| // Copyright (c) 2021 The Go Authors. All rights reserved. | |
| // Use of this source code is governed by a BSD-style | |
| // license that can be found in the LICENSE file. | |
| // Package edwards25519 implements group logic for the twisted Edwards curve | |
| // | |
| // -x^2 + y^2 = 1 + -(121665/121666)*x^2*y^2 | |
| // | |
| // This is better known as the Edwards curve equivalent to Curve25519, and is | |
| // the curve used by the Ed25519 signature scheme. | |
| // | |
| // Most users don't need this package, and should instead use crypto/ed25519 for | |
| // signatures, golang.org/x/crypto/curve25519 for Diffie-Hellman, or | |
| // github.com/gtank/ristretto255 for prime order group logic. | |
| // | |
| // However, developers who do need to interact with low-level edwards25519 | |
| // operations can use filippo.io/edwards25519, an extended version of this | |
| // package repackaged as an importable module. | |
| // | |
| // (Note that filippo.io/edwards25519 and github.com/gtank/ristretto255 are not | |
| // maintained by the Go team and are not covered by the Go 1 Compatibility Promise.) | |
| package edwards25519 | |