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+/*
+ * px-crypt.h
+ * Header file for px_crypt().
+ *
+ * Copyright (c) 2001 Marko Kreen
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ * notice, this list of conditions and the following disclaimer.
+ * 2. 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.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE AUTHOR 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 AUTHOR 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.
+ *
+ * contrib/pgcrypto/px-crypt.h
+ */
+
+#ifndef _PX_CRYPT_H
+#define _PX_CRYPT_H
+
+/* max room for result */
+#define PX_MAX_CRYPT 128
+
+/* max salt returned by gen_salt() */
+#define PX_MAX_SALT_LEN 128
+
+/* default rounds for xdes salt */
+/* NetBSD bin/passwd/local_passwd.c has (29 * 25)*/
+#define PX_XDES_ROUNDS (29 * 25)
+
+/* default for blowfish salt */
+#define PX_BF_ROUNDS 6
+
+/*
+ * main interface
+ */
+char *px_crypt(const char *psw, const char *salt, char *buf, unsigned buflen);
+int px_gen_salt(const char *salt_type, char *dst, int rounds);
+
+/*
+ * internal functions
+ */
+
+/* crypt-gensalt.c */
+char *_crypt_gensalt_traditional_rn(unsigned long count,
+ const char *input, int size, char *output, int output_size);
+char *_crypt_gensalt_extended_rn(unsigned long count,
+ const char *input, int size, char *output, int output_size);
+char *_crypt_gensalt_md5_rn(unsigned long count,
+ const char *input, int size, char *output, int output_size);
+char *_crypt_gensalt_blowfish_rn(unsigned long count,
+ const char *input, int size, char *output, int output_size);
+
+/* disable 'extended DES crypt' */
+/* #define DISABLE_XDES */
+
+/* crypt-blowfish.c */
+char *_crypt_blowfish_rn(const char *key, const char *setting,
+ char *output, int size);
+
+/* crypt-des.c */
+char *px_crypt_des(const char *key, const char *setting);
+
+/* crypt-md5.c */
+char *px_crypt_md5(const char *pw, const char *salt,
+ char *dst, unsigned dstlen);
+
+#endif /* _PX_CRYPT_H */