利用openssl对文件夹进行对称加密（如AES）和解密的ruby脚本

目的

本地保护文件或者保护上传到云空间的文件

命令用法

• -i, --in DirOrFile Source DirOrFile
• -o, --out DirOrFile Output DirOrFile
• -D, --decrypt decrypt action
• -p, --pass encrypt or decrypt password
• -d, --debug debug mode

Source DirOrFile:对于加密是明文文件目录，对于解密是加密文件目录。Output DirOrFile同理相反。
-D 是执行解密操作，默认是执行加密操作。
-p 命令中代入加密或者解密密码

配置config.json

可以用config.json来修改配置信息

• openssl 配置openssl命令
• method 配置加解密算法
• suffix 加密文件后附加的后缀名

支持的加解密算法

config.json里method可以配置加密算法
openssl支持的加解密算法都可以，列举如下算法：

• base64 Base 64
• bf-cbc Blowfish in CBC mode
• bf Alias for bf-cbc
• bf-cfb Blowfish in CFB mode
• bf-ecb Blowfish in ECB mode
• bf-ofb Blowfish in OFB mode
• cast-cbc CAST in CBC mode
• cast Alias for cast-cbc
• cast5-cbc CAST5 in CBC mode
• cast5-cfb CAST5 in CFB mode
• cast5-ecb CAST5 in ECB mode
• cast5-ofb CAST5 in OFB mode
• des-cbc DES in CBC mode
• des Alias for des-cbc
• des-cfb DES in CBC mode
• des-ofb DES in OFB mode
• des-ecb DES in ECB mode
• des-ede-cbc Two key triple DES EDE in CBC mode
• des-ede Two key triple DES EDE in ECB mode
• des-ede-cfb Two key triple DES EDE in CFB mode
• des-ede-ofb Two key triple DES EDE in OFB mode
• des-ede3-cbc Three key triple DES EDE in CBC mode
• des-ede3 Three key triple DES EDE in ECB mode
• des3 Alias for des-ede3-cbc
• des-ede3-cfb Three key triple DES EDE CFB mode
• des-ede3-ofb Three key triple DES EDE in OFB mode
• desx DESX algorithm.
• gost89 GOST 28147-89 in CFB mode (provided by ccgost engine)
• gost89-cnt `GOST 28147-89 in CNT mode (provided by ccgost engine)
• idea-cbc IDEA algorithm in CBC mode
• idea same as idea-cbc
• idea-cfb IDEA in CFB mode
• idea-ecb IDEA in ECB mode
• idea-ofb IDEA in OFB mode
• rc2-cbc 128 bit RC2 in CBC mode
• rc2 Alias for rc2-cbc
• rc2-cfb 128 bit RC2 in CFB mode
• rc2-ecb 128 bit RC2 in ECB mode
• rc2-ofb 128 bit RC2 in OFB mode
• rc2-64-cbc 64 bit RC2 in CBC mode
• rc2-40-cbc 40 bit RC2 in CBC mode
• rc4 128 bit RC4
• rc4-64 64 bit RC4
• rc4-40 40 bit RC4
• rc5-cbc RC5 cipher in CBC mode
• rc5 Alias for rc5-cbc
• rc5-cfb RC5 cipher in CFB mode
• rc5-ecb RC5 cipher in ECB mode
• rc5-ofb RC5 cipher in OFB mode
• aes-[128|192|256]-cbc 128/192/256 bit AES in CBC mode
• aes-[128|192|256] Alias for aes-[128|192|256]-cbc
• aes-[128|192|256]-cfb 128/192/256 bit AES in 128 bit CFB mode
• aes-[128|192|256]-cfb1 128/192/256 bit AES in 1 bit CFB mode
• aes-[128|192|256]-cfb8 128/192/256 bit AES in 8 bit CFB mode
• aes-[128|192|256]-ecb 128/192/256 bit AES in ECB mode
• aes-[128|192|256]-ofb 128/192/256 bit AES in OFB mode

windows平台

windows平台可以使用自带的openssl.exe，方法是用config.json.win32覆盖config.json。

使用举例

加密：encrypt_file.rb -i src -o dest
解密：encrypt_file.rb -i dest -o src2 -D

from https://github.com/xixitalk/tinytools/tree/master/encrypt_file