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package cz.crcs.ectester.common.ec;
import cz.crcs.ectester.applet.EC_Consts;
/**
* An abstract-like EC key. Concrete implementations create a public and private keys.
*
* @author Jan Jancar johny@neuromancer.sk
*/
public class EC_Key extends EC_Params {
private String curve;
private String desc;
private EC_Key(short mask, String curve) {
super(mask);
this.curve = curve;
}
private EC_Key(short mask, String curve, String desc) {
this(mask, curve);
this.desc = desc;
}
private EC_Key(String id, short mask, String curve, String desc) {
this(mask, curve, desc);
this.id = id;
}
public String getCurve() {
return curve;
}
public String getDesc() {
return desc;
}
/**
* An EC public key, contains the W parameter.
*/
public static class Public extends EC_Key {
public Public(String curve) {
super(EC_Consts.PARAMETER_W, curve);
}
public Public(String curve, String desc) {
super(EC_Consts.PARAMETER_W, curve, desc);
}
public Public(String id, String curve, String desc) {
super(id, EC_Consts.PARAMETER_W, curve, desc);
}
@Override
public String toString() {
return "<" + getId() + "> EC Public key, over " + getCurve() + (getDesc() == null ? "" : ": " + getDesc());
}
}
/**
* An EC private key, contains the S parameter.
*/
public static class Private extends EC_Key {
public Private(String curve) {
super(EC_Consts.PARAMETER_S, curve);
}
public Private(String curve, String desc) {
super(EC_Consts.PARAMETER_S, curve, desc);
}
public Private(String id, String curve, String desc) {
super(id, EC_Consts.PARAMETER_S, curve, desc);
}
@Override
public String toString() {
return "<" + getId() + "> EC Private key, over " + getCurve() + (getDesc() == null ? "" : ": " + getDesc());
}
}
}
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