PDF-Encryption and Decryption of Digital Image Using Color

S Qaid Sanjay N Talbar 2 1 Research Student Electronics Telecommunications Dept SGGS institute of Engineering and Technology Nanded India 2 Professor Dept Electronics Telecommunications SGGS institute of Engineering and Technology Nanded India ABS. The nature and acquisition of a digital image. Image Types. All images can be thought of as “color” images since even black and white are colors. More commonly we distinguish between three types of images:. Dan Fleck. CS 469: Security Engineering. These slides are modified with permission from Bill Young (. Univ. of Texas). Coming up: Cryptography. 1. Cryptography. Apply your cryptanalytic skills. . How . Cryptography, Authentication, . and Protecting OS Resources. CS. . 111. On-Line MS Program. Operating . Systems . Peter Reiher. . Outline. Basic concepts in computer security. Design principles for security. image). Raed. S. . Rasheed. 2012. Agenda. Color.. Color . Image.. Color Models. RGB . color. model.. CMYK . color. model.. HSV . and HSL color. . model.. Channel . (digital image) . Color. . Depth. Name : . Maryam Mohammed . Alshami. ID:. H00204657. Encryption. : . is the process of encoding messages or information in such a way that only authorized parties can read it. .. Important part of computing to keep our file . usna. . si110. Symmetric Encryption Limitations. Symmetric encryption algorithms use the . same key for encryption and decryption. Both parties must agree to a secret key. Fundamental limitation. How do you exchange a secret key?. in . Mathematical Informatics. Lecture 3. : . Other Applications of Elliptic Curve. 23. h. October 2012. Vorapong Suppakitpaisarn. http://www-imai.is.s.u-tokyo.ac.jp/~mr_t_dtone/. vorapong@mist.i.u-tokyo.ac.jp. B. R. Chandavarkar. Asst. Prof., CSE Dept.,. NITK, Surathkal.. brcnitk@gmail.com. brc.nitk.ac.in. Contents. Data Security. Introduction. Transposition Techniques. Substitution Techniques. Classification. Lect. . 6. : . Block . Ciphers. 2. Model of Symmetric Cryptosystem. E. D. Shared Secret Key. Shared Secret Key. Key. K. Secure Channel. Insecure Channel. Plaintext. M. Ciphertext . C. Plaintext. M. ” . Submitted by. ANAMIKA SHARMA. Roll No.13PCS001. in partial fulfillment for the award of the degree. of . MASTER OF TECHNOLOGY. in. . COMPUTER SCIENCE AND ENGINEERIN. G. Under The Guidance of. Mr. . III. Fair Multiparty Computation from Public Bulletin Boards. Arka. Rai . Choudhuri. - Matthew Green - Abhishek Jain - Gabriel . Kaptchuk. . - Ian . Miers. ACM CCS’17. Multi-Party Computation. Multi-Party Computation. Crypto Concepts Symmetric encryption, Public key encryption, and TLS Cryptography Is: A tremendous tool The basis for many security mechanisms Is not: The solution to all security problems Reliable unless implemented and used properly Image Types. All images can be thought of as “color” images since even black and white are colors. More commonly we distinguish between three types of images:. Color: an image containing any color. Techniques . Symmetric Cipher Model. Basic terminology:. Plaintext:. original message to be encrypted. Cipher text: . the encrypted message. Enciphering or encryption Algorithm: . The process of converting plaintext into cipher text..