On Mon, Jul 28, 2014 at 7:53 PM, <pedro.mar...@ml1.net> wrote: > > > Thanks for the answers about the CRC error, i found what i needed, but it > took me now to other questions. Actually i got the CRC error when i modified > some strings of a public key and then i tried to import it.
The CRC checksum can't tell the difference between intentional modification of the type you describe and data corruption; it simply knows that the checksum doesn't match what it thinks it should be, so it presents the error. > I told to my self that it would be interesting as securing method to sign > stuff with a private key "with out having the public key". this would mean that only > the person who has public key would have access to the data with out needing > a password. When would this be useful? The public key is public, and anyone with it could decode the message. To secure a message such that only the desired recipient can read it, you should encrypt a message to the recipient's public key so that only their private key can decrypt it. Simply put, I don't understand a situation where using your system would be an improvement over the current system, but perhaps I misunderstand sometihng. > (and the person with the private key too i think, it would be great if only the person > with the public key can decrypt the data, maybe there is one option, i'll check for that.) > > So why i was asking about the CRC error? Because the key was modified in a way that GPG did not expect. > when i was testing this method, i removed the keys from my keyring, and then > i imported only the secret key. For my surprise there was also the public key. > Is there anyway to only import the secret key? The public key can be (and is) regenerated as needed from the private key. If you import a private key and there is no corresponding public key in the keyring, GPG automatically recreates the public key and puts it in the keyring. As far as I know there is no way to import only a private key without the corresponding public key. Cheers! -Pete
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