How to encrypte a url parameter in a visualforce page in Salesforce?

Hi Yogesh,

Steps For  URL Encryption :

Generate an AES key  to perform Encryption
Blob key = Blob.valueOf(‘aAk!h@37WQ9bsAfk’);

2 . Create a Encoded cypher text.

Here we are encoding accountid into cypertext .  so consider acc.id as account id .

string encodedCipherText = EncodingUtil.base64Encode(Crypto.encryptWithManagedIV('AES128', key, Blob.valueOf(acc.Id)));
3. Encode cypher text using  URLEncode method

string encodedId = encodingUtil.URLEncode(encodedCipherText,’UTF-8′);

4. Now Embed encodeId to your visualforce page url like

https://c.visualforce.com/apex/visualforcePage?id=’+encodedId

Code for Encryption

Blob key = Blob.valueOf('aAk!h@37WQ9bsAfk');
string encodedCipherText = EncodingUtil.base64Encode(Crypto.encryptWithManagedIV('AES128', key, Blob.valueOf(c.Id)));
string encodedId = encodingUtil.URLEncode(encodedCipherText,'UTF-8');

Encrypted_URL__c = 'https://c.visualforce.com/apex/visualforcepage?id='+encodedId));

Thanks.