Write the section on curve mappings.

cfrg / draft-irtf-cfrg-hash-to-curve

Hashing to Elliptic Curves

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Write the section on curve mappings. #3

Closed chris-wood closed 5 years ago

chris-wood commented 6 years ago

It's often useful to transform a Montgomery curve to a Weierstrass curve, and vice versa. We should provide details on how to do this.

samscott89 commented 6 years ago

Should also include transforming to (twisted) Edwards curve as well. We will probably also need to mention different coordinate systems.

samscott89 commented 6 years ago

(Coordinate systems, related to #4 )

samscott89 commented 5 years ago

Ideally this should just be a reference to some other document on how to transform. Otherwise it gets quite far away from the scope of the document, and starts being a complete doc on elliptic curves... I couldn't find anything suitable however.

samscott89 commented 5 years ago

From the meeting:

Keep it brief, if you wish to use combinations not specified in this doc, there exist transformations (+ some minimal details).
The recommendations we present should obviate the need for applying transformations/composing alogrithms, since we specify precisely those recommended algorithms.

grittygrease commented 5 years ago

Please close if the section is deemed complete.