1 files changed, 79 insertions, 0 deletions
diff --git a/repackaged_platform/bcprov/src/main/java/com/android/internal/org/bouncycastle/jcajce/spec/OpenSSHPublicKeySpec.java b/repackaged_platform/bcprov/src/main/java/com/android/internal/org/bouncycastle/jcajce/spec/OpenSSHPublicKeySpec.java
new file mode 100644
index 00000000..93f553a8
--- /dev/null
+++ b/repackaged_platform/bcprov/src/main/java/com/android/internal/org/bouncycastle/jcajce/spec/OpenSSHPublicKeySpec.java
@@ -0,0 +1,79 @@
+/* GENERATED SOURCE. DO NOT MODIFY. */
+package com.android.internal.org.bouncycastle.jcajce.spec;
+
+import java.security.spec.EncodedKeySpec;
+
+import com.android.internal.org.bouncycastle.util.Arrays;
+import com.android.internal.org.bouncycastle.util.Strings;
+
+/**
+ * Holds an OpenSSH encoded public key.
+ * @hide This class is not part of the Android public SDK API
+ */
+public class OpenSSHPublicKeySpec
+    extends EncodedKeySpec
+{
+    private static final String[] allowedTypes = new String[]{"ssh-rsa", "ssh-ed25519", "ssh-dss"};
+    private final String type;
+
+
+    /**
+     * Construct and instance and determine the OpenSSH public key type.
+     * The current types are ssh-rsa, ssh-ed25519, ssh-dss and ecdsa-*
+     * <p>
+     * It does not validate the key beyond identifying the type.
+     *
+     * @param encodedKey
+     */
+    public OpenSSHPublicKeySpec(byte[] encodedKey)
+    {
+        super(encodedKey);
+
+        //
+        // The type is encoded at the start of the blob.
+        //
+        int pos = 0;
+        int i = (encodedKey[pos++] & 0xFF) << 24;
+        i |= (encodedKey[pos++] & 0xFF) << 16;
+        i |= (encodedKey[pos++] & 0xFF) << 8;
+        i |= (encodedKey[pos++] & 0xFF);
+
+        if ((pos + i) >= encodedKey.length)
+        {
+            throw new IllegalArgumentException("invalid public key blob: type field longer than blob");
+        }
+
+        this.type = Strings.fromByteArray(Arrays.copyOfRange(encodedKey, pos, pos + i));
+
+        if (type.startsWith("ecdsa"))
+        {
+            return; // These have a curve name and digest in them and can't be compared exactly.
+        }
+
+        for (int t = 0; t < allowedTypes.length; t++)
+        {
+            if (allowedTypes[t].equals(this.type))
+            {
+                return;
+            }
+        }
+
+        throw new IllegalArgumentException("unrecognised public key type " + type);
+
+    }
+
+    public String getFormat()
+    {
+        return "OpenSSH";
+    }
+
+    /**
+     * The type of OpenSSH public key.
+     *
+     * @return the type.
+     */
+    public String getType()
+    {
+        return type;
+    }
+}