Revert 175069

third_party/scrypt/lib/scryptenc/scryptenc.h

Index: third_party/scrypt/lib/scryptenc/scryptenc.h
===================================================================
--- third_party/scrypt/lib/scryptenc/scryptenc.h	(revision 175254)
+++ third_party/scrypt/lib/scryptenc/scryptenc.h	(working copy)
@@ -1,112 +0,0 @@
-/*-
- * Copyright 2009 Colin Percival
- * 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.
- *
- * This file was originally written by Colin Percival as part of the Tarsnap
- * online backup system.
- */
-#ifndef _SCRYPTENC_H_
-#define _SCRYPTENC_H_
-
-#include <stdint.h>
-#include <stdio.h>
-
-/**
- * The parameters maxmem, maxmemfrac, and maxtime used by all of these
- * functions are defined as follows:
- * maxmem - maximum number of bytes of storage to use for V array (which is
- *     by far the largest consumer of memory).  If this value is set to 0, no
- *     maximum will be enforced; any other value less than 1 MiB will be
- *     treated as 1 MiB.
- * maxmemfrac - maximum fraction of available storage to use for the V array,
- *     where "available storage" is defined as the minimum out of the
- *     RLIMIT_AS, RLIMIT_DATA. and RLIMIT_RSS resource limits (if any are
- *     set).  If this value is set to 0 or more than 0.5 it will be treated
- *     as 0.5; and this value will never cause a limit of less than 1 MiB to
- *     be enforced.
- * maxtime - maximum amount of CPU time to spend computing the derived keys,
- *     in seconds.  This limit is only approximately enforced; the CPU
- *     performance is estimated and parameter limits are chosen accordingly.
- * For the encryption functions, the parameters to the scrypt key derivation
- * function are chosen to make the key as strong as possible subject to the
- * specified limits; for the decryption functions, the parameters used are
- * compared to the computed limits and an error is returned if decrypting
- * the data would take too much memory or CPU time.
- */
-/**
- * Return codes from scrypt(enc|dec)_(buf|file):
- * 0	success
- * 1	getrlimit or sysctl(hw.usermem) failed
- * 2	clock_getres or clock_gettime failed
- * 3	error computing derived key
- * 4	could not read salt from /dev/urandom
- * 5	error in OpenSSL
- * 6	malloc failed
- * 7	data is not a valid scrypt-encrypted block
- * 8	unrecognized scrypt format
- * 9	decrypting file would take too much memory
- * 10	decrypting file would take too long
- * 11	password is incorrect
- * 12	error writing output file
- * 13	error reading input file
- */
-
-/**
- * scryptenc_buf(inbuf, inbuflen, outbuf, passwd, passwdlen,
- *     maxmem, maxmemfrac, maxtime):
- * Encrypt inbuflen bytes from inbuf, writing the resulting inbuflen + 128
- * bytes to outbuf.
- */
-int scryptenc_buf(const uint8_t *, size_t, uint8_t *,
-    const uint8_t *, size_t, size_t, double, double);
-
-/**
- * scryptdec_buf(inbuf, inbuflen, outbuf, outlen, passwd, passwdlen,
- *     maxmem, maxmemfrac, maxtime):
- * Decrypt inbuflen bytes from inbuf, writing the result into outbuf and the
- * decrypted data length to outlen.  The allocated length of outbuf must
- * be at least inbuflen.
- */
-int scryptdec_buf(const uint8_t *, size_t, uint8_t *, size_t *,
-    const uint8_t *, size_t, size_t, double, double);
-
-/**
- * scryptenc_file(infile, outfile, passwd, passwdlen,
- *     maxmem, maxmemfrac, maxtime):
- * Read a stream from infile and encrypt it, writing the resulting stream to
- * outfile.
- */
-int scryptenc_file(FILE *, FILE *, const uint8_t *, size_t,
-    size_t, double, double);
-
-/**
- * scryptdec_file(infile, outfile, passwd, passwdlen,
- *     maxmem, maxmemfrac, maxtime):
- * Read a stream from infile and decrypt it, writing the resulting stream to
- * outfile.
- */
-int scryptdec_file(FILE *, FILE *, const uint8_t *, size_t,
-    size_t, double, double);
-
-#endif /* !_SCRYPTENC_H_ */