Don't use this for anything important, and certainly not with a non-unique password. Key is derived from a single SHA256 (can be brute-forced very rapidly), cy

Don't use this for anything important, and certainly not with a non-unique password. Key is derived from a single SHA256 (can be brute-forced very rapidly), cyphertext isn't authenticated (can be tampered with or corrupted without anything noticing), and the padding function is broken (strips trailing NULLs, so no good for binary files).