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Old 11-19-2021, 03:50 PM   #61
jhowell
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Posts: 7,105
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Join Date: Nov 2011
Location: Charlottesville, VA
Device: Kindles
Quote:
Originally Posted by Leseratte_10 View Post
YI am using the decryption code from the DeDRM plugin to decrypt that and the decrypted form did work (so the first 16 bytes probably aren't that important), but this might explain some other oddities I ran into. I will try decrypting that with the first 16 bytes of the fingerprint instead and see what that results in. The fingerprint is stored unencrypted in the registry so it should be easy to add that.
The privateLicenseKey contains a RSA 1024-bit private key. It is in PKCS #8 format, which in this case is actually a wrapper around the actual key in PKCS #1 format. When correctly decoded the first two bytes should always be 30 82.

Last edited by jhowell; 11-19-2021 at 04:17 PM. Reason: add links
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