def decode_aes256_cbc_base64(data, encryption_key):
if not data:<EOL><INDENT>return b'<STR_LIT>'<EOL><DEDENT>else:<EOL><INDENT>return decode_aes256(<EOL>'<STR_LIT>',<EOL>decode_base64(data[<NUM_LIT:1>:<NUM_LIT>]),<EOL>decode_base64(data[<NUM_LIT>:]),<EOL>encryption_key)<EOL><DEDENT>
Decrypts base64 encoded AES-256 CBC bytes.