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diff --git a/common/asn1.h b/common/asn1.h
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+/*
+ * Copyright (C) 2012 Red Hat Inc.
+ *
+ * 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.
+ *     * The names of contributors to this software may not 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 OWNER 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.
+ *
+ * Author: Stef Walter <stefw@redhat.com>
+ */
+
+#include <libtasn1.h>
+
+#include "dict.h"
+
+#ifndef P11_ASN1_H_
+#define P11_ASN1_H_
+
+p11_dict *       p11_asn1_defs_load                 (void);
+
+node_asn *       p11_asn1_decode                    (p11_dict *asn1_defs,
+                                                     const char *struct_name,
+                                                     const unsigned char *der,
+                                                     size_t der_len,
+                                                     char *message);
+
+node_asn *       p11_asn1_create                    (p11_dict *asn1_defs,
+                                                     const char *struct_name);
+
+unsigned char *  p11_asn1_encode                    (node_asn *asn,
+                                                     size_t *der_len);
+
+time_t           p11_asn1_parse_utc                 (const char *time_str,
+                                                     struct tm *when);
+
+time_t           p11_asn1_parse_general             (const char *time_str,
+                                                     struct tm *when);
+
+ssize_t          p11_asn1_tlv_length                (const unsigned char *data,
+                                                     size_t length);
+
+#endif /* P11_ASN1_H_ */