50 lines
2.1 KiB
Java
50 lines
2.1 KiB
Java
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package org.bouncycastle.crypto.tls;
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import java.io.ByteArrayInputStream;
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import java.io.ByteArrayOutputStream;
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import java.io.IOException;
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import java.util.Hashtable;
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import org.bouncycastle.util.Integers;
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/* loaded from: classes6.dex */
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public class TlsSRTPUtils {
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public static final Integer EXT_use_srtp = Integers.valueOf(14);
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public static UseSRTPData readUseSRTPExtension(byte[] bArr) throws IOException {
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if (bArr == null) {
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throw new IllegalArgumentException("'extensionData' cannot be null");
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}
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ByteArrayInputStream byteArrayInputStream = new ByteArrayInputStream(bArr);
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int readUint16 = TlsUtils.readUint16(byteArrayInputStream);
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if (readUint16 < 2 || (readUint16 & 1) != 0) {
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throw new TlsFatalAlert((short) 50);
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}
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int[] readUint16Array = TlsUtils.readUint16Array(readUint16 / 2, byteArrayInputStream);
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byte[] readOpaque8 = TlsUtils.readOpaque8(byteArrayInputStream);
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TlsProtocol.assertEmpty(byteArrayInputStream);
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return new UseSRTPData(readUint16Array, readOpaque8);
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}
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public static UseSRTPData getUseSRTPExtension(Hashtable hashtable) throws IOException {
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byte[] extensionData = TlsUtils.getExtensionData(hashtable, EXT_use_srtp);
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if (extensionData == null) {
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return null;
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}
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return readUseSRTPExtension(extensionData);
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}
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public static byte[] createUseSRTPExtension(UseSRTPData useSRTPData) throws IOException {
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if (useSRTPData == null) {
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throw new IllegalArgumentException("'useSRTPData' cannot be null");
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}
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ByteArrayOutputStream byteArrayOutputStream = new ByteArrayOutputStream();
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TlsUtils.writeUint16ArrayWithUint16Length(useSRTPData.getProtectionProfiles(), byteArrayOutputStream);
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TlsUtils.writeOpaque8(useSRTPData.getMki(), byteArrayOutputStream);
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return byteArrayOutputStream.toByteArray();
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}
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public static void addUseSRTPExtension(Hashtable hashtable, UseSRTPData useSRTPData) throws IOException {
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hashtable.put(EXT_use_srtp, createUseSRTPExtension(useSRTPData));
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}
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}
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