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diff --git a/tools/cert_create/include/cert.h b/tools/cert_create/include/cert.h
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+/*
+ * Copyright (c) 2015, ARM Limited and Contributors. All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions are met:
+ *
+ * Redistributions of source code must retain the above copyright notice, this
+ * list of conditions and the following disclaimer.
+ *
+ * Redistributions in binary form must reproduce the above copyright notice,
+ * this list of conditions and the following disclaimer in the documentation
+ * and/or other materials provided with the distribution.
+ *
+ * Neither the name of ARM nor the names of its contributors may be used
+ * to endorse or promote products derived from this software without specific
+ * prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
+ * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE
+ * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
+ * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
+ * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
+ * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
+ * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
+ * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
+ * POSSIBILITY OF SUCH DAMAGE.
+ */
+
+#ifndef CERT_H_
+#define CERT_H_
+
+#include <openssl/ossl_typ.h>
+#include <openssl/x509.h>
+#include "key.h"
+
+/*
+ * This structure contains information related to the generation of the
+ * certificates. All these fields must be known and specified at build time
+ * except for the file name, which is picked up from the command line at
+ * run time.
+ *
+ * One instance of this structure must be created for each of the certificates
+ * present in the chain of trust.
+ *
+ * If the issuer points to this same instance, the generated certificate will
+ * be self-signed.
+ */
+typedef struct cert_s cert_t;
+struct cert_s {
+	int id;			/* Unique identifier */
+
+	const char *fn;		/* Filename to save the certificate */
+	const char *bin;	/* Image associated to this certificate */
+
+	const char *cn;		/* Subject CN (Company Name) */
+
+	X509 *x;		/* X509 certificate container */
+	key_t *key;		/* Key to be signed */
+
+	cert_t *issuer;		/* Issuer certificate */
+};
+
+int cert_add_ext(X509 *issuer, X509 *subject, int nid, char *value);
+
+int cert_new(cert_t *cert, int days, int ca, STACK_OF(X509_EXTENSION) * sk);
+
+#endif /* CERT_H_ */