this post was submitted on 26 Jul 2023
33 points (100.0% liked)

Ask Science

8471 readers
65 users here now

Ask a science question, get a science answer.

Community Rules

Rule 1: Be respectful and inclusive.Treat others with respect, and maintain a positive atmosphere.

Rule 2: No harassment, hate speech, bigotry, or trolling.Avoid any form of harassment, hate speech, bigotry, or offensive behavior.

Rule 3: Engage in constructive discussions.Contribute to meaningful and constructive discussions that enhance scientific understanding.

Rule 4: No AI-generated answers.Strictly prohibit the use of AI-generated answers. Providing answers generated by AI systems is not allowed and may result in a ban.

Rule 5: Follow guidelines and moderators' instructions.Adhere to community guidelines and comply with instructions given by moderators.

Rule 6: Use appropriate language and tone.Communicate using suitable language and maintain a professional and respectful tone.

Rule 7: Report violations.Report any violations of the community rules to the moderators for appropriate action.

Rule 8: Foster a continuous learning environment.Encourage a continuous learning environment where members can share knowledge and engage in scientific discussions.

Rule 9: Source required for answers.Provide credible sources for answers. Failure to include a source may result in the removal of the answer to ensure information reliability.

By adhering to these rules, we create a welcoming and informative environment where science-related questions receive accurate and credible answers. Thank you for your cooperation in making the Ask Science community a valuable resource for scientific knowledge.

We retain the discretion to modify the rules as we deem necessary.

founded 1 year ago
MODERATORS
sabbah@lemmy.world
AradFort@lemmy.world
ken_cleanairsystems@lemmy.sdf.org
count_of_monte_carlo@lemmy.world
33
How does a signing a post with a pgp key prove that you are actually the person behind the post? (lemmy.nz)
submitted 1 year ago by Fizz@lemmy.nz to c/askscience@lemmy.world
40 comments fedilink hide all child comments
 

I saw that people on the dark web would sign their posts with a PGP key to prove that their account has not been compromised. I think I understand the concept of how private and public keys work but I must be missing something because I don't see how it proves anything.

I created a key and ran gpg --export --armor fizz@... and I ran that twice and both blocks were identical. If I posted my public key block couldn't someone copy and paste that under their message and claim to be me?

you are viewing a single comment's thread
view the rest of the comments
[–] 4am@lemmy.world 3 points 1 year ago

For signing, it’s backwards - you encrypt with the private key, and then everyone else can decrypt with the public key. If that doesn’t work, they know that the message wasn’t signed by the private key paired with the public key they have, and therefore is invalid and is not to be trusted.

Signing proves authenticity (only the private key holder can sign), encryption provides privacy (only the private key holder can read)