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    • 3. 发明授权
    • Data processing apparatus
    • 数据处理装置
    • US07788487B2
    • 2010-08-31
    • US10580818
    • 2004-11-26
    • Takayuki ItoTeruto HirotaKouichi KanemuraTomoyuki HagaYoshikatsu Ito
    • Takayuki ItoTeruto HirotaKouichi KanemuraTomoyuki HagaYoshikatsu Ito
    • H04L29/06G06F7/04G06F13/00
    • G06F9/4812G06F9/468G06F21/78G06F2221/2105
    • In a data processing apparatus that switches between a secure mode and a normal mode during execution, the secure mode allowing access to secure resources to be protected, the normal mode not allowing access to the secure resources, when the secure resources increase in the secure mode, the load on a protection mechanism for protecting the resources becomes large. Thus, there is a demand for data processing apparatuses that are able to reduce secure resources.The present invention relates to a data processing apparatus that stores therein a secure program including one or more processing procedures which use secure resources and a call instruction for calling a normal program to be executed in a normal mode. While executing the secure program, the data processing apparatus calls the normal program with the call instruction and operates according to the called normal program.
    • 在执行期间在安全模式和正常模式之间切换的数据处理装置中,当安全模式下的安全资源增加时,安全模式允许访问保护资源以被保护,正常模式不允许访问安全资源 用于保护资源的保护机制的负担变大。 因此,需要能够减少安全资源的数据处理装置。 数据处理装置本发明涉及一种数据处理装置,其中存储有一个或多个使用安全资源的处理过程的安全程序和用于调用在正常模式下执行的正常程序的呼叫指令。 在执行安全程序时,数据处理装置利用呼叫指令调用正常程序,并根据所调用的正常程序进行操作。
    • 5. 发明申请
    • Data processing apparatus
    • 数据处理装置
    • US20070113079A1
    • 2007-05-17
    • US10580818
    • 2004-11-26
    • Takayuki ItoTeruto HirotaKouichi KanemuraTomoyuki HagaYoshikatsu Ito
    • Takayuki ItoTeruto HirotaKouichi KanemuraTomoyuki HagaYoshikatsu Ito
    • H04L9/00
    • G06F9/4812G06F9/468G06F21/78G06F2221/2105
    • In a data processing apparatus that switches between a secure mode and a normal mode during execution, the secure mode allowing access to secure resources to be protected, the normal mode not allowing access to the secure resources, when the secure resources increase in the secure mode, the load on a protection mechanism for protecting the resources becomes large. Thus, there is a demand for data processing apparatuses that are able to reduce secure resources. The present invention relates to a data processing apparatus that stores therein a secure program including one or more processing procedures which use secure resources and a call instruction for calling a normal program to be executed in a normal mode. While executing the secure program, the data processing apparatus calls the normal program with the call instruction and operates according to the called normal program.
    • 在执行期间在安全模式和正常模式之间切换的数据处理装置中,当安全模式下的安全资源增加时,安全模式允许访问保护资源以被保护,正常模式不允许访问安全资源 用于保护资源的保护机制的负担变大。 因此,需要能够减少安全资源的数据处理装置。 数据处理装置本发明涉及一种数据处理装置,其中存储有一个或多个使用安全资源的处理过程的安全程序和用于调用在正常模式下执行的正常程序的呼叫指令。 在执行安全程序时,数据处理装置利用呼叫指令调用正常程序,并根据所调用的正常程序进行操作。
    • 8. 发明授权
    • Secure processing device, method and program
    • 安全处理设备,方法和程序
    • US07650515B2
    • 2010-01-19
    • US12160281
    • 2007-02-02
    • Takayuki ItoYoshikatsu Ito
    • Takayuki ItoYoshikatsu Ito
    • G06F11/30G06F12/14
    • H04L9/3236H04L2209/603
    • A secure processing device having a power saving mode, which is used for built-in apparatuses, calculates a hash value of secure data that needs to be saved when switching to the power saving mode, stores the calculated hash value in a protection storage unit whose data is not lost even in the power saving mode, encrypts the secure data and stores the encrypted data in an external memory when switching to the power saving mode. When switching back to the normal power mode, the secure processing device decrypts the encrypted data, calculates a hash value of the decrypted data and compares the hash value with the hash value stored in the protection storage unit. The decrypted data is restored to the protection storage unit when the hash values are identical, but discarded together with the encrypted data stored in the external memory when the hash values are not identical.
    • 具有省电模式的安全处理装置,用于内置装置,计算切换到省电模式时需要保存的安全数据的哈希值,将计算出的散列值存储在保护存储部中, 即使在省电模式下数据也不会丢失,在切换到省电模式时,加密安全数据并将加密数据存储在外部存储器中。 当切换回正常功率模式时,安全处理装置解密加密数据,计算解密数据的散列值,并将哈希值与存储在保护存储单元中的散列值进行比较。 当哈希值相同时,解密的数据被恢复到保护存储单元,但是当哈希值不相同时,被解密的数据与存储在外部存储器中的加密数据一起被丢弃。