Daira Hopwood
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fd7283a979
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Make map_to_curve_simple_swu take a single input again (since we no longer need batch inversion).
Also make it clearer that we don't depend on Sage's elliptic curve impl except for debugging.
Signed-off-by: Daira Hopwood <daira@jacaranda.org>
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2021-01-02 00:50:42 +00:00 |
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Daira Hopwood
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c0f2b2d8b6
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Correct a comment.
Signed-off-by: Daira Hopwood <daira@jacaranda.org>
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2021-01-02 00:20:36 +00:00 |
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Daira Hopwood
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4a3a34feea
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Improve comments and cost accounting.
Signed-off-by: Daira Hopwood <daira@jacaranda.org>
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2021-01-01 19:44:32 +00:00 |
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Daira Hopwood
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50d3e83467
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Implement the optimization from [WB2019, section 4.2] that removes the remaining inversion.
Signed-off-by: Daira Hopwood <daira@jacaranda.org>
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2021-01-01 03:37:41 +00:00 |
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Daira Hopwood
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391e67f250
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hashtocurve.sage: correct a comment.
Signed-off-by: Daira Hopwood <daira@jacaranda.org>
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2020-12-31 15:26:20 +00:00 |
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Daira Hopwood
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112983e667
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hashtocurve: allow use of the sqrt optimization with the Z recommended by the Internet Draft.
This also makes the sqrt and hash-to-curve implementations depend on each other less strongly.
Signed-off-by: Daira Hopwood <daira@jacaranda.org>
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2020-12-31 13:45:35 +00:00 |
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Daira Hopwood
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ef3405dd20
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Add an optimization from [WB2019, section 4.2] that saves a square root for each map_to_curve.
Signed-off-by: Daira Hopwood <daira@jacaranda.org>
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2020-12-31 03:35:50 +00:00 |
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Daira Hopwood
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71afc68f7d
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hashtocurve.sage: add Jacobian coordinate implementation that avoids two of the three inversions.
Do not base production code on this yet!
Signed-off-by: Daira Hopwood <daira@jacaranda.org>
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2020-12-30 16:09:25 +00:00 |
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Daira Hopwood
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7df33f4ce4
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hashtocurve.sage: more realistic use of Montgomery's trick.
Signed-off-by: Daira Hopwood <daira@jacaranda.org>
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2020-12-29 17:58:50 +00:00 |
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Daira Hopwood
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96fd2c794e
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[WIP] Add a prototype implementation of hash-to-curve. This intends to implement the Internet Draft but has not been checked.
Signed-off-by: Daira Hopwood <daira@jacaranda.org>
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2020-12-29 17:58:50 +00:00 |