Openssl pkcs7命令

一、简介

pkcs7命令用于处理DER或者PEM格式的pkcs#7文件

二、语法

openssl pkcs7 [-inform PEM|DER] [-outform PEM|DER] [-in filename] [-out filename] [-print] [-print_certs] [-text] [-noout] [-engine id]

选项

-inform arg   input format - DER or PEM
 -outform arg  output format - DER or PEM
 -in arg       input file
 -out arg      output file
 -print_certs  print any certs or crl in the input
 -text         print full details of certificates
 -noout        don't output encoded data
 -engine e     use engine e, possibly a hardware device.

三、实例

1、把一个PKCS#7文件从PEM格式转换成DER格式

openssl pkcs7 -in file.pem -outform DER -out file.der

2、 打印PKCS#7格式CRL列表

openssl pkcs7 -in crlpkcs7.pem -print_certs

参考：http://blog.csdn.net/as3luyuan123/article/details/16105407