3 ms·CBC mode AES?by nwh 13y agoCBC mode AES?drdaeman 13y agoMore likely a header. It's 3081 byte blob after base64 decoding. If we consider it's encrypted with some block cipher with 128 or 256-bit blocks (IV and/or MAC would be likely to be 128-bit, too), there are 9 bytes for some header and/or padding.nwh 13y agoGood catch.