Securing confidential data in XML using custom level encryption

Web application, web services and mobile computing are extensively using sensitive data. In some scenario, confidential data will be stored into the XML node. Encryption is the solution to keep confidential data in the XML file. Encryption and decryption uses same the key in symmetric algorithm. Blowfish is a proven symmetric encryption algorithm. Encrypting entire XML document using Blowfish leads to performance degradation. Encrypting entire document is not necessary. Semi-confidential information can be encrypted by custom encryption method by using key parameter. The parameter indicates the sensitivity of the data.