added Common Payment Application Cryptogram Specs and Builder + tests.

note: verify CVNCPADataBuilder getDefaultARPCRequest ARC Values.

jpos/src/main/java/org/jpos/emv/cryptogram/CPACryptogram.java

@@ -0,0 +1,35 @@
+package org.jpos.emv.cryptogram;
+
+import org.jpos.security.ARPCMethod;
+import org.jpos.security.MKDMethod;
+import org.jpos.security.SKDMethod;
+
+import org.jpos.emv.cryptogram.CryptogramDataBuilder.PaddingMethod;
+
+/**
+ * Common Payment Application (CPA) Cryptogram Specification
+ */
+public class CPACryptogram implements CryptogramSpec {
+
+    final PaddingMethod paddingMethod = CryptogramDataBuilder.ISO9797Method2;
+
+    @Override
+    public MKDMethod getMKDMethod() {
+        return MKDMethod.OPTION_A;
+    }
+
+    @Override
+    public SKDMethod getSKDMethod() {
+        return SKDMethod.EMV_CSKD;
+    }
+
+    @Override
+    public ARPCMethod getARPCMethod() {
+        return ARPCMethod.METHOD_2;
+    }
+
+    @Override
+    public CryptogramDataBuilder getDataBuilder() {
+        return new CVNCPADataBuilder();
+    }
+}

jpos/src/main/java/org/jpos/emv/cryptogram/CVNCPADataBuilder.java

@@ -0,0 +1,26 @@
+package org.jpos.emv.cryptogram;
+
+import org.jpos.emv.IssuerApplicationData;
+import org.jpos.tlv.TLVList;
+import static org.jpos.emv.cryptogram.CryptogramDataBuilder.minimumSetOfDataElement;
+
+public class CVNCPADataBuilder implements CryptogramDataBuilder {
+
+    @Override
+    public String getDefaultARPCRequest(boolean approved) {
+        return approved ? "3030" : "3031";
+    }
+
+    @Override
+    public String buildARQCRequest(TLVList data, IssuerApplicationData iad) {
+        StringBuilder sb = new StringBuilder();
+        minimumSetOfDataElement(data).stream().forEach(sb::append);
+        sb.append(iad.toString());
+        return sb.toString();
+    }
+
+    @Override
+    public String buildARQCRequest_padded(TLVList data, IssuerApplicationData iad, PaddingMethod paddingMethod) {
+        return paddingMethod.apply(buildARQCRequest(data, iad));
+    }
+}

jpos/src/test/java/org/jpos/emv/cryptogram/CPACryptogramTest.java

@@ -0,0 +1,21 @@
+package org.jpos.emv.cryptogram;
+
+import org.jpos.security.ARPCMethod;
+import org.jpos.security.MKDMethod;
+import org.jpos.security.SKDMethod;
+import org.junit.jupiter.api.Test;
+
+import static org.junit.jupiter.api.Assertions.assertEquals;
+import static org.junit.jupiter.api.Assertions.assertTrue;
+
+public class CPACryptogramTest {
+    @Test
+    void test(){
+        CPACryptogram spec = new CPACryptogram();
+        assertEquals(spec.paddingMethod, CryptogramDataBuilder.ISO9797Method2);
+        assertEquals(spec.getMKDMethod(), MKDMethod.OPTION_A);
+        assertEquals(spec.getSKDMethod(), SKDMethod.EMV_CSKD);
+        assertEquals(spec.getARPCMethod(), ARPCMethod.METHOD_2);
+        assertTrue(spec.getDataBuilder() instanceof CVNCPADataBuilder);
+    }
+}

jpos/src/test/java/org/jpos/emv/cryptogram/CVNCPADataBuilderTest.java

@@ -0,0 +1,43 @@
+package org.jpos.emv.cryptogram;
+
+import org.jpos.emv.IssuerApplicationData;
+import org.jpos.tlv.TLVList;
+import org.junit.jupiter.api.Test;
+
+import static org.junit.jupiter.api.Assertions.assertEquals;
+
+public class CVNCPADataBuilderTest {
+    private final CVNCPADataBuilder builder = new CVNCPADataBuilder();
+
+    /**
+     *  Test Data is based of EMV Issuer and Application Security Guidelines v3.0  Annex A.3.3 - Example of ARQC Generation
+     */
+    @Test
+    void testBuildARQCRequest() {
+
+        TLVList data = new TLVList();
+        data.append(0x9F02, "000000010000");
+        data.append(0x9F03, "000000001000");
+        data.append(0x9F1A, "0840");
+        data.append(0x95, "0000001080");
+        data.append(0x5F2A, "0840");
+        data.append(0x9A, "980704");
+        data.append(0x9C, "00");
+        data.append(0x9F37, "11111111");
+        data.append(0x82, "5800");
+        data.append(0x9F36, "3456");
+        data.append(0x9f10, "0FA500A03800000000000000000000000F010000000000000000000000000000");
+
+        IssuerApplicationData iad = new IssuerApplicationData(data.getString(0x9f10));
+
+        assertEquals(
+                "0000000100000000000010000840000000108008409807040011111111580034560FA500A03800000000000000000000000F010000000000000000000000000000",
+                builder.buildARQCRequest(data, iad)
+        );
+
+        assertEquals(
+                "0000000100000000000010000840000000108008409807040011111111580034560FA500A03800000000000000000000000F01000000000000000000000000000080000000000000",
+                builder.buildARQCRequest_padded(data, iad, builder.ISO9797Method2)
+        );
+    }
+}