METHODS AND SYSTEMS OF REVOKING AN ATTESTATION TRANSACTION USING A CENTRALIZED OR DISTRIBUTED LEDGER

• US 20170316390A1
• Filed: 04/28/2017
• Published: 11/02/2017
• Est. Priority Date: 04/30/2016
• Status: Abandoned Application

• Current Assignee: Civic Technologies, Inc.
• Original Assignee: Civic Technologies, Inc.
• Inventors: Smith, Jonathan Robert, Lingham, Vinodan Karthikeya, Driscoll, John, Fraser, Iain Charles
• Application Number:
  US15/582,110
• Publication Number:
  US 20170316390A1
• Time in Patent Office: Days
• CPC Class Codes: G06Q 20/02 involving a neutral party, e.g. certification authority, notary or trusted third party [TTP]
• CPC Class Codes: G06Q 20/065 using e-cash
• CPC Class Codes: G06Q 20/308 using the Internet of Things
• CPC Class Codes: G06Q 20/3276 using a pictured code, e.g. barcode or QR-code, being read by the M-device
• CPC Class Codes: G06Q 20/3278 RFID or NFC payments by means of M-devices
• CPC Class Codes: G06Q 20/3674 involving authentication
• CPC Class Codes: G06Q 20/38215 Use of certificates or encrypted proofs of transaction rights
• CPC Class Codes: G06Q 20/3829 involving key management
• CPC Class Codes: G06Q 20/4015 using location information
• CPC Class Codes: G06Q 20/407 Cancellation of a transaction
• CPC Class Codes: G06Q 2220/00 Business processing using cryptography postage metering system using cryptography G06Q2250/05
• CPC Class Codes: H04L 2209/56 Financial cryptography, e.g. electronic payment or e-cash
• CPC Class Codes: H04L 63/0435 wherein the sending and receiving network entities apply symmetric encryption, i.e. same key used for encryption and decryption cryptographic mechanisms or cryptographic arrangements for symmetric key encryption H04L9/06
• CPC Class Codes: H04L 63/0442 wherein the sending and receiving network entities apply asymmetric encryption, i.e. different keys for encryption and decryption cryptographic mechanisms or cryptographic arrangements for public-key encryption H04L9/30
• CPC Class Codes: H04L 63/0492 by using a location-limited connection, e.g. near-field communication or limited proximity of entities
• CPC Class Codes: H04L 63/061 for key exchange, e.g. in peer-to-peer networks cryptographic mechanisms or cryptographic arrangements for key agreement H04L9/0838
• CPC Class Codes: H04L 63/0823 using certificates cryptographic mechanisms or cryptographic arrangements for entity authentication involving certificates H04L9/3263
• CPC Class Codes: H04L 9/0637 Modes of operation, e.g. cipher block chaining [CBC], electronic codebook [ECB] or Galois/counter mode [GCM]
• CPC Class Codes: H04L 9/0861 Generation of secret information including derivation or calculation of cryptographic keys or passwords
• CPC Class Codes: H04L 9/0891 Revocation or update of secret information, e.g. encryption key update or rekeying
• CPC Class Codes: H04L 9/14 : using a plurality of keys or algorithms
• CPC Class Codes: H04L 9/30 : Public key, i.e. encryption algorithm being computationally infeasible to invert or user's encryption keys not requiring secrecy
• CPC Class Codes: H04L 9/3066 : involving algebraic varieties, e.g. elliptic or hyper-elliptic curves
• CPC Class Codes: H04L 9/3236 : using cryptographic hash functions
• CPC Class Codes: H04L 9/3239 : involving non-keyed hash functions, e.g. modification detection codes [MDCs], MD5, SHA or RIPEMD
• CPC Class Codes: H04L 9/3242 : involving keyed hash functions, e.g. message authentication codes [MACs], CBC-MAC or HMAC
• CPC Class Codes: H04L 9/3247 : involving digital signatures
• CPC Class Codes: H04L 9/3271 : using challenge-response
• CPC Class Codes: H04L 9/50 : using hash chains, e.g. blockchains or hash trees

Abstract

A method and system of revoking an attestation transaction regarding information of a user is provided. The method is implemented on a computer system having one or more physical processors configured by machine-readable instructions which, when executed perform the method, including generating a signed revocation transaction to revoke the previously attested information, wherein the information has been previously attested to in an attestation transaction stored within a centralized or distributed ledger at an attestation address, the centralized or distributed ledger providing a verifiable record of transactions; and sending the signed revocation transaction to the centralized or distributed ledger and revoking the attestation transaction by spending cryptocurrency associated with the attestation transaction.

Claims

1. A method of revoking an attestation transaction regarding information of a user, the method being implemented on a computer system having one or more physical processors configured by machine-readable instructions which, when executed perform the method, comprising:

generating a signed revocation transaction to revoke the previously attested information, wherein the information has been previously attested to in an attestation transaction stored within a centralized or distributed ledger at an attestation address, the centralized or distributed ledger providing a verifiable record of transactions; and

sending the signed revocation transaction to the centralized or distributed ledger and revoking the attestation transaction by spending cryptocurrency associated with the attestation transaction.

2. The method of claim 1, further comprising receiving a public key generated for the information;

combining a hash of the information with the public key to generate a public attest key; and

generating the attestation address based on the public attest key.

3. The method of claim 1, wherein generating the signed transaction comprises using a public key of the user.

4. The method of claim 1, further comprises providing a third party having a relationship with a user, the method further comprising receiving a request for revocation from the third party because a relationship between the user and the third party has become invalid.

5. The method of claim 1, wherein a processor associated with the user generates the signed transaction which spends the cryptocurrency or dust associated with the existing attestation.

6. The method of claim 1, further comprising providing a processor associated with an attestor for generating the attestation address associated with the attestation transaction.

7. The method of claim 6, wherein generating the signed transaction comprises using at least one of a public key of the user and a public key of the attestor.

8. The method of claim 6, wherein generating the signed transaction comprises using at least one of a public key of the user, a public key of the attestor, and a public key of a third party.

9. The method of claim 6, wherein the previously attested information to be revoked comprises at least a portion of the previously attested information that is no longer valid.

10. The method of claim 6, wherein spending cryptocurrency associated with the attestation transaction comprises transferring cryptocurrency to a wallet associated with the attestor.

11. The method of claim 6, wherein the processor associated with the attestor generates the signed transaction which spends the cryptocurrency or dust associated with a transaction.

12. The method of claim 6, wherein a processor associated with the user performs the step of identifying previously attested information to be revoked, and

wherein the processor associated with the attestor performs the steps of generating a signed revocation transaction to revoke the previously attested information;

and broadcasting the signed revocation transaction to the centralized or distributed ledger and revoking the attestation transaction.

13. A method of revoking an attestation transaction regarding information of a user, the method being implemented on a computer system having one or more physical processors configured by machine-readable instructions which, when executed perform the method, comprising:

generating a signed revocation transaction to revoke the previously attested information, wherein the information has been previously attested to in an attestation transaction stored within a centralized or distributed ledger at an attestation address, the centralized or distributed ledger providing a verifiable record of transactions;

sending the signed revocation transaction to the centralized or distributed ledger and revoking the attestation transaction by spending cryptocurrency associated with the attestation transaction; and

if there is new information to be attested to, generating a second attestation address associated with a second attestation transaction;

14. The method of claim 13, further comprising prior to generating a second attestation address, determining whether there is new information for attestation.

15. The method of claim 13, wherein generating a second attestation address comprises:

receiving a public key generated for the new information;

combining a hash of the new information with the public key to generate a public attest key; and

generating the second attestation address based on the public attest key.

16. The method of claim 13, wherein the new information comprises previously attested information to be revoked.

17. The method of claim 13, wherein the new information is associated with a different user than the previously attested information to be revoked.

18. The method of claim 13, further comprising providing a processor associated with an attestor for generating the second attestation address associated with the second attestation transaction based on the information.

19. The method of claim 13, further comprising generating a signed attestation using at least one of a public key of the user, a public key of the attestor, and a public key of a third party.

20. A system of revoking an attestation transaction regarding information of a user, the system comprising

a computer system having one or more physical processors configured by machine-readable instructions to:

generate a signed revocation transaction to revoke the previously attested information, wherein the information has been previously attested to in an attestation transaction stored within a centralized or distributed ledger at an attestation address, the centralized or distributed ledger providing a verifiable record of transactions; and

send the signed revocation transaction to the centralized or distributed ledger and revoking the attestation transaction by spending cryptocurrency associated with the attestation transaction.