public key:

256 bytes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

Use public key to decrypt rsa file :

file.rsa:

Ano6XGyJ/MckB23pfcQPCZP1ygYcmUuB89txeUpE9PcFEcOCqb5PEhaUnZHq1CWroTRVW9TQiNhhKOQRIsYrN05hDPN9kxvO9Deni9R4/TBnMfM17oPl7aC0bGD0OqFMcyh41kfdCxkz/NCB4J84BoUrTs4JN9DwTri3wriwV0Xwq/rbk2ide5yiPEiBUT/RX1nqeIMI5SWvX64YeYF/O+aJ4aFB1D5INlLblf1Hv5AqhT4IqZ7IEWeuWqdQ+9Zbn3u80HD1Fv7kLNOxd5CqPbI9bnk9MkYVgvOFLmOd6C1mODzGCee4s6o6surOQlqt45qWq5VaBvFNilOFAu+AQA==

First, you need to Base64 decode it to get a byte array, Note: when you decrypt, you may see a lot of leading 0 in the output. Please trim them out and submit only the text message.