VerifHub

VerifHub allows Verifpal® users to easily share and discuss Verifpal models of cryptographic protocols. The VerifHub service provides unique URIs for each shared model which includes a syntax-highlighted model, an automatically generated diagram and a summary of the analysis results.

Switch to Diagram View

DTCP_v1.0.vp

Submitted on 18 Dec 20 16:32 UTC.

attacker[active]

principal Bob[
	generates rb
	knows private b
	cert_b = G^b
]

Bob -> Alice: rb, [cert_b]

principal Alice[
	generates ra
	knows private a
	cert_a = G^a
]

Alice -> Bob: ra, [cert_a]

principal Bob[
	generates y
	knows private textb
	yg = G^y
	sigb = SIGN(y, CONCAT(ra, textb))
]

Bob -> Alice: yg, textb, sigb

principal Alice[
	_ = SIGNVERIF(yg, CONCAT(ra, textb), sigb)?
	generates x
	knows private texta
	xg = G^x
	siga = SIGN(x, CONCAT(rb, texta))
]

Alice -> Bob: xg, texta, siga

principal Bob[
	_ = SIGNVERIF(xg, CONCAT(rb, texta), siga)?
]

queries[
	freshness? rb
	unlinkability? rb, cert_b
	authentication? Bob -> Alice: yg
]

Switch to Model View

Title:DTCP_v1.0.vp Note over Bob: generates rb\n knows private b\n cert_b = G^b\n Bob -> Alice: rb, [cert_b] Note over Alice: generates ra\n knows private a\n cert_a = G^a\n Alice -> Bob: ra, [cert_a] Note over Bob: generates y\n knows private textb\n yg = G^y\n sigb = SIGN(y, CONCAT(ra, textb))\n Bob -> Alice: yg, textb, sigb Note over Alice: _ = SIGNVERIF(yg, CONCAT(ra, textb), sigb)?\n generates x\n knows private texta\n xg = G^x\n siga = SIGN(x, CONCAT(rb, texta))\n Alice -> Bob: xg, texta, siga Note over Bob: _ = SIGNVERIF(xg, CONCAT(rb, texta), siga)?\n

Analysis Results

The model submitter provided the following analysis results:

Query 1 (Freshness): FAIL
Query 2 (Unlinkability): FAIL
Query 3 (Authentication): FAIL

Please note that these results are not verified to be accurate. The model submitter may choose to provide false analysis results if they so desire. It is strongly recommended that you re-run the analysis of this model locally if you wish to verify the authenticity of the analysis results above.

Discuss This Model

© Copyright 2019- Nadim Kobeissi. All Rights Reserved. “Verifpal” and the “Verifpal” logo/mascot are registered trademarks of Nadim Kobeissi. Verifpal software is provided as free and open source software, licensed under the GPLv3. Verifpal User Manual, as well as this website, are provided under the CC BY-NC-ND 4.0 license. Published by Symbolic Software.