1 files changed, 54 insertions, 0 deletions
diff --git a/libraries/spongycastle/core/src/main/java/org/spongycastle/crypto/tls/UseSRTPData.java b/libraries/spongycastle/core/src/main/java/org/spongycastle/crypto/tls/UseSRTPData.java
new file mode 100644
index 000000000..4c1c33e9c
--- /dev/null
+++ b/libraries/spongycastle/core/src/main/java/org/spongycastle/crypto/tls/UseSRTPData.java
@@ -0,0 +1,54 @@
+package org.spongycastle.crypto.tls;
+
+/**
+ * RFC 5764 4.1.1
+ */
+public class UseSRTPData
+{
+
+    private int[] protectionProfiles;
+    private byte[] mki;
+
+    /**
+     * @param protectionProfiles see {@link SRTPProtectionProfile} for valid constants.
+     * @param mki                valid lengths from 0 to 255.
+     */
+    public UseSRTPData(int[] protectionProfiles, byte[] mki)
+    {
+
+        if (protectionProfiles == null || protectionProfiles.length < 1
+            || protectionProfiles.length >= (1 << 15))
+        {
+            throw new IllegalArgumentException(
+                "'protectionProfiles' must have length from 1 to (2^15 - 1)");
+        }
+
+        if (mki == null)
+        {
+            mki = TlsUtils.EMPTY_BYTES;
+        }
+        else if (mki.length > 255)
+        {
+            throw new IllegalArgumentException("'mki' cannot be longer than 255 bytes");
+        }
+
+        this.protectionProfiles = protectionProfiles;
+        this.mki = mki;
+    }
+
+    /**
+     * @return see {@link SRTPProtectionProfile} for valid constants.
+     */
+    public int[] getProtectionProfiles()
+    {
+        return protectionProfiles;
+    }
+
+    /**
+     * @return valid lengths from 0 to 255.
+     */
+    public byte[] getMki()
+    {
+        return mki;
+    }
+}