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Diffstat (limited to 'pki/base/util/src/netscape/security/x509/AlgIdDSA.java')
| -rw-r--r-- | pki/base/util/src/netscape/security/x509/AlgIdDSA.java | 185 |
1 files changed, 0 insertions, 185 deletions
diff --git a/pki/base/util/src/netscape/security/x509/AlgIdDSA.java b/pki/base/util/src/netscape/security/x509/AlgIdDSA.java deleted file mode 100644 index 0a64ad37b..000000000 --- a/pki/base/util/src/netscape/security/x509/AlgIdDSA.java +++ /dev/null @@ -1,185 +0,0 @@ -// --- BEGIN COPYRIGHT BLOCK --- -// This program is free software; you can redistribute it and/or modify -// it under the terms of the GNU General Public License as published by -// the Free Software Foundation; version 2 of the License. -// -// This program is distributed in the hope that it will be useful, -// but WITHOUT ANY WARRANTY; without even the implied warranty of -// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the -// GNU General Public License for more details. -// -// You should have received a copy of the GNU General Public License along -// with this program; if not, write to the Free Software Foundation, Inc., -// 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA. -// -// (C) 2007 Red Hat, Inc. -// All rights reserved. -// --- END COPYRIGHT BLOCK --- -package netscape.security.x509; - -import java.io.IOException; -import java.math.BigInteger; -import java.security.ProviderException; -import java.security.interfaces.DSAParams; - -import netscape.security.util.BigInt; -import netscape.security.util.DerOutputStream; -import netscape.security.util.DerValue; - -/** - * This class identifies DSS/DSA Algorithm variants, which are distinguished - * by using different algorithm parameters <em>P, Q, G</em>. It uses the - * NIST/IETF standard DER encoding. These are used to implement the Digital - * Signature Standard (DSS), FIPS 186. - * - * <P> - * <em><b>NOTE:</b> At this time, DSS/DSA Algorithm IDs must always - * include these parameters. Use of DSS/DSA in modes where parameters are - * either implicit (e.g. a default applicable to a site or a larger scope), - * or are derived from some Certificate Authority's DSS certificate, is - * not currently supported. </em> - * - * @version 1.31 - * @author David Brownell - */ -public final class AlgIdDSA extends AlgorithmId implements DSAParams { - /** - * - */ - private static final long serialVersionUID = 5978220691806461631L; - /* - * The three unsigned integer parameters. - */ - private BigInteger p, q, g; - - /** Returns the DSS/DSA parameter "P" */ - public BigInteger getP() { - return p; - } - - /** Returns the DSS/DSA parameter "Q" */ - public BigInteger getQ() { - return q; - } - - /** Returns the DSS/DSA parameter "G" */ - public BigInteger getG() { - return g; - } - - /** - * Default constructor. The OID and parameters must be - * deserialized before this algorithm ID is used. - */ - // XXX deprecated for general use - public AlgIdDSA() { - } - - AlgIdDSA(DerValue val) throws IOException { - super(val.getOID()); - } - - /** - * Construct an AlgIdDSA from an X.509 encoded byte array. - */ - public AlgIdDSA(byte[] encodedAlg) throws IOException { - super(new DerValue(encodedAlg).getOID()); - } - - /** - * Constructs a DSS/DSA Algorithm ID from unsigned integers that - * define the algorithm parameters. Those integers are encoded - * as big-endian byte arrays. - * - * @param p the DSS/DSA paramter "P" - * @param q the DSS/DSA paramter "Q" - * @param g the DSS/DSA paramter "G" - */ - public AlgIdDSA(byte p[], byte q[], byte g[]) - throws IOException { - this(new BigInteger(1, p), - new BigInteger(1, q), - new BigInteger(1, g)); - } - - /** - * Constructs a DSS/DSA Algorithm ID from numeric parameters. - * - * @param p the DSS/DSA paramter "P" - * @param q the DSS/DSA paramter "Q" - * @param g the DSS/DSA paramter "G" - */ - public AlgIdDSA(BigInteger p, BigInteger q, BigInteger g) { - super(DSA_oid); - - try { - this.p = p; - this.q = q; - this.g = g; - initializeParams(); - - } catch (IOException e) { - /* this should not happen */ - throw new ProviderException("Construct DSS/DSA Algorithm ID"); - } - } - - /** - * Returns "DSA", indicating the Digital Signature Algorithm (DSA) as - * defined by the Digital Signature Standard (DSS), FIPS 186. - */ - public String getName() { - return "DSA"; - } - - /* - * For algorithm IDs which haven't been created from a DER encoded - * value, "params" must be created. - */ - private void initializeParams() - throws IOException { - DerOutputStream out = new DerOutputStream(); - - out.putInteger(new BigInt(p.toByteArray())); - out.putInteger(new BigInt(q.toByteArray())); - out.putInteger(new BigInt(g.toByteArray())); - params = new DerValue(DerValue.tag_Sequence, out.toByteArray()); - } - - /** - * Parses algorithm parameters P, Q, and G. They're found - * in the "params" member, which never needs to be changed. - */ - protected void decodeParams() - throws IOException { - if (params == null || params.tag != DerValue.tag_Sequence) - throw new IOException("DSA alg parsing error"); - - params.data.reset(); - - this.p = params.data.getInteger().toBigInteger(); - this.q = params.data.getInteger().toBigInteger(); - this.g = params.data.getInteger().toBigInteger(); - - if (params.data.available() != 0) - throw new IOException("AlgIdDSA params, extra=" + - params.data.available()); - } - - /* - * Returns a formatted string describing the parameters. - */ - public String toString() { - return paramsToString(); - } - - /* - * Returns a string describing the parameters. - */ - protected String paramsToString() { - return "\n p:\n" + (new BigInt(p)).toString() + - "\n q:\n" + (new BigInt(q)).toString() + - "\n g:\n" + (new BigInt(g)).toString() + - "\n"; - } -} |