| A common means of modern encryption is a one-way system in which encryption is easy but decryption is computationally impractical. |
| There are even better encryption techniques that are asymmetric, that is, the keys used for encryption and decryption are not the same. |
| Asymmetric encryption relies on two keys that work together as a pair an encryption key and a decryption key. |
| Now anyone can use your public key to encrypt email messages to you, but only you alone can use your private key for decryption. |
| More recent viruses and blended threats also extract passwords, decryption keys and logged keystrokes. |
| For example, in this case, it is easier to try to factor the modulus N than to perform an exhaustive key search on all possible decryption keys. |
