openssl convert pem to pkcs7

First, Introduction The PKCS7 command is used to process pkcs#7 files in der or PEM format. Second, the grammar OpenSSL PKCS7 [-inform pem| DER] [-outform pem| DER] [- in filename] [-outfilename] [ID]Options -inform arg input format--outform arg

First, Introduction PKCS7 command for handling pkcs#7 files in der or PEM format Second, the grammar OpenSSL PKCS7 [-inform pem| DER] [-outform pem| DER] [- in filename] [-outfilename] [ID]Options-inform arg input format--outform arg output

Different certificates are stored in different formats (such as whether the public key or private key is encrypted for storage, a single certificate, or multiple certificates), and are encoded differently (der/base64) different standards (such as

OpenSSL encoding rules1. data encoding format Openssl data encoding rules are based on ans.1. What is ans.1? An Explanation on top of the project ASN.1 (Abstract Syntax Notation One) is a structured Description Language, which consists of two parts:

The concepts related to certificates are really tricky because they haven't been exposed to certificate encryption before, because there's a whole new term coming up that looks like something else in another field, not something that we're familiar

Various types of certificates because the contents of the store are different (such as whether the public/private key is encrypted storage/single certificate or multi-certificate, etc.), the adoption of different encoding (DER/BASE64), the standard

The main file types and protocols for certificates are: PEM, DER, PFX, JKS, KDB, CER, Key, CSR, CRT, CRL, OCSP, SCEP, etc. Pem–openssl uses the PEM (privacy enhanced Mail) format to hold various information, which is the default way of storing

Http://blog.chinaunix.net/uid-26575352-id-3073802.html Common certificate formats and mutual conversionsThe PKCS full name is Public-key cryptography standards, a set of standards developed by RSA Labs and other security system developers to

First step: Generate private key, CSR and other filesWe may need to enter the following information (interactive):---country name (2 letter code) [Au]:usstate or province name ("full name") [some-state]:new yorklocality name (eg, city) [] :

Formats and differences of digital certificates Certificates that exist as files are generally in the following formats: 　　1.Certificate with Private Key It is defined by the public key cryptography standards #12 and PKCS #12 standards. It contains