G - 16th workshop on Elliptic Curve Cryptography
G - 16th workshop on Elliptic Curve Cryptography
G - 16th workshop on Elliptic Curve Cryptography
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Distinguished element technique<br />
• Idea<br />
• Only store distinguished element in DB<br />
• Distinguished element : the x coordinates is divisible by a certain integer q<br />
• Space complexity can be reduced to (√pd/2)/q<br />
• There exists collisi<strong>on</strong>s <strong>on</strong> distinguished elements<br />
G d<br />
collisi<strong>on</strong>!!<br />
G<br />
k1<br />
24<br />
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