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examples: add compatibility example for Groth16 veification

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Port the C# contract provided in the
https://github.com/neo-project/neo/issues/2647#issuecomment-1129849870 and
add an integration test for it. Part of the #3002.

Signed-off-by: Anna Shaleva <shaleva.ann@nspcc.ru>
This commit is contained in:
Anna Shaleva 2023-07-29 14:02:33 +03:00
parent 4598f3d3c2
commit 0a3260c22c
8 changed files with 135 additions and 0 deletions
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2
pkg/core/native/crypto.go
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@ -231,6 +231,8 @@ func scalarFromBytes(bytes []byte, neg bool) (*fr.Element, error) {
}
// The input bytes are in the LE form, so we can't use fr.Element.SetBytesCanonical as far
// as it accepts BE.
// TODO: ensure that LE is really used in the C# node. More common way is to use BE form, and these
// lines of code are here only because that's the way how C# example works (https://github.com/neo-project/neo/issues/2647#issuecomment-1129849870).
v, err := fr.LittleEndian.Element((*[fr.Bytes]byte)(bytes))
if err != nil {
return nil, fmt.Errorf("invalid multiplier: failed to decode scalar: %w", err)