1 files changed, 47 insertions, 0 deletions
diff --git a/security/nss/lib/freebl/cmac.h b/security/nss/lib/freebl/cmac.h
new file mode 100644
index 0000000000..6a6f42c797
--- /dev/null
+++ b/security/nss/lib/freebl/cmac.h
@@ -0,0 +1,47 @@
+/* This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this
+ * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
+
+#ifndef _CMAC_H_
+#define _CMAC_H_
+
+typedef struct CMACContextStr CMACContext;
+
+SEC_BEGIN_PROTOS
+
+/* Enum for identifying the underlying block cipher we're using internally. */
+typedef enum {
+    CMAC_AES = 0
+} CMACCipher;
+
+/* Initialize an existing CMACContext struct. */
+SECStatus CMAC_Init(CMACContext *ctx, CMACCipher type,
+                    const unsigned char *key, unsigned int key_len);
+
+/* Allocate and initialize a new CMAC context with the specified cipher and
+ * key. */
+CMACContext *CMAC_Create(CMACCipher type, const unsigned char *key,
+                         unsigned int key_len);
+
+/* Called automatically by CMAC_*{Create,Init}(...). Only useful for restarting
+ * an already-started CMAC instance. */
+SECStatus CMAC_Begin(CMACContext *ctx);
+
+/* Add the specified bytes into the CMAC state. */
+SECStatus CMAC_Update(CMACContext *ctx, const unsigned char *data,
+                      unsigned int data_len);
+
+/* Finalize the CMAC state and return the result. */
+SECStatus CMAC_Finish(CMACContext *ctx, unsigned char *result,
+                      unsigned int *result_len,
+                      unsigned int max_result_len);
+
+/* Note: CMAC_Clone isn't implemented here because AES doesn't expose a
+ * context-cloning operation. */
+
+/* Destroy a CMAC context, optionally freeing it. */
+void CMAC_Destroy(CMACContext *ctx, PRBool free_it);
+
+SEC_END_PROTOS
+
+#endif