A Stego-Crypto-Based Technique for Multimedia Transmission | ||||
| Journal of the ACS Advances in Computer Science | ||||
| Article 2, Volume 5, Issue 1, 2011, Page 21-36 PDF (3.89 MB) | ||||
| Document Type: Original Article | ||||
| DOI: 10.21608/asc.2011.158211 | ||||
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| Abstract | ||||
| The main goal of this paper is to give new insights and directions on how to improve existing methods of hiding secret messages, possibly by combining steganography and cryptography. We start by a security background describing its history and a short comparison between cryptography and steganography. We then illustrate our approach that helps us achieve a higher level of secrecy and security. In such a way to make it harder for any steganalyst to retrieve the plaintext of a secret message from a stego- object if cryptanalysis were not used. The MSPC has been exploited to bestow this proposed approach. MSPC relies for its security on the difficulty of factoring large prime numbers. The RSA generator is used as a Stego-key for astonishing randomization of embedding the ciphertext into an innocent image - which is the most popular cover objects used for steganography - to endow with another layer of protection. It is proved that extracting any information about the plaintext is hard for any eavesdropper with computational resources while maintaining the image quality. Cryptography and Steganography procedures are completely reversible at the receiver site. | ||||
| Keywords | ||||
| Cryptography; Steganography; Public-Key; Probabilistic Encryption; Chinese Remainder Theorem; Quadratic Residues; Multimedia; RSA and the Extended Euclidean Algorithm | ||||
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