65 lines
2.3 KiB
Java
65 lines
2.3 KiB
Java
package org.bouncycastle.math.ec.custom.djb;
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import java.math.BigInteger;
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import org.bouncycastle.math.ec.ECCurve;
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import org.bouncycastle.math.ec.ECFieldElement;
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import org.bouncycastle.math.ec.ECPoint;
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import org.bouncycastle.math.raw.Nat256;
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import org.bouncycastle.util.encoders.Hex;
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/* loaded from: classes6.dex */
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public class Curve25519 extends ECCurve.AbstractFp {
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private static final int Curve25519_DEFAULT_COORDS = 4;
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public static final BigInteger q = Nat256.toBigInteger(Curve25519Field.P);
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protected Curve25519Point infinity;
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@Override // org.bouncycastle.math.ec.ECCurve
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public boolean supportsCoordinateSystem(int i) {
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return i == 4;
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}
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public BigInteger getQ() {
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return q;
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}
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@Override // org.bouncycastle.math.ec.ECCurve
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public ECPoint getInfinity() {
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return this.infinity;
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}
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@Override // org.bouncycastle.math.ec.ECCurve
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public int getFieldSize() {
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return q.bitLength();
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}
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@Override // org.bouncycastle.math.ec.ECCurve
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public ECFieldElement fromBigInteger(BigInteger bigInteger) {
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return new Curve25519FieldElement(bigInteger);
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}
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@Override // org.bouncycastle.math.ec.ECCurve
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public ECPoint createRawPoint(ECFieldElement eCFieldElement, ECFieldElement eCFieldElement2, ECFieldElement[] eCFieldElementArr, boolean z) {
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return new Curve25519Point(this, eCFieldElement, eCFieldElement2, eCFieldElementArr, z);
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}
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@Override // org.bouncycastle.math.ec.ECCurve
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public ECPoint createRawPoint(ECFieldElement eCFieldElement, ECFieldElement eCFieldElement2, boolean z) {
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return new Curve25519Point(this, eCFieldElement, eCFieldElement2, z);
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}
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@Override // org.bouncycastle.math.ec.ECCurve
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public ECCurve cloneCurve() {
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return new Curve25519();
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}
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public Curve25519() {
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super(q);
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this.infinity = new Curve25519Point(this, null, null);
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this.a = fromBigInteger(new BigInteger(1, Hex.decode("2AAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA984914A144")));
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this.b = fromBigInteger(new BigInteger(1, Hex.decode("7B425ED097B425ED097B425ED097B425ED097B425ED097B4260B5E9C7710C864")));
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this.order = new BigInteger(1, Hex.decode("1000000000000000000000000000000014DEF9DEA2F79CD65812631A5CF5D3ED"));
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this.cofactor = BigInteger.valueOf(8L);
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this.coord = 4;
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}
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}
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