Openssl x509命令

一、简介

x509指令是一个功能很丰富的证书处理工具。可以用来显示证书的内容，转换其格式，给CSR签名等

二、语法

openssl  x509 [-inform DER|PEM|NET] [-outform DER|PEM|NET] [-keyform DER|PEM] [-CAform DER|PEM]
[-CAkeyform DER|PEM] [-in filename] [-out filename] [-passin arg] [-serial] [-hash] [-subject_hash]
[-subject_hash_old] [-issuer_hash] [-issuer_hash_old] [-subject] [-issuer] [-nameopt option] [-email]
[-ocspid] [-ocsp_uri] [-startdate] [-enddate] [-dates] [-purpose] [-modulus] [-fingerprint] [-alias] [-noout]
[-trustout] [-clrtrust] [-clrreject] [-addtrust arg] [-addreject arg] [-setalias arg] [-days arg] [-checkend arg]
[-set_serial n] [-signkey filename] [-x509toreq] [-req] [-CA filename] [-CAkey filename] [-CAcreateserial]
[-CAserial filename] [-certopt] [-text] [-C] [-md2|-md5|-sha1|-mdc2] [-clrext] [-extfile filename]
[-extensions section] [-engine id]

选项

 -inform arg     - input format - default PEM (one of DER, NET or PEM)
 -outform arg    - output format - default PEM (one of DER, NET or PEM)
 -keyform arg    - private key format - default PEM
 -CAform arg     - CA format - default PEM
 -CAkeyform arg  - CA key format - default PEM
 -in arg         - input file - default stdin
 -out arg        - output file - default stdout
 -passin arg     - private key password source
 -serial         - print serial number value
 -subject_hash   - print subject hash value
 -subject_hash_old   - print old-style (MD5) subject hash value
 -issuer_hash    - print issuer hash value
 -issuer_hash_old    - print old-style (MD5) issuer hash value
 -hash           - synonym for -subject_hash
 -subject        - print subject DN
 -issuer         - print issuer DN
 -email          - print email address(es)
 -startdate      - notBefore field
 -enddate        - notAfter field
 -purpose        - print out certificate purposes
 -dates          - both Before and After dates
 -modulus        - print the RSA key modulus
 -pubkey         - output the public key
 -fingerprint    - print the certificate fingerprint
 -alias          - output certificate alias
 -noout          - no certificate output
 -ocspid         - print OCSP hash values for the subject name and public key
 -ocsp_uri       - print OCSP Responder URL(s)
 -trustout       - output a "trusted" certificate
 -clrtrust       - clear all trusted purposes
 -clrreject      - clear all rejected purposes
 -addtrust arg   - trust certificate for a given purpose
 -addreject arg  - reject certificate for a given purpose
 -setalias arg   - set certificate alias
 -days arg       - How long till expiry of a signed certificate - def  days
 -checkend arg   - check whether the cert expires in the next arg seconds
                   exit  if so,  if not
 -signkey arg    - self sign cert with arg
 -x509toreq      - output a certification request object
 -req            - input is a certificate request, sign and output.
 -CA arg         - set the CA certificate, must be PEM format.
 -CAkey arg      - set the CA key, must be PEM format
                   missing, it is assumed to be in the CA file.
 -CAcreateserial - create serial number file if it does not exist
 -CAserial arg   - serial file
 -set_serial     - serial number to use
 -text           - print the certificate in text form
 -C              - print out C code forms
 -<dgst>         - digest to use, see openssl dgst -h output for list
 -extfile        - configuration file with X509V3 extensions to add
 -extensions     - section from config file with X509V3 extensions to add
 -clrext         - delete extensions before signing and input certificate
 -nameopt arg    - various certificate name options
 -engine e       - use engine e, possibly a hardware device.
 -certopt arg    - various certificate text options

三、实例

1、生成自签名证书

openssl req -x509 -newkey rsa: -keyout prikey.pem -passout pass:"" -new -out certself.pem

2、签发证书

签发v1格式证书

openssl x509 -req -in client_req.csr -CA certself.pem -CAkey prikey.pem  -out client_cert.pem -CAcreateserial -days  -passin pass:""

签发v3格式证书

http://blog.csdn.net/wangsifu2009/article/details/6578069

openssl x509 -sha1 -req -in users.csr -CA caself.pem -CAkey cakey.pem -CAcreateserial -out users.pem -days  -passin pass: -extfile /usr/share/ssl/openssl.cnf –extensions v3_req

3、查看证书内容

openssl x509 -in cert.pem –noout -text

openssl x509 -in cert.pem –noout –srial

openssl x509 -in cert.pem –noout –subject

openssl x509 -in cert.pem –noout –issuer

openssl x509 -in cert.pem –noout –dates

openssl x509 -in cert.pem –noout –pubkey

4、从证书中提取证书请求文件

openssl x509 -x509toreq -in certself.pem -out req.pem -signkey prikey.pem -passin pass:"123456"

5、从证书中提取公钥

openssl x509 -in certself.pem -pubkey -noout > pubkey2.pem

参考：http://blog.csdn.net/as3luyuan123/article/details/16873093