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A major issue for the computer networks is to prevent the information from Threats. To secure the information, cryptography technique has been implemented. By using this technique, data can be encrypted over the network during transmission. Once the data has been sent to the destination, the authorized person (user) will decrypt the data along with the key. The data can be in the form of text, image, audio etc... Visual cryptography technique has been implemented for image. Using the visual cryptography technique, fake passport can be identified. The image can be encrypted and the decryption will be done by the immigration department to identify whether the passport is real or not.
In this paper RSA algorithm is used for encryption of data that can be invoked with the steganography method .the data can be embedded into the images by the LSB algorithm in steganography. The RSA algorithm is used in modern computer for encryption and decryption. The RSA algorithm encryption done by two keys called symmetric and asymmetric key. Which provide high security in the steganography method. The LSB algorithm is the used for bit wise encryption of cipher text into steganography image. This method provide high security to the sensitive data over the communication between the source and destination. The hidden data is called invisible data that only accessed by the authorized person.
