Openssl自签证书

1. 创立根证书密钥文件(自己做CA)root.key：
openssl genrsa -des3 -out root.key


2. 创立根证书的申请文件root.csr：
openssl req -new -key root.key -out root.csr


3. 创立一个自目前日期起为期十年的根证书root.crt：
openssl x509 -req -days 3650 -sha1 -extensions v3_ca -signkey root.key -in root.csr -out root.crt


4. 创立服务器证书密钥server.key：
openssl genrsa –des3 -out server.key 2048


5.创立服务器证书的申请文件server.csr：
openssl req -new -key server.key -out server.csr


6. 创立自目前日期起管用期为期两年的服务器证书server.crt：
openssl x509 -req -days 730 -md5 -extensions v3_req -CA root.crt -CAkey root.key -CAcreateserial -in server.csr -out server.crt




1. 创立根证书密钥文件(自己做CA)root.key：
openssl genrsa -des3 -out root.key


输出内容为：
[lenin@archer ~]$ openssl genrsa -des3 -out root.key
Generating RSA private key, 512 bit long modulus
……………..++++++++++++
..++++++++++++
e is 65537 (0×10001)
Enter pass phrase for root.key: ← 输入一个新密码
Verifying – Enter pass phrase for root.key: ← 重新输入一遍密码


2. 创立根证书的申请文件root.csr：
openssl req -new -key root.key -out root.csr


输出内容为：
[lenin@archer ~]$ openssl req -new -key root.key -out root.csr
Enter pass phrase for root.key: ← 输入前面创立的密码
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 ‘.whflsc.com’, the field will be left blank.
—–
Country Name (2 letter code) [AU]:CN ← 国度代号，中国输入CN
State or Province Name (full name) [Some-State]:BeiJing ← 省的全名，拼音
Locality Name (eg, city) []:BeiJing ← 市的全名，拼音
Organization Name (eg, company) [Internet Widgits Pty Ltd]:MyCompany Corp. ← 
公司英文名


Organizational Unit Name (eg, section) []: ← 能够不输入
Common Name (eg, YOUR name) []: ← 此刻不输入
Email Address []:[email protected] ← 电子邮箱，可容易填
Please enter the following ‘extra’ attributes
to be sent with your certificate request
A challenge password []: ← 能够不输入
An optional company name []: ← 能够不输入


3. 创立一个自目前日期起为期十年的根证书root.crt：
openssl x509 -req -days 3650 -sha1 -extensions v3_ca -signkey root.key -in root.csr -out root.crt


输出内容为：
[lenin@archer ~]$ openssl x509 -req -days 3650 -sha1 -extensions v3_ca -signkey root.key -in root.csr -out root.crt
Signature ok
subject=/C=CN/ST=BeiJing/L=BeiJing/O=MyCompany Corp./emailAddress=admin@
mycompany.com


Getting Private key
Enter pass phrase for root.key: ← 输入前面创立的密码


4. 创立服务器证书密钥server.key：
openssl genrsa –des3 -out server.key 2048


输出内容为：
[lenin@archer ~]$ openssl genrsa -out server.key 2048
Generating RSA private key, 2048 bit long modulus
….+++
…………………………………………..+++
e is 65537 (0×10001)
运行时会提醒输入密码,此密码用于加密key文件(参数des3便是指加密算法,
当然也能够拨取其他你感受平安的算法.),尔后每当需读取此文件(穿越openssl
供给的号召或API)都需输入口令.万一感受不得体,也能够肃清这个口令,
但定然要批准其他的防御措施!


肃清key文件口令的号召:
openssl rsa -in server.key -out server.key


5.创立服务器证书的申请文件server.csr：
openssl req -new -key server.key -out server.csr


输出内容为：
[lenin@archer ~]$ openssl req -new -key server.key -out server.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) [AU]:CN ← 国度名目，中国输入CN
State or Province Name (full name) [Some-State]:BeiJing ← 省名，拼音
Locality Name (eg, city) []:BeiJing ← 市名，拼音
Organization Name (eg, company) [Internet Widgits Pty Ltd]:MyCompany Corp. ← 
公司英文名


Organizational Unit Name (eg, section) []: ← 能够不输入
Common Name (eg, YOUR name) []:om ← 
服务器主机名，若填写不准确，博览器会报告证书无效，但并不波及利用


Email Address []:[email protected] ← 电子邮箱，可容易填
Please enter the following ‘extra’ attributes
to be sent with your certificate request
A challenge password []: ← 能够不输入
An optional company name []: ← 能够不输入


6. 创立自目前日期起管用期为期两年的服务器证书server.crt：
openssl x509 -req -days 730 -md5 -extensions v3_req -CA root.crt -CAkey root.key -CAcreateserial -in server.csr -out server.crt


输出内容为：
[lenin@archer ~]$ openssl x509 -req -days 730 -md5 -extensions v3_req -CA root.crt -CAkey root.key -CAcreateserial -in server.csr -out server.crt








使用opensll工具来生证书过程如下:
一 )  首先创建CA根证书


1) 生成RSA private key 给CA (3 DES 加密, PEM 格式):


$ openssl genrsa -des3 -out rootca.key 1024


2) 产生一个X509结构,PEM格式的自签名证书（当然也可以由CA机构签名）


$ openssl req -new -x509 -days 365 -key rootca.key -out rootca.crt


3) 查看该根证书的详细内容


$ openssl x509 -noout -text -in rootca.crt


4) 验证证书有效性


$ openssl verify -CAfile rootca.crt rootca.crt


第一个为根证书，第二个为需要验证的子证书，由于是自签名，相当于自己给自己颁发的?
な椤?


 


二 )  用根证书颁发子证书


1) 生成一个3DES 加密,PEM格式的RSA private KEY .


 $ openssl genrsa -des3 -out user.key 1024


2) 产生证书签名请求文件(PEM格式)


$ openssl req -new -key user.key -out user.csr


3) 使用CA根证书签名


A 生成配置文件如下ca.config :
[ ca ]         
default_ca=CA_own         
[ CA_own ]         
dir=C:/openssl/bin         
certs=C:/openssl/bin                 
new_certs_dir=C:/openssl/bin         //生成子证书的目录
database=C:/openssl/bin/index.txt    //生成子证书后会更新内容到此文件     
serial=C:/openssl/bin/serial.txt     //子证书的序列号从此文件读取
certificate=C:/openssl/bin/rootca.crt   //根证书      
private_key=C:/openssl/bin/rootca.key   //根证书的私钥
default_days=365         
default_crl_days=30         
default_md=md5         
preserve=no         
policy=policy_anything         
[ policy_anything ]         
countryName=optional         
stateOrProvinceName=optional         
localityName=optional         
organizationName=optional         
organizationalUnitName=optional         
commonName=supplied         
emailAddress=optional      


B 执行如下命令来签名
  openssl ca -config ca.config -out user.crt -infiles user.csr


4) 验证证书有效性
  openssl verify -CAfile rootca.crt user.crt


  用rootca.crt的公钥验证user.crt的签名是否合法。








################################################################ 
# penssl example configuration file. 
# This is mostly used for generation of certificate requests. 
################################################################# 
[ ca ] 
default_ca= CA_default          # The default ca section 
################################################################# 
 
[ CA_default ] 
 
dir=/home/lqy/WorkShop/openssl_install/CA # Where everything is kept 
certs=$dir/certs                       # Where the issued certs are kept 
crl_dir= $dir/crl                 # Where the issued crl are kept 
database= $dir/index.txt         # database index file 
new_certs_dir= $dir/newcerts     # default place for new certs 
certificate=$dir/root.crt     # The CA certificate 
serial= $dir/serial               # The current serial number 
crl= $dir/crl.pem                 # The current CRL 
private_key= $dir/private/root.key   # The private key 
RANDFILE= $dir/.rand             # private random number file 
default_days= 365                 # how long to certify for 
default_crl_days= 30             # how long before next CRL 
default_md= md5                   # which message digest to use 
preserve= no                     # keep passed DN ordering 
 
# A few different ways of specifying how closely the request should 
# conform to the details of the CA 
 
policy= policy_match            # For the CA policy 


[ policy_match ]  
countryName= match 
stateOrProvinceName= match 
organizationName= match 
organizationalUnitName= optional 
commonName= optional
emailAddress= optional 
 
# For the `anything' policy 
# At this point in time, you must list all acceptable `object' 
# types 
 
[ policy_anything ] 
countryName = optional 
stateOrProvinceName= optional 
localityName= optional 
organizationName = optional 
organizationalUnitName = optional 
commonName= optional 
emailAddress= optional 
 
[ req ] 
default_bits = 1024 
default_keyfile= privkey.pem 
distinguished_name = req_distinguished_name 
attributes = req_attributes 
 
[ req_distinguished_name ] 
countryName= Country Name (2 letter code) 
countryName_min= 2 
countryName_max = 2 
stateOrProvinceName= State or Province Name (full name) 
localityName = Locality Name (eg, city) 
organizationName = Organization Name (eg, company) 
organizationalUnitName  = Organizational Unit Name (eg, section) 
commonName = Common Name (eg. YOUR name) 
commonName_max = 64 
emailAddress = Email Address 
emailAddress_max = 40 
 
[ req_attributes ] 
challengePassword = A challenge password 
challengePassword_min = 4 
challengePassword_max = 20 
unstructuredName= An optional company name