb            bf-ofb            
camellia-128-cbc  camellia-128-ecb  camellia-192-cbc  camellia-192-ecb  
camellia-256-cbc  camellia-256-ecb  cast              cast-cbc          
cast5-cbc         cast5-cfb         cast5-ecb         cast5-ofb         
des               des-cbc           des-cfb           des-ecb           
des-ede           des-ede-cbc       des-ede-cfb       des-ede-ofb       
des-ede3          des-ede3-cbc      des-ede3-cfb      des-ede3-ofb      
des-ofb           des3              desx              idea              
idea-cbc          idea-cfb          idea-ecb          idea-ofb          
rc2               rc2-40-cbc        rc2-64-cbc        rc2-cbc           
rc2-cfb           rc2-ecb           rc2-ofb           rc4               
rc4-40            rc5               rc5-cbc           rc5-cfb           
rc5-ecb           rc5-ofb           seed              seed-cbc          
seed-cfb          seed-ecb          seed-ofb          zlib

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自定义证书

[root@localhost conf]# openssl req -new -key user.key -out user.csr
You are about to be asked to enter information that will be incorporated
into your certificate request.
What you are about to enter is what is called a Distinguished Name or a DN.
There are quite a few fields but you can leave some blank
For some fields there will be a default value,
If you enter '.', the field will be left blank.
-----
Country Name (2 letter code) [XX]:11
State or Province Name (full name) []:BeiJing
Locality Name (eg, city) [Default City]:Beijing
Organization Name (eg, company) [Default Company Ltd]:MC
Organizational Unit Name (eg, section) []:user
Common Name (eg, your name or your server's hostname) []:user
Email Address []:user@user.com

Please enter the following 'extra' attributes
to be sent with your certificate request
A challenge password []:user
An optional company name []:user

[root@localhost conf]# openssl x509 -req -days 365 -in user.csr -signkey user.key -out user.crt
Signature ok
subject=/C=11/ST=BeiJing/L=Beijing/O=MC/OU=user/CN=user/emailAddress=user@user.com
Getting Private key
[root@localhost conf]# ls user.
user.crt  user.csr  user.key 

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转载于:https://my.oschina.net/u/3892756/blog/3069418