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opt
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golang
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1.22.0
/
src
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crypto
/
elliptic
/
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..
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elliptic.go
(9.02 KB)
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elliptic_test.go
(11.58 KB)
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nistec.go
(9.55 KB)
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nistec_p256.go
(696 B)
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p224_test.go
(10.7 KB)
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p256_test.go
(4.15 KB)
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params.go
(9.58 KB)
Editing: nistec_p256.go
// Copyright 2022 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. //go:build amd64 || arm64 package elliptic import ( "crypto/internal/nistec" "math/big" ) func (c p256Curve) Inverse(k *big.Int) *big.Int { if k.Sign() < 0 { // This should never happen. k = new(big.Int).Neg(k) } if k.Cmp(c.params.N) >= 0 { // This should never happen. k = new(big.Int).Mod(k, c.params.N) } scalar := k.FillBytes(make([]byte, 32)) inverse, err := nistec.P256OrdInverse(scalar) if err != nil { panic("crypto/elliptic: nistec rejected normalized scalar") } return new(big.Int).SetBytes(inverse) }
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