diff options
Diffstat (limited to 'libraries/spongycastle/core/src/main/java/org/spongycastle/crypto/tls/TlsSRPUtils.java')
-rw-r--r-- | libraries/spongycastle/core/src/main/java/org/spongycastle/crypto/tls/TlsSRPUtils.java | 49 |
1 files changed, 49 insertions, 0 deletions
diff --git a/libraries/spongycastle/core/src/main/java/org/spongycastle/crypto/tls/TlsSRPUtils.java b/libraries/spongycastle/core/src/main/java/org/spongycastle/crypto/tls/TlsSRPUtils.java new file mode 100644 index 000000000..74fac926f --- /dev/null +++ b/libraries/spongycastle/core/src/main/java/org/spongycastle/crypto/tls/TlsSRPUtils.java @@ -0,0 +1,49 @@ +package org.spongycastle.crypto.tls; + +import java.io.ByteArrayInputStream; +import java.io.ByteArrayOutputStream; +import java.io.IOException; +import java.util.Hashtable; + +import org.spongycastle.util.Integers; + +public class TlsSRPUtils +{ + public static final Integer EXT_SRP = Integers.valueOf(ExtensionType.srp); + + public static void addSRPExtension(Hashtable extensions, byte[] identity) throws IOException + { + extensions.put(EXT_SRP, createSRPExtension(identity)); + } + + public static byte[] getSRPExtension(Hashtable extensions) throws IOException + { + byte[] extensionData = TlsUtils.getExtensionData(extensions, EXT_SRP); + return extensionData == null ? null : readSRPExtension(extensionData); + } + + public static byte[] createSRPExtension(byte[] identity) throws IOException + { + if (identity == null) + { + throw new TlsFatalAlert(AlertDescription.internal_error); + } + + return TlsUtils.encodeOpaque8(identity); + } + + public static byte[] readSRPExtension(byte[] extensionData) throws IOException + { + if (extensionData == null) + { + throw new IllegalArgumentException("'extensionData' cannot be null"); + } + + ByteArrayInputStream buf = new ByteArrayInputStream(extensionData); + byte[] identity = TlsUtils.readOpaque8(buf); + + TlsProtocol.assertEmpty(buf); + + return identity; + } +} |