jdk/src/share/classes/java/security/spec/ECField.java

/*
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 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
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 * published by the Free Software Foundation.  Sun designates this
 * particular file as subject to the "Classpath" exception as provided
 * by Sun in the LICENSE file that accompanied this code.
 *
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 * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
 * version 2 for more details (a copy is included in the LICENSE file that
 * accompanied this code).
 *
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package java.security.spec;

import java.math.BigInteger;
import java.util.Arrays;

/**
 * This interface represents an elliptic curve (EC) finite field.
 * All specialized EC fields must implements this interface.
 *
 * @see ECFieldFp
 * @see ECFieldF2m
 *
 * @author Valerie Peng
 *
 * @since 1.5
 */
public interface ECField {
    /**
     * Returns the field size in bits. Note: For prime finite
     * field ECFieldFp, size of prime p in bits is returned.
     * For characteristic 2 finite field ECFieldF2m, m is returned.
     * @return the field size in bits.
     */
    int getFieldSize();
}