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martyjelen
 Post subject: Sandisk Extreme 128GB LDPC?
PostPosted: April 15th, 2024, 3:56 
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Joined: January 23rd, 2024, 5:38
Posts: 27
Location: Czech republic
Hello, does anybody know if this SD card use LDPC ? I don't have pinout for this so I wonder if it's worth to find the correct one.

Thank you


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melvin
 Post subject: Re: Sandisk Extreme 128GB LDPC?
PostPosted: April 15th, 2024, 5:59 
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Joined: September 16th, 2015, 9:06
Posts: 353
Location: Poland
Most probably it is. Can you upload a better photo where all the lines are visible?

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martyjelen
 Post subject: Re: Sandisk Extreme 128GB LDPC?
PostPosted: April 15th, 2024, 6:20 
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Joined: January 23rd, 2024, 5:38
Posts: 27
Location: Czech republic
melvin wrote:
Most probably it is. Can you upload a better photo where all the lines are visible?


Sure, here it is.


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melvin
 Post subject: Re: Sandisk Extreme 128GB LDPC?
PostPosted: April 15th, 2024, 6:23 
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Location: Poland
Yes this is LDPC.

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martyjelen
 Post subject: Re: Sandisk Extreme 128GB LDPC?
PostPosted: April 15th, 2024, 6:30 
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Joined: January 23rd, 2024, 5:38
Posts: 27
Location: Czech republic
melvin wrote:
Yes this is LDPC.


OK, thank you very much for saving my time.
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arvika
 Post subject: Re: Sandisk Extreme 128GB LDPC?
PostPosted: April 15th, 2024, 6:36 
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Joined: October 24th, 2009, 15:22
Posts: 922
Location: Poland
martyjelen, you can check such cases at future at my database: https://www.flash-killer.com/monolith-database

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Flash Killer - everyday new resources (pinout, XOR, ECC,config) for flash devices
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martyjelen
 Post subject: Re: Sandisk Extreme 128GB LDPC?
PostPosted: April 15th, 2024, 7:11 
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Joined: January 23rd, 2024, 5:38
Posts: 27
Location: Czech republic
arvika wrote:
martyjelen, you can check such cases at future at my database: https://www.flash-killer.com/monolith-database

Thank you.
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sourcerer
 Post subject: Re: Sandisk Extreme 128GB LDPC?
PostPosted: April 15th, 2024, 8:52 
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Joined: August 13th, 2016, 17:10
Posts: 205
Location: Vienna, Austria
According to my research the SanDisk Extreme is using LDPC, but the actual problem with it from my point of view is the encryption that the controller is using, not so much LDPC.
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sourcerer
 Post subject: Re: Sandisk Extreme 128GB LDPC?
PostPosted: April 15th, 2024, 8:53 
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Joined: August 13th, 2016, 17:10
Posts: 205
Location: Vienna, Austria
Here is my table for the LDPC and other ECC of the various controllers and flash media: https://docs.google.com/spreadsheets/d/ ... edit#gid=0
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martyjelen
 Post subject: Re: Sandisk Extreme 128GB LDPC?
PostPosted: April 15th, 2024, 9:02 
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Joined: January 23rd, 2024, 5:38
Posts: 27
Location: Czech republic
sourcerer wrote:
According to my research the SanDisk Extreme is using LDPC, but the actual problem with it from my point of view is the encryption that the controller is using, not so much LDPC.


Thanks. How can I check if SD card controller using encryption?
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sourcerer
 Post subject: Re: Sandisk Extreme 128GB LDPC?
PostPosted: April 15th, 2024, 10:45 
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Joined: August 13th, 2016, 17:10
Posts: 205
Location: Vienna, Austria
I case you have a donor and the pinout you can use my initpattern tool to write XOR patterns on it, then you can dump it, and then you can use xorsearch to try to find the XOR patterns. If xorsearch doesn't find any patterns then it uses some kind of encryption. Another method I have been using it to read through the datasheet, some datasheets mention AES or AES-XTS encryption.
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arvika
 Post subject: Re: Sandisk Extreme 128GB LDPC?
PostPosted: April 15th, 2024, 11:37 
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Joined: October 24th, 2009, 15:22
Posts: 922
Location: Poland
LDPC not will be such big game changer as everyone thinks, because a lot of cases with LDPC used encryption :(
I hope algo will be cracked, so it give some % more solved cases. But not 100%, more likely 20-30%, based on current statistics. But of course I can be wrong.

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Arch Stanton
 Post subject: Re: Sandisk Extreme 128GB LDPC?
PostPosted: April 15th, 2024, 18:15 
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Joined: May 13th, 2019, 7:50
Posts: 1162
Location: Nederland
arvika wrote:
LDPC not will be such big game changer as everyone thinks, because a lot of cases with LDPC used encryption :(
I hope algo will be cracked, so it give some % more solved cases. But not 100%, more likely 20-30%, based on current statistics. But of course I can be wrong.


I was already wondering about this. Thanks for sharing your thoughts on this.

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Arch Stanton
 Post subject: Re: Sandisk Extreme 128GB LDPC?
PostPosted: April 15th, 2024, 18:16 
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Joined: May 13th, 2019, 7:50
Posts: 1162
Location: Nederland
sourcerer wrote:
Here is my table for the LDPC and other ECC of the various controllers and flash media: https://docs.google.com/spreadsheets/d/ ... edit#gid=0


merci beaucoup!

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