Merge "Merge remote-tracking branch 'aosp/upstream-master' into merge-152-from-upstream"

1 files changed, 13 insertions, 0 deletions

diff --git a/bcprov/src/main/java/org/bouncycastle/crypto/DigestDerivationFunction.java b/bcprov/src/main/java/org/bouncycastle/crypto/DigestDerivationFunction.java
new file mode 100644
index 0000000..180382d
--- /dev/null
+++ b/bcprov/src/main/java/org/bouncycastle/crypto/DigestDerivationFunction.java
@@ -0,0 +1,13 @@
+package org.bouncycastle.crypto;
+
+/**
+ * base interface for general purpose Digest based byte derivation functions.
+ */
+public interface DigestDerivationFunction
+    extends DerivationFunction
+{
+    /**
+     * return the message digest used as the basis for the function
+     */
+    public Digest getDigest();
+}