Hi, Is it possible to use AES en-decryption using asymmetric keys(private and public keys)
Hi Dorai, The short answer is no. AES is a block cipher based on symmetric keys. But note, practically all secure conversations start out using asymmetric keying first. Symmetric keying processes are faster processes, you want to use them in communication (in general). But they require a shared key between the parties (encrypt/decrypt use the same key). So Alice and Bob need to know the same key to communicate. The problem is, Alice cannot tell Bob what the key is in the clear, because everybody can eavesdrop. This is why most secure conversations employ a security handshake. They start out using a public/private keying process (such as RSA), where you can freely give out your public key, only you know your private key. So...Alice gives Bob her public key, he creates a symmetric key for AES, encrypts it with her public (RSA) key and sends it back. The message can only be decrypted by her private key and only Alice has that. Once she has decrypted it, Alice and Bob can start using the symmetric process for communication. - Bryce ______________________________________________________________________ OpenSSL Project http://www.openssl.org User Support Mailing List openssl-users@openssl.org Automated List Manager [EMAIL PROTECTED]
