Nuprl Lemma : ses-signature-unique2
∀[s:SES]
∀[es:EO+(Info)]. ∀[a,b:E(Sign)].
{(signed(a) = signed(b) ∈ SecurityData) ∧ (signer(a) = signer(b) ∈ Id)}
supposing signature(a) = signature(b) ∈ Atom1
supposing PropertyO
Proof
Definitions occuring in Statement :
ses-ordering: PropertyO,
ses-signed: signed(e),
ses-signer: signer(e),
ses-sig: signature(e),
ses-sign: Sign,
ses-info: Info,
security-event-structure: SES,
sdata: SecurityData,
es-E-interface: E(X),
event-ordering+: EO+(Info),
Id: Id,
atom: Atom$n,
uimplies: b supposing a,
uall: ∀[x:A]. B[x],
guard: {T},
and: P ∧ Q,
equal: s = t ∈ T
Lemmas :
ses-signature-unique,
equal_wf,
ses-sig_wf,
es-E-interface_wf,
ses-info_wf,
ses-sign_wf,
es-interface-subtype_rel2,
es-E_wf,
event-ordering+_subtype,
event-ordering+_wf,
top_wf,
subtype_top,
sdata_wf,
Id_wf,
ses-ordering_wf,
security-event-structure_wf,
pi1_wf_top,
squash_wf,
true_wf,
subtype_rel_product,
iff_weakening_equal,
pi2_wf
Latex:
\mforall{}[s:SES]
\mforall{}[es:EO+(Info)]. \mforall{}[a,b:E(Sign)].
\{(signed(a) = signed(b)) \mwedge{} (signer(a) = signer(b))\} supposing signature(a) = signature(b)
supposing PropertyO
Date html generated:
2015_07_23-PM-00_06_57
Last ObjectModification:
2015_02_04-PM-03_40_01
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