Key recovery definition

Key recovery. In this scenario, a user (on his own) uses his biometric data w to generate a random key R along with some public information P and then stores P on a (possibly untrusted) server. The key R is then be used, for example, to encrypt some data for long-term storage. At a later point in time, the user obtains a fresh biometric scan w′ along with the value P from the server; together, these values enable recovery of R (and hence enable decryption of the data). In the second setting the user is, in effect, running a key agreement protocol with himself at two points in time, with the (untrusted) server acting as the “communication channel” between these two instances of the user. This second scenario inherently requires a noninteractive (i.e., one-message) key agreement protocol since w is no longer available at the later point in time. Note also that any solution for the second scenario is also a solution for the first. Solutions for achieving secret key agreement using noisy data and an authenticated channel are known [BBR88, BBCM95, JW99, FJ01, LT03, DORS08]. Most of the existing work for an unauthenticated channel, such as [Mau97, MW97, Wol98, MW03, RW03], solves the problem only for two special cases: (1) when W = W ′ and (2) when W and W ′ consist of (arbitrarily-many) independent realizations of the same random experiment; i.e., W = (W (1), W (2), . . .) and W ′ =
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Key recovery. In this scenario, a user utilizes his biometric data w to generate a random key R along with some public information P , and then stores P on a (possibly untrusted) server. The key R is then used, for example, to encrypt some data for long-term storage. At a later point in time, the user obtains a fresh biometric scan wj along with the value P from the server; together, these values enable the user to recover R (and hence decrypt the encrypted data). In the second setting the user is, in effect, running a key agreement protocol with himself at two points in time, with the (untrusted) server acting as the “communication channel” between these two instances of the user. This second scenario inherently requires a noninteractive (i.e., one-message) solution since w is no longer available at the later point in time. Note also that any solution for the second scenario also provides a solution for the first.
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Examples of Key recovery in a sentence

  • Key recovery staff have extensive experience in HUD CDBG, HOME IPP, and CDBG-DR, FEMA PA, FEMA 404 and 406 programs, FHA, USDA, and EPA funded programs.

Related to Key recovery

  • Energy recovery means energy recovery from waste that is conversion of waste material into usable heat, electricity or fuel through a variety of processes including combustion, gasification, pyrolisation, anaerobic digestion and landfill gas recovery ;

  • Postpartum recovery means (a) the entire period a woman or

  • Net Recovery Any proceeds received by a Servicer on a delinquent or Charged Off Loan (including any Liquidation Proceeds received on a Charged Off Loan), net of any Servicing Fee, Ancillary Income and any other related expenses.

  • Subsequent Recovery Any amount recovered by a Servicer or the Master Servicer with respect to a Liquidated Mortgage Loan with respect to which a Realized Loss was incurred after the liquidation or disposition of such Mortgage Loan.

  • Cost recovery means collection, upon approval by the commission pursuant to its authority under section4909.15 of the Revised Code, of such documented EDU interconnection costs that are incurred at reasonable levels for prudent purposes and that are over and above the review processing fees set forth in rules 4901:1-22-06 to 4901:1-22-08 of the Administrative Code.

  • Disaster Recovery shall be defined as the installation and storage of Product in ready-to-execute, back-up computer systems prior to disaster or breakdown which is not used for active production or development.

  • Recovery has the meaning set forth in Section 6.5.

  • Non-PO Recovery As to any Distribution Date and Loan Group, the amount of all Recoveries received with respect to such Loan Group during the calendar month preceding the month of such Distribution Date less the PO Recovery with respect to such Loan Group for such Distribution Date.

  • Resource recovery means the recovery of material or energy from solid waste.

  • Post-consumer recovered material means any product used by a consumer, including a business that purchases the material, that has served its intended end use, and that has been separated or diverted from the solid waste stream for the purpose of use, reuse, or recycling.

  • Disaster Recovery Services means the disaster recovery and/or business continuity services (as the context may require) to be provided by the Supplier pursuant to Schedule 5 (Disaster Recovery and Business Continuity);

  • Government energy aggregation program means a program and

  • Subsequent Recoveries As to any Distribution Date, with respect to a Liquidated Mortgage Loan that resulted in a Realized Loss in a prior calendar month, unexpected amounts received by the Master Servicer (net of any related expenses permitted to be reimbursed pursuant to Section 3.08) specifically related to such Liquidated Mortgage Loan.

  • Net Recoveries means gross Recoveries during any Calendar Quarter minus Reimbursable Expenses during such Calendar Quarter.

  • At-home recovery visit means the period of a visit required to provide at home recovery care, without limit on the duration of the visit, except each consecutive four (4) hours in a twenty-four-hour period of services provided by a care provider is one visit.

  • Towing and recovery operator means a person engaged in the business of (i) removing disabled

  • Lead Securitization PSA means (a) during the period from and after the Note A-2 Securitization Date and prior to the Note A-1 Securitization Date, the Note A-2 PSA and (b) from and after the Note A-1 Securitization Date, the Note A-1 PSA.

  • Stranded costs recovery order means each order issued by the

  • Hovercraft means a vehicle which is designed to be supported when in motion wholly or partly by air expelled from the vehicle to form a cushion of which the boundaries include the ground, water or other surface beneath the vehicle;

  • Recovery Time means additional time incorporated in the Working Timetable to allow a train to regain time lost in delay during an earlier part of its journey;

  • Lead Securitization means, if the First Securitization is the Note A-1 Securitization, such Securitization; provided that, if any other Securitization occurs prior to the Note A-1 Securitization, then the First Securitization shall be the Lead Securitization until such time as the Note A-1 Securitization occurs.

  • Plant Genetic Resources for Food and Agriculture means any genetic material of plant origin of actual or potential value for food and agriculture.

  • Materials recovery facility means a solid waste management facility that provides for the extraction from solid waste of recyclable materials, materials suitable for use as a fuel or soil amendment, or any combination of such materials.

  • Non-Lead Securitization means any Securitization of a Note in a Securitization Trust other than the Lead Securitization.

  • Lead Securitization Servicing Agreement means (i) the pooling and servicing agreement or other comparable agreement related to the Lead Securitization, and (ii) on and after the date on which the Mortgage Loan is no longer subject to the provisions of the Lead Securitization Servicing Agreement, the “Lead Securitization Servicing Agreement” shall be determined in accordance with the second paragraph of Section 2(a).

  • Collection System means software used for the collection, tracking, and reporting of 34 outcomes data for Clients enrolled in the FSP programs.