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diff --git a/contrib/pgcrypto/rijndael.h b/contrib/pgcrypto/rijndael.h
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+/*
+ * contrib/pgcrypto/rijndael.h
+ *
+ * $OpenBSD: rijndael.h,v 1.3 2001/05/09 23:01:32 markus Exp $ */
+
+/* This is an independent implementation of the encryption algorithm: */
+/* */
+/* RIJNDAEL by Joan Daemen and Vincent Rijmen */
+/* */
+/* which is a candidate algorithm in the Advanced Encryption Standard */
+/* programme of the US National Institute of Standards and Technology. */
+/* */
+/* Copyright in this implementation is held by Dr B R Gladman but I */
+/* hereby give permission for its free direct or derivative use subject */
+/* to acknowledgment of its origin and compliance with any conditions */
+/* that the originators of the algorithm place on its exploitation. */
+/* */
+/* Dr Brian Gladman (gladman@seven77.demon.co.uk) 14th January 1999 */
+
+#ifndef _RIJNDAEL_H_
+#define _RIJNDAEL_H_
+
+/* 1. Standard types for AES cryptography source code */
+
+typedef uint8 u1byte; /* an 8 bit unsigned character type */
+typedef uint16 u2byte; /* a 16 bit unsigned integer type */
+typedef uint32 u4byte; /* a 32 bit unsigned integer type */
+
+typedef int8 s1byte; /* an 8 bit signed character type */
+typedef int16 s2byte; /* a 16 bit signed integer type */
+typedef int32 s4byte; /* a 32 bit signed integer type */
+
+typedef struct _rijndael_ctx
+{
+ u4byte k_len;
+ int decrypt;
+ u4byte e_key[64];
+ u4byte d_key[64];
+} rijndael_ctx;
+
+
+/* 2. Standard interface for AES cryptographic routines */
+
+/* These are all based on 32 bit unsigned values and will therefore */
+/* require endian conversions for big-endian architectures */
+
+rijndael_ctx *rijndael_set_key(rijndael_ctx *, const u4byte *, const u4byte, int);
+void rijndael_encrypt(rijndael_ctx *, const u4byte *, u4byte *);
+void rijndael_decrypt(rijndael_ctx *, const u4byte *, u4byte *);
+
+/* conventional interface */
+
+void aes_set_key(rijndael_ctx *ctx, const uint8 *key, unsigned keybits, int enc);
+void aes_ecb_encrypt(rijndael_ctx *ctx, uint8 *data, unsigned len);
+void aes_ecb_decrypt(rijndael_ctx *ctx, uint8 *data, unsigned len);
+void aes_cbc_encrypt(rijndael_ctx *ctx, uint8 *iva, uint8 *data, unsigned len);
+void aes_cbc_decrypt(rijndael_ctx *ctx, uint8 *iva, uint8 *data, unsigned len);
+
+#endif /* _RIJNDAEL_H_ */