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author | Roberto Tyley <roberto.tyley@gmail.com> | 2014-07-15 01:38:01 +0400 |
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committer | Roberto Tyley <roberto.tyley@gmail.com> | 2014-07-26 11:23:17 +0400 |
commit | 7cb752aaf746dc0b473afeb9e892b7fbc12666c5 (patch) | |
tree | cc4f91ddc18332b5adbe82e3fcb040d976c90105 /core/src/main/java/org/spongycastle/crypto/tls/ServerDHParams.java | |
parent | 551830f8ea5177042af2c7dd1fc90888bc67387d (diff) |
Execute become-spongy.sh
https://github.com/rtyley/spongycastle/blob/3040af/become-spongy.sh
Diffstat (limited to 'core/src/main/java/org/spongycastle/crypto/tls/ServerDHParams.java')
-rw-r--r-- | core/src/main/java/org/spongycastle/crypto/tls/ServerDHParams.java | 63 |
1 files changed, 63 insertions, 0 deletions
diff --git a/core/src/main/java/org/spongycastle/crypto/tls/ServerDHParams.java b/core/src/main/java/org/spongycastle/crypto/tls/ServerDHParams.java new file mode 100644 index 00000000..fa22e629 --- /dev/null +++ b/core/src/main/java/org/spongycastle/crypto/tls/ServerDHParams.java @@ -0,0 +1,63 @@ +package org.spongycastle.crypto.tls; + +import java.io.IOException; +import java.io.InputStream; +import java.io.OutputStream; +import java.math.BigInteger; + +import org.spongycastle.crypto.params.DHParameters; +import org.spongycastle.crypto.params.DHPublicKeyParameters; + +public class ServerDHParams +{ + protected DHPublicKeyParameters publicKey; + + public ServerDHParams(DHPublicKeyParameters publicKey) + { + if (publicKey == null) + { + throw new IllegalArgumentException("'publicKey' cannot be null"); + } + + this.publicKey = publicKey; + } + + public DHPublicKeyParameters getPublicKey() + { + return publicKey; + } + + /** + * Encode this {@link ServerDHParams} to an {@link OutputStream}. + * + * @param output + * the {@link OutputStream} to encode to. + * @throws IOException + */ + public void encode(OutputStream output) throws IOException + { + DHParameters dhParameters = publicKey.getParameters(); + BigInteger Ys = publicKey.getY(); + + TlsDHUtils.writeDHParameter(dhParameters.getP(), output); + TlsDHUtils.writeDHParameter(dhParameters.getG(), output); + TlsDHUtils.writeDHParameter(Ys, output); + } + + /** + * Parse a {@link ServerDHParams} from an {@link InputStream}. + * + * @param input + * the {@link InputStream} to parse from. + * @return a {@link ServerDHParams} object. + * @throws IOException + */ + public static ServerDHParams parse(InputStream input) throws IOException + { + BigInteger p = TlsDHUtils.readDHParameter(input); + BigInteger g = TlsDHUtils.readDHParameter(input); + BigInteger Ys = TlsDHUtils.readDHParameter(input); + + return new ServerDHParams(new DHPublicKeyParameters(Ys, new DHParameters(p, g))); + } +} |