发明授权
- 专利标题: Computation method for modular exponentiation operation in decryption or signature generation
- 专利标题(中): 用于解密或签名生成中的模幂运算的计算方法
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申请号: US10893523申请日: 2004-07-19
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公开(公告)号: US07512231B2公开(公告)日: 2009-03-31
- 发明人: Katsuyuki Okeya , Tsuyoshi Takagi
- 申请人: Katsuyuki Okeya , Tsuyoshi Takagi
- 申请人地址: JP Tokyo
- 专利权人: Hitachi, Ltd.
- 当前专利权人: Hitachi, Ltd.
- 当前专利权人地址: JP Tokyo
- 代理机构: McDermott Will & Emery LLP
- 优先权: JP2004-001602 20040107
- 主分类号: H04L9/28
- IPC分类号: H04L9/28
摘要:
A decryption method of decrypting a plaintext m from a secret exponent d, a public key n, and a ciphertext c includes steps of converting the ciphertext c into a randomized ciphertext t, a step of converting the randomized ciphertext t into a randomized plaintext u, and steps of converting the randomized plaintext u into the plaintext m.
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