Title :
Pitfalls in public key watermarking
Author :
Barreto, Paulo S L M ; Kim, Hae Yong
Author_Institution :
Dept. of Electron. Eng., Sao Paulo Univ., Brazil
Abstract :
The cryptographic concept of digital signatures is well suited to image watermarking for authentication and integrity verification. However, the peculiar nature of watermarks demands special care in the application of digital signatures for this purpose. We cryptanalyze a recently proposed watermarking scheme and show how it can be strengthened to thwart our attacks, exploring the use of hashing function contexts and signature algorithms based on elliptic curve cryptography
Keywords :
data integrity; image processing; message authentication; public key cryptography; authentication; cryptographic concept; digital signatures; elliptic curve cryptography; hashing function contexts; image watermarking; integrity verification; public key watermarking; signature algorithms; watermarking scheme; Authentication; Color; Digital images; Digital signatures; Elliptic curve cryptography; Gray-scale; Multimedia systems; Public key; Public key cryptography; Watermarking;
Conference_Titel :
Computer Graphics and Image Processing, 1999. Proceedings. XII Brazilian Symposium on
Conference_Location :
Campinas
Print_ISBN :
0-7695-0481-7
DOI :
10.1109/SIBGRA.1999.805730
