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author | upstream source tree <ports@midipix.org> | 2015-03-15 20:14:05 -0400 |
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committer | upstream source tree <ports@midipix.org> | 2015-03-15 20:14:05 -0400 |
commit | 554fd8c5195424bdbcabf5de30fdc183aba391bd (patch) | |
tree | 976dc5ab7fddf506dadce60ae936f43f58787092 /libjava/classpath/gnu/javax/net/ssl/provider/Signature.java | |
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Diffstat (limited to 'libjava/classpath/gnu/javax/net/ssl/provider/Signature.java')
-rw-r--r-- | libjava/classpath/gnu/javax/net/ssl/provider/Signature.java | 157 |
1 files changed, 157 insertions, 0 deletions
diff --git a/libjava/classpath/gnu/javax/net/ssl/provider/Signature.java b/libjava/classpath/gnu/javax/net/ssl/provider/Signature.java new file mode 100644 index 000000000..160dd805f --- /dev/null +++ b/libjava/classpath/gnu/javax/net/ssl/provider/Signature.java @@ -0,0 +1,157 @@ +/* Signature.java -- SSL Signature structure. + Copyright (C) 2006 Free Software Foundation, Inc. + +This file is a part of GNU Classpath. + +GNU Classpath 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; either version 2 of the License, or (at +your option) any later version. + +GNU Classpath 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 GNU Classpath; if not, write to the Free Software +Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 +USA + +Linking this library statically or dynamically with other modules is +making a combined work based on this library. Thus, the terms and +conditions of the GNU General Public License cover the whole +combination. + +As a special exception, the copyright holders of this library give you +permission to link this library with independent modules to produce an +executable, regardless of the license terms of these independent +modules, and to copy and distribute the resulting executable under +terms of your choice, provided that you also meet, for each linked +independent module, the terms and conditions of the license of that +module. An independent module is a module which is not derived from +or based on this library. If you modify this library, you may extend +this exception to your version of the library, but you are not +obligated to do so. If you do not wish to do so, delete this +exception statement from your version. */ + + +package gnu.javax.net.ssl.provider; + +import java.io.PrintWriter; +import java.io.StringWriter; + +import java.nio.ByteBuffer; + +/** + * The signature structure. + * + * <pre> +select (SignatureAlgorithm) +{ +case anonymous: + struct { }; +case rsa: + digitally-signed struct + { + opaque md5_hash[16]; + opaque sha_hash[20]; + }; +case dsa: + digitally-signed struct + { + opaque sha_hash[20]; + }; +} Signature;</pre> + */ +public class Signature implements Builder, Constructed +{ + + // Fields. + // ------------------------------------------------------------------------- + + private final ByteBuffer buffer; + private final SignatureAlgorithm alg; + + // Constructor. + // ------------------------------------------------------------------------- + + public Signature (final ByteBuffer buffer, final SignatureAlgorithm alg) + { + this.buffer = buffer; + this.alg = alg; + } + + public Signature (final byte[] sigValue, final SignatureAlgorithm alg) + { + buffer = ByteBuffer.allocate(sigValue.length + 2); + buffer.putShort((short) sigValue.length); + buffer.put(sigValue); + buffer.position(0); + this.alg = alg; + } + + // Instance methods. + // ------------------------------------------------------------------------- + + public int length () + { + if (alg.equals (SignatureAlgorithm.ANONYMOUS)) + return 0; + return (buffer.getShort (0) & 0xFFFF) + 2; + } + + public ByteBuffer buffer() + { + return (ByteBuffer) buffer.duplicate().limit(length()); + } + + public byte[] signature () + { + if (alg.equals (SignatureAlgorithm.ANONYMOUS)) + return new byte[0]; + int length = buffer.getShort (0) & 0xFFFF; + byte[] buf = new byte[length]; + ((ByteBuffer) buffer.duplicate().position(2)).get(buf); + return buf; + } + + public void setSignature (final byte[] signature) + { + setSignature (signature, 0, signature.length); + } + + public void setSignature (final byte[] signature, final int offset, final int length) + { + if (alg.equals (SignatureAlgorithm.ANONYMOUS)) + return; + buffer.putShort (0, (short) length); + buffer.position (2); + buffer.put (signature, offset, length); + } + + public String toString () + { + return toString (null); + } + + public String toString (final String prefix) + { + StringWriter str = new StringWriter(); + PrintWriter out = new PrintWriter(str); + if (prefix != null) + out.print (prefix); + out.println("struct {"); + if (!alg.equals (SignatureAlgorithm.ANONYMOUS)) + { + String subprefix = " "; + if (prefix != null) + subprefix = prefix + subprefix; + out.print (Util.hexDump (signature (), subprefix)); + } + if (prefix != null) + out.print (prefix); + out.print ("} Signature;"); + return str.toString(); + } +} |