How to decrypt an ACS backup file (.gpg.tar) using GPG keychain software? I tried decrypting the ISE backup file and it was successful, however decrypting ACS back up failed.
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It just occurred to me that ACS doesn't allow you to specify an encryption key. Therefore you won't stand a chance to decode this file. Only the ACS config restore function will be able to decrypt it.
ISE is a bit friendlier in that respect because we are forced to chose an encryption key which we then use going forward.
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Have you tried this command on a Linux command line?
gpg -v --batch --yes --passphrase myEncryptionKey -d somefile.tar.gpg > somefile.tar
You need to know the key which was used to encrypt the file - myEncryptionKey
Input filename - somefile.tar.gpg
Output filename - somefile.tar
I tried the command you provided, but it did not work for ACS however it worked for ISE backup.
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