Timeline for Why not use symmetric encryption?
Current License: CC BY-SA 3.0
11 events
| when toggle format | what | by | license | comment | |
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| Dec 18, 2014 at 18:13 | history | edited | Nabodix | CC BY-SA 3.0 |
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| Dec 18, 2014 at 17:58 | history | edited | Nabodix | CC BY-SA 3.0 |
added 76 characters in body
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| Dec 18, 2014 at 17:53 | comment | added | Nabodix | You got me. It's not quite the same indeed. (I'm editing my answer accordingly right away ;) Thx! | |
| Dec 18, 2014 at 17:23 | comment | added | reirab | You can, but you can't, for example, prove in a court of law that the other person sent it as opposed to you creating it yourself (since you obviously have to also have the key.) In other words, non-reputability can't be supplied by symmetric key encryption. | |
| Dec 18, 2014 at 17:17 | comment | added | Nabodix | Good point ! I've not mentionned it because, digital signature doesn't seem to be the concern. And, beside, if we have one key per each different communication/email/... (and that all secure conditions are fullfiled, which is not easy) we can be pretty confident of who has wrote the message. | |
| Dec 18, 2014 at 16:56 | comment | added | reirab | Actually, it's not quite the same. As mentioned by another answer, digital signature is impossible with symmetric encryption. All digital signature schemes rely on asymmetric encryption since, by definition, symmetric encryption requires that anyone who can decrypt the message can also encrypt it. Asymmetric encryption, on the other hand, ensures that a message decrypted with a given public key could only possibly have been encrypted by someone in possession of the private key. | |
| Dec 18, 2014 at 16:53 | history | edited | Nabodix | CC BY-SA 3.0 |
I'm still maniac :D
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| Dec 18, 2014 at 16:45 | history | edited | Nabodix | CC BY-SA 3.0 |
I'm perfectionist ^^
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| Dec 18, 2014 at 16:33 | history | edited | Nabodix | CC BY-SA 3.0 |
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| Dec 18, 2014 at 11:39 | review | First posts | |||
| Dec 18, 2014 at 12:01 | |||||
| Dec 18, 2014 at 11:32 | history | answered | Nabodix | CC BY-SA 3.0 |