#1
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RSA Public Key format
I dumped the license and the public key from an embaded device.
I'm 100% sure, that the license is signed with 1024 bits key, because the signature is 128 bytes length... The public key is stored in a binary file (publickey.bin) but is 256 byte long and I can not identify in what format is stored. I played many combinations with openssl (DER/PEM format, different crypto algos), but I can't produce the 256 bytes binary storage size for a 1024bits key. Mabye somebody know any format to store 1024 bits binary Modulus in 256 bytes? The dumped public key is: Code:
... Last edited by leader; 01-11-2018 at 01:20. |
#2
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I succesfully reversed how the public modulus is stored in the binary file.
So I have the solution, the topic can be closed |
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