• Patarla Lakshmi
• Dr .M. Sailaja

The requirement to ensure the safety of data sent between any two electronic systems has grown in tandem with the popularity of such transactions. The difficulty increases when trying to prevent unwanted access to sensitive user data. As a result, protecting sensitive user information using encryption is essential. The authenticity of the picture conveyed in the communication system relies on information about the sender, which is kept secret in this study. To protect the identity of the sender, their data is encrypted before being included in the message. Multiple encryption techniques may be used to encrypt the sender's data. In this work, we use the blowfish encryption method, a symmetric key block figure, to encode the information of the source of the image, which is put away as a text record of variable sizes. Blowfish employs a 64-bit key size for encryption and decryption, with the key length varying from 32 to 448 bits. The algorithm has a skeletal framework similar to a crystalline network. MATLAB is the tool used to complete the project.

Encryption, decryption, encryption, blowfish, cipher block, embedding, authentication.

"Security analysis for transmission information used in image authentication ", International Journal of Emerging Technologies and Innovative Research (www.jetir.org), ISSN:2349-5162, Vol.9, Issue 10, page no.e537-e545, October-2022, Available :http://www.jetir.org/papers/JETIR2210474.pdf

"Security analysis for transmission information used in image authentication ", International Journal of Emerging Technologies and Innovative Research (www.jetir.org | UGC and issn Approved), ISSN:2349-5162, Vol.9, Issue 10, page no. ppe537-e545, October-2022, Available at : http://www.jetir.org/papers/JETIR2210474.pdf