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Base64 Encryption and Decryption

Base64 is a widely used encoding scheme that converts binary data into readable ASCII characters. Commonly used for data transmission, storage, and web content encoding. Supports fast encoding and decoding.

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/******* Update time: October 9,2024 ********/
/***** Update content: Added encoding options. *****/
1. Support GBK and GB2312
2. Support UTF8 encoding (default)