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libselinux/0001-Use-SHA-2-instead-of-SHA-1.patch
Petr Lautrbach 6d5c5e5819 SELinux userspace 3.8-rc1 release 
Resolves: RHEL-69451
2024-12-05 17:32:45 +01:00

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From 4780b755bb1171f5aa4cd7545535839d451a2070 Mon Sep 17 00:00:00 2001
From: Petr Lautrbach <plautrba@redhat.com>
Date: Fri, 30 Jul 2021 14:14:37 +0200
Subject: [PATCH] Use SHA-2 instead of SHA-1
Content-type: text/plain
The use of SHA-1 in RHEL9 is deprecated
---
libselinux/include/selinux/label.h | 6 +-
libselinux/include/selinux/restorecon.h | 4 +-
libselinux/man/man3/selabel_digest.3 | 4 +-
libselinux/man/man3/selabel_open.3 | 2 +-
libselinux/man/man3/selinux_restorecon.3 | 18 +-
.../man/man3/selinux_restorecon_xattr.3 | 2 +-
libselinux/src/Makefile | 2 +-
libselinux/src/label_file.c | 40 +--
libselinux/src/label_internal.h | 10 +-
libselinux/src/label_support.c | 10 +-
libselinux/src/selinux_restorecon.c | 24 +-
libselinux/src/sha1.c | 223 -------------
libselinux/src/sha1.h | 85 -----
libselinux/src/sha256.c | 294 ++++++++++++++++++
libselinux/src/sha256.h | 89 ++++++
libselinux/utils/selabel_digest.c | 26 +-
.../selabel_get_digests_all_partial_matches.c | 28 +-
17 files changed, 471 insertions(+), 396 deletions(-)
delete mode 100644 libselinux/src/sha1.c
delete mode 100644 libselinux/src/sha1.h
create mode 100644 libselinux/src/sha256.c
create mode 100644 libselinux/src/sha256.h
diff --git a/libselinux/include/selinux/label.h b/libselinux/include/selinux/label.h
index ce189a3ae2fe..ce77d32dfed1 100644
--- a/libselinux/include/selinux/label.h
+++ b/libselinux/include/selinux/label.h
@@ -120,13 +120,13 @@ extern int selabel_lookup_best_match_raw(struct selabel_handle *rec, char **con,
const char *key, const char **aliases, int type);
/**
- * selabel_digest - Retrieve the SHA1 digest and the list of specfiles used to
+ * selabel_digest - Retrieve the SHA256 digest and the list of specfiles used to
* generate the digest. The SELABEL_OPT_DIGEST option must
* be set in selabel_open() to initiate the digest generation.
* @handle: specifies backend instance to query
- * @digest: returns a pointer to the SHA1 digest.
+ * @digest: returns a pointer to the SHA256 digest.
* @digest_len: returns length of digest in bytes.
- * @specfiles: a list of specfiles used in the SHA1 digest generation.
+ * @specfiles: a list of specfiles used in the SHA256 digest generation.
* The list is NULL terminated and will hold @num_specfiles entries.
* @num_specfiles: number of specfiles in the list.
*
diff --git a/libselinux/include/selinux/restorecon.h b/libselinux/include/selinux/restorecon.h
index 5be6542c2a91..210f65fdb709 100644
--- a/libselinux/include/selinux/restorecon.h
+++ b/libselinux/include/selinux/restorecon.h
@@ -43,8 +43,8 @@ extern int selinux_restorecon_parallel(const char *pathname,
* restorecon_flags options
*/
/*
- * Force the checking of labels even if the stored SHA1 digest
- * matches the specfiles SHA1 digest (requires CAP_SYS_ADMIN).
+ * Force the checking of labels even if the stored SHA256 digest
+ * matches the specfiles SHA256 digest (requires CAP_SYS_ADMIN).
*/
#define SELINUX_RESTORECON_IGNORE_DIGEST 0x00001
/*
diff --git a/libselinux/man/man3/selabel_digest.3 b/libselinux/man/man3/selabel_digest.3
index 56a008f00df0..5f7c42533d0e 100644
--- a/libselinux/man/man3/selabel_digest.3
+++ b/libselinux/man/man3/selabel_digest.3
@@ -20,11 +20,11 @@ selabel_digest \- Return digest of specfiles and list of files used
.BR selabel_digest ()
performs an operation on the handle
.IR hnd ,
-returning the results of the SHA1 digest pointed to by
+returning the results of the SHA256 digest pointed to by
.IR digest ,
whose length will be
.IR digest_len .
-The list of specfiles used in the SHA1 digest calculation is returned in
+The list of specfiles used in the SHA256 digest calculation is returned in
.I specfiles
with the number of entries in
.IR num_specfiles .
diff --git a/libselinux/man/man3/selabel_open.3 b/libselinux/man/man3/selabel_open.3
index 0e03e1be111e..14ab888d2e03 100644
--- a/libselinux/man/man3/selabel_open.3
+++ b/libselinux/man/man3/selabel_open.3
@@ -69,7 +69,7 @@ is used; a custom validation function can be provided via
Note that an invalid context may not be treated as an error unless it is actually encountered during a lookup operation.
.TP
.B SELABEL_OPT_DIGEST
-A non-null value for this option enables the generation of an SHA1 digest of
+A non-null value for this option enables the generation of an SHA256 digest of
the spec files loaded as described in
.BR selabel_digest (3)
.
diff --git a/libselinux/man/man3/selinux_restorecon.3 b/libselinux/man/man3/selinux_restorecon.3
index 218aaf6d2ae5..5f6d4b386429 100644
--- a/libselinux/man/man3/selinux_restorecon.3
+++ b/libselinux/man/man3/selinux_restorecon.3
@@ -36,7 +36,7 @@ If this is a directory and the
.B SELINUX_RESTORECON_RECURSE
has been set (for descending through directories), then
.BR selinux_restorecon ()
-will write an SHA1 digest of specfile entries calculated by
+will write an SHA256 digest of specfile entries calculated by
.BR selabel_get_digests_all_partial_matches (3)
to an extended attribute of
.IR security.sehash
@@ -55,7 +55,7 @@ will take place.
.br
The
.IR restorecon_flags
-that can be used to manage the usage of the SHA1 digest are:
+that can be used to manage the usage of the SHA256 digest are:
.RS
.B SELINUX_RESTORECON_SKIP_DIGEST
.br
@@ -73,8 +73,8 @@ Do not check or update any extended attribute
entries.
.sp
.B SELINUX_RESTORECON_IGNORE_DIGEST
-force the checking of labels even if the stored SHA1 digest matches the
-specfile entries SHA1 digest. The specfile entries digest will be written to the
+force the checking of labels even if the stored SHA256 digest matches the
+specfile entries SHA256 digest. The specfile entries digest will be written to the
.IR security.sehash
extended attribute once relabeling has been completed successfully provided the
.B SELINUX_RESTORECON_NOCHANGE
@@ -95,7 +95,7 @@ default specfile context.
.sp
.B SELINUX_RESTORECON_RECURSE
change file and directory labels recursively (descend directories)
-and if successful write an SHA1 digest of the specfile entries to an
+and if successful write an SHA256 digest of the specfile entries to an
extended attribute as described in the
.B NOTES
section.
@@ -179,12 +179,12 @@ for fetching the ignored (skipped) error count after
or
.BR selinux_restorecon_parallel (3)
completes with success. In case any errors were skipped during the file tree
-walk, the specfile entries SHA1 digest will not have been written to the
+walk, the specfile entries SHA256 digest will not have been written to the
.IR security.sehash
extended attribute.
.RE
.sp
-The behavior regarding the checking and updating of the SHA1 digest described
+The behavior regarding the checking and updating of the SHA256 digest described
above is the default behavior. It is possible to change this by first calling
.BR selabel_open (3)
and not enabling the
@@ -247,7 +247,7 @@ To improve performance when relabeling file systems recursively (e.g. the
.B SELINUX_RESTORECON_RECURSE
flag is set)
.BR selinux_restorecon ()
-will write a calculated SHA1 digest of the specfile entries returned by
+will write a calculated SHA256 digest of the specfile entries returned by
.BR selabel_get_digests_all_partial_matches (3)
to an extended attribute named
.IR security.sehash
@@ -269,7 +269,7 @@ Should any of the specfile entries have changed, then when
.BR selinux_restorecon ()
is run again with the
.B SELINUX_RESTORECON_RECURSE
-flag set, new SHA1 digests will be calculated and all files automatically
+flag set, new SHA256 digests will be calculated and all files automatically
relabeled depending on the settings of the
.B SELINUX_RESTORECON_SET_SPECFILE_CTX
flag (provided
diff --git a/libselinux/man/man3/selinux_restorecon_xattr.3 b/libselinux/man/man3/selinux_restorecon_xattr.3
index c56326814b94..098c840fc59b 100644
--- a/libselinux/man/man3/selinux_restorecon_xattr.3
+++ b/libselinux/man/man3/selinux_restorecon_xattr.3
@@ -119,7 +119,7 @@ By default
.BR selinux_restorecon_xattr (3)
will use the default set of specfiles described in
.BR files_contexts (5)
-to calculate the SHA1 digests to be used for comparison.
+to calculate the SHA256 digests to be used for comparison.
To change this default behavior
.BR selabel_open (3)
must be called specifying the required
diff --git a/libselinux/src/Makefile b/libselinux/src/Makefile
index 41cfbdca490c..658a4c3d80e0 100644
--- a/libselinux/src/Makefile
+++ b/libselinux/src/Makefile
@@ -130,7 +130,7 @@ DISABLE_FLAGS+= -DNO_MEDIA_BACKEND -DNO_DB_BACKEND -DNO_X_BACKEND \
-DBUILD_HOST
SRCS= callbacks.c freecon.c label.c label_file.c \
label_backends_android.c regex.c label_support.c \
- matchpathcon.c setrans_client.c sha1.c booleans.c
+ matchpathcon.c setrans_client.c sha256.c booleans.c
LABEL_BACKEND_ANDROID=y
endif
diff --git a/libselinux/src/label_file.c b/libselinux/src/label_file.c
index 189a5ed26eb7..312bb584d6b4 100644
--- a/libselinux/src/label_file.c
+++ b/libselinux/src/label_file.c
@@ -1780,7 +1780,7 @@ static struct lookup_result *lookup_common(struct selabel_handle *rec,
/*
* Returns true if the digest of all partial matched contexts is the same as
- * the one saved by setxattr, otherwise returns false. The length of the SHA1
+ * the one saved by setxattr, otherwise returns false. The length of the SHA256
* digest will always be returned. The caller must free any returned digests.
*/
static bool get_digests_all_partial_matches(struct selabel_handle *rec,
@@ -1789,39 +1789,39 @@ static bool get_digests_all_partial_matches(struct selabel_handle *rec,
uint8_t **xattr_digest,
size_t *digest_len)
{
- uint8_t read_digest[SHA1_HASH_SIZE];
+ uint8_t read_digest[SHA256_HASH_SIZE];
ssize_t read_size = getxattr(pathname, RESTORECON_PARTIAL_MATCH_DIGEST,
- read_digest, SHA1_HASH_SIZE
+ read_digest, SHA256_HASH_SIZE
#ifdef __APPLE__
, 0, 0
#endif /* __APPLE __ */
);
- uint8_t hash_digest[SHA1_HASH_SIZE];
+ uint8_t hash_digest[SHA256_HASH_SIZE];
bool status = selabel_hash_all_partial_matches(rec, pathname,
hash_digest);
*xattr_digest = NULL;
*calculated_digest = NULL;
- *digest_len = SHA1_HASH_SIZE;
+ *digest_len = SHA256_HASH_SIZE;
- if (read_size == SHA1_HASH_SIZE) {
- *xattr_digest = calloc(1, SHA1_HASH_SIZE + 1);
+ if (read_size == SHA256_HASH_SIZE) {
+ *xattr_digest = calloc(1, SHA256_HASH_SIZE + 1);
if (!*xattr_digest)
goto oom;
- memcpy(*xattr_digest, read_digest, SHA1_HASH_SIZE);
+ memcpy(*xattr_digest, read_digest, SHA256_HASH_SIZE);
}
if (status) {
- *calculated_digest = calloc(1, SHA1_HASH_SIZE + 1);
+ *calculated_digest = calloc(1, SHA256_HASH_SIZE + 1);
if (!*calculated_digest)
goto oom;
- memcpy(*calculated_digest, hash_digest, SHA1_HASH_SIZE);
+ memcpy(*calculated_digest, hash_digest, SHA256_HASH_SIZE);
}
- if (status && read_size == SHA1_HASH_SIZE &&
- memcmp(read_digest, hash_digest, SHA1_HASH_SIZE) == 0)
+ if (status && read_size == SHA256_HASH_SIZE &&
+ memcmp(read_digest, hash_digest, SHA256_HASH_SIZE) == 0)
return true;
return false;
@@ -1840,22 +1840,22 @@ static bool hash_all_partial_matches(struct selabel_handle *rec, const char *key
return false;
}
- Sha1Context context;
- Sha1Initialise(&context);
+ Sha256Context context;
+ Sha256Initialise(&context);
for (const struct lookup_result *m = matches; m; m = m->next) {
const char* regex_str = m->regex_str;
uint8_t file_kind = m->file_kind;
const char* ctx_raw = m->lr->ctx_raw;
- Sha1Update(&context, regex_str, strlen(regex_str) + 1);
- Sha1Update(&context, &file_kind, sizeof(file_kind));
- Sha1Update(&context, ctx_raw, strlen(ctx_raw) + 1);
+ Sha256Update(&context, regex_str, strlen(regex_str) + 1);
+ Sha256Update(&context, &file_kind, sizeof(file_kind));
+ Sha256Update(&context, ctx_raw, strlen(ctx_raw) + 1);
}
- SHA1_HASH sha1_hash;
- Sha1Finalise(&context, &sha1_hash);
- memcpy(digest, sha1_hash.bytes, SHA1_HASH_SIZE);
+ SHA256_HASH sha256_hash;
+ Sha256Finalise(&context, &sha256_hash);
+ memcpy(digest, sha256_hash.bytes, SHA256_HASH_SIZE);
free_lookup_result(matches);
return true;
diff --git a/libselinux/src/label_internal.h b/libselinux/src/label_internal.h
index 743dbf9472cf..4180df92f405 100644
--- a/libselinux/src/label_internal.h
+++ b/libselinux/src/label_internal.h
@@ -13,7 +13,7 @@
#include <stdio.h>
#include <selinux/selinux.h>
#include <selinux/label.h>
-#include "sha1.h"
+#include "sha256.h"
#if defined(ANDROID) || defined(__APPLE__)
// Android and Mac do not have fgets_unlocked()
@@ -47,15 +47,15 @@ int selabel_service_init(struct selabel_handle *rec,
*/
/*
- * Calculate an SHA1 hash of all the files used to build the specs.
+ * Calculate an SHA256 hash of all the files used to build the specs.
* The hash value is held in rec->digest if SELABEL_OPT_DIGEST set. To
* calculate the hash the hashbuf will hold a concatenation of all the files
* used. This is released once the value has been calculated.
*/
-#define DIGEST_SPECFILE_SIZE SHA1_HASH_SIZE
+#define DIGEST_SPECFILE_SIZE SHA256_HASH_SIZE
#define DIGEST_FILES_MAX 8
struct selabel_digest {
- unsigned char *digest; /* SHA1 digest of specfiles */
+ unsigned char *digest; /* SHA256 digest of specfiles */
unsigned char *hashbuf; /* buffer to hold specfiles */
size_t hashbuf_size; /* buffer size */
size_t specfile_cnt; /* how many specfiles processed */
@@ -111,7 +111,7 @@ struct selabel_handle {
*/
char *spec_file;
- /* ptr to SHA1 hash information if SELABEL_OPT_DIGEST set */
+ /* ptr to SHA256 hash information if SELABEL_OPT_DIGEST set */
struct selabel_digest *digest;
};
diff --git a/libselinux/src/label_support.c b/libselinux/src/label_support.c
index 978ba828c159..daba26941ae7 100644
--- a/libselinux/src/label_support.c
+++ b/libselinux/src/label_support.c
@@ -120,7 +120,7 @@ int read_spec_entries(char *line_buf, size_t nread, const char **errbuf, int nu
/* Once all the specfiles are in the hash_buf, generate the hash. */
void digest_gen_hash(struct selabel_digest *digest)
{
- Sha1Context context;
+ Sha256Context context;
size_t remaining_size;
const unsigned char *ptr;
@@ -128,19 +128,19 @@ void digest_gen_hash(struct selabel_digest *digest)
if (!digest)
return;
- Sha1Initialise(&context);
+ Sha256Initialise(&context);
/* Process in blocks of UINT32_MAX bytes */
remaining_size = digest->hashbuf_size;
ptr = digest->hashbuf;
while (remaining_size > UINT32_MAX) {
- Sha1Update(&context, ptr, UINT32_MAX);
+ Sha256Update(&context, ptr, UINT32_MAX);
remaining_size -= UINT32_MAX;
ptr += UINT32_MAX;
}
- Sha1Update(&context, ptr, remaining_size);
+ Sha256Update(&context, ptr, remaining_size);
- Sha1Finalise(&context, (SHA1_HASH *)digest->digest);
+ Sha256Finalise(&context, (SHA256_HASH *)digest->digest);
free(digest->hashbuf);
digest->hashbuf = NULL;
}
diff --git a/libselinux/src/selinux_restorecon.c b/libselinux/src/selinux_restorecon.c
index bc6ed935a4ad..93bd7779249b 100644
--- a/libselinux/src/selinux_restorecon.c
+++ b/libselinux/src/selinux_restorecon.c
@@ -37,7 +37,7 @@
#include "callbacks.h"
#include "selinux_internal.h"
#include "label_file.h"
-#include "sha1.h"
+#include "sha256.h"
#define STAR_COUNT 1024
@@ -306,7 +306,7 @@ static uint64_t exclude_non_seclabel_mounts(void)
static int add_xattr_entry(const char *directory, bool delete_nonmatch,
bool delete_all)
{
- char *sha1_buf = NULL;
+ char *sha256_buf = NULL;
size_t i, digest_len = 0;
int rc;
enum digest_result digest_result;
@@ -330,15 +330,15 @@ static int add_xattr_entry(const char *directory, bool delete_nonmatch,
}
/* Convert entry to a hex encoded string. */
- sha1_buf = malloc(digest_len * 2 + 1);
- if (!sha1_buf) {
+ sha256_buf = malloc(digest_len * 2 + 1);
+ if (!sha256_buf) {
free(xattr_digest);
free(calculated_digest);
goto oom;
}
for (i = 0; i < digest_len; i++)
- sprintf((&sha1_buf[i * 2]), "%02x", xattr_digest[i]);
+ sprintf((&sha256_buf[i * 2]), "%02x", xattr_digest[i]);
digest_result = match ? MATCH : NOMATCH;
@@ -358,7 +358,7 @@ static int add_xattr_entry(const char *directory, bool delete_nonmatch,
/* Now add entries to link list. */
new_entry = malloc(sizeof(struct dir_xattr));
if (!new_entry) {
- free(sha1_buf);
+ free(sha256_buf);
goto oom;
}
new_entry->next = NULL;
@@ -366,15 +366,15 @@ static int add_xattr_entry(const char *directory, bool delete_nonmatch,
new_entry->directory = strdup(directory);
if (!new_entry->directory) {
free(new_entry);
- free(sha1_buf);
+ free(sha256_buf);
goto oom;
}
- new_entry->digest = strdup(sha1_buf);
+ new_entry->digest = strdup(sha256_buf);
if (!new_entry->digest) {
free(new_entry->directory);
free(new_entry);
- free(sha1_buf);
+ free(sha256_buf);
goto oom;
}
@@ -388,7 +388,7 @@ static int add_xattr_entry(const char *directory, bool delete_nonmatch,
dir_xattr_last = new_entry;
}
- free(sha1_buf);
+ free(sha256_buf);
return 0;
oom:
@@ -778,7 +778,7 @@ err:
struct dir_hash_node {
char *path;
- uint8_t digest[SHA1_HASH_SIZE];
+ uint8_t digest[SHA256_HASH_SIZE];
struct dir_hash_node *next;
};
/*
@@ -1284,7 +1284,7 @@ static int selinux_restorecon_common(const char *pathname_orig,
if (setxattr(current->path,
RESTORECON_PARTIAL_MATCH_DIGEST,
current->digest,
- SHA1_HASH_SIZE, 0) < 0) {
+ SHA256_HASH_SIZE, 0) < 0) {
selinux_log(SELINUX_ERROR,
"setxattr failed: %s: %m\n",
current->path);
diff --git a/libselinux/src/sha1.c b/libselinux/src/sha1.c
deleted file mode 100644
index 452b0cc2ad5a..000000000000
--- a/libselinux/src/sha1.c
+++ /dev/null
@@ -1,223 +0,0 @@
-///////////////////////////////////////////////////////////////////////////////////////////////////////////////////////
-// LibSha1
-//
-// Implementation of SHA1 hash function.
-// Original author: Steve Reid <sreid@sea-to-sky.net>
-// Contributions by: James H. Brown <jbrown@burgoyne.com>, Saul Kravitz <Saul.Kravitz@celera.com>,
-// and Ralph Giles <giles@ghostscript.com>
-// Modified by WaterJuice retaining Public Domain license.
-//
-// This is free and unencumbered software released into the public domain - June 2013 waterjuice.org
-// Modified to:
-// - stop symbols being exported for libselinux shared library - October 2015
-// Richard Haines <richard_c_haines@btinternet.com>
-// - Not cast the workspace from a byte array to a CHAR64LONG16 due to alignment issues.
-// Fixes:
-// sha1.c:73:33: error: cast from 'uint8_t *' (aka 'unsigned char *') to 'CHAR64LONG16 *' increases required alignment from 1 to 4 [-Werror,-Wcast-align]
-// CHAR64LONG16* block = (CHAR64LONG16*) workspace;
-// William Roberts <william.c.roberts@intel.com>
-// - Silence clang's -Wextra-semi-stmt warning - July 2021, Nicolas Iooss <nicolas.iooss@m4x.org>
-///////////////////////////////////////////////////////////////////////////////////////////////////////////////////////
-
-///////////////////////////////////////////////////////////////////////////////////////////////////////////////////////
-// IMPORTS
-///////////////////////////////////////////////////////////////////////////////////////////////////////////////////////
-
-#include "sha1.h"
-#include <memory.h>
-
-#include "selinux_internal.h"
-
-///////////////////////////////////////////////////////////////////////////////////////////////////////////////////////
-// TYPES
-///////////////////////////////////////////////////////////////////////////////////////////////////////////////////////
-
-typedef union
-{
- uint8_t c [64];
- uint32_t l [16];
-} CHAR64LONG16;
-
-///////////////////////////////////////////////////////////////////////////////////////////////////////////////////////
-// INTERNAL FUNCTIONS
-///////////////////////////////////////////////////////////////////////////////////////////////////////////////////////
-
-#define rol(value, bits) (((value) << (bits)) | ((value) >> (32 - (bits))))
-
-// blk0() and blk() perform the initial expand.
-#define blk0(i) (block->l[i] = (rol(block->l[i],24)&0xFF00FF00) \
- |(rol(block->l[i],8)&0x00FF00FF))
-
-#define blk(i) (block->l[i&15] = rol(block->l[(i+13)&15]^block->l[(i+8)&15] \
- ^block->l[(i+2)&15]^block->l[i&15],1))
-
-// (R0+R1), R2, R3, R4 are the different operations used in SHA1
-#define R0(v,w,x,y,z,i) do { z += ((w&(x^y))^y) + blk0(i)+ 0x5A827999 + rol(v,5); w=rol(w,30); } while (0)
-#define R1(v,w,x,y,z,i) do { z += ((w&(x^y))^y) + blk(i) + 0x5A827999 + rol(v,5); w=rol(w,30); } while (0)
-#define R2(v,w,x,y,z,i) do { z += (w^x^y) + blk(i) + 0x6ED9EBA1 + rol(v,5); w=rol(w,30); } while (0)
-#define R3(v,w,x,y,z,i) do { z += (((w|x)&y)|(w&x)) + blk(i) + 0x8F1BBCDC + rol(v,5); w=rol(w,30); } while (0)
-#define R4(v,w,x,y,z,i) do { z += (w^x^y) + blk(i) + 0xCA62C1D6 + rol(v,5); w=rol(w,30); } while (0)
-
-
-///////////////////////////////////////////////////////////////////////////////////////////////////////////////////////
-// TransformFunction
-//
-// Hash a single 512-bit block. This is the core of the algorithm
-///////////////////////////////////////////////////////////////////////////////////////////////////////////////////////
-ignore_unsigned_overflow_
-static
-void
- TransformFunction
- (
- uint32_t state[5],
- const uint8_t buffer[64]
- )
-{
- uint32_t a;
- uint32_t b;
- uint32_t c;
- uint32_t d;
- uint32_t e;
- CHAR64LONG16 workspace;
- CHAR64LONG16* block = &workspace;
-
- memcpy(block, buffer, 64);
-
- // Copy context->state[] to working vars
- a = state[0];
- b = state[1];
- c = state[2];
- d = state[3];
- e = state[4];
-
- // 4 rounds of 20 operations each. Loop unrolled.
- R0(a,b,c,d,e, 0); R0(e,a,b,c,d, 1); R0(d,e,a,b,c, 2); R0(c,d,e,a,b, 3);
- R0(b,c,d,e,a, 4); R0(a,b,c,d,e, 5); R0(e,a,b,c,d, 6); R0(d,e,a,b,c, 7);
- R0(c,d,e,a,b, 8); R0(b,c,d,e,a, 9); R0(a,b,c,d,e,10); R0(e,a,b,c,d,11);
- R0(d,e,a,b,c,12); R0(c,d,e,a,b,13); R0(b,c,d,e,a,14); R0(a,b,c,d,e,15);
- R1(e,a,b,c,d,16); R1(d,e,a,b,c,17); R1(c,d,e,a,b,18); R1(b,c,d,e,a,19);
- R2(a,b,c,d,e,20); R2(e,a,b,c,d,21); R2(d,e,a,b,c,22); R2(c,d,e,a,b,23);
- R2(b,c,d,e,a,24); R2(a,b,c,d,e,25); R2(e,a,b,c,d,26); R2(d,e,a,b,c,27);
- R2(c,d,e,a,b,28); R2(b,c,d,e,a,29); R2(a,b,c,d,e,30); R2(e,a,b,c,d,31);
- R2(d,e,a,b,c,32); R2(c,d,e,a,b,33); R2(b,c,d,e,a,34); R2(a,b,c,d,e,35);
- R2(e,a,b,c,d,36); R2(d,e,a,b,c,37); R2(c,d,e,a,b,38); R2(b,c,d,e,a,39);
- R3(a,b,c,d,e,40); R3(e,a,b,c,d,41); R3(d,e,a,b,c,42); R3(c,d,e,a,b,43);
- R3(b,c,d,e,a,44); R3(a,b,c,d,e,45); R3(e,a,b,c,d,46); R3(d,e,a,b,c,47);
- R3(c,d,e,a,b,48); R3(b,c,d,e,a,49); R3(a,b,c,d,e,50); R3(e,a,b,c,d,51);
- R3(d,e,a,b,c,52); R3(c,d,e,a,b,53); R3(b,c,d,e,a,54); R3(a,b,c,d,e,55);
- R3(e,a,b,c,d,56); R3(d,e,a,b,c,57); R3(c,d,e,a,b,58); R3(b,c,d,e,a,59);
- R4(a,b,c,d,e,60); R4(e,a,b,c,d,61); R4(d,e,a,b,c,62); R4(c,d,e,a,b,63);
- R4(b,c,d,e,a,64); R4(a,b,c,d,e,65); R4(e,a,b,c,d,66); R4(d,e,a,b,c,67);
- R4(c,d,e,a,b,68); R4(b,c,d,e,a,69); R4(a,b,c,d,e,70); R4(e,a,b,c,d,71);
- R4(d,e,a,b,c,72); R4(c,d,e,a,b,73); R4(b,c,d,e,a,74); R4(a,b,c,d,e,75);
- R4(e,a,b,c,d,76); R4(d,e,a,b,c,77); R4(c,d,e,a,b,78); R4(b,c,d,e,a,79);
-
- // Add the working vars back into context.state[]
- state[0] += a;
- state[1] += b;
- state[2] += c;
- state[3] += d;
- state[4] += e;
-}
-
-///////////////////////////////////////////////////////////////////////////////////////////////////////////////////////
-// PUBLIC FUNCTIONS
-///////////////////////////////////////////////////////////////////////////////////////////////////////////////////////
-
-///////////////////////////////////////////////////////////////////////////////////////////////////////////////////////
-// Sha1Initialise
-//
-// Initialises an SHA1 Context. Use this to initialise/reset a context.
-///////////////////////////////////////////////////////////////////////////////////////////////////////////////////////
-void
- Sha1Initialise
- (
- Sha1Context* Context
- )
-{
- // SHA1 initialization constants
- Context->State[0] = 0x67452301;
- Context->State[1] = 0xEFCDAB89;
- Context->State[2] = 0x98BADCFE;
- Context->State[3] = 0x10325476;
- Context->State[4] = 0xC3D2E1F0;
- Context->Count[0] = 0;
- Context->Count[1] = 0;
-}
-
-///////////////////////////////////////////////////////////////////////////////////////////////////////////////////////
-// Sha1Update
-//
-// Adds data to the SHA1 context. This will process the data and update the internal state of the context. Keep on
-// calling this function until all the data has been added. Then call Sha1Finalise to calculate the hash.
-///////////////////////////////////////////////////////////////////////////////////////////////////////////////////////
-void
- Sha1Update
- (
- Sha1Context* Context,
- const void* Buffer,
- uint32_t BufferSize
- )
-{
- uint32_t i;
- uint32_t j;
-
- j = (Context->Count[0] >> 3) & 63;
- if ((Context->Count[0] += BufferSize << 3) < (BufferSize << 3))
- {
- Context->Count[1]++;
- }
-
- Context->Count[1] += (BufferSize >> 29);
- if ((j + BufferSize) > 63)
- {
- i = 64 - j;
- memcpy(&Context->Buffer[j], Buffer, i);
- TransformFunction(Context->State, Context->Buffer);
- for (; i + 63 < BufferSize; i += 64)
- {
- TransformFunction(Context->State, (const uint8_t*)Buffer + i);
- }
- j = 0;
- }
- else
- {
- i = 0;
- }
-
- memcpy(&Context->Buffer[j], &((const uint8_t*)Buffer)[i], BufferSize - i);
-}
-
-///////////////////////////////////////////////////////////////////////////////////////////////////////////////////////
-// Sha1Finalise
-//
-// Performs the final calculation of the hash and returns the digest (20 byte buffer containing 160bit hash). After
-// calling this, Sha1Initialised must be used to reuse the context.
-///////////////////////////////////////////////////////////////////////////////////////////////////////////////////////
-void
- Sha1Finalise
- (
- Sha1Context* Context,
- SHA1_HASH* Digest
- )
-{
- uint32_t i;
- uint8_t finalcount[8];
-
- for (i = 0; i < 8; i++)
- {
- finalcount[i] = (unsigned char)((Context->Count[(i >= 4 ? 0 : 1)]
- >> ((3-(i & 3)) * 8) ) & 255); // Endian independent
- }
- Sha1Update(Context, (const uint8_t*)"\x80", 1);
- while ((Context->Count[0] & 504) != 448)
- {
- Sha1Update(Context, (const uint8_t*)"\0", 1);
- }
-
- Sha1Update(Context, finalcount, 8); // Should cause a Sha1TransformFunction()
- for (i = 0; i < SHA1_HASH_SIZE; i++)
- {
- Digest->bytes[i] = (uint8_t)((Context->State[i>>2] >> ((3-(i & 3)) * 8) ) & 255);
- }
-}
diff --git a/libselinux/src/sha1.h b/libselinux/src/sha1.h
deleted file mode 100644
index f83a6e7ed7ba..000000000000
--- a/libselinux/src/sha1.h
+++ /dev/null
@@ -1,85 +0,0 @@
-///////////////////////////////////////////////////////////////////////////////////////////////////////////////////////
-// LibSha1
-//
-// Implementation of SHA1 hash function.
-// Original author: Steve Reid <sreid@sea-to-sky.net>
-// Contributions by: James H. Brown <jbrown@burgoyne.com>, Saul Kravitz <Saul.Kravitz@celera.com>,
-// and Ralph Giles <giles@ghostscript.com>
-// Modified by WaterJuice retaining Public Domain license.
-//
-// This is free and unencumbered software released into the public domain - June 2013 waterjuice.org
-///////////////////////////////////////////////////////////////////////////////////////////////////////////////////////
-
-#ifndef _sha1_h_
-#define _sha1_h_
-
-///////////////////////////////////////////////////////////////////////////////////////////////////////////////////////
-// IMPORTS
-///////////////////////////////////////////////////////////////////////////////////////////////////////////////////////
-
-#include <stdint.h>
-#include <stdio.h>
-
-///////////////////////////////////////////////////////////////////////////////////////////////////////////////////////
-// TYPES
-///////////////////////////////////////////////////////////////////////////////////////////////////////////////////////
-
-// Sha1Context - This must be initialised using Sha1Initialised. Do not modify the contents of this structure directly.
-typedef struct
-{
- uint32_t State[5];
- uint32_t Count[2];
- uint8_t Buffer[64];
-} Sha1Context;
-
-#define SHA1_HASH_SIZE ( 160 / 8 )
-
-typedef struct
-{
- uint8_t bytes [SHA1_HASH_SIZE];
-} SHA1_HASH;
-
-///////////////////////////////////////////////////////////////////////////////////////////////////////////////////////
-// PUBLIC FUNCTIONS
-///////////////////////////////////////////////////////////////////////////////////////////////////////////////////////
-
-///////////////////////////////////////////////////////////////////////////////////////////////////////////////////////
-// Sha1Initialise
-//
-// Initialises an SHA1 Context. Use this to initialise/reset a context.
-///////////////////////////////////////////////////////////////////////////////////////////////////////////////////////
-void
- Sha1Initialise
- (
- Sha1Context* Context
- );
-
-///////////////////////////////////////////////////////////////////////////////////////////////////////////////////////
-// Sha1Update
-//
-// Adds data to the SHA1 context. This will process the data and update the internal state of the context. Keep on
-// calling this function until all the data has been added. Then call Sha1Finalise to calculate the hash.
-///////////////////////////////////////////////////////////////////////////////////////////////////////////////////////
-void
- Sha1Update
- (
- Sha1Context* Context,
- const void* Buffer,
- uint32_t BufferSize
- );
-
-///////////////////////////////////////////////////////////////////////////////////////////////////////////////////////
-// Sha1Finalise
-//
-// Performs the final calculation of the hash and returns the digest (20 byte buffer containing 160bit hash). After
-// calling this, Sha1Initialised must be used to reuse the context.
-///////////////////////////////////////////////////////////////////////////////////////////////////////////////////////
-void
- Sha1Finalise
- (
- Sha1Context* Context,
- SHA1_HASH* Digest
- );
-
-///////////////////////////////////////////////////////////////////////////////////////////////////////////////////////
-#endif //_sha1_h_
diff --git a/libselinux/src/sha256.c b/libselinux/src/sha256.c
new file mode 100644
index 000000000000..fe2aeef07f53
--- /dev/null
+++ b/libselinux/src/sha256.c
@@ -0,0 +1,294 @@
+////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////
+// WjCryptLib_Sha256
+//
+// Implementation of SHA256 hash function.
+// Original author: Tom St Denis, tomstdenis@gmail.com, http://libtom.org
+// Modified by WaterJuice retaining Public Domain license.
+//
+// This is free and unencumbered software released into the public domain - June 2013 waterjuice.org
+////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////
+
+////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////
+// IMPORTS
+////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////
+
+#include "sha256.h"
+#include <memory.h>
+
+////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////
+// MACROS
+////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////
+
+#define ror(value, bits) (((value) >> (bits)) | ((value) << (32 - (bits))))
+
+#define MIN(x, y) ( ((x)<(y))?(x):(y) )
+
+#define STORE32H(x, y) \
+ { (y)[0] = (uint8_t)(((x)>>24)&255); (y)[1] = (uint8_t)(((x)>>16)&255); \
+ (y)[2] = (uint8_t)(((x)>>8)&255); (y)[3] = (uint8_t)((x)&255); }
+
+#define LOAD32H(x, y) \
+ { x = ((uint32_t)((y)[0] & 255)<<24) | \
+ ((uint32_t)((y)[1] & 255)<<16) | \
+ ((uint32_t)((y)[2] & 255)<<8) | \
+ ((uint32_t)((y)[3] & 255)); }
+
+#define STORE64H(x, y) \
+ { (y)[0] = (uint8_t)(((x)>>56)&255); (y)[1] = (uint8_t)(((x)>>48)&255); \
+ (y)[2] = (uint8_t)(((x)>>40)&255); (y)[3] = (uint8_t)(((x)>>32)&255); \
+ (y)[4] = (uint8_t)(((x)>>24)&255); (y)[5] = (uint8_t)(((x)>>16)&255); \
+ (y)[6] = (uint8_t)(((x)>>8)&255); (y)[7] = (uint8_t)((x)&255); }
+
+////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////
+// CONSTANTS
+////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////
+
+// The K array
+static const uint32_t K[64] = {
+ 0x428a2f98UL, 0x71374491UL, 0xb5c0fbcfUL, 0xe9b5dba5UL, 0x3956c25bUL,
+ 0x59f111f1UL, 0x923f82a4UL, 0xab1c5ed5UL, 0xd807aa98UL, 0x12835b01UL,
+ 0x243185beUL, 0x550c7dc3UL, 0x72be5d74UL, 0x80deb1feUL, 0x9bdc06a7UL,
+ 0xc19bf174UL, 0xe49b69c1UL, 0xefbe4786UL, 0x0fc19dc6UL, 0x240ca1ccUL,
+ 0x2de92c6fUL, 0x4a7484aaUL, 0x5cb0a9dcUL, 0x76f988daUL, 0x983e5152UL,
+ 0xa831c66dUL, 0xb00327c8UL, 0xbf597fc7UL, 0xc6e00bf3UL, 0xd5a79147UL,
+ 0x06ca6351UL, 0x14292967UL, 0x27b70a85UL, 0x2e1b2138UL, 0x4d2c6dfcUL,
+ 0x53380d13UL, 0x650a7354UL, 0x766a0abbUL, 0x81c2c92eUL, 0x92722c85UL,
+ 0xa2bfe8a1UL, 0xa81a664bUL, 0xc24b8b70UL, 0xc76c51a3UL, 0xd192e819UL,
+ 0xd6990624UL, 0xf40e3585UL, 0x106aa070UL, 0x19a4c116UL, 0x1e376c08UL,
+ 0x2748774cUL, 0x34b0bcb5UL, 0x391c0cb3UL, 0x4ed8aa4aUL, 0x5b9cca4fUL,
+ 0x682e6ff3UL, 0x748f82eeUL, 0x78a5636fUL, 0x84c87814UL, 0x8cc70208UL,
+ 0x90befffaUL, 0xa4506cebUL, 0xbef9a3f7UL, 0xc67178f2UL
+};
+
+#define BLOCK_SIZE 64
+
+////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////
+// INTERNAL FUNCTIONS
+////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////
+
+// Various logical functions
+#define Ch( x, y, z ) (z ^ (x & (y ^ z)))
+#define Maj( x, y, z ) (((x | y) & z) | (x & y))
+#define S( x, n ) ror((x),(n))
+#define R( x, n ) (((x)&0xFFFFFFFFUL)>>(n))
+#define Sigma0( x ) (S(x, 2) ^ S(x, 13) ^ S(x, 22))
+#define Sigma1( x ) (S(x, 6) ^ S(x, 11) ^ S(x, 25))
+#define Gamma0( x ) (S(x, 7) ^ S(x, 18) ^ R(x, 3))
+#define Gamma1( x ) (S(x, 17) ^ S(x, 19) ^ R(x, 10))
+
+#define Sha256Round( a, b, c, d, e, f, g, h, i ) \
+ t0 = h + Sigma1(e) + Ch(e, f, g) + K[i] + W[i]; \
+ t1 = Sigma0(a) + Maj(a, b, c); \
+ d += t0; \
+ h = t0 + t1;
+
+////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////
+// TransformFunction
+//
+// Compress 512-bits
+////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////
+static
+void
+ TransformFunction
+ (
+ Sha256Context* Context,
+ uint8_t const* Buffer
+ )
+{
+ uint32_t S[8];
+ uint32_t W[64];
+ uint32_t t0;
+ uint32_t t1;
+ uint32_t t;
+ int i;
+
+ // Copy state into S
+ for( i=0; i<8; i++ )
+ {
+ S[i] = Context->state[i];
+ }
+
+ // Copy the state into 512-bits into W[0..15]
+ for( i=0; i<16; i++ )
+ {
+ LOAD32H( W[i], Buffer + (4*i) );
+ }
+
+ // Fill W[16..63]
+ for( i=16; i<64; i++ )
+ {
+ W[i] = Gamma1( W[i-2]) + W[i-7] + Gamma0( W[i-15] ) + W[i-16];
+ }
+
+ // Compress
+ for( i=0; i<64; i++ )
+ {
+ Sha256Round( S[0], S[1], S[2], S[3], S[4], S[5], S[6], S[7], i );
+ t = S[7];
+ S[7] = S[6];
+ S[6] = S[5];
+ S[5] = S[4];
+ S[4] = S[3];
+ S[3] = S[2];
+ S[2] = S[1];
+ S[1] = S[0];
+ S[0] = t;
+ }
+
+ // Feedback
+ for( i=0; i<8; i++ )
+ {
+ Context->state[i] = Context->state[i] + S[i];
+ }
+}
+
+////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////
+// PUBLIC FUNCTIONS
+////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////
+
+////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////
+// Sha256Initialise
+//
+// Initialises a SHA256 Context. Use this to initialise/reset a context.
+////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////
+void
+ Sha256Initialise
+ (
+ Sha256Context* Context // [out]
+ )
+{
+ Context->curlen = 0;
+ Context->length = 0;
+ Context->state[0] = 0x6A09E667UL;
+ Context->state[1] = 0xBB67AE85UL;
+ Context->state[2] = 0x3C6EF372UL;
+ Context->state[3] = 0xA54FF53AUL;
+ Context->state[4] = 0x510E527FUL;
+ Context->state[5] = 0x9B05688CUL;
+ Context->state[6] = 0x1F83D9ABUL;
+ Context->state[7] = 0x5BE0CD19UL;
+}
+
+////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////
+// Sha256Update
+//
+// Adds data to the SHA256 context. This will process the data and update the internal state of the context. Keep on
+// calling this function until all the data has been added. Then call Sha256Finalise to calculate the hash.
+////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////
+void
+ Sha256Update
+ (
+ Sha256Context* Context, // [in out]
+ void const* Buffer, // [in]
+ uint32_t BufferSize // [in]
+ )
+{
+ uint32_t n;
+
+ if( Context->curlen > sizeof(Context->buf) )
+ {
+ return;
+ }
+
+ while( BufferSize > 0 )
+ {
+ if( Context->curlen == 0 && BufferSize >= BLOCK_SIZE )
+ {
+ TransformFunction( Context, (uint8_t*)Buffer );
+ Context->length += BLOCK_SIZE * 8;
+ Buffer = (uint8_t*)Buffer + BLOCK_SIZE;
+ BufferSize -= BLOCK_SIZE;
+ }
+ else
+ {
+ n = MIN( BufferSize, (BLOCK_SIZE - Context->curlen) );
+ memcpy( Context->buf + Context->curlen, Buffer, (size_t)n );
+ Context->curlen += n;
+ Buffer = (uint8_t*)Buffer + n;
+ BufferSize -= n;
+ if( Context->curlen == BLOCK_SIZE )
+ {
+ TransformFunction( Context, Context->buf );
+ Context->length += 8*BLOCK_SIZE;
+ Context->curlen = 0;
+ }
+ }
+ }
+}
+
+////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////
+// Sha256Finalise
+//
+// Performs the final calculation of the hash and returns the digest (32 byte buffer containing 256bit hash). After
+// calling this, Sha256Initialised must be used to reuse the context.
+////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////
+void
+ Sha256Finalise
+ (
+ Sha256Context* Context, // [in out]
+ SHA256_HASH* Digest // [out]
+ )
+{
+ int i;
+
+ if( Context->curlen >= sizeof(Context->buf) )
+ {
+ return;
+ }
+
+ // Increase the length of the message
+ Context->length += Context->curlen * 8;
+
+ // Append the '1' bit
+ Context->buf[Context->curlen++] = (uint8_t)0x80;
+
+ // if the length is currently above 56 bytes we append zeros
+ // then compress. Then we can fall back to padding zeros and length
+ // encoding like normal.
+ if( Context->curlen > 56 )
+ {
+ while( Context->curlen < 64 )
+ {
+ Context->buf[Context->curlen++] = (uint8_t)0;
+ }
+ TransformFunction(Context, Context->buf);
+ Context->curlen = 0;
+ }
+
+ // Pad up to 56 bytes of zeroes
+ while( Context->curlen < 56 )
+ {
+ Context->buf[Context->curlen++] = (uint8_t)0;
+ }
+
+ // Store length
+ STORE64H( Context->length, Context->buf+56 );
+ TransformFunction( Context, Context->buf );
+
+ // Copy output
+ for( i=0; i<8; i++ )
+ {
+ STORE32H( Context->state[i], Digest->bytes+(4*i) );
+ }
+}
+
+////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////
+// Sha256Calculate
+//
+// Combines Sha256Initialise, Sha256Update, and Sha256Finalise into one function. Calculates the SHA256 hash of the
+// buffer.
+////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////
+void
+ Sha256Calculate
+ (
+ void const* Buffer, // [in]
+ uint32_t BufferSize, // [in]
+ SHA256_HASH* Digest // [in]
+ )
+{
+ Sha256Context context;
+
+ Sha256Initialise( &context );
+ Sha256Update( &context, Buffer, BufferSize );
+ Sha256Finalise( &context, Digest );
+}
diff --git a/libselinux/src/sha256.h b/libselinux/src/sha256.h
new file mode 100644
index 000000000000..406ed869cd82
--- /dev/null
+++ b/libselinux/src/sha256.h
@@ -0,0 +1,89 @@
+////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////
+// WjCryptLib_Sha256
+//
+// Implementation of SHA256 hash function.
+// Original author: Tom St Denis, tomstdenis@gmail.com, http://libtom.org
+// Modified by WaterJuice retaining Public Domain license.
+//
+// This is free and unencumbered software released into the public domain - June 2013 waterjuice.org
+////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////
+
+#pragma once
+
+////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////
+// IMPORTS
+////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////
+
+#include <stdint.h>
+#include <stdio.h>
+
+typedef struct
+{
+ uint64_t length;
+ uint32_t state[8];
+ uint32_t curlen;
+ uint8_t buf[64];
+} Sha256Context;
+
+#define SHA256_HASH_SIZE ( 256 / 8 )
+
+typedef struct
+{
+ uint8_t bytes [SHA256_HASH_SIZE];
+} SHA256_HASH;
+
+////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////
+// PUBLIC FUNCTIONS
+////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////
+
+////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////
+// Sha256Initialise
+//
+// Initialises a SHA256 Context. Use this to initialise/reset a context.
+////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////
+void
+ Sha256Initialise
+ (
+ Sha256Context* Context // [out]
+ );
+
+////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////
+// Sha256Update
+//
+// Adds data to the SHA256 context. This will process the data and update the internal state of the context. Keep on
+// calling this function until all the data has been added. Then call Sha256Finalise to calculate the hash.
+////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////
+void
+ Sha256Update
+ (
+ Sha256Context* Context, // [in out]
+ void const* Buffer, // [in]
+ uint32_t BufferSize // [in]
+ );
+
+////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////
+// Sha256Finalise
+//
+// Performs the final calculation of the hash and returns the digest (32 byte buffer containing 256bit hash). After
+// calling this, Sha256Initialised must be used to reuse the context.
+////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////
+void
+ Sha256Finalise
+ (
+ Sha256Context* Context, // [in out]
+ SHA256_HASH* Digest // [out]
+ );
+
+////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////
+// Sha256Calculate
+//
+// Combines Sha256Initialise, Sha256Update, and Sha256Finalise into one function. Calculates the SHA256 hash of the
+// buffer.
+////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////
+void
+ Sha256Calculate
+ (
+ void const* Buffer, // [in]
+ uint32_t BufferSize, // [in]
+ SHA256_HASH* Digest // [in]
+ );
diff --git a/libselinux/utils/selabel_digest.c b/libselinux/utils/selabel_digest.c
index 47aad21ff1fb..8bcd44a1dc73 100644
--- a/libselinux/utils/selabel_digest.c
+++ b/libselinux/utils/selabel_digest.c
@@ -13,8 +13,8 @@ static __attribute__ ((__noreturn__)) void usage(const char *progname)
"Where:\n\t"
"-b The backend - \"file\", \"media\", \"x\", \"db\" or "
"\"prop\"\n\t"
- "-v Run \"cat <specfile_list> | openssl dgst -sha1 -hex\"\n\t"
- " on the list of specfiles to compare the SHA1 digests.\n\t"
+ "-v Run \"cat <specfile_list> | openssl dgst -sha256 -hex\"\n\t"
+ " on the list of specfiles to compare the SHA256 digests.\n\t"
"-B Use base specfiles only (valid for \"-b file\" only).\n\t"
"-i Do not request a digest.\n\t"
"-f Optional file containing the specs (defaults to\n\t"
@@ -61,12 +61,12 @@ int main(int argc, char **argv)
int rc, opt, validate = 0;
char *baseonly = NULL, *file = NULL, *digest = (char *)1;
char **specfiles = NULL;
- unsigned char *sha1_digest = NULL;
+ unsigned char *sha256_digest = NULL;
size_t digest_len, i, num_specfiles;
char cmd_buf[4096];
char *cmd_ptr;
- char *sha1_buf = NULL;
+ char *sha256_buf = NULL;
struct selabel_handle *hnd;
struct selinux_opt selabel_option[] = {
@@ -136,7 +136,7 @@ int main(int argc, char **argv)
return -1;
}
- rc = selabel_digest(hnd, &sha1_digest, &digest_len, &specfiles,
+ rc = selabel_digest(hnd, &sha256_digest, &digest_len, &specfiles,
&num_specfiles);
if (rc) {
@@ -151,19 +151,19 @@ int main(int argc, char **argv)
goto err;
}
- sha1_buf = malloc(digest_len * 2 + 1);
- if (!sha1_buf) {
+ sha256_buf = malloc(digest_len * 2 + 1);
+ if (!sha256_buf) {
fprintf(stderr, "Could not malloc buffer ERROR: %s\n",
strerror(errno));
rc = -1;
goto err;
}
- printf("SHA1 digest: ");
+ printf("SHA256 digest: ");
for (i = 0; i < digest_len; i++)
- sprintf(&(sha1_buf[i * 2]), "%02x", sha1_digest[i]);
+ sprintf(&(sha256_buf[i * 2]), "%02x", sha256_digest[i]);
- printf("%s\n", sha1_buf);
+ printf("%s\n", sha256_buf);
printf("calculated using the following specfile(s):\n");
if (specfiles) {
@@ -198,19 +198,19 @@ int main(int argc, char **argv)
}
if (validate) {
- ret = snprintf(cmd_ptr, cmd_rem, "| /usr/bin/openssl dgst -sha1 -hex");
+ ret = snprintf(cmd_ptr, cmd_rem, "| /usr/bin/openssl dgst -sha256 -hex");
if (ret < 0 || (size_t)ret >= cmd_rem) {
fprintf(stderr, "Could not format validate command\n");
rc = -1;
goto err;
}
- rc = run_check_digest(cmd_buf, sha1_buf, digest_len);
+ rc = run_check_digest(cmd_buf, sha256_buf, digest_len);
}
}
err:
- free(sha1_buf);
+ free(sha256_buf);
selabel_close(hnd);
return rc;
}
diff --git a/libselinux/utils/selabel_get_digests_all_partial_matches.c b/libselinux/utils/selabel_get_digests_all_partial_matches.c
index e2733b4195ff..98e533dc2692 100644
--- a/libselinux/utils/selabel_get_digests_all_partial_matches.c
+++ b/libselinux/utils/selabel_get_digests_all_partial_matches.c
@@ -16,8 +16,8 @@ static __attribute__ ((__noreturn__)) void usage(const char *progname)
"-v Validate file_contxts entries against loaded policy.\n\t"
"-r Recursively descend directories.\n\t"
"-f Optional file_contexts file (defaults to current policy).\n\t"
- "path Path to check current SHA1 digest against file_contexts entries.\n\n"
- "This will check the directory selinux.sehash SHA1 digest for "
+ "path Path to check current SHA256 digest against file_contexts entries.\n\n"
+ "This will check the directory selinux.sehash SHA256 digest for "
"<path> against\na newly generated digest based on the "
"file_context entries for that node\n(using the regx, mode "
"and path entries).\n", progname);
@@ -35,7 +35,7 @@ int main(int argc, char **argv)
char *paths[2] = { NULL, NULL };
uint8_t *xattr_digest = NULL;
uint8_t *calculated_digest = NULL;
- char *sha1_buf = NULL;
+ char *sha256_buf = NULL;
struct selabel_handle *hnd;
struct selinux_opt selabel_option[] = {
@@ -104,27 +104,27 @@ int main(int argc, char **argv)
&xattr_digest,
&digest_len);
- sha1_buf = calloc(1, digest_len * 2 + 1);
- if (!sha1_buf) {
+ sha256_buf = calloc(1, digest_len * 2 + 1);
+ if (!sha256_buf) {
fprintf(stderr, "Could not calloc buffer ERROR: %s\n",
strerror(errno));
return -1;
}
if (status) { /* They match */
- printf("xattr and file_contexts SHA1 digests match for: %s\n",
+ printf("xattr and file_contexts SHA256 digests match for: %s\n",
ftsent->fts_path);
if (calculated_digest) {
for (i = 0; i < digest_len; i++)
- sprintf((&sha1_buf[i * 2]),
+ sprintf((&sha256_buf[i * 2]),
"%02x",
calculated_digest[i]);
- printf("SHA1 digest: %s\n", sha1_buf);
+ printf("SHA256 digest: %s\n", sha256_buf);
}
} else {
if (!calculated_digest) {
- printf("No SHA1 digest available for: %s\n",
+ printf("No SHA256 digest available for: %s\n",
ftsent->fts_path);
printf("as file_context entry is \"<<none>>\"\n");
goto cleanup;
@@ -134,25 +134,25 @@ int main(int argc, char **argv)
ftsent->fts_path);
for (i = 0; i < digest_len; i++)
- sprintf((&sha1_buf[i * 2]), "%02x",
+ sprintf((&sha256_buf[i * 2]), "%02x",
calculated_digest[i]);
- printf("generated SHA1 digest: %s\n", sha1_buf);
+ printf("generated SHA256 digest: %s\n", sha256_buf);
if (!xattr_digest) {
printf("however there is no selinux.sehash xattr entry.\n");
} else {
printf("however it does NOT match the current entry of:\n");
for (i = 0; i < digest_len; i++)
- sprintf((&sha1_buf[i * 2]),
+ sprintf((&sha256_buf[i * 2]),
"%02x",
xattr_digest[i]);
- printf("%s\n", sha1_buf);
+ printf("%s\n", sha256_buf);
}
}
cleanup:
free(xattr_digest);
free(calculated_digest);
- free(sha1_buf);
+ free(sha256_buf);
break;
}
default:
--
2.47.0
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