2009•Information Security and Communications PrivacyRequires access

A Method for Recovery of Private Keys of Encryption Digital Certificates

Xu Liu

Abstract

A method for recovery of private keys of encryption digital certificates is proposed. With the proposed method,while the certificate issuing system issues a certificate to a user,a specific key recovery certificate is employed to encrypt the private key of the certificate,and then the encrypted private key is encoded in a newly-defined private key recovery extension field. When the private key of a user certificate is compromised or lost,the key recovery system,after validating the identity of the user,could recover the key from the extension.

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Key concepts: Public key certificate, Implicit certificate, Computer science, Encryption, Certificate, Root certificate, Public-key cryptography, Computer security