Hai , i will explain about encrypt and decrypt .
Encrypt , chipertext ( the conversion of data into a form ) that cannot easily understood by people .
Decrypt , process of converting encryption data back into the beginning data or original data so it can be understood .
Encryption/decryption is especially important in wireless communications . This is because wireless circuits are easier to tap than their hard-wired counterparts . Nevertheless , encryption / decryption is a good idea when carrying out any kind of sensitive transaction , such as a credit-card purchase online , or the discussion of a company secret between different departments in the organization . However , as the strength of encryption/decryption increases, so does the cost.