分享WHFoundationExtension

WHFoundationExtension is an extension of Foundation framework written in Swift.

• Create a UInt from Data with given byte ordering
• Conversion between Date and String
• Conversion between Dictionary and String
• URL Encoding
• Base-64 encoding or decoding support
• Conversion between Data and hexadecimal string
• Create or parse a SecCertificate in a convinence way
• Generate hash for Data with a hashing algorithm, SHA1,SHA224...
• Symmetric encryption support
• RSA support, such as generating a key pair, encryption and Signature