1 files changed, 39 insertions, 0 deletions
diff --git a/libraries/spongycastle/pkix/src/main/java/org/spongycastle/eac/operator/jcajce/EACHelper.java b/libraries/spongycastle/pkix/src/main/java/org/spongycastle/eac/operator/jcajce/EACHelper.java
new file mode 100644
index 000000000..213699810
--- /dev/null
+++ b/libraries/spongycastle/pkix/src/main/java/org/spongycastle/eac/operator/jcajce/EACHelper.java
@@ -0,0 +1,39 @@
+package org.spongycastle.eac.operator.jcajce;
+
+import java.security.NoSuchAlgorithmException;
+import java.security.NoSuchProviderException;
+import java.security.Signature;
+import java.util.Hashtable;
+
+import org.spongycastle.asn1.ASN1ObjectIdentifier;
+import org.spongycastle.asn1.eac.EACObjectIdentifiers;
+
+abstract class EACHelper
+{
+    private static final Hashtable sigNames = new Hashtable();
+
+    static
+    {
+        sigNames.put(EACObjectIdentifiers.id_TA_RSA_v1_5_SHA_1, "SHA1withRSA");
+        sigNames.put(EACObjectIdentifiers.id_TA_RSA_v1_5_SHA_256, "SHA256withRSA");
+        sigNames.put(EACObjectIdentifiers.id_TA_RSA_PSS_SHA_1, "SHA1withRSAandMGF1");
+        sigNames.put(EACObjectIdentifiers.id_TA_RSA_PSS_SHA_256, "SHA256withRSAandMGF1");
+        sigNames.put(EACObjectIdentifiers.id_TA_RSA_v1_5_SHA_512, "SHA512withRSA");
+        sigNames.put(EACObjectIdentifiers.id_TA_RSA_PSS_SHA_512, "SHA512withRSAandMGF1");
+
+        sigNames.put(EACObjectIdentifiers.id_TA_ECDSA_SHA_1, "SHA1withECDSA");
+        sigNames.put(EACObjectIdentifiers.id_TA_ECDSA_SHA_224, "SHA224withECDSA");
+        sigNames.put(EACObjectIdentifiers.id_TA_ECDSA_SHA_256, "SHA256withECDSA");
+        sigNames.put(EACObjectIdentifiers.id_TA_ECDSA_SHA_384, "SHA384withECDSA");
+        sigNames.put(EACObjectIdentifiers.id_TA_ECDSA_SHA_512, "SHA512withECDSA");
+    }
+
+    public Signature getSignature(ASN1ObjectIdentifier oid)
+        throws NoSuchProviderException, NoSuchAlgorithmException
+    {
+        return createSignature((String)sigNames.get(oid));
+    }
+
+    protected abstract Signature createSignature(String type)
+        throws NoSuchProviderException, NoSuchAlgorithmException;
+}