net.i2p.crypto

Class ECUtil

java.lang.Object

net.i2p.crypto.ECUtil

final class ECUtil
extends Object

Elliptic curve utility functions for cryptographic operations. This class provides essential mathematical operations for elliptic curve cryptography used throughout I2P, including scalar multiplication, point operations, and curve parameter handling. It supports multiple curve types with optimized implementations for common cryptographic operations.

Key operations include:

• Scalar multiplication of curve points
• Point addition and doubling operations
• Curve parameter validation and extraction
• Support for standard NIST curves (P-192, P-256, P-384, P-521)

Constructor Summary

Constructors

Constructor and Description
ECUtil()

Method Summary

Modifier and Type	Method and Description
static ECPoint	scalarMult(ECPoint p, BigInteger kin, EllipticCurve curve)

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Constructor Detail

ECUtil

ECUtil()

Method Detail

scalarMult

public static ECPoint scalarMult(ECPoint p,
                                 BigInteger kin,
                                 EllipticCurve curve)