1 files changed, 36 insertions, 0 deletions
diff --git a/libraries/spongycastle/prov/src/main/java/org/spongycastle/jcajce/provider/digest/DigestAlgorithmProvider.java b/libraries/spongycastle/prov/src/main/java/org/spongycastle/jcajce/provider/digest/DigestAlgorithmProvider.java
new file mode 100644
index 000000000..ec316d991
--- /dev/null
+++ b/libraries/spongycastle/prov/src/main/java/org/spongycastle/jcajce/provider/digest/DigestAlgorithmProvider.java
@@ -0,0 +1,36 @@
+package org.spongycastle.jcajce.provider.digest;
+
+import org.spongycastle.asn1.ASN1ObjectIdentifier;
+import org.spongycastle.jcajce.provider.config.ConfigurableProvider;
+import org.spongycastle.jcajce.provider.util.AlgorithmProvider;
+
+abstract class DigestAlgorithmProvider
+    extends AlgorithmProvider
+{
+    protected void addHMACAlgorithm(
+        ConfigurableProvider provider,
+        String algorithm,
+        String algorithmClassName,
+        String keyGeneratorClassName)
+    {
+        String mainName = "HMAC" + algorithm;
+
+        provider.addAlgorithm("Mac." + mainName, algorithmClassName);
+        provider.addAlgorithm("Alg.Alias.Mac.HMAC-" + algorithm, mainName);
+        provider.addAlgorithm("Alg.Alias.Mac.HMAC/" + algorithm, mainName);
+        provider.addAlgorithm("KeyGenerator." + mainName, keyGeneratorClassName);
+        provider.addAlgorithm("Alg.Alias.KeyGenerator.HMAC-" + algorithm, mainName);
+        provider.addAlgorithm("Alg.Alias.KeyGenerator.HMAC/" + algorithm, mainName);
+    }
+
+    protected void addHMACAlias(
+        ConfigurableProvider provider,
+        String algorithm,
+        ASN1ObjectIdentifier oid)
+    {
+        String mainName = "HMAC" + algorithm;
+
+        provider.addAlgorithm("Alg.Alias.Mac." + oid, mainName);
+        provider.addAlgorithm("Alg.Alias.KeyGenerator." + oid, mainName);
+    }
+}