Encryption and Decryption

[silpa]

Apart from the encryption and decryption methods which uses different algorithms
given in different sites on Internet,I want to encrypt and decrypt data in a different manner.

I will define a custom string or array such as
($,@,!,%,^,&) ---a way like this.

If I give a name or any information in textbox,it should be encrypted using the above characters only.
for example,If I give as

net in a textbox and click a button,then it should be encrypted as

$@!------like this i.e., using user defined string or array of characters.

Is there any way to do this.

If so,please help me regarding this.

Thanks,
Silpa

[PRR]

"Apart from the encryption and decryption methods which uses different algorithms
given in different sites on Internet,I want to encrypt and decrypt data in a different manner."
One of best encryption algorithm is Rijndael. Its secure n robust.

http://msdn.microsoft.com/en-us/library/system.security.cryptography.rijndaelmanaged.aspx

"I will define a custom string or array such as
($,@,!,%,^,&) ---a way like this."

You may have to write a custom algorithm for this( depending on your requirement)... i guess u will have to have more than 26 characters... n also take care of repetitive words...Some thing like mapping... @=A/a and=@@@....