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Inventor: Takagi; Tsuyoshi
Address: Hofheim-Wallau, DE
No. of patents: 2
Patents:
| Patent Number |
Title Of Patent |
Date Issued |
| 7555122 |
Method for elliptic curve point multiplication |
June 30, 2009 |
| The method comprises three stages. In the first stage, randomly selected point representations are stored in variables. In the second stage, a right-to-left loop is executed that modifies the variable values in dependency of a multiplier. In the last stage, the result is calculated f |
| 7512231 |
Computation method for modular exponentiation operation in decryption or signature generation |
March 31, 2009 |
| 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 conv |
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