Cpa security - PowerPoint PPT Presentation

Active attacks on CPA-secure encryption

Online Cryptography Course Dan Boneh. Authenticated Encryption. Active attacks on CPA-secure encryption. Recap: the story so far. Confidentiality : semantic security against a CPA attack E ncryption secure against eavesdropping only Integrity :

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862 views • 62 slides

Review: PRPs and PRFs

Online Cryptography Course Dan Boneh. Using block ciphers. Review: PRPs and PRFs. Block ciphers: crypto work horse. n bits. n bits. E, D. PT Block. CT Block. Key. k bits. Canonical examples: 3DES: n= 64 bits, k = 168 bits

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648 views • 54 slides

CMSC 456 Introduction to Cryptography

CMSC 456 Introduction to Cryptography. Jonathan Katz. Overview of exam. The exam is cumulative More emphasis on material covered in the second half of the semester Focus on understanding and application, less on being clever

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201 views • 17 slides

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