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diff --git a/libparc/parc/security/parc_ContainerEncoding.h b/libparc/parc/security/parc_ContainerEncoding.h
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+++ b/libparc/parc/security/parc_ContainerEncoding.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.
+ */
+
+/**
+ * @file parc_ContainerEncoding.h
+ * @ingroup security
+ * @brief A Encoding specifying a certificate.
+ *
+ */
+#ifndef libparc_parc_Encoding_h
+#define libparc_parc_Encoding_h
+
+typedef enum {
+    PARCContainerEncoding_PEM,
+    PARCContainerEncoding_DER,
+    PARCContainerEncoding_PKCS12,
+    PARCContainerEncoding_Invalid
+} PARCContainerEncoding;
+
+/**
+ * Convert the `PARCContainerEncoding` value to a human-readable string representation.
+ *
+ * @param [in] Encoding A `PARCContainerEncoding` value
+ *
+ * @return A static, null-terminated string.
+ *
+ * Example:
+ * @code
+ * {
+ *     PARCContainerEncoding encoding = PARCContainerEncoding_X509;
+ *     const char *stringRep = parcContainerEncoding_ToString(encoding);
+ *     // use stringRep as necessary, and then free
+ * }
+ * @endcode
+ */
+const char *parcContainerEncoding_ToString(PARCContainerEncoding Encoding);
+
+/**
+ * Convert a string representation value of a `PARCContainerEncoding` to an actual value.
+ *
+ * @param [in] name A string representation of a `PARCContainerEncoding` value.
+ *
+ * @return A `PARCContainerEncoding` value.
+ *
+ * Example:
+ * @code
+ * {
+ *     const char stringRep[17] = "PARCContainerEncoding_PEM";
+ *     PARCContainerEncoding encoding = parcContainerEncoding_FromString(stringRep);
+ *     // use stringRep as necessary, and then free
+ * }
+ * @endcode
+ */
+PARCContainerEncoding parcContainerEncoding_FromString(const char *name);
+#endif // libparc_parc_Encoding_h