Hi all,
I was trying to decrypt the 018-5344-086.dmg with vfdecrypt and I don't succeed.
I'm trying it on a Windows 7 machine, I installed Cygwin, and I'm running this command:
vfdecrypt.exe -i 018-5344-086.dmg -o decrypted_fs.dmg -k B9CD10DD88AB615C1963E8AA04950B12DD64E0E5B11EA63C79 A02AF6DB62334C710D21DA

I get his as output:

Code:

keyDerivationAlgorithm      0
keyDerivationPRNGAlgorithm  0
keyDerivationIterationCount 0
keyDerivationSaltSize       0
keyDerivationSalt


blobEncryptionIVSize        0
blobEncryptionIV


blobEncryptionKeySizeInBits 0
blobEncryptionAlgorithm     0
blobEncryptionPadding       0
blobEncryptionMode          0
encryptedBlobSize           0
encryptedBlob



C:\Users\NAS\Desktop\aapl_FW>
C:\Users\NAS\Desktop\aapl_FW>

I get a decrypted.dmg file in the folder (297,804KB) but I can't open it with HFSExplorer...

What am I doing wrong?

Originally Posted by CurveBall

Hi all,
I was trying to decrypt the 018-5344-086.dmg with vfdecrypt and I don't succeed.
I'm trying it on a Windows 7 machine, I installed Cygwin, and I'm running this command:
vfdecrypt.exe -i 018-5344-086.dmg -o decrypted_fs.dmg -k B9CD10DD88AB615C1963E8AA04950B12DD64E0E5B11EA63C79 A02AF6DB62334C710D21DA

I get his as output:

Code:

keyDerivationAlgorithm      0
keyDerivationPRNGAlgorithm  0
keyDerivationIterationCount 0
keyDerivationSaltSize       0
keyDerivationSalt


blobEncryptionIVSize        0
blobEncryptionIV


blobEncryptionKeySizeInBits 0
blobEncryptionAlgorithm     0
blobEncryptionPadding       0
blobEncryptionMode          0
encryptedBlobSize           0
encryptedBlob



C:\Users\NAS\Desktop\aapl_FW>
C:\Users\NAS\Desktop\aapl_FW>

I get a decrypted.dmg file in the folder (297,804KB) but I can't open it with HFSExplorer...

What am I doing wrong?

Works fine here on a Mac, exept you have a blank in your key

B9CD10DD88AB615C1963E8AA04950B12DD64E0E5B11EA63C79 A02AF6DB62334C710D21DA

Oh, that black one must be a copy/past error. Well, I succeeded to decrypt the official 3.1 somehow.

The whole idea behind this question is: how to check if a download (unofficial) ipsw is pwnt with the Pwnage Tool 3.1.3. Because someone can just change the file name and say that it is pwnt. If I restore, my baseband will be updated. I emailed MuscleNerd about this, but he could only check the ipsw but couldn't say how he did that:

Originally Posted by MuscleNerd

because that brings me a little to close to copyright violations than I should probably go.

So, how do I check if an downloaded ipsw is pwnt or not. I though by decrypting the dmg's but it doesn't work...
Maybe you guys can help me?