How to programmatically get the sidecar "suffix"?

gesundheit · 10-26-2021, 03:20 AM

For Kindle sidecar files

(for example)

Code:

Hacker's Delight3c7b9ac0fd5a4d129d479c792bffa487.azw3r

there's a hyphen-less UUID appended to each filename. I've read on the forums that this string is determined by the currently active Amazon account. Is there a way to programatically get the right UUID string for the currently active account?

jhowell · 10-26-2021, 12:12 PM

It is the hex equivalent of the md5 hash of the Amazon customer ID.

gesundheit · 10-26-2021, 10:44 PM

What is Amazon customer ID? It's not my email address, and it's not amzn1.account.AF6RHO7KZU5XRVQJGXK6HB56KR2A or AF6RHO7KZU5XRVQJGXK6HB56KR2A (or any lower/uppercase versions) (ID changed for privacy). Is the hash salted?

jhowell · 10-26-2021, 11:22 PM

It is the string starting with “amzn1.account”. It is a regular md5 hash.

For the account you gave the hash would be ed85e5812a197f9ee6d5579681ad8f9b.

I don't know what is used if the Kindle is unregistered. The hex string is omitted if the device is unregistered.

mergen3107 · 10-29-2021, 12:44 PM

Yes, this is the account ID. I’ll look it up in my notes, I remember getting it a long time ago on Kindle 4

mergen3107 · 10-29-2021, 12:46 PM

IIRC it is stored in a file somewhere in /var/local/

gesundheit · 10-29-2021, 11:38 PM

Thank you both, I've got it now. It's in /var/local/token/

mergen3107 · 10-30-2021, 06:28 AM

Yay, my long term memory works

10-26-2021, 03:20 AM	#1
gesundheit Member Posts: 16 Karma: 10 Join Date: Sep 2021 Device: Kindle PW5 SE (2021)	How to programmatically get the sidecar "suffix"? For Kindle sidecar files (for example) Code: Hacker's Delight3c7b9ac0fd5a4d129d479c792bffa487.azw3r there's a hyphen-less UUID appended to each filename. I've read on the forums that this string is determined by the currently active Amazon account. Is there a way to programatically get the right UUID string for the currently active account?

10-26-2021, 11:22 PM	#4
jhowell Grand Sorcerer Posts: 7,162 Karma: 92500001 Join Date: Nov 2011 Location: Charlottesville, VA Device: Kindles	It is the string starting with “amzn1.account”. It is a regular md5 hash. For the account you gave the hash would be ed85e5812a197f9ee6d5579681ad8f9b. I don't know what is used if the Kindle is unregistered. The hex string is omitted if the device is unregistered. Last edited by jhowell; 10-27-2021 at 09:12 AM.

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10-26-2021, 12:12 PM	#2
jhowell Grand Sorcerer Posts: 7,162 Karma: 92500001 Join Date: Nov 2011 Location: Charlottesville, VA Device: Kindles	It is the hex equivalent of the md5 hash of the Amazon customer ID.

10-26-2021, 10:44 PM	#3
gesundheit Member Posts: 16 Karma: 10 Join Date: Sep 2021 Device: Kindle PW5 SE (2021)	What is Amazon customer ID? It's not my email address, and it's not amzn1.account.AF6RHO7KZU5XRVQJGXK6HB56KR2A or AF6RHO7KZU5XRVQJGXK6HB56KR2A (or any lower/uppercase versions) (ID changed for privacy). Is the hash salted?

10-29-2021, 12:44 PM	#5
mergen3107 Wizard Posts: 1,557 Karma: 5000046 Join Date: Feb 2012 Location: Cape Canaveral Device: Kindle Scribe	Yes, this is the account ID. I’ll look it up in my notes, I remember getting it a long time ago on Kindle 4

10-29-2021, 12:46 PM	#6
mergen3107 Wizard Posts: 1,557 Karma: 5000046 Join Date: Feb 2012 Location: Cape Canaveral Device: Kindle Scribe	IIRC it is stored in a file somewhere in /var/local/

10-29-2021, 11:38 PM	#7
gesundheit Member Posts: 16 Karma: 10 Join Date: Sep 2021 Device: Kindle PW5 SE (2021)	Thank you both, I've got it now. It's in /var/local/token/

10-30-2021, 06:28 AM	#8
mergen3107 Wizard Posts: 1,557 Karma: 5000046 Join Date: Feb 2012 Location: Cape Canaveral Device: Kindle Scribe	Yay, my long term memory works

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