Generic Internal State Recovery on Strengthened HMAC: n-bit Secure HMAC Requires Key in All Blocks

• المؤلفون الرئيسيون: Sasaki, Yu, Wang, Lei
• مؤلفون آخرون: Lee Kong Chian School of Medicine (LKCMedicine)
• التنسيق: مقال
• اللغة: English
• منشور في: 2016
• الموضوعات: Internal state recovery; Multi-collision; HMAC; Generic attack
• الوصول للمادة أونلاين: https://hdl.handle.net/10356/82093; http://hdl.handle.net/10220/39787
• المؤسسة: Nanyang Technological University

HMAC is the most widely used hash based MAC scheme. Recently, several generic attacks have been presented against HMAC with a complexity between 2n/2 and 2n, where n is the output size of an underlying hash function. In this paper, we investigate the security of strengthened HMAC instantiated with a...