MySecretKey is a lightweight local encryption and decryption tool that supports multiple symmetric/asymmetric encryption algorithms such as AES, DES, 3DES, RSA, as well as Base64 encoding and decoding and commonly used hash digests (MD5, SHA-1/224/256/384/512). The application has built-in functions such as one click key generation, hexadecimal display, result copying and bookmarking, with a simple interface and intuitive operation, suitable for developers and security enthusiasts to conduct daily encryption verification, learning and demonstration. All operations are completed locally, which is convenient and efficient.