1 files changed, 78 insertions, 0 deletions
diff --git a/include/lutil_hash.h b/include/lutil_hash.h
new file mode 100644
index 0000000..2b1a744
--- /dev/null
+++ b/include/lutil_hash.h
@@ -0,0 +1,78 @@
+/* $OpenLDAP$ */
+/* This work is part of OpenLDAP Software <http://www.openldap.org/>.
+ *
+ * Copyright 1998-2022 The OpenLDAP Foundation.
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted only as authorized by the OpenLDAP
+ * Public License.
+ *
+ * A copy of this license is available in file LICENSE in the
+ * top-level directory of the distribution or, alternatively, at
+ * <http://www.OpenLDAP.org/license.html>.
+ */
+
+#ifndef _LUTIL_HASH_H_
+#define _LUTIL_HASH_H_
+
+#include <lber_types.h>
+
+LDAP_BEGIN_DECL
+
+#define LUTIL_HASH_BYTES 4
+
+#ifdef HAVE_LONG_LONG
+
+typedef union lutil_HASHContext {
+	ber_uint_t hash;
+	unsigned long long hash64;
+} lutil_HASH_CTX;
+
+#else /* !HAVE_LONG_LONG */
+
+typedef struct lutil_HASHContext {
+	ber_uint_t hash;
+} lutil_HASH_CTX;
+
+#endif /* HAVE_LONG_LONG */
+
+LDAP_LUTIL_F( void )
+lutil_HASHInit LDAP_P((
+	lutil_HASH_CTX *context));
+
+LDAP_LUTIL_F( void )
+lutil_HASHUpdate LDAP_P((
+	lutil_HASH_CTX *context,
+	unsigned char const *buf,
+	ber_len_t len));
+
+LDAP_LUTIL_F( void )
+lutil_HASHFinal LDAP_P((
+	unsigned char digest[LUTIL_HASH_BYTES],
+	lutil_HASH_CTX *context));
+
+#ifdef HAVE_LONG_LONG
+
+#define LUTIL_HASH64_BYTES	8
+
+LDAP_LUTIL_F( void )
+lutil_HASH64Init LDAP_P((
+	lutil_HASH_CTX *context));
+
+LDAP_LUTIL_F( void )
+lutil_HASH64Update LDAP_P((
+	lutil_HASH_CTX *context,
+	unsigned char const *buf,
+	ber_len_t len));
+
+LDAP_LUTIL_F( void )
+lutil_HASH64Final LDAP_P((
+	unsigned char digest[LUTIL_HASH64_BYTES],
+	lutil_HASH_CTX *context));
+
+#endif /* HAVE_LONG_LONG */
+
+LDAP_END_DECL
+
+#endif /* _LUTIL_HASH_H_ */