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apparent non randomness in a public pgp key

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Special Forums Cybersecurity apparent non randomness in a public pgp key
# 1  
Old 08-30-2008
apparent non randomness in a public pgp key
Hello here is what I've seen
inside some public pgp keys.

Code:

gAIAAAAAAAkBAAAAAAoAAAAFAAoArwFI/gkAAAAAAAAAAAAAAAAAAAAAAAAAAAAA
AAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA
AAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA
AAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA
AAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA
AAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA
AAAAAAAAAAAAAGoYABgBAACATxIA0gAAAOAIAADgCAAABAABAAIABAAAAFI5OAAC



Code:
Ai8d6dNIpI41EtBXwK/Lsm92ulmAgBZFBdFWWYJ8ILp/GY6ju///////////////
////////////////////////////////////////////////////////////////
////////////////////////////////////////////////////////////////
////////////////////////////////////////////////////////////////
////////////////////////////////////////////////////////////////
////////////////////////////////////////////////////////////////
/////////////////////////////////////////////////////////4hGBBAR

I think a visual inspection of a pgp public key can at least tell me
if all characters are equal. then it must be something wrong.


Here is just a single joke example of a key I constructed for pattern match searching with a perl script.


PHP Code:

-----BEGIN PGP PUBLIC KEY BLOCK-----
Comment: Don't trust this key.

mQGiBDqgzyMRBAC63IHIDuA+G0pBYRlR0s9FUXlMKiw8f7RaipaqNviEzoOdgFDm
0BnUXWL0FGEkhq6+aTgvm4a9P7ftraAis7kZzokHej2tzQdbyGcMURrY41COa2iZ
/I+/qMmx4++/u24mIqg1mY1T/AfAJj922mHES0Q6CSee23zqZWz0+qvqQwCg3gfM
19ZwrPBtPVh+uxnQ+klQKEUD/3PullwjgE1e35qf0ncWHzLm8zJprQPu8yDnqXpu
HGSz6mEBZIFxSm4CZJHulFFBgwB7vKfoa/ZfJU3KXu7eyvmRk7aS9rlJcu3A0+vA
U0bXO/OmKr8YYiD88XrTd1gfrawvRAgRWu0VjIEp24yiEYRjjTr1h+XRYijuwLXE
*deleted*
gEkeYk3w5hILkh/EnYeKh4Vurdtel5vOU42SRC9Ni9znuq1/qv167Pp3XzDauDAI
3586lV6iQyl89L0VwajKReV2jOB9NyQapjjL7xeoKbfhn3MqoVAqFSHLrS8u1AJo
BvzVUHXAZgdjtNiITgQYEQIABgUCOqDrHAASCRBo4SUrfaXFOwdlR1BHAAEBvE8A
n3Z/LhDMOs15ThLnVUAEWVoCmVznAJ4l612mBTj1oOIVOx4pu7YIuLsCpA==
=
-----END PGP PUBLIC KEY BLOCK----- 
How can I find repeating nonrandom patterns in a pgp public key? Does it exist a PGP key validator?



Please?
Last edited by DukeNuke2; 08-30-2008 at 02:44 AM.. Reason: no jokes about relegion!
# 2  
Old 08-30-2008
A good practical test of randomness is: does it compress well? If not, it's random. (Not necessarily truly random, of course; a compressed file doesn't compress well, because the redundancy has been reduced by the compression algorithm, but if you know the input and the compression algorithm, it can be reconstructed at will.)
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