Gdoi PowerPoint PPT Presentations

Support SHA-256 as alternative to SHA-1 and MD5: replace SHA-1 due to recent ... SIG/SEQ Payload. Clarify ambiguous wording in creation of the SIG payload ...

At that time, had long history of formal analysis of crypto ... Whenever signature taken, prepend to signed data a tag saying what kind of signature it is ...

A rogue device can perpetrate a man-in-the-middle attack if the following conditions are true: ... key server SHOULD perform one of the following authorization ...

EXPERIENCES IN THE FORMAL ANALYSIS OF THE GDOI PROTOCOL Catherine Meadows Code 5543 Center for High Assurance Computer Systems Naval Research Laboratory

IETF68 (Prague), RTPSEC BoF selected DTLS-SRTP as the preferred SRTP keying mechanism ... GDOI-SRTP is overkill for a group of 3. Useful for a larger group ...

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Sound wrt symbolic and computational cryptographic models ... Challenge-Response Property. Specifying authentication for Initiator using PCL syntax ...

Security Analysis of Network Protocols: Compositional ... IP layer host-to-host security. IKEv2 [IETF ID 2004] IKE_AUTH (Authenticate) IKE_CHILD_SA (Rekey) ...

Any probabilistic poly-time computation. Fixed set of actions, e.g., decryption with known key ... Can we get the best of both worlds? Two worlds. Our Approach ...

Logic and programming languages, specification and verification, cryptography, ... Formulated by Datta, Derek, Durgin, Mitchell, Pavlovic. Example: Challenge-Response ...

More about contract signing. Talk about protocols for a while before ... Send message #2 later after client confirms. Client confirms by returning hashed data ...

CS 259 Security Analysis of Network Protocols Prof.John Mitchell Mukund Sundararajan (CA) http://www.stanford.edu/class/cs259/ Course Staff Prof. John Mitchell Out of ...

Non-destructive Combination: Ensure combined parts do not interfere ... Nondestructive Combination. DH and CR satisfy each other's invariants. Composing protocols ...

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BAN logic and successors (GNY, SvO, ...) DDMP ... Computational ... Related to: BAN, Floyd-Hoare, CSP/CCS, temporal logic, NPATRL. Example: Bob's view of NSL ...

Constraint-Based Methods: Adding Algebraic Properties to Symbolic Models Vitaly Shmatikov SRI International One-Slide Summary Constraint solving is a symbolic ...

Do not preclude the use of IKE or GSAKMP to establish keys. Manual Key Management ... All are sending on the same destination address ...

Have a specified lifetime, after which new TEK is requested by MS ... When a member leaves or when key lifetime expires, the server will push down new ...

Could break: Bob's signature from one protocol could be used to attack another ... AES based using above keys (Shared Secret-PMK) Laptop. Access Point. Auth Server ...

Encrypt, decrypt, sign only if it has the key. Example: K1, Encrypt(K1, 'hi' ... (ABSTRACTION) Security properties Any probabilistic poly-time computation ...

Title: Adventures in Computer Security Author: John C. Mitchell Last modified by: John C Mitchell Created Date: 9/7/1997 8:51:32 PM Document presentation format

Today. Basics of formal analysis of security protocols. What is protocol analysis? ... Fair exchange protocols, voting protocols. Browse 2004 projects ...

Proving IEEE 802.11i Secure. Changhua He, Mukund Sundararajan, ... sees hashsec(messages), concludes someone who knows ... 3. Concludes honest S sent ...

802.16e Vijay Chauhan Srinivas Inguva 802.16 Overview Basic Idea: Metropolitan area wireless broadband service. Main roles involved in 802.16: Base Station (BS ...

Symbolic and Computational Analysis of Network Protocol Security John Mitchell Stanford University Asian 2006 Outline Protocols Some examples, some intuition Symbolic ...

Research papers on which lectures are based. Lab Space: ... the same time theoretical work becomes dead if it doesn't receive fresh ...

SRI International. Constraint-Based Methods: Adding Algebraic Properties to. Symbolic Models ... Can read any message, decompose it into parts and re-assemble ...

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