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| author | Cherry Mui <cherryyz@google.com> | 2022-02-11 14:58:56 +0000 |
|---|---|---|
| committer | Cherry Mui <cherryyz@google.com> | 2022-02-11 14:58:56 +0000 |
| commit | e90b835f3071f1eb71810a3631b792f23df59f24 (patch) | |
| tree | dc5a1c1620f14dbc051402095af9c024bc12a202 /src/crypto/elliptic/elliptic.go | |
| parent | bb93480d009322886df6f5185c988d6d21fdc2c8 (diff) | |
| parent | 0a6cf8706fdd0fe1bd26e4d1ecbcd41650bf5e6c (diff) | |
| download | go-e90b835f3071f1eb71810a3631b792f23df59f24.tar.gz go-e90b835f3071f1eb71810a3631b792f23df59f24.zip | |
[dev.boringcrypto.go1.16] all: merge go1.16.14 into dev.boringcrypto.go1.16
Change-Id: I186a567b3e76df7ecf1842634a3851eab7c9dfce
Diffstat (limited to 'src/crypto/elliptic/elliptic.go')
| -rw-r--r-- | src/crypto/elliptic/elliptic.go | 5 |
1 files changed, 5 insertions, 0 deletions
diff --git a/src/crypto/elliptic/elliptic.go b/src/crypto/elliptic/elliptic.go index f93dc16419..afedf18df1 100644 --- a/src/crypto/elliptic/elliptic.go +++ b/src/crypto/elliptic/elliptic.go @@ -71,6 +71,11 @@ func (curve *CurveParams) polynomial(x *big.Int) *big.Int { } func (curve *CurveParams) IsOnCurve(x, y *big.Int) bool { + if x.Sign() < 0 || x.Cmp(curve.P) >= 0 || + y.Sign() < 0 || y.Cmp(curve.P) >= 0 { + return false + } + // y² = x³ - 3x + b y2 := new(big.Int).Mul(y, y) y2.Mod(y2, curve.P) |