This instruction focus on the function of Benz DTS Monaco seed key security,explain and give you example on how to use seed-key security.

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What is Seed-key Security?

The secret seed key (seedKey) seedKey is a fixed-length 256-bit (32 byte) secret key written into an authenticator to give it an replicable identity. It is so named as it seeds all other cryptographic operations. Mercedes-Benz Key Calculator / Generator: CALCULATE KEYS BY EZS / EIS DUMP (HOT!!) Lexus, Scion, Toyota Pass-Code Calculator: PASS-CODE BY SEED NUMBER (HOT!!) JLR IDS / SDD (Coded Access) Password Calculator: PASSWORD BY SEED NUMBER (HOT!!) Free Services (Once you become a customer you can use below services unlimited, 24/7 and FREE OF CHARGE).

Seed-key security is used by some communication protocols to gain access to ECU functions, which are therefore protected from unauthorised access.

The basic idea is that the ECU provides a seed – a short string of byte values – and the tool is required to transform that seed into a key using a secret algorithm.

The ECU applies the same algorithm internally, and compares the key value given by the tool to its own value. If the two agree, the tool is assumed to “know” the secret algorithm, and access is authorised.

You need SEED KEY in case if your ECU can’t be UNLOCK for variant coding with “Steuergerat entriegeln (DJ_Zugriffsberechtigung)” And when you try to change variant codings you will have error.

ECUs with seed key

ECUs with seed key protection (these are not all ECUs)

MEMO

MEMOAMG

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MED 177

MED1775

CR61

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CR41

CR41R

CR43

CR43_T1N

SIM271DE20

CRD3S2

CRD3NPZ

IC_204 for activation of AMG menu (ask user gurgel)

UDS/Manual Method – Seed key insertion (fast method)

Instruction for CBF file (Vediamo):

1.Start Vediamo and connect to ECU thru CBF file. For example I will use MEMO

2.Press F12 or nght dick on ECU and choose MANUAL COMMAND INPUT

3.Input 27 OB – this is command for ECU to send you SEED KEY REQUEST 67 OB xx xx xx xx xx

4.Then you will need send this REQUEST to ME)) or someone who will calculate SEED KEY ANSWER for you.

5.When you will have SEED KEY ANSWER you need enter 27 OC xx xx xx xx . If ECU answer 67 OC it’s mean ECU UNLOCKED. If ECU answer 7F XX XX it’s mean SEED KEY wrong. Check if SEED KEY is right.

6.DONE! You can change variant coding now. ECU will be UNLOCKED until ECU will RESET or DISCONNECTED.

Instruction for SMR-D file (Vediamo):

1.Start Vediamo and connect to ECU thru SMR-D file. For example I will use MED40

2.Go to SECURITY ACCESS or Press F12 or right click on ECU and choose MANUAL COMMAND INPUT

3.If you in SECURITY ACCESS press Request_Seed_Variantcoding and you will have Request_Seed: XX XX XX XX If use other way Input 27 OB – this is command for ECU to send you SEED KEY REQUEST 67 OB xx xx xx xx xx

4.Then you will need send this REQUEST to ME)) or someone who will calculate SEED KEY ANSWER for you.

5.Press Send_Key_Variantcodmg and enter XX XX XX XX. Or if use other way enter 27 OC xx xx xx xx.If ECU answer Send_Key_Vanantcodmg: eALL_POSITIVE or if use other way 67 OC it’s mean ECU UNLOCKED. If ECU answer 7F XX XX it’s mean SEED KEY wrong. Check if SEED KEY is right.

6.DONE! You can change variant coding now. ECU will be UNLOCKED until ECU will RESET or DISCONNECTED.

Instruction for SMR-D file (DTS Monaco):

1.Start DTS Monaco and connect to ECU thru SMR-D file. For example I will use MED40

2.Go to SECURITY ACCESS

3.If you in SECURITY ACCESS press Request Seed Vanantcoding and you will have Request Seed OxXXXXXXXX

4.Then you will need send this REQUEST to ME)) or someone who will calculate SEED KEY ANSWER for you.

5.Enter XX XX XX XX in Settings Seed Key and Press Send Key Variantcoding. If ECU answer RESPONSE.PDU 0x67,0c it’s mean ECU UNLOCKED. If ECU answer 7F XX XX it’s mean SEED KEY wrong. Check if SEED KEY is right.

6.DONE! You can change variant coding now. ECU will be UNLOCKED until ECU will RESET or DISCONNECTED.

Source:

People who sell seed Keys:http://mhhauto.com/User-grajek4

Another possibility to unlock without seed key but with SCN online:

1.Connect plug-in

2.Enter via Xentry to MED40,MED177

3.Make online SCN – plug-in will break connection

4.Enter Vediamo to MED40

5.Make variant coding

Seed Key request from tree

at this example 2 security level may be reached, first the seed need to be requested.

–> Seed bytes Stufe 1 holen

Take a look into Ergebnisse in the lower area of the window The caculated Key needs to be send

—> dick at keys Stufe 1 senden -> type in area 2 —> click check at right side

simlar for seucritylevel 3

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Description

SKGT

The Mercedes Benz Seed-Key Generator Tool (MB SKGT) was designed to unlock MB controllers in different levels to get access to critical diagnostic procedures and functions. The unlocking challenges are kind of a question/answer game between ECU and diagnostic equipment. To give the correct secret answer to a question of the ECU you need the MB SKG Tool, which is able to calculate the correct answer. This software is specifically designed to work with Vediamo and Monaco.

There are several access/unlock levels for any controller in vehicles:

Unlock level 01 – makes security access to level one

Functions/routines: request seed ECU unlock (27 01)/send key ECU unlock (27 02)

This is used in most ecu’s till Emission EU6 for general ECU Unlock for doing Variant coding, Adaption…

Unlock level 03 – makes security access to level three

Functions/routines: request seed ECU unlock lev3 (27 03)/send key ECU unlock lev3 (27 04)

Functions/routines: request seed adjustment (27 03)/ send key adjustment (27 04)

This is used in most ECU’s to unlock adaption values like IMA/ISA, DPF/SCR/AGR /MAF values…

Unlock level 05 – makes security access to level five

Functions/routines: request seed reprogramming (27 05)/send key reprogramming (27 06)

This is used to unlock the ECU for reflash/reprogramming it – attention – before ECU’s can give a seed for this functions

Unlock level 9A – makes security access to level 9

Functions/routines: request Seed 9A (27 09)/send key 9A (27 0A)

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Functions/routines: request seed Unlock (27 09)/ send key unlock (27 0A)

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This is used as general Ecu unlock in newer ECU’s emission standard EU6 onwards. Mostly needs to be done first followed by another unlock for according special function.

Unlock level BC – makes security access level BC

Functions/routines: request seed BC (27 0B)/send key BC (27 0C)

Functions/routines: request seed Variant coding (27 0B)/send key Variant coding (27 0C)

Is used in newer ECU’s emission EU6 onwards to unlock Variant coding

These are the most common and used levels – different controllers may have different access levels, but working in same manner, also the output seed can have different length.

The software works with a USB dongle and the computer must have an Internet connection. This includes 10 Seed-Key calculations each day for 1 year. After the end of the year, a subscription will be paid for each subsequent year. We release new updates very often and all our software have automatic updates. Thus you can be sure you are always using the latest version of the app.

SKGT Main packa

Seed Key Generator Mhhauto