The Unknown Key-Share Attack Sample Clauses

The Unknown Key-Share Attack. In [1] the authors presented a so called the second source substitution attack to TAK-2 and TAK-3. Assume in some way E successfully obtains its certification CertE = (IE yE P SCA(IE yE P )) using yE = δ2xP as its public key. Note that yA = xP is A’s public key and E does not know its private key δ2x. E launch the following attack. A → EB, EC : T 1 = aP, T 2 = a(xP ), CertA (1) A′ E → B, C : T 1 A ′ = T 1 = aP, T 2 ′ = δ2T 2 = aδ2xP, CertE (1 ) ′ A′ A ′ A A B B → E, C : T 1 ′ C → E, B : T 1 = bP, T 2 B ′ = cP, T 2 = b(yP ), CertB (2 ) ′ = c(zP ), CertC (3 ) C ′ C ′ EB → A, EC : T 1 = δT 1 = δbP, T 2 = δT 2 = δb(yP ), CertB (2) B B′ B B′ EC → A, EB : T 1 = δT 1 = δcP, T 2 = δT 2 = δc(zP ), CertC (3) C C C C The session key of B and C shared with E is KBE = KCE = eˆ(P, P )aδ xbycz and the session key of A shared with B and C is XXXX = KAEC = eˆ(P, P )axδ bycz = KBE = KCE. Now E forwards A’s messages encrypted under key XXXX = KAEC to B and C and fools them into believing that A’s messages come from
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The Unknown Key-Share Attack. In [1] the authors presented a so called the second source substitution attack to TAK-2 and TAK-3. Assume in some way E successfully obtains its certification CertE = (IE yE P SCA(IE yE P )) using yE = δ2xP as its public key. Note that yA = xP is A’s public key and E does not know its private key δ2x. E launch the following attack. The session key A A

Related to The Unknown Key-Share Attack

  • Claims for Concealed or Unknown Conditions If conditions are encountered at the site which are (1) subsurface or otherwise concealed physical conditions which differ materially from those indicated in the Contract Documents or (2) unknown physical conditions of an unusual nature, which differ materially from those ordinarily found to exist and generally recognized as inherent in construction activities of the character provided for in the Contract Documents, then notice by the observing party shall be given to the other party promptly before conditions are disturbed and in no event later than twenty-one (21) days after first observance of the conditions. The Architect will promptly investigate such conditions and, if they differ materially and cause an increase or decrease in the Contractor's cost of, or time required for, performance of any part of the Work, will recommend an equitable adjustment in the Contract Sum or Contract Time, or both. If the Architect determines that the conditions at the site are not materially different from those indicated in the Contract Documents and that no change in the terms of the Contract is justified, the Architect shall so notify the Owner and Contractor in writing, stating the reasons. Claims by either party in opposition to such determination must be made within twenty-one (21) days after the Architect has given notice of the decision. If the Owner and Contractor cannot agree on an adjustment in the Contract Sum or Contract Time, the adjustment shall be referred to the Architect for initial determination, subject to further proceedings pursuant to Paragraph 4.4.

  • Unknown Claims Executive acknowledges that Executive has been advised to consult with legal counsel and that Executive is familiar with the principle that a general release does not extend to claims that the releaser does not know or suspect to exist in his or her favor at the time of executing the release, which, if known by him or her, must have materially affected his or her settlement with the releasee. Executive, being aware of this principle, agrees to expressly waive any rights Executive may have to that effect, as well as under any other statute or common law principles of similar effect.]3

  • Concealed or Unknown Conditions If the Contractor encounters conditions at the site that are (1) subsurface or otherwise concealed physical conditions that differ materially from those indicated in the Contract Documents or (2) unknown physical conditions of an unusual nature, that differ materially from those ordinarily found to exist and generally recognized as inherent in construction activities of the character provided for in the Contract Documents, the Contractor shall promptly provide notice to the Owner and the Architect before conditions are disturbed and in no event later than twenty-one (21) calendar days after first observance of the conditions. The Owner will promptly investigate such conditions and, if the Owner determines that they differ materially and cause an increase or decrease in the Contractor’s cost of, or time required for, performance of any part of the Work, will authorize an equitable adjustment in the Contract Sum or Contract Time, or both. If the Owner determines that the conditions at the site are not materially different from those indicated in the Contract Documents and that no change in the terms of the Contract is justified, the Owner shall promptly notify the Contractor in writing, stating the reasons. If the Contractor disputes the Owner’s determination, the Contractor party may assert a Claim as provided in Article 15.

  • NO LIMITATION OF LIABILITY FOR DAMAGES FOR PERSONAL INJURY OR PROPERTY DAMAGE ARE PERMITTED OR AGREED BY TIPS/ESC REGION 8. Per Texas Education Code §44.032(f), reasonable Attorney’s fees are recoverable by the prevailing party in any dispute resulting in litigation. State of Texas Franchise Tax By signature hereon, the bidder hereby certifies that he/she is not currently delinquent in the payment of any franchise taxes owed the State of Texas under Chapter 171, Tax Code.

  • Release of Unknown Claims Employee expressly waives and relinquishes all rights and benefits afforded by any statute (including, but not limited to, Section 1542 of the Civil Code of the State of California and analogous laws of other states), which limits the effect of a release with respect to unknown claims. Employee does so understanding and acknowledging the significance of the release of unknown claims and the waiver of statutory protection against a release of unknown claims (including, but not limited to, Section 1542). Section 1542 of the Civil Code of the State of California states as follows: “A GENERAL RELEASE DOES NOT EXTEND TO CLAIMS WHICH THE CREDITOR OR RELEASING PARTY DOES NOT KNOW OR SUSPECT TO EXIST IN HIS OR HER FAVOR AT THE TIME OF EXECUTING THE RELEASE AND THAT, IF KNOWN BY HIM OR HER, WOULD HAVE MATERIALLY AFFECTED HIS OR HER SETTLEMENT WITH THE DEBTOR OR RELEASED PARTY.” Thus, notwithstanding the provisions of Section 1542 or of any similar statute, and for the purpose of implementing a full and complete release and discharge of the Company Releasees, Employee expressly acknowledges that this Agreement is intended to include in its effect, without limitation, all Claims which are known and all Claims which Employee does not know or suspect to exist in Employee’s favor at the time of execution of this Agreement and that this Agreement contemplates the extinguishment of all such Claims. Employee acknowledges that he/she might hereafter discover facts different from, or in addition to, those Employee now knows or believes to be true with respect to a Claim or Claims released herein, and they expressly agree to assume the risk of possible discovery of additional or different facts, and agree that this Agreement shall be and remain effective, in all respects, regardless of such additional or different discovered facts.

  • Arbitration, Damages, Warranties Notwithstanding any language to the contrary, no interpretation of this contract shall find that the State or its agencies have agreed to binding arbitration, or the payment of damages or penalties. Further, the State of Kansas and its agencies do not agree to pay attorney fees, costs, or late payment charges beyond those available under the Kansas Prompt Payment Act (K.S.A. 75-6403), and no provision will be given effect that attempts to exclude, modify, disclaim or otherwise attempt to limit any damages available to the State of Kansas or its agencies at law, including but not limited to the implied warranties of merchantability and fitness for a particular purpose.

  • Client Warranties Client covenants, represents, and warrants that:

  • Exclusion of Consequential Damages ‌ Notwithstanding anything contained herein to the contrary, neither Party will be liable under this Agreement or under any cause of action relating to the subject matter of this Agreement for any special, indirect, incidental, punitive, exemplary or consequential damages, including loss of profits, loss of use of any property or claims of customers or contractors of the Parties for any such damages.

  • Windstorm or hail This peril does not include loss to the property contained in a building caused by rain, snow, sleet, sand or dust unless the direct force of wind or hail damages the building causing an opening in a roof or wall and the rain, snow, sleet, sand or dust enters through this opening. This peril includes loss to watercraft and their trailers, furnishings, equipment, and outboard engines or motors, only while inside a fully enclosed building.

  • Exclusion of Consequential Loss Except as expressly provided otherwise in clause 27 or the IRMP Provisions which form part of this Agreement under clause 3, neither Party is liable to the other under or in connection with this Agreement (including under an indemnity) for any Consequential Loss however caused (including any breach of this Agreement or negligent act or omission of a Party).

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