yashsingh1/xdaforums huggingface dataset:
[Samsung Galaxy S20 / S20+ / S20 Ultra Questions & ] adfree:
If I search for text string:

DRK_V2

Then I can find...

GW4 older Firmware

d:\GW4_****\Firmware\superResut1\vendor\lib\libdk_vnd_service_core.so
d:\GW4_****\Firmware\superResut1\vendor\tee\00000000-0000-0000-0000-000000534b4d
d:\GW4_****\Firmware\superResut1\system\system\framework\framework.jar
d:\GW4_****\Firmware\superResut1\system\system\app\SamsungPayForGear\SamsungPayForGear.apk

SM-G960F search

d:\GW4_****\2023\G960\extracted\x\image\app\mcRegistry\ffffffff00000000000000000000000d.tlbin
d:\GW4_****\2023\G960\extracted\x\image1\framework\oat\arm64\services.vdex
d:\GW4_****\2023\G960\extracted\x\image1\lib64\libdevkwcmd.so

SM-G970U search

d:\GW4_****\2023\G970\extractedG970U\extracted\x\image\system\framework\oat\arm64\services.vdex
d:\GW4_****\2023\G970\extractedG970U\extracted\x\image\system\lib\libdk_native.so
d:\GW4_****\2023\G970\extractedG970U\extracted\x\image\system\lib64\libdevkwcmd.so
d:\GW4_****\2023\G970\extractedG970U\extracted\x\image\system\lib64\libdk_native.so

SM-A202F search

d:\GW4_****\ddDumps\dddump_smA202F\extract\Partition25.bin
d:\GW4_****\ddDumps\dddump_smA202F\extract\Partition26.bin
d:\GW4_****\ddDumps\dddump_smA202F\extract\Partition4.bin
d:\GW4_****\ddDumps\dddump_smA202F\extract\Partition 3.bin
d:\GW4_****\ddDumps\dddump_smA202F\extract\Partition25\system\framework\framework.jar
d:\GW4_****\ddDumps\dddump_smA202F\extract\Partition26\lib64\libdk_vnd_service_core.so
d:\GW4_****\ddDumps\dddump_smA202F\extract\Partition26\tee\00000000-0000-0000-0000-000000534b4d

GW5 FACtory Firmware aka Combination firmware

d:\GW4_****\Combination_Firm_GW4\GW5\extracted\x\system\system\framework\framework.jar
d:\GW4_****\Combination_Firm_GW4\GW5\extracted\x\vendor\lib\libdk_vnd_service_core.so
d:\GW4_****\Combination_Firm_GW4\GW5\extracted\x\vendor\tee\00000000-0000-0000-0000-000000534b4d
[Samsung Galaxy S20 / S20+ / S20 Ultra Questions & ] adfree:
1 stupid idea for this year 2023...

To use openssl to create "few" ""keys""...

Something like this...

openssl genrsa 2048 > lotto.key

openssl rsa -in lotto.key -noout -text > lottoplain.txt

For Windows...

openssl.exe genrsa 2048 > lotto.key

openssl.exe rsa -in lotto.key -noout -text > lottoplain.txt

As Windows Fanboy will make Batch file...

Idea as I have "few" public Modulus...

Maybe after "few" attempts on "few" different Computers...

Best Regards
[Samsung Galaxy S20 / S20+ / S20 Ultra Questions & ] adfree:
First attempt...

Created with help of Excel ... Batch file for 1000 openssl Commands...

= 1000 files

Inside is openssl from S..L.. for Windows...

Feel free to use any other "trusted" openssl you can find...

Batch *.bat is text file... so you can check what is inside...

Later I need to make Batch for convert into human readable text... to check for Modulus I wish to find...

For now I will run this Batch "few" times on different Computers... different time...

No idea how random is random...

Maybe if I can not find holy grail... then maybe I learn little bit... if maybe few files are 1:1 same...

Best Regards

Edit 1.

first 1000 files done.. but not converted into plain text...

But found via Google this Tool to find duplicates... Anti-Twin:

Anti-Twin Download

Kostenloser Download von Anti-Twin, dem beliebten Programm zur Duplikatssuche

www.aidex.de

Edit 2.

first use with Anti-Twin found no duplicates in these 1000 files...

Okidoki...

Will run the Batch 4 more times... so I have then 5000 files on this Computer...

Not checked if this Base64 encoded stuff have additional data... later I will compare...
[Samsung Galaxy S20 / S20+ / S20 Ultra Questions & ] adfree:
A

At the moment this looks interesting to me as Search String Hex... in case of RSA keys

308204A302010002820101

B

In my first 5000 key pairs Base64 encoded no Duplicate found with Anti-Twin Tool...

C

This Base64 result is not really cool for my project... so still need better Command or convert...

D

Attached is 1 idea to generate 5000 RSA key pairs... no idea why del Command for openssl.exe not work...

E

Attached 10000 key files... from 2 Computers... 5000 Computer 1... 5000 Computer 2...

Maybe we can make something like "Rainbow" table or Dictionary bla bla...

IMHO few more Certs with RSA 2048... :alien: :love:

Best Regards

Edit 1.

Hmmm.... not found better way... so I need 2 steps... for HEX instead Base64 encoded...

openssl.exe genrsa 2048 > lotto.key

openssl rsa -in lotto.key -RSAPublicKey_out -outform DER >pubkeyHEX.bin

Okidoki... will make Batch for 1000 files...
[Samsung Galaxy S20 / S20+ / S20 Ultra Questions & ] adfree:
Here steady.bin example from GW4...

A

It is taken via dd from 4 MB steady partition...

B

It looks like Samsung has Copy and Paste Protection... because Cert Signature is invalid...

In other dumps I saw 2 Byte missing... not sure if here same... or more crippled in last 256 Byte RSA 2048 Signature...

C

Seems """Factory Token"""... I see something like this:

Device Manufacturing

D

Some humanreadable Base64 results...

EXT:01
/client:01:01,
com.samsung.android.aircommandmanager:1000:pSig,

EXT:01
/client:01:01,
com.samsung.android.daseulrfalt:1000:pSig,

EXT:01
/client:01:01,
com.bps.ondevicebps:1000:pSig,

EXT:01
/client:01:01,
com.sec.factory:1000:pSig,

ALLOW_SCAN2DRAM_EXT

E

Forgotten...

Best Regards

Edit 1.

Here how it looks like on GW4 LTE... in DL Mode... aka Odin Mode...

Edit 2.

My dream pet name... attached somewhere earlier... for this public Cert...

0_Cert_CA_Samsung_v1.cer

Found as file... Sam.ung names...

rootca.der

SamsungDeviceRootCAKey_RSA2048.der

SamsungDeviceRootCAKey_RSA_2048.der

About my dd dump steady.bin from GW4...

I realized my mistake... not 2 Bytes wrong or missing...

More then 270 Bytes removed...

Easy visual test... Certs ends with some http text strings...

Then complete 256 Byte RSA 2048 Signature cutted...

project for this year...

?

SA_server.p12

SA_vault.keystore

?
[Samsung Galaxy S20 / S20+ / S20 Ultra Questions & ] adfree:
Ouch... tried 2 times with free tool to "find" password of:

SA_server.p12

Attempt 1 on Win 7 PC.. stopped after 5 days or so... 5 Chars...

Second attempt on Win 11 Notebook... few "minutes" longer...

Seems 5 Chars... not bypassed...

Ouch...

Will try later to understand who was faster... PC or Notebook...

Ouch...

Name of free tool is:

CertificatePasswordRecovery.zip

Attached are my 2 Log Files from 2 ComputerS...

Ouch...

Maximum Chars to hack possible with this tool are 25... ouch...

I have no idea about speed of commercial Pro Tools like from Elcomsoft...

Or Hardware accellerated Stuff... ouch...

Only as info...

It is not sooooo hard. As I managed in other way to use Combination Firmware on my SM-R875F...

Best Regards

Edit 1.

Attempt 1 on Computer 1

ca 4 days...

Attempt 2 on Computer 2

ca 16 dayS...

:poop:
[Samsung Galaxy S20 / S20+ / S20 Ultra Questions & ] goofwear:
I'm following this thread and like the progress and info. Keep it up and let me know if you need help with something.
[Samsung Galaxy S20 / S20+ / S20 Ultra Questions & ] iBowToAndroid:
Well, what kind of help can you offer?
[Samsung Galaxy S20 / S20+ / S20 Ultra Questions & ] goofwear:
If you need to me run anything on a pc for example I could help us John the ripper https://www.openwall.com/john/ to try help crack the hash or key you are looking for. this is a legitime free programs and it works for windows and Linux too.

If you want to chat, talk or ask questions let me know.
[Samsung Galaxy S20 / S20+ / S20 Ultra Questions & ] :
Where did you get `SA_server.p12` from?
[Samsung Galaxy S20 / S20+ / S20 Ultra Questions & ] adfree:
@_guru_​

I wrote you few dayS ago Conversation aka Private message... few seconds ago tried second time...

@goofwear​

I will contact you via Conversation... soon.

Summary of today.

First I replaced Cert inside steady as i thought it is damaged/incomplete...

But my SM-R875F shows me this Error:

0xf0100014

/* EM_CRYPTO_VERIFY_CERT */

#define EM_ERR_EM_CRYPTO_VERIFY_CERT_SERVER_CERT 0xF0100014

unmodified Original GW4 dumped steady shows this:

0xf0220010

/* EM_CRYPTO_VERIFY_CERT */

#define EM_ERR_EM_TOKEN_VERIFY_DID 0xF0220010

Then I insert my DID and got this Error:

0xf0110015

/* EM_CRYPTO_VERIFY_CERT */

#define EM_ERR_EM_CRYPTO_VERIFY_SIGN_NOT_MATCH_SIGN 0xF0110015

Best Regards

Edit 1.

Sorry, I am the Id i o t...

Did mistake by cutting Server Cert from dumped steady... few times

So wrong conclusion from wrong cutting...

Edit 2.

Will do some exercise with this...

GitHub - RsaCtfTool/RsaCtfTool: RSA attack tool (mainly for ctf) - retrieve private key from weak public key and/or uncipher data

RSA attack tool (mainly for ctf) - retrieve private key from weak public key and/or uncipher data - RsaCtfTool/RsaCtfTool

github.com

Edit 3.

GitHub - ZeroBone/PollardRsaCracker: RSA cracking algorithm based on Pollard factorization (Pollard's p-1 method).

RSA cracking algorithm based on Pollard factorization (Pollard's p-1 method). - ZeroBone/PollardRsaCracker

github.com
[Samsung Galaxy S20 / S20+ / S20 Ultra Questions & ] goofwear:
I just stumbled across this from Cert Polska they are a Computer Emergency Response Team. They created this tool to try and brute force rsa keys for people who got hit with some ransomware. I wounder if we could re write any of this to try and help with your project.

GitHub - CERT-Polska/phobos-cuda-decryptor-poc

Contribute to CERT-Polska/phobos-cuda-decryptor-poc development by creating an account on GitHub.

github.com
[Samsung Galaxy S20 / S20+ / S20 Ultra Questions & ] :
I commend the work you've done on this. I figured I should share some of my findings since people were kind enough to share steady.bin

Basically the steady.bin is the EM_TOKEN.

The token contains various sections outlining config options for the device such as ENG mode stuff. The full capabilities of what the token can enable are unclear but you can look up some em_token tools to get an idea.

This whole token has a section called INTE (for integrity). This section contains 2 parts:

* A signed signature of the entire token

* A signed "device" certificate that was used to sign and create the above signature. This certificate must be signed by an authority key. This is checked via a hardcoded public key in the bootloader during checking steady.bin

Unfortunately the ONLY way you can create a valid EM_TOKEN is to have the capability to generate a signed device certificate. This cert is trusted by Samsung via the public key in the bootloader. As far as i know the only way to get said device certificate is to have an official Samsung signing server provide it for you.

These EM_TOKEN services that people pay for likely have some rouge employees that have logins for the signing server. It's not uncommon is some parts of the world. These workers may not be paid well by Samsung so a side hustle can be worth it.

Without the valid device certificate you will not be able to modify the EM_TOKEN. As you have noticed in your research: the device certificate will contain extended X509 options for stuff like "DRK" and base64 encoded info about the device.

Unless someone gains access to the signing server to generate device certs for us, or leaks the private key associated with the public key in the bootloader, there's no path forward.

NOTE: the validation process is a bit fuzzy. This is from memory. If anyone wants confirmation i will have to dig out my Ida .idb and check it again
[Samsung Galaxy S20 / S20+ / S20 Ultra Questions & ] adfree:
Meanwhile I corrected my mistake...

And now I have 3 EngineeringMode Certs...

As example here is the Server Cert from dd dumped GW4 steady.bin

Full steady.bin is here:

https://xdaforums.com/t/looking-for-emtoken-example.4312891/page-3#post-87988813

Main Difference to the older example... simple look for text string:

EngineeringMode

You can not use other Certs...

public key aka Modulus of this RSA 2048 Cert

B2A1A12EBB97113E95CB3FE2F1D280C89B1E5A0580E63FD24E30CE1746510AC91D6856B7B6CE0B6FF2AEC260B94DA5FC9C95BC7F50A16A112A8F4238CFD709905471331F63EAA16D7B6BEBCF0C8C59B952FE5893A017A854FA4823400962DC9AE81268C22A5C9AA3E819FBFC8E9C6EE44C648B6556FB3AD63CD53AC1A8C70924419ADF47EA271620DC01DA592D99D08DA7013F66AA39876A274721597490095DD1442F1A0FD7BDF61B35AEE406D3BD228E8BFFACD43E7435C161DE96784BFE52FE3AF1FAB62F072C8D8BFA7C20D4EBC489DE482A6EA786565BB5E5AF9D2D19B967E1B75F7D2EBAFEBAE63A9E556AFA47ABF8426DAA8ACF6D993C9C6648E1D3B1

256 Byte...

Best Regards
[Samsung Galaxy S20 / S20+ / S20 Ultra Questions & ] adfree:
Stupid Question...

Anybody knows Samsung Phone who shows Error Codes like this?

If eToken fail?

Photo is from my SM-R875F connected via USB cable... and Odin...

This is is not visible if i use the normal way over the air and netOdin...

For instance my SM-A202F shows nothing... on Display... if I play with eToken.

Best Regards
[Samsung Galaxy S20 / S20+ / S20 Ultra Questions & ] adfree:
For my tiny brain i will try to use my knowledge from 2008:

GSM-Forum - View Single Post - BREW Signature and Certificates

Post 3456615 - Welcome to gsm-forum, here you find all infos about android, windows mobiles, iphones, flashing, repair, unlocking, root, development software, firmwares.

forum.gsmhosting.com

I will try to summary and few of my baby theories... about RSA...

I will try to use RSA 31 for smaller example(s)...

Edit 1.

Oh... my Tool allows lower then RSA 31...
[Samsung Galaxy S20 / S20+ / S20 Ultra Questions & ] adfree:
Memo to me...

Identification of Version by "text string"

Here from SM-G970U in Qualcomm NON-HLOS.bin

EngineeringMode20

Not so easy in Exynos sboot.bin... with my blind eyes...

Edit 1.

Ah, maybe via other files from Firmware... here from SM-G960F

ffffffff000000000000000000000070.tlbin
[Samsung Galaxy S20 / S20+ / S20 Ultra Questions & ] adfree:
Tiny progress...

I have now 1 Cert... inside this DRK Chain...

+ private Exponent :alien:

Maybe this helps with older steady... like our examples with SM-G960F... SM-G970U...

Need some time to check...

I have only SM-A202F... maybe this supports the old steady...

Results later...

Best Regards
[Samsung Galaxy S20 / S20+ / S20 Ultra Questions & ] adfree:
Need some infos about Phones... which can display Error Codes...

My SM-A202F shows only this text:

TOKEN unique is invalid

User with SM-A015F showed me photo... after this text...

-11

Unknown Phone... No idea which Model Name... shows full error Code.

About DID...

My SM-A202F have only 12 Byte instead 16 Byte...

Best Regards

Edit 1.

Photo could be from SM-G988U... So IMHO S20 Ultra shows full error Code

Edit 2.

-11 could mean this:

// Error codes.
#define EM_NO_ERROR 0
#define EM_INTERNAL_ERROR -1
#define EM_PERMISSION_ERROR -2
#define EM_NOT_SUPPORT_MODE -3
#define EM_NOT_ALLOW_MODE -4
#define EM_INVAILD_INPUT -5
#define EM_INVAILD_STORED_TOKEN -6
#define EM_INVAILD_OTA_TOKEN -7
#define EM_NOT_SUPPORT_VER -8
#define EM_NOT_SUPPORT_CERT_NUM -9
#define EM_OPENSSL_ERROR -10
#define EM_WRITE_TOKEN_ERROR -11
#define EM_READ_TOKEN_ERROR -12
[Samsung Galaxy S20 / S20+ / S20 Ultra Questions & ] adfree:
Samsung S6 FACTORY Bootloader Unlocker apk and source

Got a hold of the Samsung CROM Service apk that unlocks the S6 SM-G9250 bootloader and I've decompiled it, I'll be honest, it's been years since I've looked at this stuff. The file is distributed by Samsung for the Chinese market It's been...

xdaforums.com

Only as info...

Root CA is created in 2013...

This Thread shows activity since S6... in 2015...

Best Regards
[Samsung Galaxy S20 / S20+ / S20 Ultra Questions & ] adfree:
With Kiwibird Cert...

Meanwhile I have 2 Certs with private exponent for older steady.bin...

Only as info.

Best Regards
[Samsung Galaxy S20 / S20+ / S20 Ultra Questions & ] adfree:
Please need help.

For tiny experiment I need Tool or script to create big Prime Numbers in HEX...

128 Byte lengths

The idea is BETWEEN:

A000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000

and maximum 128 Byte lengths "content":

FFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFF

And store result in file... would be perfect...

I have "few" Tools to this by stupid clicling... and random... but I need ALL primes...

Example for few big Primes in this "dream area":

F06E83B71E1565AC17274E245771A672347AE49AE1CAA25BDB06C0F3B172DE442BB55B0AB813D363D99C4A748F382299668EE49A3AC599E1927E50ADB64EA4AFFDBF6509839B7E1ABFAF367CE77A0D07869B6A90DC8A097B899D25BF78AB52B67BA47DCDE1386C407898D969AF7E19B87CDB031831CA500D77E44641C9D31967

F32C5F9E36BE948AEB8F387ACD4630FFBF31593A2CE2384338FBE2A592A36E1A529B82BF48707D10E2130DD6784E9A7D4D021A8785ED03C0E4D0A880B27E0FA1ECB8D7D69C298521DB6B3DA5CBC2DB75F178B00C009CCC145030B46CC9402B793C768E7B1FCCF366A4FFB4880F3BB182A12F983941E32F4794FFA4111336FE3B

F3C0626C1B75DE0F323E11225E196A56B631438EDAC6E7156E5F8EFAF1EC426EFE713664F227C33445F73116E2932B1364738B08FCCB10B8CC29C21937CAF44934981EBC02CF27E749E27D9A22E6E02D252FA3538D3637F3681179CD865358AE047063A5A5D32FEAE8EAE7D7ABA809B652BFCAEC0BABE130797591F4CFC81689

F41597837785A0C83789CFDE0A1E05BC053C6328F6F435B4C6F9678640B42790DE6CE8C0467CDBB0A2D238B429DF66CFBA6DC8645283C4A27D3CD29C5E52B108ED97310648DB0962E6A1721AE50CD6FBB1C8DC018751B5A29A423C78D5CB9B2B61E6B00E44D931EDCE971D092450D7561E892DC6B4AB3099EBCC36EB12272FAF

FF933182932492BFB4928D3BED4496AEA9E89A254D6EE3E2D8741770CEDED7A1F5EA846E0BF30D7A191D60C086898D976B5A2547B7FD4F345502DD378068349569756AD6AD4C96B826D4CE966477D6A9E23582DEB7E050CCE3B858D92254F02AEBC7B0E7F57C46B1ED7DCBC43810E74626E72A520FD749BFB6D1FCA8D53EF9CF

Thanx in advance.

Best Regards
[Samsung Galaxy S20 / S20+ / S20 Ultra Questions & ] adfree:
I have NOT many device(s) at home for tests...

Photos from my SM-A202F Bootloader Version U3.

ENG and Custom Mode no idea yet... maybe better if Knox not 1...

But FACTORY BIN ALLOWED tested successfully by flashing different Combination Firmwares...

I have NO luck yet with my SM-G965F Bootloader Version UH aka 17

Tested also SH is also 17... but also no success...

I can not downgrade nor find Combination Firmware for BL Version 17... only 11 leaked...

Only as info of progress...

Best Regards
[Samsung Galaxy S20 / S20+ / S20 Ultra Questions & ] adfree:
SOS need help with SM-G965F Bootloader Version 17 SH/UH... noob questionS

Hello. Problem A I am tooo stupid to root SM-G965F proper to have WRITE access to. /system/priv-apps Problem B I have no idea if eToken/steady.bin Error #define EM_ERR_ABNORMAL_CORE 0xF0000027 If this Error F0000027 is because...

xdaforums.com

I am searching for Tester(s).

Helping me to solve my SM-G965F Problem...

#define EM_ERR_ABNORMAL_CORE 0xF0000027

Maybe somebody have still S9 Samsung. For stupid test(s)...

Bootloader Version is not important... it could be oldest or latest...

Thanx in advance.

Best Regards
[Samsung Galaxy S20 / S20+ / S20 Ultra Questions & ] noname9x:
@adfree : Why I could not find "INTE" in your N1test_v1 and N1test_v2 (The ones you sent me) ? Was it encrypted or something?
[Samsung Galaxy S20 / S20+ / S20 Ultra Questions & ] adfree:
@noname9x

ENGRES0001 have no INTE Text string...

This is the older Version...

No not encrypted... you can see adfree IMHO and other humanreadable text...

Best Regards
[Samsung Galaxy S20 / S20+ / S20 Ultra Questions & ] noname9x:
Interestingly, when I change "adfree" (HEX: 61 64 66 72 65 65) to "ddfree" (HEX: 64 64 66 72 65 65) and then flash with Odin. It just does not show anything on Download Mode. Like it was wiped out? I don't have rooted device to dd stready.bin afterwards and check. Do you have any idea?
[Samsung Galaxy S20 / S20+ / S20 Ultra Questions & ] noname9x:
@adfree : Also this older version does not have DRK thing? Like in other steady.bin from Google drive link in this thread.
[Samsung Galaxy S20 / S20+ / S20 Ultra Questions & ] adfree:
steady.bin is "secured" by RSA 2048... like many other things...

SHA 256 HASH is ENcrypted with RSA 2048 Private Exponent...

If you change 1 Byte... you change HASH...

To compute new SHA 256 is NO Rocket Science...

The part with put SHA 256 Value into RSA 2048 Signature... also no Rocket Science.

But you need the RSA 2048 keys... AND the Cert valid from DRK CHAIN...

Best Regards
[Samsung Galaxy S20 / S20+ / S20 Ultra Questions & ] adfree:
You know keybuster?

GitHub - shakevsky/keybuster

Contribute to shakevsky/keybuster development by creating an account on GitHub.

github.com

Funny example but i still not understand what they found...

2 keys RSA 4096... but from where for what?

I tried with my SM-G965F... aka S9...

Best Regards
[Samsung Galaxy S20 / S20+ / S20 Ultra Questions & ] noname9x:
@adfree: So how emToken are being generated/created for older security patch devices? Using program openssl + valid CERT + RSA2048 key + SHA256 ? And this all done with command-line tool or using some Hex Editor?
[Samsung Galaxy S20 / S20+ / S20 Ultra Questions & ] adfree:
I still need 1024 bit prime generator...

Maybe here:

Search results

The Python Package Index (PyPI) is a repository of software for the Python programming language.

pypi.org

Search results

The Python Package Index (PyPI) is a repository of software for the Python programming language.

pypi.org

Best example I found. But not for big primes...

I need few primes in range...

Mobilefish.com - Prime numbers generator and checker

Prime numbers generator and checker

www.mobilefish.com

Maybe somebody could help me.

Thanx in advance.

Best Regards
[Samsung Galaxy S20 / S20+ / S20 Ultra Questions & ] adfree:
Memo to me...

Hmmm....

If i do Square Root... Result is this:

EFDF31C5EF7CE7A0B3C0CEB55DF0707158ABF84F47C4E80A0771B0AEB164FBCB4EC268EE140A9228A003764B2F967812FD947B8602B0E692EFA6394387D1326A1A730DCE7A2288B56169743280B58FBE375E11DFAF2D8D5E7759C4261BA57200311BF6EEDEF0C9C3F1CCC1F2898B9232BB4A87B9E5EF7E1E6C6F462B777A56E3

If i look at my older post...

Maybe p and q are very close together...

Maybe Primes are inside this area... between:

E0C2000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000

and

EF00000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000

Hmmmmm...

Still dreaming...

Only as info.

Best Regards
[Samsung Galaxy S20 / S20+ / S20 Ultra Questions & ] adfree:
This is result of few RSA 2048 attempts with 64 bit Version of openssl...

Found in old Tizen crap SDK...

Maybe 2017 Version...

Before I used only 32 bit openssl under Windows...

64 bit Version is much faster...

Funny is...

Prime 1 starts ever with F...

And Prime 2 ever with E...

Only as Info...

Best regards
[Samsung Galaxy S20 / S20+ / S20 Ultra Questions & ] adfree:
Memo to me...

My SM-A505FN

adb shell getprop ro.em.version

[ro.em.version]: [20]

IMHO em Version 2 aka v2

Edit 1

My SM-A202F has em 1 (lite)

[ro.em.version]: [15]

Hmmm...

My SM-R875F shows this... I thought it is em 3...

[ro.em.version]: [25]