cryptage eeprom

[RAYMON]

hi

I have an electronic base map of a microcontroller and an external EEPROM, the program that I use terminal that uses the usb port of the PC, which I use a view data in memory and also has erased.


Or maybe the data is compressed in the eeprom and how to decompress?
My problem is that the data is encrypted, I think they are stored in the eeprom to clear, and the microcontroller will encrypt before sending them to the PC.

An example:

ª ª ª öñ? Vu @? _ ª OQ? A? 5? ÖñûkeÒÅLÝ / 7á_Yn_. | 7M (^ F69) oa / n)
L1) | 7! _n (. N | `© M ÖñÏkRÒF.JMW8 (4puo" 2v) e. <x?a.> x? G *: E ~) R | nN
\ | NL2 "
Z_õQ? LiX,
ZNkX
. ZLiX, jmZzjJkf
(niZDht5D ~ RH0f `lr/dzpH4 + DzVR3XDTJ) DxVPlDjJ / D ~ hPlDlJ) DxVRf_õQ - @` BZT TH6 + \-Nbhtd @ V ^ / JbVvbBVZlnVp-dlv | 2XB ^ tXHzt4XB \ tNDR | 2FB ^ tJDRFjjzX-`pxX29JjxZ23XJzt83_õQ?) RjzZVjfDVtfFHÿÿÿÿÿÿÿÿÿÿÿÿÿÿ ÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿ ÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿ

To clear the text:

1212131323323434 = 45454556567878989890
I can use the program and save the data as I wish the problem is receiving data which are encrypted.
And changes for each reading the same text, the reading will always be different?

Thank you for your help