diff options
Diffstat (limited to 'main/libc0.9.32/sha512-crypt.patch')
| -rw-r--r-- | main/libc0.9.32/sha512-crypt.patch | 1777 |
1 files changed, 0 insertions, 1777 deletions
diff --git a/main/libc0.9.32/sha512-crypt.patch b/main/libc0.9.32/sha512-crypt.patch deleted file mode 100644 index 6a4b1001b..000000000 --- a/main/libc0.9.32/sha512-crypt.patch +++ /dev/null @@ -1,1777 +0,0 @@ -From 71ad18ce94b15cd000a3e90a0a30ee81ac1b443a Mon Sep 17 00:00:00 2001 -From: William Pitcock <nenolod@dereferenced.org> -Date: Wed, 16 Nov 2011 05:27:48 -0600 -Subject: [PATCH 1/2] libcrypt: make crypt() more modular -To: uclibc@uclibc.org - -By using a function table, we can more cleanly support new crypt -implementations, such as SHA256 ($5$) and SHA512 ($6$). - -Signed-off-by: William Pitcock <nenolod@dereferenced.org> ---- - libcrypt/crypt.c | 34 ++++++++++++++++++++++++++++------ - 1 files changed, 28 insertions(+), 6 deletions(-) - -diff --git a/libcrypt/crypt.c b/libcrypt/crypt.c -index 8b361d3..28cbc70 100644 ---- a/libcrypt/crypt.c -+++ b/libcrypt/crypt.c -@@ -8,14 +8,36 @@ - #define __FORCE_GLIBC - #include <crypt.h> - #include <unistd.h> -+#include <string.h> -+#include <syscall.h> - #include "libcrypt.h" - -+#define ARRAY_SIZE(v) (sizeof(v) / sizeof((v)[0])) -+ -+typedef char *(*crypt_impl_f)(const unsigned char *pw, const unsigned char *salt); -+ -+static const struct { -+ const char *salt_pfx; -+ const crypt_impl_f crypt_impl; -+} crypt_impl_tab[] = { -+ { "$1$", __md5_crypt }, -+ { NULL, __des_crypt }, -+}; -+ - char *crypt(const char *key, const char *salt) - { -- /* First, check if we are supposed to be using the MD5 replacement -- * instead of DES... */ -- if (salt[0]=='$' && salt[1]=='1' && salt[2]=='$') -- return __md5_crypt((unsigned char*)key, (unsigned char*)salt); -- else -- return __des_crypt((unsigned char*)key, (unsigned char*)salt); -+ unsigned int i; -+ -+ for (i = 0; i < ARRAY_SIZE(crypt_impl_tab); i++) -+ { -+ if (crypt_impl_tab[i].salt_pfx && -+ strncmp(crypt_impl_tab[i].salt_pfx, salt, strlen(crypt_impl_tab[i].salt_pfx))) -+ continue; -+ -+ return crypt_impl_tab[i].crypt_impl((unsigned char *) key, (unsigned char *) salt); -+ } -+ -+ /* this should never happen, but just incase... */ -+ __set_errno(ENOSYS); -+ return NULL; - } --- -1.7.7.3 - -From 3c0ca4dcbb38987bda7981f6c876a291d3051f12 Mon Sep 17 00:00:00 2001 -From: William Pitcock <nenolod@dereferenced.org> -Date: Wed, 16 Nov 2011 05:53:34 -0600 -Subject: [PATCH 2/2] libcrypt: add support for SHA512-crypt. -To: uclibc@uclibc.org - -This is based on Ulrich Drepper's implementation in GLIBC, but hacked up to work -in uClibc. A previous version of this patch was rejected, this is the cleaned up -version. - -Signed-off-by: William Pitcock <nenolod@dereferenced.org> ---- - extra/Configs/Config.in | 6 + - libcrypt/Makefile.in | 1 + - libcrypt/crypt.c | 3 + - libcrypt/libcrypt.h | 3 + - libcrypt/sha512-crypt.c | 339 +++++++++++++++++++++++++++++++++++++++++++++++ - libcrypt/sha512.c | 326 +++++++++++++++++++++++++++++++++++++++++++++ - libcrypt/sha512.h | 58 ++++++++ - 7 files changed, 736 insertions(+), 0 deletions(-) - create mode 100644 libcrypt/sha512-crypt.c - create mode 100644 libcrypt/sha512.c - create mode 100644 libcrypt/sha512.h - -diff --git a/extra/Configs/Config.in b/extra/Configs/Config.in -index 0f0ccfe..1ec041d 100644 ---- a/extra/Configs/Config.in -+++ b/extra/Configs/Config.in -@@ -1174,6 +1174,12 @@ config UCLIBC_HAS_CRYPT_IMPL - help - libcrypt contains crypt(), setkey() and encrypt() - -+config UCLIBC_HAS_SHA512_CRYPT_IMPL -+ bool "libcrypt SHA512 support" -+ default y -+ help -+ Say N here if you do not need SHA512 crypt support. -+ - config UCLIBC_HAS_CRYPT_STUB - bool "libcrypt stubs" - default y -diff --git a/libcrypt/Makefile.in b/libcrypt/Makefile.in -index 1d1fb55..2fceaed 100644 ---- a/libcrypt/Makefile.in -+++ b/libcrypt/Makefile.in -@@ -21,6 +21,7 @@ libcrypt_OUT := $(top_builddir)libcrypt - - libcrypt_SRC-y := - libcrypt_SRC-$(UCLIBC_HAS_CRYPT_IMPL) += crypt.c des.c md5.c -+libcrypt_SRC-$(UCLIBC_HAS_SHA512_CRYPT_IMPL) += sha512.c sha512-crypt.c - libcrypt_SRC-$(UCLIBC_HAS_CRYPT_STUB) += crypt_stub.c - - libcrypt_SRC := $(addprefix $(libcrypt_DIR)/,$(libcrypt_SRC-y)) -diff --git a/libcrypt/crypt.c b/libcrypt/crypt.c -index 28cbc70..2bb2c33 100644 ---- a/libcrypt/crypt.c -+++ b/libcrypt/crypt.c -@@ -21,6 +21,9 @@ static const struct { - const crypt_impl_f crypt_impl; - } crypt_impl_tab[] = { - { "$1$", __md5_crypt }, -+#ifdef __UCLIBC_HAS_SHA512_CRYPT_IMPL__ -+ { "$6$", __sha512_crypt }, -+#endif - { NULL, __des_crypt }, - }; - -diff --git a/libcrypt/libcrypt.h b/libcrypt/libcrypt.h -index 1186620..fcad6ae 100644 ---- a/libcrypt/libcrypt.h -+++ b/libcrypt/libcrypt.h -@@ -9,8 +9,11 @@ - #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; - -+extern char *__sha512_crypt_r (const char *key, const char *salt, char *buffer, int buflen) attribute_hidden; -+ - /* shut up gcc-4.x signed warnings */ - #define strcpy(dst,src) strcpy((char*)dst,(char*)src) - #define strlen(s) strlen((char*)s) -diff --git a/libcrypt/sha512-crypt.c b/libcrypt/sha512-crypt.c -new file mode 100644 -index 0000000..dece925 ---- /dev/null -+++ b/libcrypt/sha512-crypt.c -@@ -0,0 +1,339 @@ -+/* 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" -+#include "libcrypt.h" -+ -+/* 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"; -+ -+char * -+__sha512_crypt_r (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); -+ } -+ -+ struct sha512_ctx ctx; -+ struct sha512_ctx alt_ctx; -+ -+ /* Prepare for the real work. */ -+ __sha512_init_ctx (&ctx); -+ -+ /* Add the key string. */ -+ __sha512_process_bytes (key, key_len, &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); -+ -+ -+ /* 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); -+ -+ /* Add key. */ -+ __sha512_process_bytes (key, key_len, &alt_ctx); -+ -+ /* Add salt. */ -+ __sha512_process_bytes (salt, salt_len, &alt_ctx); -+ -+ /* Add key again. */ -+ __sha512_process_bytes (key, key_len, &alt_ctx); -+ -+ /* Now get result of this (64 bytes) and add it to the other -+ context. */ -+ __sha512_finish_ctx (&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); -+ -+ __sha512_process_bytes (alt_result, cnt, &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); -+ else -+ __sha512_process_bytes (key, key_len, &ctx); -+ -+ /* Create intermediate result. */ -+ __sha512_finish_ctx (&ctx, alt_result); -+ -+ /* Start computation of P byte sequence. */ -+ __sha512_init_ctx (&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); -+ -+ /* Finish the digest. */ -+ __sha512_finish_ctx (&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); -+ -+ /* 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); -+ -+ /* Finish the digest. */ -+ __sha512_finish_ctx (&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); -+ -+ /* Add key or last result. */ -+ if ((cnt & 1) != 0) -+ __sha512_process_bytes (p_bytes, key_len, &ctx); -+ else -+ __sha512_process_bytes (alt_result, 64, &ctx); -+ -+ /* Add salt for numbers not divisible by 3. */ -+ if (cnt % 3 != 0) -+ __sha512_process_bytes (s_bytes, salt_len, &ctx); -+ -+ /* Add key for numbers not divisible by 7. */ -+ if (cnt % 7 != 0) -+ __sha512_process_bytes (p_bytes, key_len, &ctx); -+ -+ /* Add key or last result. */ -+ if ((cnt & 1) != 0) -+ __sha512_process_bytes (alt_result, 64, &ctx); -+ else -+ __sha512_process_bytes (p_bytes, key_len, &ctx); -+ -+ /* Create intermediate result. */ -+ __sha512_finish_ctx (&ctx, alt_result); -+ } -+ -+ /* 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. */ -+ __sha512_init_ctx (&ctx); -+ __sha512_finish_ctx (&ctx, alt_result); -+ memset (&ctx, '\0', sizeof (ctx)); -+ memset (&alt_ctx, '\0', sizeof (alt_ctx)); -+ -+ 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; -+} -+ -+static char *buffer; -+ -+/* This entry point is equivalent to the `crypt' function in Unix -+ libcs. */ -+char * -+__sha512_crypt (const unsigned char *key, const unsigned 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 ((const char *) key, (const char *) salt, buffer, buflen); -+} -diff --git a/libcrypt/sha512.c b/libcrypt/sha512.c -new file mode 100644 -index 0000000..04e0a06 ---- /dev/null -+++ b/libcrypt/sha512.c -@@ -0,0 +1,326 @@ -+/* 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 (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 (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 (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 __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 -+ { -+ 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; -+ } -+} -diff --git a/libcrypt/sha512.h b/libcrypt/sha512.h -new file mode 100644 -index 0000000..5777827 ---- /dev/null -+++ b/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) attribute_hidden; -+ -+/* 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) attribute_hidden; -+ -+/* 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) -+ attribute_hidden; -+ -+#endif /* sha512.h */ --- -1.7.7.3 - -From aad4fe2d08d930f3a63a5e31ec315cbedb1aa965 Mon Sep 17 00:00:00 2001 -From: William Pitcock <nenolod@dereferenced.org> -Date: Wed, 16 Nov 2011 06:05:07 -0600 -Subject: [PATCH] libcrypt/sha512-crypt: convert nested function - b64_from_24bit() into a macro - -The glibc implementation of sha512-crypt used inline functions which should -really be converted into a macro because otherwise a trampoline is potentially -created. - -Signed-off-by: William Pitcock <nenolod@dereferenced.org> ---- - libcrypt/sha512-crypt.c | 68 +++++++++++++++++++++++----------------------- - 1 files changed, 34 insertions(+), 34 deletions(-) - -diff --git a/libcrypt/sha512-crypt.c b/libcrypt/sha512-crypt.c -index dece925..0321be0 100644 ---- a/libcrypt/sha512-crypt.c -+++ b/libcrypt/sha512-crypt.c -@@ -48,6 +48,18 @@ static const char sha512_rounds_prefix[] = "rounds="; - static const char b64t[64] = - "./0123456789ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz"; - -+#define B64_FROM_24BIT(b2, b1, b0, steps) \ -+ { \ -+ int n = (steps); \ -+ unsigned int w = ((b2) << 16) | ((b1) << 8) | (b0); \ -+ while (n-- > 0 && buflen > 0) \ -+ { \ -+ *cp++ = b64t[w & 0x3f]; \ -+ --buflen; \ -+ w >>= 6; \ -+ } \ -+ } -+ - char * - __sha512_crypt_r (const char *key, - const char *salt, -@@ -246,40 +258,28 @@ __sha512_crypt_r (const char *key, - --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); -+ 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) - { --- -1.7.7.3 - -From 9b463f10d2b395c80533fa44876f6a387fc69289 Mon Sep 17 00:00:00 2001 -From: William Pitcock <nenolod@dereferenced.org> -Date: Wed, 16 Nov 2011 06:22:36 -0600 -Subject: [PATCH] libcrypt: add SHA256 crypt support. -To: uclibc@uclibc.org - -This is based on Ulrich Drepper's SHA256 crypt implementation in GLIBC. -I decided to add support for this as an option as there have been a few other -SHA256 patches proposed recently. - -Signed-off-by: William Pitcock <nenolod@dereferenced.org> ---- - extra/Configs/Config.in | 6 + - libcrypt/Makefile.in | 1 + - libcrypt/crypt.c | 3 + - libcrypt/libcrypt.h | 2 + - libcrypt/sha256-crypt.c | 326 +++++++++++++++++++++++++++++++++++++++++++++++ - libcrypt/sha256.c | 294 ++++++++++++++++++++++++++++++++++++++++++ - libcrypt/sha256.h | 58 +++++++++ - 7 files changed, 690 insertions(+), 0 deletions(-) - create mode 100644 libcrypt/sha256-crypt.c - create mode 100644 libcrypt/sha256.c - create mode 100644 libcrypt/sha256.h - -diff --git a/extra/Configs/Config.in b/extra/Configs/Config.in -index 1ec041d..56db0c4 100644 ---- a/extra/Configs/Config.in -+++ b/extra/Configs/Config.in -@@ -1174,6 +1174,12 @@ config UCLIBC_HAS_CRYPT_IMPL - help - libcrypt contains crypt(), setkey() and encrypt() - -+config UCLIBC_HAS_SHA256_CRYPT_IMPL -+ bool "libcrypt SHA256 support" -+ default y -+ help -+ Say N here if you do not need SHA256 crypt support. -+ - config UCLIBC_HAS_SHA512_CRYPT_IMPL - bool "libcrypt SHA512 support" - default y -diff --git a/libcrypt/Makefile.in b/libcrypt/Makefile.in -index 2fceaed..94753f4 100644 ---- a/libcrypt/Makefile.in -+++ b/libcrypt/Makefile.in -@@ -21,6 +21,7 @@ libcrypt_OUT := $(top_builddir)libcrypt - - libcrypt_SRC-y := - libcrypt_SRC-$(UCLIBC_HAS_CRYPT_IMPL) += crypt.c des.c md5.c -+libcrypt_SRC-$(UCLIBC_HAS_SHA256_CRYPT_IMPL) += sha256.c sha256-crypt.c - libcrypt_SRC-$(UCLIBC_HAS_SHA512_CRYPT_IMPL) += sha512.c sha512-crypt.c - libcrypt_SRC-$(UCLIBC_HAS_CRYPT_STUB) += crypt_stub.c - -diff --git a/libcrypt/crypt.c b/libcrypt/crypt.c -index 2bb2c33..15e3b29 100644 ---- a/libcrypt/crypt.c -+++ b/libcrypt/crypt.c -@@ -21,6 +21,9 @@ static const struct { - const crypt_impl_f crypt_impl; - } crypt_impl_tab[] = { - { "$1$", __md5_crypt }, -+#ifdef __UCLIBC_HAS_SHA256_CRYPT_IMPL__ -+ { "$5$", __sha256_crypt }, -+#endif - #ifdef __UCLIBC_HAS_SHA512_CRYPT_IMPL__ - { "$6$", __sha512_crypt }, - #endif -diff --git a/libcrypt/libcrypt.h b/libcrypt/libcrypt.h -index fcad6ae..67733d1 100644 ---- a/libcrypt/libcrypt.h -+++ b/libcrypt/libcrypt.h -@@ -9,9 +9,11 @@ - #define __LIBCRYPT_H__ - - extern char *__md5_crypt(const unsigned char *pw, const unsigned char *salt) attribute_hidden; -+extern char *__sha256_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; - -+extern char *__sha256_crypt_r (const char *key, const char *salt, char *buffer, int buflen) attribute_hidden; - extern char *__sha512_crypt_r (const char *key, const char *salt, char *buffer, int buflen) attribute_hidden; - - /* shut up gcc-4.x signed warnings */ -diff --git a/libcrypt/sha256-crypt.c b/libcrypt/sha256-crypt.c -new file mode 100644 -index 0000000..4422148 ---- /dev/null -+++ b/libcrypt/sha256-crypt.c -@@ -0,0 +1,326 @@ -+/* One way encryption based on SHA256 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 "sha256.h" -+#include "libcrypt.h" -+ -+/* Define our magic string to mark salt for SHA256 "encryption" -+ replacement. */ -+static const char sha256_salt_prefix[] = "$5$"; -+ -+/* Prefix for optional rounds specification. */ -+static const char sha256_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"; -+ -+#define B64_FROM_24BIT(b2, b1, b0, steps) \ -+ { \ -+ int n = (steps); \ -+ unsigned int w = ((b2) << 16) | ((b1) << 8) | (b0); \ -+ while (n-- > 0 && buflen > 0) \ -+ { \ -+ *cp++ = b64t[w & 0x3f]; \ -+ --buflen; \ -+ w >>= 6; \ -+ } \ -+ } -+ -+char * -+__sha256_crypt_r (const char *key, -+ const char *salt, -+ char *buffer, -+ int buflen) -+{ -+ unsigned char alt_result[32] -+ __attribute__ ((__aligned__ (__alignof__ (uint32_t)))); -+ unsigned char temp_result[32] -+ __attribute__ ((__aligned__ (__alignof__ (uint32_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 (sha256_salt_prefix, salt, sizeof (sha256_salt_prefix) - 1) == 0) -+ /* Skip salt prefix. */ -+ salt += sizeof (sha256_salt_prefix) - 1; -+ -+ if (strncmp (salt, sha256_rounds_prefix, sizeof (sha256_rounds_prefix) - 1) -+ == 0) -+ { -+ const char *num = salt + sizeof (sha256_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__ (uint32_t) != 0) -+ { -+ char *tmp = (char *) alloca (key_len + __alignof__ (uint32_t)); -+ key = copied_key = -+ memcpy (tmp + __alignof__ (uint32_t) -+ - (tmp - (char *) 0) % __alignof__ (uint32_t), -+ key, key_len); -+ assert ((key - (char *) 0) % __alignof__ (uint32_t) == 0); -+ } -+ -+ if ((salt - (char *) 0) % __alignof__ (uint32_t) != 0) -+ { -+ char *tmp = (char *) alloca (salt_len + __alignof__ (uint32_t)); -+ salt = copied_salt = -+ memcpy (tmp + __alignof__ (uint32_t) -+ - (tmp - (char *) 0) % __alignof__ (uint32_t), -+ salt, salt_len); -+ assert ((salt - (char *) 0) % __alignof__ (uint32_t) == 0); -+ } -+ -+ struct sha256_ctx ctx; -+ struct sha256_ctx alt_ctx; -+ -+ /* Prepare for the real work. */ -+ __sha256_init_ctx (&ctx); -+ -+ /* Add the key string. */ -+ __sha256_process_bytes (key, key_len, &ctx); -+ -+ /* The last part is the salt string. This must be at most 16 -+ characters and it ends at the first `$' character. */ -+ __sha256_process_bytes (salt, salt_len, &ctx); -+ -+ -+ /* Compute alternate SHA256 sum with input KEY, SALT, and KEY. The -+ final result will be added to the first context. */ -+ __sha256_init_ctx (&alt_ctx); -+ -+ /* Add key. */ -+ __sha256_process_bytes (key, key_len, &alt_ctx); -+ -+ /* Add salt. */ -+ __sha256_process_bytes (salt, salt_len, &alt_ctx); -+ -+ /* Add key again. */ -+ __sha256_process_bytes (key, key_len, &alt_ctx); -+ -+ /* Now get result of this (32 bytes) and add it to the other -+ context. */ -+ __sha256_finish_ctx (&alt_ctx, alt_result); -+ -+ /* Add for any character in the key one byte of the alternate sum. */ -+ for (cnt = key_len; cnt > 32; cnt -= 32) -+ __sha256_process_bytes (alt_result, 32, &ctx); -+ __sha256_process_bytes (alt_result, cnt, &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) -+ __sha256_process_bytes (alt_result, 32, &ctx); -+ else -+ __sha256_process_bytes (key, key_len, &ctx); -+ -+ /* Create intermediate result. */ -+ __sha256_finish_ctx (&ctx, alt_result); -+ -+ /* Start computation of P byte sequence. */ -+ __sha256_init_ctx (&alt_ctx); -+ -+ /* For every character in the password add the entire password. */ -+ for (cnt = 0; cnt < key_len; ++cnt) -+ __sha256_process_bytes (key, key_len, &alt_ctx); -+ -+ /* Finish the digest. */ -+ __sha256_finish_ctx (&alt_ctx, temp_result); -+ -+ /* Create byte sequence P. */ -+ cp = p_bytes = alloca (key_len); -+ for (cnt = key_len; cnt >= 32; cnt -= 32) -+ cp = mempcpy (cp, temp_result, 32); -+ memcpy (cp, temp_result, cnt); -+ -+ /* Start computation of S byte sequence. */ -+ __sha256_init_ctx (&alt_ctx); -+ -+ /* For every character in the password add the entire password. */ -+ for (cnt = 0; cnt < 16 + alt_result[0]; ++cnt) -+ __sha256_process_bytes (salt, salt_len, &alt_ctx); -+ -+ /* Finish the digest. */ -+ __sha256_finish_ctx (&alt_ctx, temp_result); -+ -+ /* Create byte sequence S. */ -+ cp = s_bytes = alloca (salt_len); -+ for (cnt = salt_len; cnt >= 32; cnt -= 32) -+ cp = mempcpy (cp, temp_result, 32); -+ memcpy (cp, temp_result, cnt); -+ -+ /* Repeatedly run the collected hash value through SHA256 to burn -+ CPU cycles. */ -+ for (cnt = 0; cnt < rounds; ++cnt) -+ { -+ /* New context. */ -+ __sha256_init_ctx (&ctx); -+ -+ /* Add key or last result. */ -+ if ((cnt & 1) != 0) -+ __sha256_process_bytes (p_bytes, key_len, &ctx); -+ else -+ __sha256_process_bytes (alt_result, 32, &ctx); -+ -+ /* Add salt for numbers not divisible by 3. */ -+ if (cnt % 3 != 0) -+ __sha256_process_bytes (s_bytes, salt_len, &ctx); -+ -+ /* Add key for numbers not divisible by 7. */ -+ if (cnt % 7 != 0) -+ __sha256_process_bytes (p_bytes, key_len, &ctx); -+ -+ /* Add key or last result. */ -+ if ((cnt & 1) != 0) -+ __sha256_process_bytes (alt_result, 32, &ctx); -+ else -+ __sha256_process_bytes (p_bytes, key_len, &ctx); -+ -+ /* Create intermediate result. */ -+ __sha256_finish_ctx (&ctx, alt_result); -+ } -+ -+ /* Now we can construct the result string. It consists of three -+ parts. */ -+ cp = stpncpy (buffer, sha256_salt_prefix, MAX (0, buflen)); -+ buflen -= sizeof (sha256_salt_prefix) - 1; -+ -+ if (rounds_custom) -+ { -+ int n = snprintf (cp, MAX (0, buflen), "%s%zu$", -+ sha256_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; -+ } -+ -+ B64_FROM_24BIT (alt_result[0], alt_result[10], alt_result[20], 4); -+ B64_FROM_24BIT (alt_result[21], alt_result[1], alt_result[11], 4); -+ B64_FROM_24BIT (alt_result[12], alt_result[22], alt_result[2], 4); -+ B64_FROM_24BIT (alt_result[3], alt_result[13], alt_result[23], 4); -+ B64_FROM_24BIT (alt_result[24], alt_result[4], alt_result[14], 4); -+ B64_FROM_24BIT (alt_result[15], alt_result[25], alt_result[5], 4); -+ B64_FROM_24BIT (alt_result[6], alt_result[16], alt_result[26], 4); -+ B64_FROM_24BIT (alt_result[27], alt_result[7], alt_result[17], 4); -+ B64_FROM_24BIT (alt_result[18], alt_result[28], alt_result[8], 4); -+ B64_FROM_24BIT (alt_result[9], alt_result[19], alt_result[29], 4); -+ B64_FROM_24BIT (0, alt_result[31], alt_result[30], 3); -+ 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 SHA256 implementation as well. */ -+ __sha256_init_ctx (&ctx); -+ __sha256_finish_ctx (&ctx, alt_result); -+ memset (&ctx, '\0', sizeof (ctx)); -+ memset (&alt_ctx, '\0', sizeof (alt_ctx)); -+ -+ 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; -+} -+ -+static char *buffer; -+ -+/* This entry point is equivalent to the `crypt' function in Unix -+ libcs. */ -+char * -+__sha256_crypt (const unsigned char *key, const unsigned 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 -+ `sha256_crypt_r'. */ -+ static int buflen; -+ int needed = (sizeof (sha256_salt_prefix) - 1 -+ + sizeof (sha256_rounds_prefix) + 9 + 1 -+ + strlen (salt) + 1 + 43 + 1); -+ -+ if (buflen < needed) -+ { -+ char *new_buffer = (char *) realloc (buffer, needed); -+ if (new_buffer == NULL) -+ return NULL; -+ -+ buffer = new_buffer; -+ buflen = needed; -+ } -+ -+ return __sha256_crypt_r ((const char *) key, (const char *) salt, buffer, buflen); -+} -diff --git a/libcrypt/sha256.c b/libcrypt/sha256.c -new file mode 100644 -index 0000000..e652a67 ---- /dev/null -+++ b/libcrypt/sha256.c -@@ -0,0 +1,294 @@ -+/* Functions to compute SHA256 message digest of files or memory blocks. -+ according to the definition of SHA256 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 "sha256.h" -+ -+#if __BYTE_ORDER == __LITTLE_ENDIAN -+# ifdef _LIBC -+# include <byteswap.h> -+# define SWAP(n) bswap_32 (n) -+# else -+# define SWAP(n) \ -+ (((n) << 24) | (((n) & 0xff00) << 8) | (((n) >> 8) & 0xff00) | ((n) >> 24)) -+# endif -+#else -+# define SWAP(n) (n) -+#endif -+ -+ -+/* This array contains the bytes used to pad the buffer to the next -+ 64-byte boundary. (FIPS 180-2:5.1.1) */ -+static const unsigned char fillbuf[64] = { 0x80, 0 /* , 0, 0, ... */ }; -+ -+ -+/* Constants for SHA256 from FIPS 180-2:4.2.2. */ -+static const uint32_t K[64] = -+ { -+ 0x428a2f98, 0x71374491, 0xb5c0fbcf, 0xe9b5dba5, -+ 0x3956c25b, 0x59f111f1, 0x923f82a4, 0xab1c5ed5, -+ 0xd807aa98, 0x12835b01, 0x243185be, 0x550c7dc3, -+ 0x72be5d74, 0x80deb1fe, 0x9bdc06a7, 0xc19bf174, -+ 0xe49b69c1, 0xefbe4786, 0x0fc19dc6, 0x240ca1cc, -+ 0x2de92c6f, 0x4a7484aa, 0x5cb0a9dc, 0x76f988da, -+ 0x983e5152, 0xa831c66d, 0xb00327c8, 0xbf597fc7, -+ 0xc6e00bf3, 0xd5a79147, 0x06ca6351, 0x14292967, -+ 0x27b70a85, 0x2e1b2138, 0x4d2c6dfc, 0x53380d13, -+ 0x650a7354, 0x766a0abb, 0x81c2c92e, 0x92722c85, -+ 0xa2bfe8a1, 0xa81a664b, 0xc24b8b70, 0xc76c51a3, -+ 0xd192e819, 0xd6990624, 0xf40e3585, 0x106aa070, -+ 0x19a4c116, 0x1e376c08, 0x2748774c, 0x34b0bcb5, -+ 0x391c0cb3, 0x4ed8aa4a, 0x5b9cca4f, 0x682e6ff3, -+ 0x748f82ee, 0x78a5636f, 0x84c87814, 0x8cc70208, -+ 0x90befffa, 0xa4506ceb, 0xbef9a3f7, 0xc67178f2 -+ }; -+ -+ -+/* Process LEN bytes of BUFFER, accumulating context into CTX. -+ It is assumed that LEN % 64 == 0. */ -+static void -+sha256_process_block (const void *buffer, size_t len, struct sha256_ctx *ctx) -+{ -+ const uint32_t *words = buffer; -+ size_t nwords = len / sizeof (uint32_t); -+ uint32_t a = ctx->H[0]; -+ uint32_t b = ctx->H[1]; -+ uint32_t c = ctx->H[2]; -+ uint32_t d = ctx->H[3]; -+ uint32_t e = ctx->H[4]; -+ uint32_t f = ctx->H[5]; -+ uint32_t g = ctx->H[6]; -+ uint32_t h = ctx->H[7]; -+ -+ /* First increment the byte count. FIPS 180-2 specifies the possible -+ length of the file up to 2^64 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 64 bytes in each round of -+ the loop. */ -+ while (nwords > 0) -+ { -+ uint32_t W[64]; -+ uint32_t a_save = a; -+ uint32_t b_save = b; -+ uint32_t c_save = c; -+ uint32_t d_save = d; -+ uint32_t e_save = e; -+ uint32_t f_save = f; -+ uint32_t g_save = g; -+ uint32_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, 2) ^ CYCLIC (x, 13) ^ CYCLIC (x, 22)) -+#define S1(x) (CYCLIC (x, 6) ^ CYCLIC (x, 11) ^ CYCLIC (x, 25)) -+#define R0(x) (CYCLIC (x, 7) ^ CYCLIC (x, 18) ^ (x >> 3)) -+#define R1(x) (CYCLIC (x, 17) ^ CYCLIC (x, 19) ^ (x >> 10)) -+ -+ /* 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 << (32 - s))) -+ -+ /* Compute the message schedule according to FIPS 180-2:6.2.2 step 2. */ -+ for (unsigned int t = 0; t < 16; ++t) -+ { -+ W[t] = SWAP (*words); -+ ++words; -+ } -+ for (unsigned int t = 16; t < 64; ++t) -+ W[t] = R1 (W[t - 2]) + W[t - 7] + R0 (W[t - 15]) + W[t - 16]; -+ -+ /* The actual computation according to FIPS 180-2:6.2.2 step 3. */ -+ for (unsigned int t = 0; t < 64; ++t) -+ { -+ uint32_t T1 = h + S1 (e) + Ch (e, f, g) + K[t] + W[t]; -+ uint32_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 180-2:6.2.2 -+ 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 180-2:5.3.2) */ -+void -+__sha256_init_ctx (struct sha256_ctx *ctx) -+{ -+ ctx->H[0] = 0x6a09e667; -+ ctx->H[1] = 0xbb67ae85; -+ ctx->H[2] = 0x3c6ef372; -+ ctx->H[3] = 0xa54ff53a; -+ ctx->H[4] = 0x510e527f; -+ ctx->H[5] = 0x9b05688c; -+ ctx->H[6] = 0x1f83d9ab; -+ ctx->H[7] = 0x5be0cd19; -+ -+ 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 * -+__sha256_finish_ctx (struct sha256_ctx *ctx, void *resbuf) -+{ -+ /* Take yet unprocessed bytes into account. */ -+ uint32_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 >= 56 ? 64 + 56 - bytes : 56 - bytes; -+ memcpy (&ctx->buffer[bytes], fillbuf, pad); -+ -+ /* Put the 64-bit file length in *bits* at the end of the buffer. */ -+ *(uint32_t *) &ctx->buffer[bytes + pad + 4] = SWAP (ctx->total[0] << 3); -+ *(uint32_t *) &ctx->buffer[bytes + pad] = SWAP ((ctx->total[1] << 3) | -+ (ctx->total[0] >> 29)); -+ -+ /* Process last bytes. */ -+ sha256_process_block (ctx->buffer, bytes + pad + 8, ctx); -+ -+ /* Put result from CTX in first 32 bytes following RESBUF. */ -+ for (unsigned int i = 0; i < 8; ++i) -+ ((uint32_t *) resbuf)[i] = SWAP (ctx->H[i]); -+ -+ return resbuf; -+} -+ -+ -+void -+__sha256_process_bytes (const void *buffer, size_t len, struct sha256_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 = 128 - left_over > len ? len : 128 - left_over; -+ -+ memcpy (&ctx->buffer[left_over], buffer, add); -+ ctx->buflen += add; -+ -+ if (ctx->buflen > 64) -+ { -+ sha256_process_block (ctx->buffer, ctx->buflen & ~63, ctx); -+ -+ ctx->buflen &= 63; -+ /* The regions in the following copy operation cannot overlap. */ -+ memcpy (ctx->buffer, &ctx->buffer[(left_over + add) & ~63], -+ ctx->buflen); -+ } -+ -+ buffer = (const char *) buffer + add; -+ len -= add; -+ } -+ -+ /* Process available complete blocks. */ -+ if (len >= 64) -+ { -+#if __GNUC__ >= 2 -+# define UNALIGNED_P(p) (((uintptr_t) p) % __alignof__ (uint32_t) != 0) -+#else -+# define UNALIGNED_P(p) (((uintptr_t) p) % sizeof (uint32_t) != 0) -+#endif -+ if (UNALIGNED_P (buffer)) -+ while (len > 64) -+ { -+ sha256_process_block (memcpy (ctx->buffer, buffer, 64), 64, ctx); -+ buffer = (const char *) buffer + 64; -+ len -= 64; -+ } -+ else -+ { -+ sha256_process_block (buffer, len & ~63, ctx); -+ buffer = (const char *) buffer + (len & ~63); -+ len &= 63; -+ } -+ } -+ -+ /* 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 >= 64) -+ { -+ sha256_process_block (ctx->buffer, 64, ctx); -+ left_over -= 64; -+ memcpy (ctx->buffer, &ctx->buffer[64], left_over); -+ } -+ ctx->buflen = left_over; -+ } -+} -diff --git a/libcrypt/sha256.h b/libcrypt/sha256.h -new file mode 100644 -index 0000000..291674f ---- /dev/null -+++ b/libcrypt/sha256.h -@@ -0,0 +1,58 @@ -+/* Declaration of functions and data types used for SHA256 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 _SHA256_H -+#define _SHA256_H 1 -+ -+#include <limits.h> -+#include <stdint.h> -+#include <stdio.h> -+ -+ -+/* Structure to save state of computation between the single steps. */ -+struct sha256_ctx -+{ -+ uint32_t H[8]; -+ -+ uint32_t total[2]; -+ uint32_t buflen; -+ char buffer[128] __attribute__ ((__aligned__ (__alignof__ (uint32_t)))); -+}; -+ -+/* Initialize structure containing state of computation. -+ (FIPS 180-2: 5.3.2) */ -+extern void __sha256_init_ctx (struct sha256_ctx *ctx) attribute_hidden; -+ -+/* 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 64. */ -+extern void __sha256_process_bytes (const void *buffer, size_t len, -+ struct sha256_ctx *ctx) attribute_hidden; -+ -+/* Process the remaining bytes in the buffer and put result from CTX -+ in first 32 bytes following RESBUF. -+ -+ IMPORTANT: On some systems it is required that RESBUF is correctly -+ aligned for a 32 bits value. */ -+extern void *__sha256_finish_ctx (struct sha256_ctx *ctx, void *resbuf) -+ attribute_hidden; -+ -+#endif /* sha256.h */ --- -1.7.7.3 - |