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封装的四种加密类文件里面封装有MD5加密工具类，对称加密工具类，非对称加密工具类，钥匙串工具类！

Name	Name	Last commit message	Last commit date
Latest commit MichaelSSY Create README.md Jan 18, 2018 68444a6 · Jan 18, 2018 History 2 Commits
Cipher-RSA	Cipher-RSA	加密工具类	Jan 18, 2018
Cipher	Cipher	加密工具类	Jan 18, 2018
SSKeychain	SSKeychain	加密工具类	Jan 18, 2018
Security	Security	加密工具类	Jan 18, 2018
.DS_Store	.DS_Store	加密工具类	Jan 18, 2018
README.md	README.md	Create README.md	Jan 18, 2018

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