OpenSSL programming-rsa programming
This paper was published by Tai Tong on June 26, 2014, viewed: 1,954 times, Comments: 0
One. RSA PEM file format 1. PEM private key format file-----BEGIN RSA PRIVATE KEY----------END RSA PRIVATE KEY----- 2. PEM
Many of us use good OpenSSH as a replacement for old telnet and rsh commands, and OpenSSH are not only secure but also encrypted.One of the more appealing features of OpenSSH is its ability to authenticate users with RSA and DSA authentication
Introduction
rsa cryptosystem is a public key cryptosystem which is proposed earlier. In 1978, Rivest,shamir and Adleman of the Massachusetts Institute of MIT (MIT) presented an asymmetric (public key) cryptosystem based on number theory, called
Public key cryptography system and RSA public key algorithm
Abstract:
This article briefly introduces the ideas and features of the public key cryptography system, and introduces the theoretical basis, working principle and implementation process
1. Overview of Asymmetric encryption algorithmsAsymmetric encryption algorithm is also called Public key algorithm, which solves the problem of symmetric encryption algorithm key distribution, the basic features of asymmetric encryption algorithm
This section describes the RSA functions of OpenSSL, which are helpful for learning and implementing RSA Algorithms.
Basic Structure of RSA
Struct
{
Int pad;
Long version;
Const rsa_method * meth;
Engine * engine;
Bignum * n; n = p * q
Bignum * E;
The original moved, even from here to turn the bar:
ZZ from:http://blog.csdn.net/lazyclough/article/details/7646696
command to generate OpenSSL RSA key:
OpenSSL genrsa-out Private.key 1024OpenSSL rsa-in private.key-pubout-out public.key BIO * key =
"Asymmetric Encryption Algorithm". (1) Party B generates two keys (public and private). The public key is public and can be obtained by anyone, and the private key is confidential. (2Party A obtains the public key of party B, then uses it to
The OpenSSH RSA and DSA authentication protocol is based on a pair of specially generated keys, called private keys and public keys, respectively. The advantage of using these key-based authentication systems is that in many cases it is possible to
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