main/libc0.9.32: add sha512 support to crypt()

2 files changed, 857 insertions, 1 deletions

diff --git a/main/libc0.9.32/APKBUILD b/main/libc0.9.32/APKBUILD
index 6114ddea0e..cb821c253a 100644
--- a/main/libc0.9.32/APKBUILD
+++ b/main/libc0.9.32/APKBUILD
@@ -29,6 +29,7 @@ source="http://uclibc.org/downloads/uClibc-${_ver}.tar.bz2
 	uclibcconfig.i486
 	uclibcconfig.arm
 	uclibcconfig.powerpc
+	sha512-crypt.patch
 	"
 
 _config="$srcdir"/uclibcconfig.${CARCH}
@@ -127,4 +128,5 @@ e0c901502602f7e9e002d910d0f32ab9  0001-libm-x86_64-implement-fesetround.patch
 cb1bcf2ff83029b6943d4799d926932b  uclibcconfig.x86_64
 145aaeb1833159397cfac9902e3877ab  uclibcconfig.i486
 e46de2eb20803d93ff08e205b8ed228a  uclibcconfig.arm
-2c32eadd57ac4b39a93683f6a07bf901  uclibcconfig.powerpc"
+2c32eadd57ac4b39a93683f6a07bf901  uclibcconfig.powerpc
+7bf1af84106de9e05160ed6d4853c54f  sha512-crypt.patch"
diff --git a/main/libc0.9.32/sha512-crypt.patch b/main/libc0.9.32/sha512-crypt.patch
new file mode 100644
index 0000000000..4f460cf5d9
--- /dev/null
+++ b/main/libc0.9.32/sha512-crypt.patch
@@ -0,0 +1,854 @@
+--- uClibc-0.9.32-rc2/libcrypt/Makefile.in
++++ uclibc.mod/libcrypt/Makefile.in
+@@ -19,7 +19,7 @@
+ libcrypt_OUT := $(top_builddir)libcrypt
+ 
+ libcrypt_SRC-y :=
+-libcrypt_SRC-$(UCLIBC_HAS_CRYPT_IMPL) += crypt.c des.c md5.c
++libcrypt_SRC-$(UCLIBC_HAS_CRYPT_IMPL) += crypt.c des.c md5.c sha512.c sha512-crypt.c
+ libcrypt_SRC-$(UCLIBC_HAS_CRYPT_STUB) += crypt_stub.c
+ 
+ libcrypt_SRC := $(addprefix $(libcrypt_DIR)/,$(libcrypt_SRC-y))
+--- uClibc-0.9.32-rc2/libcrypt/crypt.c
++++ uclibc.mod/libcrypt/crypt.c
+@@ -16,6 +16,8 @@
+ 	 * instead of DES...  */
+ 	if (salt[0]=='$' && salt[1]=='1' && salt[2]=='$')
+ 		return __md5_crypt((unsigned char*)key, (unsigned char*)salt);
++	else if (salt[0]=='$' && salt[1]=='6' && salt[2]=='$')
++		return __sha512_crypt((unsigned char*)key, (unsigned char*)salt);
+ 	else
+ 		return __des_crypt((unsigned char*)key, (unsigned char*)salt);
+ }
+--- uClibc-0.9.32-rc2/libcrypt/libcrypt.h
++++ uclibc.mod/libcrypt/libcrypt.h
+@@ -9,6 +9,7 @@
+ #define __LIBCRYPT_H__
+ 
+ extern char *__md5_crypt(const unsigned char *pw, const unsigned char *salt) attribute_hidden;
++extern char *__sha512_crypt(const unsigned char *pw, const unsigned char *salt) attribute_hidden;
+ extern char *__des_crypt(const unsigned char *pw, const unsigned char *salt) attribute_hidden;
+ 
+ /* shut up gcc-4.x signed warnings */
+--- /dev/null
++++ uclibc.mod/libcrypt/sha512-crypt.c
+@@ -0,0 +1,419 @@
++/* One way encryption based on SHA512 sum.
++   Copyright (C) 2007, 2009 Free Software Foundation, Inc.
++   This file is part of the GNU C Library.
++   Contributed by Ulrich Drepper <drepper@redhat.com>, 2007.
++
++   The GNU C Library is free software; you can redistribute it and/or
++   modify it under the terms of the GNU Lesser General Public
++   License as published by the Free Software Foundation; either
++   version 2.1 of the License, or (at your option) any later version.
++
++   The GNU C Library is distributed in the hope that it will be useful,
++   but WITHOUT ANY WARRANTY; without even the implied warranty of
++   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
++   Lesser General Public License for more details.
++
++   You should have received a copy of the GNU Lesser General Public
++   License along with the GNU C Library; if not, write to the Free
++   Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA
++   02111-1307 USA.  */
++
++#include <assert.h>
++#include <errno.h>
++#include <stdbool.h>
++#include <stdlib.h>
++#include <string.h>
++#include <sys/param.h>
++
++#include "sha512.h"
++
++
++#ifdef USE_NSS
++typedef int PRBool;
++# include <hasht.h>
++# include <nsslowhash.h>
++
++# define sha512_init_ctx(ctxp, nss_ctxp) \
++  do									      \
++    {									      \
++      if (((nss_ctxp = NSSLOWHASH_NewContext (nss_ictx, HASH_AlgSHA512))      \
++	   == NULL))							      \
++	{								      \
++	  if (nss_ctx != NULL)						      \
++	    NSSLOWHASH_Destroy (nss_ctx);				      \
++	  if (nss_alt_ctx != NULL)					      \
++	    NSSLOWHASH_Destroy (nss_alt_ctx);				      \
++	  return NULL;							      \
++	}								      \
++      NSSLOWHASH_Begin (nss_ctxp);					      \
++    }									      \
++  while (0)
++
++# define sha512_process_bytes(buf, len, ctxp, nss_ctxp) \
++  NSSLOWHASH_Update (nss_ctxp, (const unsigned char *) buf, len)
++
++# define sha512_finish_ctx(ctxp, nss_ctxp, result) \
++  do									      \
++    {									      \
++      unsigned int ret;							      \
++      NSSLOWHASH_End (nss_ctxp, result, &ret, sizeof (result));		      \
++      assert (ret == sizeof (result));					      \
++      NSSLOWHASH_Destroy (nss_ctxp);					      \
++      nss_ctxp = NULL;							      \
++    }									      \
++  while (0)
++#else
++# define sha512_init_ctx(ctxp, nss_ctxp) \
++  __sha512_init_ctx (ctxp)
++
++# define sha512_process_bytes(buf, len, ctxp, nss_ctxp) \
++  __sha512_process_bytes(buf, len, ctxp)
++
++# define sha512_finish_ctx(ctxp, nss_ctxp, result) \
++  __sha512_finish_ctx (ctxp, result)
++#endif
++
++
++/* Define our magic string to mark salt for SHA512 "encryption"
++   replacement.  */
++static const char sha512_salt_prefix[] = "$6$";
++
++/* Prefix for optional rounds specification.  */
++static const char sha512_rounds_prefix[] = "rounds=";
++
++/* Maximum salt string length.  */
++#define SALT_LEN_MAX 16
++/* Default number of rounds if not explicitly specified.  */
++#define ROUNDS_DEFAULT 5000
++/* Minimum number of rounds.  */
++#define ROUNDS_MIN 1000
++/* Maximum number of rounds.  */
++#define ROUNDS_MAX 999999999
++
++/* Table with characters for base64 transformation.  */
++static const char b64t[64] =
++"./0123456789ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz";
++
++
++/* Prototypes for local functions.  */
++extern char *__sha512_crypt_r (const char *key, const char *salt,
++			       char *buffer, int buflen);
++extern char *__sha512_crypt (const char *key, const char *salt);
++
++
++char *
++__sha512_crypt_r (key, salt, buffer, buflen)
++     const char *key;
++     const char *salt;
++     char *buffer;
++     int buflen;
++{
++  unsigned char alt_result[64]
++    __attribute__ ((__aligned__ (__alignof__ (uint64_t))));
++  unsigned char temp_result[64]
++    __attribute__ ((__aligned__ (__alignof__ (uint64_t))));
++  size_t salt_len;
++  size_t key_len;
++  size_t cnt;
++  char *cp;
++  char *copied_key = NULL;
++  char *copied_salt = NULL;
++  char *p_bytes;
++  char *s_bytes;
++  /* Default number of rounds.  */
++  size_t rounds = ROUNDS_DEFAULT;
++  bool rounds_custom = false;
++
++  /* Find beginning of salt string.  The prefix should normally always
++     be present.  Just in case it is not.  */
++  if (strncmp (sha512_salt_prefix, salt, sizeof (sha512_salt_prefix) - 1) == 0)
++    /* Skip salt prefix.  */
++    salt += sizeof (sha512_salt_prefix) - 1;
++
++  if (strncmp (salt, sha512_rounds_prefix, sizeof (sha512_rounds_prefix) - 1)
++      == 0)
++    {
++      const char *num = salt + sizeof (sha512_rounds_prefix) - 1;
++      char *endp;
++      unsigned long int srounds = strtoul (num, &endp, 10);
++      if (*endp == '$')
++	{
++	  salt = endp + 1;
++	  rounds = MAX (ROUNDS_MIN, MIN (srounds, ROUNDS_MAX));
++	  rounds_custom = true;
++	}
++    }
++
++  salt_len = MIN (strcspn (salt, "$"), SALT_LEN_MAX);
++  key_len = strlen (key);
++
++  if ((key - (char *) 0) % __alignof__ (uint64_t) != 0)
++    {
++      char *tmp = (char *) alloca (key_len + __alignof__ (uint64_t));
++      key = copied_key =
++	memcpy (tmp + __alignof__ (uint64_t)
++		- (tmp - (char *) 0) % __alignof__ (uint64_t),
++		key, key_len);
++      assert ((key - (char *) 0) % __alignof__ (uint64_t) == 0);
++    }
++
++  if ((salt - (char *) 0) % __alignof__ (uint64_t) != 0)
++    {
++      char *tmp = (char *) alloca (salt_len + __alignof__ (uint64_t));
++      salt = copied_salt =
++	memcpy (tmp + __alignof__ (uint64_t)
++		- (tmp - (char *) 0) % __alignof__ (uint64_t),
++		salt, salt_len);
++      assert ((salt - (char *) 0) % __alignof__ (uint64_t) == 0);
++    }
++
++#ifdef USE_NSS
++  /* Initialize libfreebl3.  */
++  NSSLOWInitContext *nss_ictx = NSSLOW_Init ();
++  if (nss_ictx == NULL)
++    return NULL;
++  NSSLOWHASHContext *nss_ctx = NULL;
++  NSSLOWHASHContext *nss_alt_ctx = NULL;
++#else
++  struct sha512_ctx ctx;
++  struct sha512_ctx alt_ctx;
++#endif
++
++  /* Prepare for the real work.  */
++  sha512_init_ctx (&ctx, nss_ctx);
++
++  /* Add the key string.  */
++  sha512_process_bytes (key, key_len, &ctx, nss_ctx);
++
++  /* The last part is the salt string.  This must be at most 16
++     characters and it ends at the first `$' character.  */
++  sha512_process_bytes (salt, salt_len, &ctx, nss_ctx);
++
++
++  /* Compute alternate SHA512 sum with input KEY, SALT, and KEY.  The
++     final result will be added to the first context.  */
++  sha512_init_ctx (&alt_ctx, nss_alt_ctx);
++
++  /* Add key.  */
++  sha512_process_bytes (key, key_len, &alt_ctx, nss_alt_ctx);
++
++  /* Add salt.  */
++  sha512_process_bytes (salt, salt_len, &alt_ctx, nss_alt_ctx);
++
++  /* Add key again.  */
++  sha512_process_bytes (key, key_len, &alt_ctx, nss_alt_ctx);
++
++  /* Now get result of this (64 bytes) and add it to the other
++     context.  */
++  sha512_finish_ctx (&alt_ctx, nss_alt_ctx, alt_result);
++
++  /* Add for any character in the key one byte of the alternate sum.  */
++  for (cnt = key_len; cnt > 64; cnt -= 64)
++    sha512_process_bytes (alt_result, 64, &ctx, nss_ctx);
++  sha512_process_bytes (alt_result, cnt, &ctx, nss_ctx);
++
++  /* Take the binary representation of the length of the key and for every
++     1 add the alternate sum, for every 0 the key.  */
++  for (cnt = key_len; cnt > 0; cnt >>= 1)
++    if ((cnt & 1) != 0)
++      sha512_process_bytes (alt_result, 64, &ctx, nss_ctx);
++    else
++      sha512_process_bytes (key, key_len, &ctx, nss_ctx);
++
++  /* Create intermediate result.  */
++  sha512_finish_ctx (&ctx, nss_ctx, alt_result);
++
++  /* Start computation of P byte sequence.  */
++  sha512_init_ctx (&alt_ctx, nss_alt_ctx);
++
++  /* For every character in the password add the entire password.  */
++  for (cnt = 0; cnt < key_len; ++cnt)
++    sha512_process_bytes (key, key_len, &alt_ctx, nss_alt_ctx);
++
++  /* Finish the digest.  */
++  sha512_finish_ctx (&alt_ctx, nss_alt_ctx, temp_result);
++
++  /* Create byte sequence P.  */
++  cp = p_bytes = alloca (key_len);
++  for (cnt = key_len; cnt >= 64; cnt -= 64)
++    cp = mempcpy (cp, temp_result, 64);
++  memcpy (cp, temp_result, cnt);
++
++  /* Start computation of S byte sequence.  */
++  sha512_init_ctx (&alt_ctx, nss_alt_ctx);
++
++  /* For every character in the password add the entire password.  */
++  for (cnt = 0; cnt < 16 + alt_result[0]; ++cnt)
++    sha512_process_bytes (salt, salt_len, &alt_ctx, nss_alt_ctx);
++
++  /* Finish the digest.  */
++  sha512_finish_ctx (&alt_ctx, nss_alt_ctx, temp_result);
++
++  /* Create byte sequence S.  */
++  cp = s_bytes = alloca (salt_len);
++  for (cnt = salt_len; cnt >= 64; cnt -= 64)
++    cp = mempcpy (cp, temp_result, 64);
++  memcpy (cp, temp_result, cnt);
++
++  /* Repeatedly run the collected hash value through SHA512 to burn
++     CPU cycles.  */
++  for (cnt = 0; cnt < rounds; ++cnt)
++    {
++      /* New context.  */
++      sha512_init_ctx (&ctx, nss_ctx);
++
++      /* Add key or last result.  */
++      if ((cnt & 1) != 0)
++	sha512_process_bytes (p_bytes, key_len, &ctx, nss_ctx);
++      else
++	sha512_process_bytes (alt_result, 64, &ctx, nss_ctx);
++
++      /* Add salt for numbers not divisible by 3.  */
++      if (cnt % 3 != 0)
++	sha512_process_bytes (s_bytes, salt_len, &ctx, nss_ctx);
++
++      /* Add key for numbers not divisible by 7.  */
++      if (cnt % 7 != 0)
++	sha512_process_bytes (p_bytes, key_len, &ctx, nss_ctx);
++
++      /* Add key or last result.  */
++      if ((cnt & 1) != 0)
++	sha512_process_bytes (alt_result, 64, &ctx, nss_ctx);
++      else
++	sha512_process_bytes (p_bytes, key_len, &ctx, nss_ctx);
++
++      /* Create intermediate result.  */
++      sha512_finish_ctx (&ctx, nss_ctx, alt_result);
++    }
++
++#ifdef USE_NSS
++  /* Free libfreebl3 resources. */
++  NSSLOW_Shutdown (nss_ictx);
++#endif
++
++  /* Now we can construct the result string.  It consists of three
++     parts.  */
++  cp = stpncpy (buffer, sha512_salt_prefix, MAX (0, buflen));
++  buflen -= sizeof (sha512_salt_prefix) - 1;
++
++  if (rounds_custom)
++    {
++      int n = snprintf (cp, MAX (0, buflen), "%s%zu$",
++			sha512_rounds_prefix, rounds);
++      cp += n;
++      buflen -= n;
++    }
++
++  cp = stpncpy (cp, salt, MIN ((size_t) MAX (0, buflen), salt_len));
++  buflen -= MIN ((size_t) MAX (0, buflen), salt_len);
++
++  if (buflen > 0)
++    {
++      *cp++ = '$';
++      --buflen;
++    }
++
++  void b64_from_24bit (unsigned int b2, unsigned int b1, unsigned int b0,
++		       int n)
++  {
++    unsigned int w = (b2 << 16) | (b1 << 8) | b0;
++    while (n-- > 0 && buflen > 0)
++      {
++	*cp++ = b64t[w & 0x3f];
++	--buflen;
++	w >>= 6;
++      }
++  }
++
++  b64_from_24bit (alt_result[0], alt_result[21], alt_result[42], 4);
++  b64_from_24bit (alt_result[22], alt_result[43], alt_result[1], 4);
++  b64_from_24bit (alt_result[44], alt_result[2], alt_result[23], 4);
++  b64_from_24bit (alt_result[3], alt_result[24], alt_result[45], 4);
++  b64_from_24bit (alt_result[25], alt_result[46], alt_result[4], 4);
++  b64_from_24bit (alt_result[47], alt_result[5], alt_result[26], 4);
++  b64_from_24bit (alt_result[6], alt_result[27], alt_result[48], 4);
++  b64_from_24bit (alt_result[28], alt_result[49], alt_result[7], 4);
++  b64_from_24bit (alt_result[50], alt_result[8], alt_result[29], 4);
++  b64_from_24bit (alt_result[9], alt_result[30], alt_result[51], 4);
++  b64_from_24bit (alt_result[31], alt_result[52], alt_result[10], 4);
++  b64_from_24bit (alt_result[53], alt_result[11], alt_result[32], 4);
++  b64_from_24bit (alt_result[12], alt_result[33], alt_result[54], 4);
++  b64_from_24bit (alt_result[34], alt_result[55], alt_result[13], 4);
++  b64_from_24bit (alt_result[56], alt_result[14], alt_result[35], 4);
++  b64_from_24bit (alt_result[15], alt_result[36], alt_result[57], 4);
++  b64_from_24bit (alt_result[37], alt_result[58], alt_result[16], 4);
++  b64_from_24bit (alt_result[59], alt_result[17], alt_result[38], 4);
++  b64_from_24bit (alt_result[18], alt_result[39], alt_result[60], 4);
++  b64_from_24bit (alt_result[40], alt_result[61], alt_result[19], 4);
++  b64_from_24bit (alt_result[62], alt_result[20], alt_result[41], 4);
++  b64_from_24bit (0, 0, alt_result[63], 2);
++
++  if (buflen <= 0)
++    {
++      __set_errno (ERANGE);
++      buffer = NULL;
++    }
++  else
++    *cp = '\0';		/* Terminate the string.  */
++
++  /* Clear the buffer for the intermediate result so that people
++     attaching to processes or reading core dumps cannot get any
++     information.  We do it in this way to clear correct_words[]
++     inside the SHA512 implementation as well.  */
++#ifndef USE_NSS
++  __sha512_init_ctx (&ctx);
++  __sha512_finish_ctx (&ctx, alt_result);
++  memset (&ctx, '\0', sizeof (ctx));
++  memset (&alt_ctx, '\0', sizeof (alt_ctx));
++#endif
++  memset (temp_result, '\0', sizeof (temp_result));
++  memset (p_bytes, '\0', key_len);
++  memset (s_bytes, '\0', salt_len);
++  if (copied_key != NULL)
++    memset (copied_key, '\0', key_len);
++  if (copied_salt != NULL)
++    memset (copied_salt, '\0', salt_len);
++
++  return buffer;
++}
++
++#ifndef _LIBC
++# define libc_freeres_ptr(decl) decl
++#endif
++libc_freeres_ptr (static char *buffer);
++
++/* This entry point is equivalent to the `crypt' function in Unix
++   libcs.  */
++char *
++__sha512_crypt (const char *key, const char *salt)
++{
++  /* We don't want to have an arbitrary limit in the size of the
++     password.  We can compute an upper bound for the size of the
++     result in advance and so we can prepare the buffer we pass to
++     `sha512_crypt_r'.  */
++  static int buflen;
++  int needed = (sizeof (sha512_salt_prefix) - 1
++		+ sizeof (sha512_rounds_prefix) + 9 + 1
++		+ strlen (salt) + 1 + 86 + 1);
++
++  if (buflen < needed)
++    {
++      char *new_buffer = (char *) realloc (buffer, needed);
++      if (new_buffer == NULL)
++	return NULL;
++
++      buffer = new_buffer;
++      buflen = needed;
++    }
++
++  return __sha512_crypt_r (key, salt, buffer, buflen);
++}
++
++#ifndef _LIBC
++static void
++__attribute__ ((__destructor__))
++free_mem (void)
++{
++  free (buffer);
++}
++#endif
+--- /dev/null
++++ uclibc.mod/libcrypt/sha512.c
+@@ -0,0 +1,336 @@
++/* Functions to compute SHA512 message digest of files or memory blocks.
++   according to the definition of SHA512 in FIPS 180-2.
++   Copyright (C) 2007 Free Software Foundation, Inc.
++   This file is part of the GNU C Library.
++
++   The GNU C Library is free software; you can redistribute it and/or
++   modify it under the terms of the GNU Lesser General Public
++   License as published by the Free Software Foundation; either
++   version 2.1 of the License, or (at your option) any later version.
++
++   The GNU C Library is distributed in the hope that it will be useful,
++   but WITHOUT ANY WARRANTY; without even the implied warranty of
++   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
++   Lesser General Public License for more details.
++
++   You should have received a copy of the GNU Lesser General Public
++   License along with the GNU C Library; if not, write to the Free
++   Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA
++   02111-1307 USA.  */
++
++/* Written by Ulrich Drepper <drepper@redhat.com>, 2007.  */
++
++#ifdef HAVE_CONFIG_H
++# include <config.h>
++#endif
++
++#include <endian.h>
++#include <stdlib.h>
++#include <string.h>
++#include <sys/types.h>
++
++#include "sha512.h"
++
++#if __BYTE_ORDER == __LITTLE_ENDIAN
++# ifdef _LIBC
++#  include <byteswap.h>
++#  define SWAP(n) bswap_64 (n)
++# else
++#  define SWAP(n) \
++  (((n) << 56)					\
++   | (((n) & 0xff00) << 40)			\
++   | (((n) & 0xff0000) << 24)			\
++   | (((n) & 0xff000000) << 8)			\
++   | (((n) >> 8) & 0xff000000)			\
++   | (((n) >> 24) & 0xff0000)			\
++   | (((n) >> 40) & 0xff00)			\
++   | ((n) >> 56))
++# endif
++#else
++# define SWAP(n) (n)
++#endif
++
++
++/* This array contains the bytes used to pad the buffer to the next
++   64-byte boundary.  (FIPS 180-2:5.1.2)  */
++static const unsigned char fillbuf[128] = { 0x80, 0 /* , 0, 0, ...  */ };
++
++
++/* Constants for SHA512 from FIPS 180-2:4.2.3.  */
++static const uint64_t K[80] =
++  {
++    UINT64_C (0x428a2f98d728ae22), UINT64_C (0x7137449123ef65cd),
++    UINT64_C (0xb5c0fbcfec4d3b2f), UINT64_C (0xe9b5dba58189dbbc),
++    UINT64_C (0x3956c25bf348b538), UINT64_C (0x59f111f1b605d019),
++    UINT64_C (0x923f82a4af194f9b), UINT64_C (0xab1c5ed5da6d8118),
++    UINT64_C (0xd807aa98a3030242), UINT64_C (0x12835b0145706fbe),
++    UINT64_C (0x243185be4ee4b28c), UINT64_C (0x550c7dc3d5ffb4e2),
++    UINT64_C (0x72be5d74f27b896f), UINT64_C (0x80deb1fe3b1696b1),
++    UINT64_C (0x9bdc06a725c71235), UINT64_C (0xc19bf174cf692694),
++    UINT64_C (0xe49b69c19ef14ad2), UINT64_C (0xefbe4786384f25e3),
++    UINT64_C (0x0fc19dc68b8cd5b5), UINT64_C (0x240ca1cc77ac9c65),
++    UINT64_C (0x2de92c6f592b0275), UINT64_C (0x4a7484aa6ea6e483),
++    UINT64_C (0x5cb0a9dcbd41fbd4), UINT64_C (0x76f988da831153b5),
++    UINT64_C (0x983e5152ee66dfab), UINT64_C (0xa831c66d2db43210),
++    UINT64_C (0xb00327c898fb213f), UINT64_C (0xbf597fc7beef0ee4),
++    UINT64_C (0xc6e00bf33da88fc2), UINT64_C (0xd5a79147930aa725),
++    UINT64_C (0x06ca6351e003826f), UINT64_C (0x142929670a0e6e70),
++    UINT64_C (0x27b70a8546d22ffc), UINT64_C (0x2e1b21385c26c926),
++    UINT64_C (0x4d2c6dfc5ac42aed), UINT64_C (0x53380d139d95b3df),
++    UINT64_C (0x650a73548baf63de), UINT64_C (0x766a0abb3c77b2a8),
++    UINT64_C (0x81c2c92e47edaee6), UINT64_C (0x92722c851482353b),
++    UINT64_C (0xa2bfe8a14cf10364), UINT64_C (0xa81a664bbc423001),
++    UINT64_C (0xc24b8b70d0f89791), UINT64_C (0xc76c51a30654be30),
++    UINT64_C (0xd192e819d6ef5218), UINT64_C (0xd69906245565a910),
++    UINT64_C (0xf40e35855771202a), UINT64_C (0x106aa07032bbd1b8),
++    UINT64_C (0x19a4c116b8d2d0c8), UINT64_C (0x1e376c085141ab53),
++    UINT64_C (0x2748774cdf8eeb99), UINT64_C (0x34b0bcb5e19b48a8),
++    UINT64_C (0x391c0cb3c5c95a63), UINT64_C (0x4ed8aa4ae3418acb),
++    UINT64_C (0x5b9cca4f7763e373), UINT64_C (0x682e6ff3d6b2b8a3),
++    UINT64_C (0x748f82ee5defb2fc), UINT64_C (0x78a5636f43172f60),
++    UINT64_C (0x84c87814a1f0ab72), UINT64_C (0x8cc702081a6439ec),
++    UINT64_C (0x90befffa23631e28), UINT64_C (0xa4506cebde82bde9),
++    UINT64_C (0xbef9a3f7b2c67915), UINT64_C (0xc67178f2e372532b),
++    UINT64_C (0xca273eceea26619c), UINT64_C (0xd186b8c721c0c207),
++    UINT64_C (0xeada7dd6cde0eb1e), UINT64_C (0xf57d4f7fee6ed178),
++    UINT64_C (0x06f067aa72176fba), UINT64_C (0x0a637dc5a2c898a6),
++    UINT64_C (0x113f9804bef90dae), UINT64_C (0x1b710b35131c471b),
++    UINT64_C (0x28db77f523047d84), UINT64_C (0x32caab7b40c72493),
++    UINT64_C (0x3c9ebe0a15c9bebc), UINT64_C (0x431d67c49c100d4c),
++    UINT64_C (0x4cc5d4becb3e42b6), UINT64_C (0x597f299cfc657e2a),
++    UINT64_C (0x5fcb6fab3ad6faec), UINT64_C (0x6c44198c4a475817)
++  };
++
++
++/* Process LEN bytes of BUFFER, accumulating context into CTX.
++   It is assumed that LEN % 128 == 0.  */
++static void
++sha512_process_block (const void *buffer, size_t len, struct sha512_ctx *ctx)
++{
++  const uint64_t *words = buffer;
++  size_t nwords = len / sizeof (uint64_t);
++  uint64_t a = ctx->H[0];
++  uint64_t b = ctx->H[1];
++  uint64_t c = ctx->H[2];
++  uint64_t d = ctx->H[3];
++  uint64_t e = ctx->H[4];
++  uint64_t f = ctx->H[5];
++  uint64_t g = ctx->H[6];
++  uint64_t h = ctx->H[7];
++
++  /* First increment the byte count.  FIPS 180-2 specifies the possible
++     length of the file up to 2^128 bits.  Here we only compute the
++     number of bytes.  Do a double word increment.  */
++  ctx->total[0] += len;
++  if (ctx->total[0] < len)
++    ++ctx->total[1];
++
++  /* Process all bytes in the buffer with 128 bytes in each round of
++     the loop.  */
++  while (nwords > 0)
++    {
++      uint64_t W[80];
++      uint64_t a_save = a;
++      uint64_t b_save = b;
++      uint64_t c_save = c;
++      uint64_t d_save = d;
++      uint64_t e_save = e;
++      uint64_t f_save = f;
++      uint64_t g_save = g;
++      uint64_t h_save = h;
++
++      /* Operators defined in FIPS 180-2:4.1.2.  */
++#define Ch(x, y, z) ((x & y) ^ (~x & z))
++#define Maj(x, y, z) ((x & y) ^ (x & z) ^ (y & z))
++#define S0(x) (CYCLIC (x, 28) ^ CYCLIC (x, 34) ^ CYCLIC (x, 39))
++#define S1(x) (CYCLIC (x, 14) ^ CYCLIC (x, 18) ^ CYCLIC (x, 41))
++#define R0(x) (CYCLIC (x, 1) ^ CYCLIC (x, 8) ^ (x >> 7))
++#define R1(x) (CYCLIC (x, 19) ^ CYCLIC (x, 61) ^ (x >> 6))
++
++      /* It is unfortunate that C does not provide an operator for
++	 cyclic rotation.  Hope the C compiler is smart enough.  */
++#define CYCLIC(w, s) ((w >> s) | (w << (64 - s)))
++
++      /* Compute the message schedule according to FIPS 180-2:6.3.2 step 2.  */
++      for (unsigned int t = 0; t < 16; ++t)
++	{
++	  W[t] = SWAP (*words);
++	  ++words;
++	}
++      for (unsigned int t = 16; t < 80; ++t)
++	W[t] = R1 (W[t - 2]) + W[t - 7] + R0 (W[t - 15]) + W[t - 16];
++
++      /* The actual computation according to FIPS 180-2:6.3.2 step 3.  */
++      for (unsigned int t = 0; t < 80; ++t)
++	{
++	  uint64_t T1 = h + S1 (e) + Ch (e, f, g) + K[t] + W[t];
++	  uint64_t T2 = S0 (a) + Maj (a, b, c);
++	  h = g;
++	  g = f;
++	  f = e;
++	  e = d + T1;
++	  d = c;
++	  c = b;
++	  b = a;
++	  a = T1 + T2;
++	}
++
++      /* Add the starting values of the context according to FIPS 180-2:6.3.2
++	 step 4.  */
++      a += a_save;
++      b += b_save;
++      c += c_save;
++      d += d_save;
++      e += e_save;
++      f += f_save;
++      g += g_save;
++      h += h_save;
++
++      /* Prepare for the next round.  */
++      nwords -= 16;
++    }
++
++  /* Put checksum in context given as argument.  */
++  ctx->H[0] = a;
++  ctx->H[1] = b;
++  ctx->H[2] = c;
++  ctx->H[3] = d;
++  ctx->H[4] = e;
++  ctx->H[5] = f;
++  ctx->H[6] = g;
++  ctx->H[7] = h;
++}
++
++
++/* Initialize structure containing state of computation.
++   (FIPS 180-2:5.3.3)  */
++void
++__sha512_init_ctx (ctx)
++     struct sha512_ctx *ctx;
++{
++  ctx->H[0] = UINT64_C (0x6a09e667f3bcc908);
++  ctx->H[1] = UINT64_C (0xbb67ae8584caa73b);
++  ctx->H[2] = UINT64_C (0x3c6ef372fe94f82b);
++  ctx->H[3] = UINT64_C (0xa54ff53a5f1d36f1);
++  ctx->H[4] = UINT64_C (0x510e527fade682d1);
++  ctx->H[5] = UINT64_C (0x9b05688c2b3e6c1f);
++  ctx->H[6] = UINT64_C (0x1f83d9abfb41bd6b);
++  ctx->H[7] = UINT64_C (0x5be0cd19137e2179);
++
++  ctx->total[0] = ctx->total[1] = 0;
++  ctx->buflen = 0;
++}
++
++
++/* Process the remaining bytes in the internal buffer and the usual
++   prolog according to the standard and write the result to RESBUF.
++
++   IMPORTANT: On some systems it is required that RESBUF is correctly
++   aligned for a 32 bits value.  */
++void *
++__sha512_finish_ctx (ctx, resbuf)
++     struct sha512_ctx *ctx;
++     void *resbuf;
++{
++  /* Take yet unprocessed bytes into account.  */
++  uint64_t bytes = ctx->buflen;
++  size_t pad;
++
++  /* Now count remaining bytes.  */
++  ctx->total[0] += bytes;
++  if (ctx->total[0] < bytes)
++    ++ctx->total[1];
++
++  pad = bytes >= 112 ? 128 + 112 - bytes : 112 - bytes;
++  memcpy (&ctx->buffer[bytes], fillbuf, pad);
++
++  /* Put the 128-bit file length in *bits* at the end of the buffer.  */
++  *(uint64_t *) &ctx->buffer[bytes + pad + 8] = SWAP (ctx->total[0] << 3);
++  *(uint64_t *) &ctx->buffer[bytes + pad] = SWAP ((ctx->total[1] << 3) |
++						  (ctx->total[0] >> 61));
++
++  /* Process last bytes.  */
++  sha512_process_block (ctx->buffer, bytes + pad + 16, ctx);
++
++  /* Put result from CTX in first 64 bytes following RESBUF.  */
++  for (unsigned int i = 0; i < 8; ++i)
++    ((uint64_t *) resbuf)[i] = SWAP (ctx->H[i]);
++
++  return resbuf;
++}
++
++
++void
++__sha512_process_bytes (buffer, len, ctx)
++     const void *buffer;
++     size_t len;
++     struct sha512_ctx *ctx;
++{
++  /* When we already have some bits in our internal buffer concatenate
++     both inputs first.  */
++  if (ctx->buflen != 0)
++    {
++      size_t left_over = ctx->buflen;
++      size_t add = 256 - left_over > len ? len : 256 - left_over;
++
++      memcpy (&ctx->buffer[left_over], buffer, add);
++      ctx->buflen += add;
++
++      if (ctx->buflen > 128)
++	{
++	  sha512_process_block (ctx->buffer, ctx->buflen & ~127, ctx);
++
++	  ctx->buflen &= 127;
++	  /* The regions in the following copy operation cannot overlap.  */
++	  memcpy (ctx->buffer, &ctx->buffer[(left_over + add) & ~127],
++		  ctx->buflen);
++	}
++
++      buffer = (const char *) buffer + add;
++      len -= add;
++    }
++
++  /* Process available complete blocks.  */
++  if (len >= 128)
++    {
++#if !_STRING_ARCH_unaligned
++/* To check alignment gcc has an appropriate operator.  Other
++   compilers don't.  */
++# if __GNUC__ >= 2
++#  define UNALIGNED_P(p) (((uintptr_t) p) % __alignof__ (uint64_t) != 0)
++# else
++#  define UNALIGNED_P(p) (((uintptr_t) p) % sizeof (uint64_t) != 0)
++# endif
++      if (UNALIGNED_P (buffer))
++	while (len > 128)
++	  {
++	    sha512_process_block (memcpy (ctx->buffer, buffer, 128), 128,
++				    ctx);
++	    buffer = (const char *) buffer + 128;
++	    len -= 128;
++	  }
++      else
++#endif
++	{
++	  sha512_process_block (buffer, len & ~127, ctx);
++	  buffer = (const char *) buffer + (len & ~127);
++	  len &= 127;
++	}
++    }
++
++  /* Move remaining bytes into internal buffer.  */
++  if (len > 0)
++    {
++      size_t left_over = ctx->buflen;
++
++      memcpy (&ctx->buffer[left_over], buffer, len);
++      left_over += len;
++      if (left_over >= 128)
++	{
++	  sha512_process_block (ctx->buffer, 128, ctx);
++	  left_over -= 128;
++	  memcpy (ctx->buffer, &ctx->buffer[128], left_over);
++	}
++      ctx->buflen = left_over;
++    }
++}
+--- /dev/null
++++ uclibc.mod/libcrypt/sha512.h
+@@ -0,0 +1,58 @@
++/* Declaration of functions and data types used for SHA512 sum computing
++   library functions.
++   Copyright (C) 2007 Free Software Foundation, Inc.
++   This file is part of the GNU C Library.
++
++   The GNU C Library is free software; you can redistribute it and/or
++   modify it under the terms of the GNU Lesser General Public
++   License as published by the Free Software Foundation; either
++   version 2.1 of the License, or (at your option) any later version.
++
++   The GNU C Library is distributed in the hope that it will be useful,
++   but WITHOUT ANY WARRANTY; without even the implied warranty of
++   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
++   Lesser General Public License for more details.
++
++   You should have received a copy of the GNU Lesser General Public
++   License along with the GNU C Library; if not, write to the Free
++   Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA
++   02111-1307 USA.  */
++
++#ifndef _SHA512_H
++#define _SHA512_H 1
++
++#include <limits.h>
++#include <stdint.h>
++#include <stdio.h>
++
++
++/* Structure to save state of computation between the single steps.  */
++struct sha512_ctx
++{
++  uint64_t H[8];
++
++  uint64_t total[2];
++  uint64_t buflen;
++  char buffer[256] __attribute__ ((__aligned__ (__alignof__ (uint64_t))));
++};
++
++/* Initialize structure containing state of computation.
++   (FIPS 180-2: 5.3.3)  */
++extern void __sha512_init_ctx (struct sha512_ctx *ctx) __THROW;
++
++/* Starting with the result of former calls of this function (or the
++   initialization function update the context for the next LEN bytes
++   starting at BUFFER.
++   It is NOT required that LEN is a multiple of 128.  */
++extern void __sha512_process_bytes (const void *buffer, size_t len,
++				    struct sha512_ctx *ctx) __THROW;
++
++/* Process the remaining bytes in the buffer and put result from CTX
++   in first 64 bytes following RESBUF.
++
++   IMPORTANT: On some systems it is required that RESBUF is correctly
++   aligned for a 64 bits value.  */
++extern void *__sha512_finish_ctx (struct sha512_ctx *ctx, void *resbuf)
++  __THROW;
++
++#endif /* sha512.h */