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> 1. Is a piece of paper torn in half really cryptography? Cryptography is not just about confidentiality, ensuring authenticity is also cryptography. > If yo
by nsajko 7y ago
> 1. Is a piece of paper torn in half really cryptography?
Cryptography is not just about confidentiality, ensuring authenticity is also cryptography.
> If you matched the public half the note exactly
The point is that it is hard to duplicate even the "public half" of the note.
- gruez 7y ago>Cryptography is not just about confidentiality, ensuring authenticity is also cryptography. So by that logic, a wax seal is also cryptography?
- crankylinuxuser 7y agoI'd argue that a wax seal was more a crypto signature (md5, sha, etc) than it was a cipher of the text enclosed. Of course, reading by breaking means armed thugs killed you. But we'll leave that analogy aside!
- dredmorbius 7y agoSee: Dagger-Trap letterlocking https://youtube.com/watch?v=16GAIaYN_Gk https://youtube.com/watch?v=16GAIaYN_Gk