OpenSSL原理及基本使用

OpenSSL SSLSSLSecure Sockets LayerInternetNetscape()WebSSL,Internet SSL/***SSL(TCP)SSL(HTTPFTPTELNET)SSLSSL OpenSSLSSL OpenSSLSSLOpenSSL MD5SHADHBASE64SSL API OpenSSL AES, Blowfish, Camellia, SEED, CAST-128, DES, IDEA, RC2, RC4, RC5, Triple DES, GOST 28147-89[3] MD5, MD2, SHA-1, SHA-2, RIPEMD-160, MDC-2, GOST R 34.11-94[3] RSA, DSA, DiffieHellman key exchange, Elliptic curve, GOST R 34.10-2001[3] opensslopensslOpenSSL OpenSSLopenssllibcryptolibssl openssl libcrypto libsslssl
OpenSSL openssl command [command_options] [args] opensslopenssl version centos1.0.1e(1.0.1g) OpenSSLenc openssl enc -e – -a -salt -in -out openssl enc -d – -a -salt -in -out -eencrypt -ddecrypt -abase64 -salt 1etcpasswdopenssl enc -e -des -a -salt -in /etc/passwd -out ./passwd.crypt

openssl enc -d -des -a -salt -in passwd.crypt -out passwd

OpenSSL genrsa, (umask 077;openssl genrsa -out ) umaskshellumask
openssl rsa -in -pubout
2
(umask 077; openssl genrsa -out crypt.key 2048) openssl rsa -in crypt.key -pubout > pub.keyOpenSSLmd5sha1md5sha
openssl dgst –

3md5openssl dgst -md5 passwd–he免费云主机域名lpman
openssl enc | genrsa | dgst –helpman enc | genrsa | dgst

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