2 ms·
The max input size is for one message. It's effectively the "block size" for RSA. You can send multiple messages using a single RSA key (and in fact pretty mu
by YZF 13y ago
The max input size is for one message. It's effectively the "block size" for RSA. You can send multiple messages using a single RSA key (and in fact pretty much everyone does that, otherwise you'd need a new public key for every message). RSA is a complete crypto system, you don't need any additional ciphers. You do need randomiziation (e.g. random padding).
- YZF 13y agoFor the sake of completeness, one such construction where RSA is used as a cipher is OAEP (Optimal Asymmetric Encryption Padding). Beyond being slow it has some other inefficiencies but that's another story.