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04-07-2016, 20:47 | #1 (permalink) |
Freak Poster Join Date: Mar 2012 Location: International
Posts: 449
Member: 1728527 Status: Offline Sonork: 100.1668555 Thanks Meter: 67 | Samsung CERT File Edit or Generate as per Our IMEI its Some Encrypted Code - And Some Hashes Can We Decrypt it ? or can We Create Our Own CERT Files by using Any Generator or AT Commands ...? Can Anyone Tell me Which Type Of Encryption Used in CERT Files ? Code: ;BST Samsung CERT file ;Please do not edit this file [Cert] Model=SM-A500F IMEI=356317062038144 SerNo=00000000000 KeyID=0756 ImeiSign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ubKey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ubKeySign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|
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04-11-2016, 06:15 | #2 (permalink) | |
Junior Member Join Date: Mar 2011
Posts: 34
Member: 1535147 Status: Offline Thanks Meter: 7 | before i have made thread, nobody replied. if looks below part Quote:
for verifying using Pubkey,before verfy the imei pubkey will verify first. if not wrong. but must know what algorithm used. if somebody know.. which part inside the firmware will check the certificate, make easier to analyze. | |
04-13-2016, 21:35 | #6 (permalink) |
Moderator Join Date: Jun 1999 Location: Serbia Age: 48
Posts: 8,206
Member: 163 Status: Offline Thanks Meter: 7,784 | There is no any secret, it's simple cryptography, cert files are signed with PRIVATE keys, which only FACTORY HAVE. You or anyone else don't have them, and CAN NOT create cert files without it. Phone hardware check cert via public key decrypting, and if matches, security is ok, imei ok, network ok, all ok. b.r. Alex
__________________ Always press THANKS button if my post was helpful! Please DO NOT send me PM's for help, You can ask for help on forum Do not post THANKS posts - use thanks button ! ALWAYS use SEARCH button before posting! |
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04-13-2016, 22:50 | #7 (permalink) | |
Junior Member Join Date: Sep 2015
Posts: 23
Member: 2453951 Status: Offline Sonork: tego101 Thanks Meter: 4 | Quote:
Sent from my SM-N920W8 using Tapatalk | |
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04-16-2016, 10:15 | #8 (permalink) | |
No Life Poster Join Date: Apr 2006 Location: APPLE i Center Age: 39
Posts: 1,751
Member: 264667 Status: Offline Sonork: 100.105892 Thanks Meter: 481 | Quote:
after that BB5 rpl was generating impossible. if so some team work hard they can break Samsung cert security | |
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04-17-2016, 00:53 | #9 (permalink) | |
Freak Poster Join Date: Mar 2005 Location: Europe Age: 44
Posts: 349
Member: 126827 Status: Offline Sonork: 100.70299 Thanks Meter: 60 | Quote:
Samsung crt is RSA thing, maybe after 10 years, who knows | |
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04-19-2016, 20:06 | #10 (permalink) |
Junior Member Join Date: Jan 2007
Posts: 15
Member: 430912 Status: Offline Thanks Meter: 3 | Imei Cert Is RSA 512 in theory if it is possible to generate the certificates. PrivKey, it generates pubkey For pubkey decrypts the message PrivKey generate the PubKey Internet HTTPS: User: MSG + PubKey = MSGencrypt Server: MSGencrypt + PrivKey = MSG Samsung Mobile : Imei = ImeiSing + PubKey Samsung: ImeiSing = Imei + PrivKey It looks like can be used to encrypt both to decrypt the PrivKey, but only PrivKey Encrypts and decrypts the message and pubkey if encrypts, decrypts and not vice versa. |
04-25-2016, 20:06 | #11 (permalink) |
Junior Member Join Date: Mar 2011
Posts: 34
Member: 1535147 Status: Offline Thanks Meter: 7 | Based on firmware, there is Boot,System,recovery, etc.. if somebody know. where is block of memory will keep the certificate on phone ? i thinks the certificate will be verify first when boot up. |
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04-28-2016, 06:15 | #12 (permalink) | |
Moderator Join Date: May 1999 Location: Blagoevgrad, Bulgaria Age: 52
Posts: 1,056
Member: 73 Status: Offline Thanks Meter: 537 | Absolutely wrong! Imei cert is rsa 2048. And if we see in theory RSA key components: 1. Full pack key is: - PRIVATE EXPONENT - named D - PUBLIC EXPONENT - named E - MODULUS - named N this is also know as PRIVATE KEY. 2. PUBLIC KEY: - PUBLIC EXPONENT - E - MODULUS - N (same as private) In RSA you can ENCRYPT also with PUBLIC KEY but this message is possible to be decrypted only with PRIVATE KEY. If ENCRYPT with PRIVATE KEY this msg can be decrypted from PUBLIC and from PRIVATE KEY. Quote:
__________________ You'll die as you lived in a flash of the blade, in a corner forgotten by no one You lived for the touch for the feel of the steel One man, and his honor. | |
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04-28-2016, 06:18 | #13 (permalink) |
Moderator Join Date: May 1999 Location: Blagoevgrad, Bulgaria Age: 52
Posts: 1,056
Member: 73 Status: Offline Thanks Meter: 537 | "block of memory will keep the certificate on phone " - In nvdata.bin very well CRYPTED with SYMETRIC ALGORITHM and key is based to HARDWARE_ID on phone.
__________________ You'll die as you lived in a flash of the blade, in a corner forgotten by no one You lived for the touch for the feel of the steel One man, and his honor. |
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05-01-2016, 10:00 | #14 (permalink) | |
Freak Poster Join Date: Oct 2013
Posts: 134
Member: 2037770 Status: Offline Thanks Meter: 114 | Quote:
a Super PC ? i can afford it. a Super Net? already Have it. maybe it needs more digging around. i can't believing there is no one can crack this code, the makers was humans and i bet the crackers will be. | |
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05-01-2016, 18:19 | #15 (permalink) |
Moderator Join Date: May 1999 Location: Blagoevgrad, Bulgaria Age: 52
Posts: 1,056
Member: 73 Status: Offline Thanks Meter: 537 | Don't act as ***! World not finish with 1,2,3,5,..10 video cards. This is rsa 2048 bit. 768 bit key is factored for 4 years with 2 university clusters 400 machines each. Yes rsa is made by humans but will be cracked from humans? If want crack this crack Samsung vpn and stole key.
__________________ You'll die as you lived in a flash of the blade, in a corner forgotten by no one You lived for the touch for the feel of the steel One man, and his honor. |
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