Working on flashing via UDS

Through the UDS I see Encryption 1 and Encryption 2 being used.

How can I find out what encryption these are?

These are not the same across different control modules from different vendors. Your best bet is to search for specifically that control module, post about what you are actually trying to do (what control module? what are you trying to flash?), or disassemble the firmware for that control module and take apart the UDS routines.

Here are some examples:

DQ250-MQB ("encryption 1, compression 1"):

Encryption 1 is a rolling byte substitution cipher, Compression 1 is LZSS.

http://nefariousmotorsports.com/forum/index.php?topic=6583.msg148045#msg148045

Simos12 / Simos18 ("encryption A, compression A"):

Encryption A is AES with a fixed key/IV per ECU "project" (SC8, SCG, etc.), Compression A is again LZSS.

http://nefariousmotorsports.com/forum/index.php?topic=10364.msg142085#msg142085

MED9.1:

Fixed-key XOR: http://nefariousmotorsports.com/forum/index.php?topic=4983.msg51798#msg51798

In most Bosch control modules, I believe "encryption 1" is usually fixed-table/fixed-key XOR and "encryption A" is usually AES, but as you can tell, this is not a hard rule.

You realize that on most control units there is a signature check right?
So you can only flash signed software OR you need a bypass.