초록 ▼

Disclosed is a method and apparatus of securely providing data to a user's system. The data is encrypted so as to only be decryptable by a data decrypting key, the data decrypting key being encrypted using a first public key, and the encrypted data being accessible to the user's system, the method c

Disclosed is a method and apparatus of securely providing data to a user's system. The data is encrypted so as to only be decryptable by a data decrypting key, the data decrypting key being encrypted using a first public key, and the encrypted data being accessible to the user's system, the method comprising the steps of: transferring the encrypted data decrypting key to a clearing house that possesses a first private key, which corresponds to the first public key; decrypting the data decrypting key using the first private key; re-encrypting the data decrypting key using a second public key; transferring the re-encrypted data decrypting key to the user's system, the user's system possessing a second private key, which corresponds to the second public key; and decrypting the re-encrypted data decrypting key using the second private key.

대표청구항 ▼

[ What is claimed is:] [1.]1. A method of securely providing data to a user's system, said method comprising the steps of:encrypting the data using a first encrypting key;encrypting a first decrypting key using a second encrypting key;transferring the encrypted data, which has been encrypted with th

[ What is claimed is:] [1.]1. A method of securely providing data to a user's system, said method comprising the steps of:encrypting the data using a first encrypting key;encrypting a first decrypting key using a second encrypting key;transferring the encrypted data, which has been encrypted with the first encrypting key, to the user's system;transferring the encrypted first decrypting key, which has been encrypted with the second encrypting key, to the user's system;transferring the encrypted first decrypting key, which has been encrypted with the second encrypting key, to a clearing house that possesses a second decrypting key;decrypting the first decrypting key using the second decrypting key; andtransferring the decrypted first decrypting key to the user's system.