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diff --git a/libccnx-common/ccnx/common/internal/ccnx_InterestInterface.h b/libccnx-common/ccnx/common/internal/ccnx_InterestInterface.h
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+/*
+ * Copyright (c) 2017 Cisco and/or its affiliates.
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at:
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+/**
+ * @brief A structure of functions representing an Interest implementation.
+ *
+ * The underlying implementation should support the CCNxInterest API.
+ *
+ */
+
+#ifndef CCNx_Common_ccnx_internal_InterestInterface_h
+#define CCNx_Common_ccnx_internal_InterestInterface_h
+
+#include <ccnx/common/internal/ccnx_TlvDictionary.h>
+
+#include <ccnx/common/internal/ccnx_InterestPayloadIdMethod.h>
+#include <ccnx/common/ccnx_InterestPayloadId.h>
+
+typedef struct ccnx_interest_interface {
+    /** A human-readable label for this implementation */
+    char                 *description;
+
+    /** @see ccnxInterest_Create */
+    CCNxTlvDictionary *(*create)(const CCNxName * name,                  // required
+                                 const uint32_t lifetimeMilliseconds,    // may use DefaultLimetimeMilliseconds
+                                 const PARCBuffer * keyId,               // may be NULL
+                                 const PARCBuffer * contentObjectHash,   // may be NULL
+                                 const uint32_t hopLimit);
+
+    /** @see ccnxInterest_CreateSimple */
+    CCNxTlvDictionary *(*createSimple)(const CCNxName * name);
+
+    /** @see ccnxInterest_GetName */
+    CCNxName          *(*getName)(const CCNxTlvDictionary * dict);
+
+    /** @see ccnxInterest_SetLifetime */
+    bool (*setLifetime)(CCNxTlvDictionary *dict, uint32_t lifetime);
+
+    /** @see ccnxInterest_GetLifetime */
+    uint32_t (*getLifetime)(const CCNxTlvDictionary *dict);
+
+    /** @see ccnxInterest_SetHopLimit */
+    bool (*setHopLimit)(CCNxTlvDictionary *dict, uint32_t hopLimit);
+
+    /** @see ccnxInterest_GetHopLimit */
+    uint32_t (*getHopLimit)(const CCNxTlvDictionary *dict);
+
+    /** @see ccnxInterest_SetKeyIdRestriction */
+    bool (*setKeyIdRestriction)(CCNxTlvDictionary *dict, const PARCBuffer *keyId);
+
+    /** @see ccnxInterest_GetKeyIdRestriction */
+    PARCBuffer        *(*getKeyIdRestriction)(const CCNxTlvDictionary * dict);
+
+    /** @see ccnxInterest_SetPayload */
+    bool (*setPayload)(CCNxTlvDictionary *dict, const PARCBuffer *payload);
+
+    /** @see ccnxInterest_SetPayloadAndId */
+    bool (*setPayloadAndId)(CCNxTlvDictionary *dict, const PARCBuffer *payload);
+
+    /** @see ccnxInterest_SetPayloadWithId */
+    bool (*setPayloadWithId)(CCNxTlvDictionary *dict, const PARCBuffer *payload, const CCNxInterestPayloadId *id);
+
+    /** @see ccnxInterest_GetPayload */
+    PARCBuffer        *(*getPayload)(const CCNxTlvDictionary * dict);
+
+    /** @see ccnxInterest_SetContentObjectHashRestriction */
+    bool (*setContentObjectHashRestriction)(CCNxTlvDictionary *dict, const PARCBuffer *contentObjectHash);
+
+    /** @see ccnxInterest_GetContentObjectHashRestriction */
+    PARCBuffer        *(*getContentObjectHashRestriction)(const CCNxTlvDictionary * dict);
+
+    /** @see ccnxInterest_Equals */
+    bool (*equals)(const CCNxTlvDictionary *objectA, const CCNxTlvDictionary *objectB);
+    /** @see ccnxInterest_AssertValid */
+    void (*assertValid)(const CCNxTlvDictionary *dict);
+
+    /** @see ccnxInterest_ToString */
+    char              *(*toString)(const CCNxTlvDictionary * dict);
+    /** @see ccnxInterest_Display */
+    void (*display)(const CCNxTlvDictionary *interestDictionary, size_t indentation);
+} CCNxInterestInterface;
+
+
+/**
+ * The SchemaV1 Interest implementaton
+ */
+extern CCNxInterestInterface CCNxInterestFacadeV1_Implementation;
+
+/**
+ * Given a CCNxTlvDictionary representing a CCNxInterest, return the address of the CCNxInterestInterface
+ * instance that should be used to access the Interest. This will also update the CCNxTlvDictionary's interface
+ * pointer for future references.
+ *
+ * @param interestDictionary - a {@link CCNxTlvDictionary} representing a CCNxInterest.
+ * @return the address of the `CCNxContentObjectInterface` instance that should be used to access the CCNxInterest.
+ *
+ * Example:
+ * @code
+ * {
+ *     CCNxName *name = ccnxName_CreateFromCString("lci:/boose/roo/pie");
+ *
+ *     CCNxInterest *interestV1 =
+ *          ccnxInterest_CreateWithImpl(&CCNxInterestFacadeV1_Implementation,
+ *                                      name,
+ *                                      CCNxInterestDefault_LifetimeMilliseconds,
+ *                                      NULL,
+ *                                      NULL,
+ *                                      CCNxInterestDefault_HopLimit);
+ *
+ *     assertTrue(ccnxInterestInterface_GetInterface(interestV1) == &CCNxInterestFacadeV1_Implementation,
+ *                "Expected V1 Implementation");
+ *
+ *     ccnxName_Release(&name);
+ *     ccnxInterest_Release(&interestV1);
+ * } * @endcode
+ */
+CCNxInterestInterface *ccnxInterestInterface_GetInterface(const CCNxTlvDictionary *interestDictionary);
+#endif