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2362N/A * published by the Free Software Foundation. Oracle designates this
0N/A * particular file as subject to the "Classpath" exception as provided
2362N/A * by Oracle in the LICENSE file that accompanied this code.
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0N/A * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
0N/A * version 2 for more details (a copy is included in the LICENSE file that
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2362N/A * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
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0N/A */
0N/A
0N/Apackage sun.security.rsa;
0N/A
0N/Aimport java.io.IOException;
0N/Aimport java.math.BigInteger;
0N/A
0N/Aimport java.security.*;
0N/Aimport java.security.interfaces.*;
0N/A
0N/Aimport sun.security.util.*;
0N/Aimport sun.security.pkcs.PKCS8Key;
0N/A
0N/A/**
0N/A * Key implementation for RSA private keys, non-CRT form (modulus, private
0N/A * exponent only). For CRT private keys, see RSAPrivateCrtKeyImpl. We need
0N/A * separate classes to ensure correct behavior in instanceof checks, etc.
0N/A *
0N/A * Note: RSA keys must be at least 512 bits long
0N/A *
0N/A * @see RSAPrivateCrtKeyImpl
0N/A * @see RSAKeyFactory
0N/A *
0N/A * @since 1.5
0N/A * @author Andreas Sterbenz
0N/A */
0N/Apublic final class RSAPrivateKeyImpl extends PKCS8Key implements RSAPrivateKey {
0N/A
0N/A private static final long serialVersionUID = -33106691987952810L;
0N/A
0N/A private final BigInteger n; // modulus
0N/A private final BigInteger d; // private exponent
0N/A
0N/A /**
0N/A * Construct a key from its components. Used by the
0N/A * RSAKeyFactory and the RSAKeyPairGenerator.
0N/A */
0N/A RSAPrivateKeyImpl(BigInteger n, BigInteger d) throws InvalidKeyException {
0N/A this.n = n;
0N/A this.d = d;
1111N/A RSAKeyFactory.checkRSAProviderKeyLengths(n.bitLength(), null);
0N/A // generate the encoding
0N/A algid = RSAPrivateCrtKeyImpl.rsaId;
0N/A try {
0N/A DerOutputStream out = new DerOutputStream();
0N/A out.putInteger(0); // version must be 0
0N/A out.putInteger(n);
0N/A out.putInteger(0);
0N/A out.putInteger(d);
0N/A out.putInteger(0);
0N/A out.putInteger(0);
0N/A out.putInteger(0);
0N/A out.putInteger(0);
0N/A out.putInteger(0);
0N/A DerValue val =
0N/A new DerValue(DerValue.tag_Sequence, out.toByteArray());
0N/A key = val.toByteArray();
0N/A } catch (IOException exc) {
0N/A // should never occur
0N/A throw new InvalidKeyException(exc);
0N/A }
0N/A }
0N/A
0N/A // see JCA doc
0N/A public String getAlgorithm() {
0N/A return "RSA";
0N/A }
0N/A
0N/A // see JCA doc
0N/A public BigInteger getModulus() {
0N/A return n;
0N/A }
0N/A
0N/A // see JCA doc
0N/A public BigInteger getPrivateExponent() {
0N/A return d;
0N/A }
0N/A
0N/A // return a string representation of this key for debugging
0N/A public String toString() {
0N/A return "Sun RSA private key, " + n.bitLength() + " bits\n modulus: "
0N/A + n + "\n private exponent: " + d;
0N/A }
0N/A
0N/A}