AES (Rijndael) 256 CTR (Counter mode), symmetric military-class encryption (USA) 2012,
can be used for transmiting texts throught unsecure area.
For example: You need to communicate with Your remote friend securely.
At first, You create key pair, using asymmetric cipher (RSA 768-2048), save private (secret) key to Your password keeper (KeePass, etc) and transmit public (unsecret) key to Your friend.
He generates very very long cryptographic secure (MT 19937) random password and saves it to his password keeper.
Then he encrypts password with Your public key, using asymmetric cipher, and transmits encrypted password to You.
Text encrypted with Your public key can be decrypted only with Your private key.
You receive encrypted password, decrypt it with Your private key, using asymmetric cipher, and save decrypted password to Your password keeper.
Now you can use current cipher and transmit your messages encrypted with generated password throught unsecure area.
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