You have hacked Mr. Lenhalm and found his password hash:
5fdf4c8178648564c5ad0b81e6ff94e5f56cd711b408d307 d83bb749759cde0fc238d84ebafa254cb56285f9ce1fa2b0(you added the space for convenience, it was not in the hash)
Also on his desktop you found a file:
.secure_passwords.txt.
Find out his passw