Encrypting files using OpenSSL

OpenSSL is an open source for the implementation of the SSL protocol products, it mainly includes three parts: the password algorithm library, applications, SSL protocol library. OpenSSL implements most of the algorithms required by the SSL protocol.

I'll take a single description of the symmetric encryption of files using OpenSSL.

One, OpenSSL supported encryption algorithms are:

-aes-128-cbc-aes-128-cfb-aes-128-cfb1

-aes-128-cfb8-aes-128-ecb-aes-128-ofb

-aes-192-cbc-aes-192-cfb-aes-192-cfb1

-aes-192-cfb8-aes-192-ecb-aes-192-ofb

-aes-256-cbc-aes-256-cfb-aes-256-cfb1

-aes-256-cfb8-aes-256-ecb-aes-256-ofb

-aes128-aes192-aes256

-bf-bf-cbc-bf-cfb

-bf-ecb-bf-ofb-blowfish

-cast-cast-cbc-cast5-cbc

-cast5-cfb-cast5-ecb-cast5-ofb

-des-des-cbc-des-cfb

-des-cfb1-des-cfb8-des-ecb

-des-ede-des-ede-cbc-des-ede-cfb

-des-ede-ofb-des-ede3-des-ede3-cbc

-des-ede3-cfb-des-ede3-ofb-des-ofb

-des3-desx-desx-cbc

-rc2-rc2-40-cbc-rc2-64-cbc

-rc2-cbc-rc2-cfb-rc2-ecb

-rc2-ofb-rc4-rc4-40