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test6.vp

Submitted on 17 Jul 20 15:41 UTC.

attacker[active]

principal Bob[
	knows private b
	gb = G^b
]

Bob -> Alice: gb

principal Alice[
	knows private a
	knows private aa
	ga = G^a
	gaa = G^aa
	egaa = AEAD_ENC(gb^a, gaa, nil)
	s = SIGN(aa, HASH(ga, gb))
]

Alice -> Bob: ga, egaa, s

principal Bob[
	b_gaa = AEAD_DEC(ga^b, egaa, nil)?
	knows private m
	em = AEAD_ENC(HASH(ga^b, b_gaa^b), m, nil)
	_ = SIGNVERIF(b_gaa, HASH(ga, gb), s)?
]

Bob -> Alice: em

principal Alice[
	x = AEAD_DEC(HASH(gb^a, gb^aa), em, nil)?
	knows private m2
	em2 = AEAD_ENC(HASH(gb^a, gb^aa), m2, nil)
]

Alice -> Bob: em2

principal Bob[
	_ = AEAD_DEC(HASH(ga^b, b_gaa^b), em2, nil)?
]

queries[
	confidentiality? gaa
	confidentiality? m
	confidentiality? m2
	authentication? Alice -> Bob: egaa
	authentication? Bob -> Alice: em
	authentication? Alice -> Bob: em2
]

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Title:test6.vp Note over Bob: knows private b\n gb = G^b\n Bob -> Alice: gb Note over Alice: knows private a\n knows private aa\n ga = G^a\n gaa = G^aa\n egaa = AEAD_ENC(gb^a, gaa, nil)\n s = SIGN(aa, HASH(ga, gb))\n Alice -> Bob: ga, egaa, s Note over Bob: b_gaa = AEAD_DEC(ga^b, egaa, nil)?\n knows private m\n em = AEAD_ENC(HASH(ga^b, b_gaa^b), m, nil)\n _ = SIGNVERIF(b_gaa, HASH(ga, gb), s)?\n Bob -> Alice: em Note over Alice: x = AEAD_DEC(HASH(gb^a, gb^aa), em, nil)?\n knows private m2\n em2 = AEAD_ENC(HASH(gb^a, gb^aa), m2, nil)\n Alice -> Bob: em2 Note over Bob: _ = AEAD_DEC(HASH(ga^b, b_gaa^b), em2, nil)?\n

Analysis Results

The model submitter provided the following analysis results:

Query 1 (Confidentiality): FAIL
Query 2 (Confidentiality): FAIL
Query 3 (Confidentiality): FAIL
Query 4 (Authentication): FAIL
Query 5 (Authentication): FAIL
Query 6 (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.

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