Re: detached signature, "can't hash datafile: No data"

2022-01-01 Thread Sami Badri via Gnupg-users
On 12/31/21 23:12, Robert J. Hansen via Gnupg-users wrote: Shouldn't I be able to verify the signature independently? Why? A signature is a piece of data that attests another piece of data is unchanged.  If it doesn't have a second piece of data to compare to, all it can say is "I have a go

Re: detached signature, "can't hash datafile: No data"

2022-01-01 Thread Robert J. Hansen via Gnupg-users
> I would've thought that a clearsign signature preserves the data above the pgp signature, in plaintext. Isn't the plaintext above the signature the original data? In that case, it is. I spoke inartfully: I meant to say that detached signatures can be done in either a binary format or in

Re: detached signature, "can't hash datafile: No data"

2021-12-31 Thread Robert J. Hansen via Gnupg-users
Shouldn't I be able to verify the signature independently? Why? A signature is a piece of data that attests another piece of data is unchanged. If it doesn't have a second piece of data to compare to, all it can say is "I have a good digital signature that attests to a hash value of XYZ for

detached signature, "can't hash datafile: No data"

2021-12-31 Thread S.B. via Gnupg-users
Hello, I wanted to verify an install file so I downloaded file.dmg and the accompanying detached signature.asc. The public key was imported and verified. Using GnuPG, I used the command: gpg --verify signature.asc file.dmg and.. "Good signature from..." However, when I try to verify signature