发明名称 |
Securely classifying data |
摘要 |
Techniques are disclosed for securely classifying or decoding data. By way of example, a method of determining a most likely sequence for a given data set comprises a computer system associated with a first party performing the following steps. An encrypted model is obtained from a second party. The encrypted model is utilized to determine cost values associated with a particular sequence of observed outputs associated with the given data set. The cost values are sent to the second party. At least one index of a minimum cost value determined by the second party from the cost values sent thereto is obtained from the second party. A minimum cost sequence resulting from the at least one index is determined as the most likely sequence. |
申请公布号 |
US8903090(B2) |
申请公布日期 |
2014.12.02 |
申请号 |
US200812111538 |
申请日期 |
2008.04.29 |
申请人 |
International Business Machines Corporation |
发明人 |
Bikel Daniel Martin;Sorensen Jeffrey Scott |
分类号 |
H04L29/06;H04L9/30 |
主分类号 |
H04L29/06 |
代理机构 |
Ryan, Mason & Lewis, LLP |
代理人 |
Dougherty Anne V.;Ryan, Mason & Lewis, LLP |
主权项 |
1. A method for securely decoding data, the method comprising a computer system associated with a first party performing steps of:
obtaining from a second party an encrypted model of a process for decoding data, wherein the encrypted model is a state machine-based model defined by one or more model parameters and wherein the one or more model parameters are encrypted so that the first party cannot learn the model parameters; utilizing the encrypted model parameters of the encrypted model to determine cost values which represent a particular sequence of observed outputs associated with a given data set of information that the first party wants to maintain as confidential and personal, which is to be decoded using the state machine-based model, without revealing content of the data set to the second party; sending to the second party the cost values; obtaining from the second party at least one index of a minimum cost value determined by the second party from the cost values sent thereto; and determining, as a most likely sequence for the given data set, a minimum cost sequence resulting from the at least one index; wherein the steps of obtaining, utilizing, sending, obtaining and determining are performed by the computer system executing program code, which is associated with the first party. |
地址 |
Armonk NY US |