ENCRYPTION PROCESSING DEVICE AND METHOD
First Claim
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1. An encryption processing device comprising:
- a memory configured to store a first secret key and a first agitation value operated with the first secret key; and
a processor coupled to the memory and configured to;
receive a first random number,generate a second agitation key based on the first secret key and the first agitation value,generate a first encryption information based on the second secret key and the first random number,update the first agitation value stored in the memory, andoutput the first agitation value and the first encryption information.
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Abstract
An encryption processing device includes: a memory configured to store a first secret key and a first agitation value operated with the first secret key; and a processor coupled to the memory and configured to: receive a first random number, generate a second agitation key based on the first secret key and the first agitation value, generate a first encryption information based on the second secret key and the first random number, update the first agitation value stored in the memory, and output the first agitation value and the first encryption information.
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Citations
18 Claims
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1. An encryption processing device comprising:
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a memory configured to store a first secret key and a first agitation value operated with the first secret key; and a processor coupled to the memory and configured to; receive a first random number, generate a second agitation key based on the first secret key and the first agitation value, generate a first encryption information based on the second secret key and the first random number, update the first agitation value stored in the memory, and output the first agitation value and the first encryption information. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16)
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17. An encryption processing method executed by an encryption processing device, the encryption processing method comprising:
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receiving a first random number; storing a first secret key and a first agitation value operated with the first secret key in a memory; generating a second secret key based on the first secret key and the first agitation value; generating a first encryption information based on the second secret key and the first random number; updating the first agitation value stored in the memory; and outputting the first encryption information and the first agitation value.
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18. A readable recording medium storing an encryption processing program including a process and for causing an encryption processing device execute the program, the process comprising:
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receiving a first random number; storing a first secret key and a first agitation value operated with the first secret key in a memory; generating a second secret key based on the first secret key and the first agitation value; generating a first encryption information based on the second secret key and the first random number; updating the first agitation value stored in the memory; and outputting the first agitation value and the first encryption information.
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Specification