rpms
/
shadow-utils
2
0
Fork 0
Code Issues Pull Requests Projects Releases Wiki Activity

Backport support for yescrypt hash method 

Signed-off-by: Björn Esser <besser82@fedoraproject.org>
This commit is contained in:
Björn Esser 2021-06-03 15:53:35 +02:00
parent cbc60528c3
commit cb2f54a2c1
No known key found for this signature in database
GPG Key ID: F52E98007594C21D
3 changed files with 984 additions and 3 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

960
shadow-4.8.1-yescrypt-support.patch Normal file
View File

@ -0,0 +1,960 @@
From 5cd04d03f94622c12220d4a6352824af081b8531 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Rodolphe=20Br=C3=A9ard?= <rodolphe@what.tf>
Date: Sun, 27 Dec 2020 21:09:25 +0100
Subject: [PATCH] Add yescrypt support
---
configure.ac | 13 +++++
etc/login.defs | 14 +++++
lib/encrypt.c | 3 ++
lib/getdef.c | 3 ++
libmisc/obscure.c | 3 ++
libmisc/salt.c | 94 +++++++++++++++++++++++++++++++-
src/chgpasswd.c | 113 ++++++++++++++++++++------------------
src/chpasswd.c | 107 +++++++++++++++++++-----------------
src/newusers.c | 134 +++++++++++++++++++++++++---------------------
src/passwd.c | 3 ++
10 files changed, 322 insertions(+), 165 deletions(-)
Index: shadow-4.8.1/configure.ac
===================================================================
--- shadow-4.8.1.orig/configure.ac
+++ shadow-4.8.1/configure.ac
@@ -290,6 +290,9 @@ AC_ARG_WITH(sha-crypt,
AC_ARG_WITH(bcrypt,
[AC_HELP_STRING([--with-bcrypt], [allow the bcrypt password encryption algorithm @<:@default=no@:>@])],
[with_bcrypt=$withval], [with_bcrypt=no])
+AC_ARG_WITH(yescrypt,
+ [AC_HELP_STRING([--with-yescrypt], [allow the yescrypt password encryption algorithm @<:@default=no@:>@])],
+ [with_yescrypt=$withval], [with_yescrypt=no])
AC_ARG_WITH(nscd,
[AC_HELP_STRING([--with-nscd], [enable support for nscd @<:@default=yes@:>@])],
[with_nscd=$withval], [with_nscd=yes])
@@ -322,6 +325,11 @@ if test "$with_bcrypt" = "yes"; then
AC_DEFINE(USE_BCRYPT, 1, [Define to allow the bcrypt password encryption algorithm])
fi
+AM_CONDITIONAL(USE_YESCRYPT, test "x$with_yescrypt" = "xyes")
+if test "$with_yescrypt" = "yes"; then
+ AC_DEFINE(USE_YESCRYPT, 1, [Define to allow the yescrypt password encryption algorithm])
+fi
+
if test "$with_nscd" = "yes"; then
AC_CHECK_FUNC(posix_spawn,
[AC_DEFINE(USE_NSCD, 1, [Define to support flushing of nscd caches])],
@@ -402,6 +410,10 @@ AC_SUBST(LIBCRYPT)
AC_CHECK_LIB(crypt, crypt, [LIBCRYPT=-lcrypt],
[AC_MSG_ERROR([crypt() not found])])
+AC_SUBST(LIYESCRYPT)
+AC_CHECK_LIB(crypt, crypt, [LIYESCRYPT=-lcrypt],
+ [AC_MSG_ERROR([crypt() not found])])
+
AC_SUBST(LIBACL)
if test "$with_acl" != "no"; then
AC_CHECK_HEADERS(acl/libacl.h attr/error_context.h, [acl_header="yes"], [acl_header="no"])
@@ -752,6 +764,7 @@ echo " shadow group support: $enable_sh
echo " S/Key support: $with_skey"
echo " SHA passwords encryption: $with_sha_crypt"
echo " bcrypt passwords encryption: $with_bcrypt"
+echo " yescrypt passwords encryption: $with_yescrypt"
echo " nscd support: $with_nscd"
echo " sssd support: $with_sssd"
echo " subordinate IDs support: $enable_subids"
Index: shadow-4.8.1/etc/login.defs
===================================================================
--- shadow-4.8.1.orig/etc/login.defs
+++ shadow-4.8.1/etc/login.defs
@@ -326,6 +326,7 @@ CHFN_RESTRICT rwh
# If set to SHA256, SHA256-based algorithm will be used for encrypting password
# If set to SHA512, SHA512-based algorithm will be used for encrypting password
# If set to BCRYPT, BCRYPT-based algorithm will be used for encrypting password
+# If set to YESCRYPT, YESCRYPT-based algorithm will be used for encrypting password
# If set to DES, DES-based algorithm will be used for encrypting password (default)
# Overrides the MD5_CRYPT_ENAB option
#
@@ -366,6 +367,19 @@ CHFN_RESTRICT rwh
#BCRYPT_MAX_ROUNDS 13
#
+# Only works if ENCRYPT_METHOD is set to YESCRYPT.
+#
+# Define the YESCRYPT cost factor.
+# With a higher cost factor, it is more difficult to brute-force the password.
+# However, more CPU time and more memory will be needed to authenticate users
+# if this value is increased.
+#
+# If not specified, a cost factor of 5 will be used.
+# The value must be within the 1-11 range.
+#
+#YESCRYPT_COST_FACTOR 5
+
+#
# List of groups to add to the user's supplementary group set
# when logging in from the console (as determined by the CONSOLE
# setting). Default is none.
Index: shadow-4.8.1/lib/encrypt.c
===================================================================
--- shadow-4.8.1.orig/lib/encrypt.c
+++ shadow-4.8.1/lib/encrypt.c
@@ -74,6 +74,9 @@
case '6':
method = "SHA512";
break;
+ case 'y':
+ method = "YESCRYPT";
+ break;
default:
{
static char nummethod[4] = "$x$";
Index: shadow-4.8.1/lib/getdef.c
===================================================================
--- shadow-4.8.1.orig/lib/getdef.c
+++ shadow-4.8.1/lib/getdef.c
@@ -117,6 +117,9 @@ static struct itemdef def_table[] = {
{"BCRYPT_MAX_ROUNDS", NULL},
{"BCRYPT_MIN_ROUNDS", NULL},
#endif
+#ifdef USE_YESCRYPT
+ {"YESCRYPT_COST_FACTOR", NULL},
+#endif
{"SUB_GID_COUNT", NULL},
{"SUB_GID_MAX", NULL},
{"SUB_GID_MIN", NULL},
Index: shadow-4.8.1/libmisc/obscure.c
===================================================================
--- shadow-4.8.1.orig/libmisc/obscure.c
+++ shadow-4.8.1/libmisc/obscure.c
@@ -272,6 +272,9 @@ static /*@observer@*//*@null@*/const cha
#ifdef USE_BCRYPT
|| (strcmp (result, "BCRYPT") == 0)
#endif
+#ifdef USE_YESCRYPT
+ || (strcmp (result, "YESCRYPT") == 0)
+#endif
) {
return NULL;
}
Index: shadow-4.8.1/libmisc/salt.c
===================================================================
--- shadow-4.8.1.orig/libmisc/salt.c
+++ shadow-4.8.1/libmisc/salt.c
@@ -32,6 +32,10 @@ static /*@observer@*/const char *SHA_sal
static /*@observer@*/const char *gensalt_bcrypt (void);
static /*@observer@*/const char *BCRYPT_salt_rounds (/*@null@*/int *prefered_rounds);
#endif /* USE_BCRYPT */
+#ifdef USE_YESCRYPT
+static /*@observer@*/const char *gensalt_yescrypt (void);
+static /*@observer@*/const char *YESCRYPT_salt_cost (/*@null@*/long *prefered_rounds);
+#endif /* USE_YESCRYPT */
#ifndef HAVE_L64A
static /*@observer@*/char *l64a(long value)
@@ -263,6 +267,78 @@ static /*@observer@*/const char *gensalt
}
#endif /* USE_BCRYPT */
+#ifdef USE_YESCRYPT
+/* Default cost if not explicitly specified. */
+#define Y_COST_DEFAULT 5
+/* Minimum cost. */
+#define Y_COST_MIN 1
+/* Maximum cost. */
+#define Y_COST_MAX 11
+/*
+ * Return a salt prefix specifying the cost for the YESCRYPT method.
+ */
+static /*@observer@*/const char *YESCRYPT_salt_cost (/*@null@*/long *prefered_cost)
+{
+ static char cost_prefix[5];
+ long cost;
+
+ if (NULL == prefered_cost) {
+ cost = getdef_num ("YESCRYPT_COST_FACTOR", Y_COST_DEFAULT);
+ } else {
+ cost = *prefered_cost;
+ }
+
+ if (cost < Y_COST_MIN) {
+ cost = Y_COST_MIN;
+ }
+ if (cost > Y_COST_MAX) {
+ cost = Y_COST_MAX;
+ }
+
+ cost_prefix[0] = 'j';
+ if (cost < 3) {
+ cost_prefix[1] = 0x36 + cost;
+ } else if (cost < 6) {
+ cost_prefix[1] = 0x34 + cost;
+ } else {
+ cost_prefix[1] = 0x3b + cost;
+ }
+ cost_prefix[2] = cost >= 3 ? 'T' : '5';
+ cost_prefix[3] = '$';
+ cost_prefix[4] = 0;
+
+ return cost_prefix;
+}
+
+/*
+ * Default number of base64 characters used for the salt.
+ * 24 characters gives a 144 bits (18 bytes) salt. Unlike the more
+ * traditional 128 bits (16 bytes) salt, this 144 bits salt is always
+ * represented by the same number of base64 characters without padding
+ * issue, even with a non-standard base64 encoding scheme.
+ */
+#define YESCRYPT_SALT_SIZE 24
+/*
+ * Generate a 22 character salt string for yescrypt.
+ */
+static /*@observer@*/const char *gensalt_yescrypt (void)
+{
+ static char salt[32];
+
+ salt[0] = '\0';
+
+ seedRNG ();
+ strcat (salt, l64a (random()));
+ do {
+ strcat (salt, l64a (random()));
+ } while (strlen (salt) < YESCRYPT_SALT_SIZE);
+
+ salt[YESCRYPT_SALT_SIZE] = '\0';
+
+ return salt;
+}
+#endif /* USE_YESCRYPT */
+
/*
* Generate salt of size salt_size.
*/
@@ -302,6 +378,7 @@ static /*@observer@*/const char *gensalt
* If meth is specified, an additional parameter can be provided.
* * For the SHA256 and SHA512 method, this specifies the number of rounds
* (if not NULL).
+ * * For the YESCRYPT method, this specifies the cost factor (if not NULL).
*/
/*@observer@*/const char *crypt_make_salt (/*@null@*//*@observer@*/const char *meth, /*@null@*/void *arg)
{
@@ -333,6 +410,11 @@ static /*@observer@*/const char *gensalt
BCRYPTMAGNUM(result);
strcat(result, BCRYPT_salt_rounds((int *)arg));
#endif /* USE_BCRYPT */
+#ifdef USE_YESCRYPT
+ } else if (0 == strcmp (method, "YESCRYPT")) {
+ MAGNUM(result, 'y');
+ strcat(result, YESCRYPT_salt_cost((int *)arg));
+#endif /* USE_YESCRYPT */
#ifdef USE_SHA_CRYPT
} else if (0 == strcmp (method, "SHA256")) {
MAGNUM(result, '5');
@@ -362,11 +444,21 @@ static /*@observer@*/const char *gensalt
return result;
} else {
#endif /* USE_BCRYPT */
+#ifdef USE_YESCRYPT
+ if (0 == strcmp (method, "YESCRYPT")) {
+ strncat (result, gensalt_yescrypt (),
+ sizeof (result) - strlen (result) - 1);
+ return result;
+ } else {
+#endif /* USE_YESCRYPT */
strncat (result, gensalt (salt_len),
sizeof (result) - strlen (result) - 1);
+#ifdef USE_YESCRYPT
+ }
+#endif /* USE_YESCRYPT */
#ifdef USE_BCRYPT
}
-#endif /* USE_BCRYPT */
+#endif /* USE_BCRYPT */
return result;
}
Index: shadow-4.8.1/src/chgpasswd.c
===================================================================
--- shadow-4.8.1.orig/src/chgpasswd.c
+++ shadow-4.8.1/src/chgpasswd.c
@@ -69,9 +69,9 @@ const char *Prog;
FILE *shadow_logfd = NULL;
static bool eflg = false;
static bool md5flg = false;
-#if defined(USE_SHA_CRYPT) || defined(USE_BCRYPT)
+#if defined(USE_SHA_CRYPT) || defined(USE_BCRYPT) || defined(USE_YESCRYPT)
static bool sflg = false;
-#endif /* USE_SHA_CRYPT || USE_BCRYPT */
+#endif /* USE_SHA_CRYPT || USE_BCRYPT || USE_YESCRYPT */
static /*@null@*//*@observer@*/const char *crypt_method = NULL;
#define cflg (NULL != crypt_method)
@@ -81,6 +81,9 @@ static long sha_rounds = 5000;
#ifdef USE_BCRYPT
static long bcrypt_rounds = 13;
#endif
+#ifdef USE_YESCRYPT
+static long yescrypt_cost = 5;
+#endif
#ifdef SHADOWGRP
static bool is_shadow_grp;
@@ -139,14 +142,15 @@ static /*@noreturn@*/void usage (int sta
Prog);
(void) fprintf (usageout,
_(" -c, --crypt-method METHOD the crypt method (one of %s)\n"),
-#if !defined(USE_SHA_CRYPT) && !defined(USE_BCRYPT)
"NONE DES MD5"
-#elif defined(USE_SHA_CRYPT) && defined(USE_BCRYPT)
- "NONE DES MD5 SHA256 SHA512 BCRYPT"
-#elif defined(USE_SHA_CRYPT)
- "NONE DES MD5 SHA256 SHA512"
-#else
- "NONE DES MD5 BCRYPT"
+#if defined(USE_SHA_CRYPT)
+ " SHA256 SHA512"
+#endif
+#if defined(USE_BCRYPT)
+ " BCRYPT"
+#endif
+#if defined(USE_YESCRYPT)
+ " YESCRYPT"
#endif
);
(void) fputs (_(" -e, --encrypted supplied passwords are encrypted\n"), usageout);
@@ -155,11 +159,11 @@ static /*@noreturn@*/void usage (int sta
" the MD5 algorithm\n"),
usageout);
(void) fputs (_(" -R, --root CHROOT_DIR directory to chroot into\n"), usageout);
-#if defined(USE_SHA_CRYPT) || defined(USE_BCRYPT)
- (void) fputs (_(" -s, --sha-rounds number of rounds for the SHA or BCRYPT\n"
- " crypt algorithms\n"),
+#if defined(USE_SHA_CRYPT) || defined(USE_BCRYPT) || defined(USE_YESCRYPT)
+ (void) fputs (_(" -s, --sha-rounds number of rounds for the SHA, BCRYPT\n"
+ " or YESCRYPT crypt algorithms\n"),
usageout);
-#endif /* USE_SHA_CRYPT || USE_BCRYPT */
+#endif /* USE_SHA_CRYPT || USE_BCRYPT || USE_YESCRYPT */
(void) fputs ("\n", usageout);
exit (status);
@@ -173,19 +177,22 @@ static /*@noreturn@*/void usage (int sta
static void process_flags (int argc, char **argv)
{
int c;
+#if defined(USE_SHA_CRYPT) || defined(USE_BCRYPT) || defined(USE_YESCRYPT)
+ int bad_s;
+#endif /* USE_SHA_CRYPT || USE_BCRYPT || USE_YESCRYPT */
static struct option long_options[] = {
{"crypt-method", required_argument, NULL, 'c'},
{"encrypted", no_argument, NULL, 'e'},
{"help", no_argument, NULL, 'h'},
{"md5", no_argument, NULL, 'm'},
{"root", required_argument, NULL, 'R'},
-#if defined(USE_SHA_CRYPT) || defined(USE_BCRYPT)
+#if defined(USE_SHA_CRYPT) || defined(USE_BCRYPT) || defined(USE_YESCRYPT)
{"sha-rounds", required_argument, NULL, 's'},
-#endif /* USE_SHA_CRYPT || USE_BCRYPT */
+#endif /* USE_SHA_CRYPT || USE_BCRYPT || USE_YESCRYPT */
{NULL, 0, NULL, '\0'}
};
while ((c = getopt_long (argc, argv,
-#if defined(USE_SHA_CRYPT) || defined(USE_BCRYPT)
+#if defined(USE_SHA_CRYPT) || defined(USE_BCRYPT) || defined(USE_YESCRYPT)
"c:ehmR:s:",
#else
"c:ehmR:",
@@ -206,40 +213,36 @@ static void process_flags (int argc, cha
break;
case 'R': /* no-op, handled in process_root_flag () */
break;
-#if defined(USE_SHA_CRYPT) && defined(USE_BCRYPT)
+#if defined(USE_SHA_CRYPT) || defined(USE_BCRYPT) || defined(USE_YESCRYPT)
case 's':
sflg = true;
+ bad_s = 0;
+#if defined(USE_SHA_CRYPT)
if ( ( ((0 == strcmp (crypt_method, "SHA256")) || (0 == strcmp (crypt_method, "SHA512")))
- && (0 == getlong(optarg, &sha_rounds)))
- || ( (0 == strcmp (crypt_method, "BCRYPT"))
+ && (0 == getlong(optarg, &sha_rounds)))) {
+ bad_s = 1;
+ }
+#endif /* USE_SHA_CRYPT */
+#if defined(USE_BCRYPT)
+ if (( (0 == strcmp (crypt_method, "BCRYPT"))
&& (0 == getlong(optarg, &bcrypt_rounds)))) {
+ bad_s = 1;
+ }
+#endif /* USE_BCRYPT */
+#if defined(USE_YESCRYPT)
+ if (( (0 == strcmp (crypt_method, "YESCRYPT"))
+ && (0 == getlong(optarg, &yescrypt_cost)))) {
+ bad_s = 1;
+ }
+#endif /* USE_YESCRYPT */
+ if (bad_s != 0) {
fprintf (stderr,
_("%s: invalid numeric argument '%s'\n"),
Prog, optarg);
usage (E_USAGE);
}
break;
-#elif defined(USE_SHA_CRYPT)
- case 's':
- sflg = true;
- if (0 == getlong(optarg, &sha_rounds)) {
- fprintf (stderr,
- _("%s: invalid numeric argument '%s'\n"),
- Prog, optarg);
- usage (E_USAGE);
- }
- break;
-#elif defined(USE_BCRYPT)
- case 's':
- sflg = true;
- if (0 == getlong(optarg, &bcrypt_rounds)) {
- fprintf (stderr,
- _("%s: invalid numeric argument '%s'\n"),
- Prog, optarg);
- usage (E_USAGE);
- }
- break;
-#endif
+#endif /* USE_SHA_CRYPT || USE_BCRYPT || USE_YESCRYPT */
default:
usage (E_USAGE);
@@ -258,7 +261,7 @@ static void process_flags (int argc, cha
*/
static void check_flags (void)
{
-#if defined(USE_SHA_CRYPT) || defined(USE_BCRYPT)
+#if defined(USE_SHA_CRYPT) || defined(USE_BCRYPT) || defined(USE_YESCRYPT)
if (sflg && !cflg) {
fprintf (stderr,
_("%s: %s flag is only allowed with the %s flag\n"),
@@ -282,10 +285,13 @@ static void check_flags (void)
#ifdef USE_SHA_CRYPT
&& (0 != strcmp (crypt_method, "SHA256"))
&& (0 != strcmp (crypt_method, "SHA512"))
-#endif
+#endif /* USE_SHA_CRYPT */
#ifdef USE_BCRYPT
&& (0 != strcmp (crypt_method, "BCRYPT"))
-#endif
+#endif /* USE_BCRYPT */
+#ifdef USE_YESCRYPT
+ && (0 != strcmp (crypt_method, "YESCRYPT"))
+#endif /* USE_YESCRYPT */
) {
fprintf (stderr,
_("%s: unsupported crypt method: %s\n"),
@@ -592,23 +598,24 @@ int main (int argc, char **argv)
if (md5flg) {
crypt_method = "MD5";
}
-#if defined(USE_SHA_CRYPT) && defined(USE_BCRYPT)
+#if defined(USE_SHA_CRYPT) || defined(USE_BCRYPT) || defined(USE_YESCRYPT)
if (sflg) {
+#if defined(USE_SHA_CRYPT)
if ( (0 == strcmp (crypt_method, "SHA256"))
|| (0 == strcmp (crypt_method, "SHA512"))) {
arg = &sha_rounds;
}
- else if (0 == strcmp (crypt_method, "BCRYPT")) {
+#endif /* USE_SHA_CRYPT */
+#if defined(USE_BCRYPT)
+ if (0 == strcmp (crypt_method, "BCRYPT")) {
arg = &bcrypt_rounds;
}
- }
-#elif defined(USE_SHA_CRYPT)
- if (sflg) {
- arg = &sha_rounds;
- }
-#elif defined(USE_BCRYPT)
- if (sflg) {
- arg = &bcrypt_rounds;
+#endif /* USE_BCRYPT */
+#if defined(USE_YESCRYPT)
+ if (0 == strcmp (crypt_method, "YESCRYPT")) {
+ arg = &yescrypt_cost;
+ }
+#endif /* USE_YESCRYPT */
}
#endif
salt = crypt_make_salt (crypt_method, arg);
Index: shadow-4.8.1/src/chpasswd.c
===================================================================
--- shadow-4.8.1.orig/src/chpasswd.c
+++ shadow-4.8.1/src/chpasswd.c
@@ -66,7 +66,7 @@ const char *Prog;
FILE *shadow_logfd = NULL;
static bool eflg = false;
static bool md5flg = false;
-#if defined(USE_SHA_CRYPT) || defined(USE_BCRYPT)
+#if defined(USE_SHA_CRYPT) || defined(USE_BCRYPT) || defined(USE_YESCRYPT)
static bool sflg = false;
#endif
@@ -78,6 +78,9 @@ static long sha_rounds = 5000;
#ifdef USE_BCRYPT
static long bcrypt_rounds = 13;
#endif
+#ifdef USE_YESCRYPT
+static long yescrypt_cost = 5;
+#endif
static bool is_shadow_pwd;
static bool pw_locked = false;
@@ -129,14 +132,15 @@ static /*@noreturn@*/void usage (int sta
Prog);
(void) fprintf (usageout,
_(" -c, --crypt-method METHOD the crypt method (one of %s)\n"),
-#if !defined(USE_SHA_CRYPT) && !defined(USE_BCRYPT)
"NONE DES MD5"
-#elif defined(USE_SHA_CRYPT) && defined(USE_BCRYPT)
- "NONE DES MD5 SHA256 SHA512 BCRYPT"
-#elif defined(USE_SHA_CRYPT)
- "NONE DES MD5 SHA256 SHA512"
-#else
- "NONE DES MD5 BCRYPT"
+#if defined(USE_SHA_CRYPT)
+ " SHA256 SHA512"
+#endif
+#if defined(USE_BCRYPT)
+ " BCRYPT"
+#endif
+#if defined(USE_YESCRYPT)
+ " YESCRYPT"
#endif
);
(void) fputs (_(" -e, --encrypted supplied passwords are encrypted\n"), usageout);
@@ -145,11 +149,11 @@ static /*@noreturn@*/void usage (int sta
" the MD5 algorithm\n"),
usageout);
(void) fputs (_(" -R, --root CHROOT_DIR directory to chroot into\n"), usageout);
-#if defined(USE_SHA_CRYPT) || defined(USE_BCRYPT)
- (void) fputs (_(" -s, --sha-rounds number of rounds for the SHA or BCRYPT\n"
- " crypt algorithms\n"),
+#if defined(USE_SHA_CRYPT) || defined(USE_BCRYPT) || defined(USE_YESCRYPT)
+ (void) fputs (_(" -s, --sha-rounds number of rounds for the SHA, BCRYPT\n"
+ " or YESCRYPT crypt algorithms\n"),
usageout);
-#endif /* USE_SHA_CRYPT || USE_BCRYPT */
+#endif /* USE_SHA_CRYPT || USE_BCRYPT || USE_YESCRYPT */
(void) fputs ("\n", usageout);
exit (status);
@@ -163,20 +167,23 @@ static /*@noreturn@*/void usage (int sta
static void process_flags (int argc, char **argv)
{
int c;
+#if defined(USE_SHA_CRYPT) || defined(USE_BCRYPT) || defined(USE_YESCRYPT)
+ int bad_s;
+#endif /* USE_SHA_CRYPT || USE_BCRYPT || USE_YESCRYPT */
static struct option long_options[] = {
{"crypt-method", required_argument, NULL, 'c'},
{"encrypted", no_argument, NULL, 'e'},
{"help", no_argument, NULL, 'h'},
{"md5", no_argument, NULL, 'm'},
{"root", required_argument, NULL, 'R'},
-#if defined(USE_SHA_CRYPT) || defined(USE_BCRYPT)
+#if defined(USE_SHA_CRYPT) || defined(USE_BCRYPT) || defined(USE_YESCRYPT)
{"sha-rounds", required_argument, NULL, 's'},
-#endif /* USE_SHA_CRYPT || USE_BCRYPT */
+#endif /* USE_SHA_CRYPT || USE_BCRYPT || USE_YESCRYPT */
{NULL, 0, NULL, '\0'}
};
while ((c = getopt_long (argc, argv,
-#if defined(USE_SHA_CRYPT) || defined(USE_BCRYPT)
+#if defined(USE_SHA_CRYPT) || defined(USE_BCRYPT) || defined(USE_YESCRYPT)
"c:ehmR:s:",
#else
"c:ehmR:",
@@ -197,40 +204,36 @@ static void process_flags (int argc, cha
break;
case 'R': /* no-op, handled in process_root_flag () */
break;
-#if defined(USE_SHA_CRYPT) && defined(USE_BCRYPT)
+#if defined(USE_SHA_CRYPT) || defined(USE_BCRYPT) || defined(USE_YESCRYPT)
case 's':
sflg = true;
+ bad_s = 0;
+#if defined(USE_SHA_CRYPT)
if ( ( ((0 == strcmp (crypt_method, "SHA256")) || (0 == strcmp (crypt_method, "SHA512")))
- && (0 == getlong(optarg, &sha_rounds)))
- || ( (0 == strcmp (crypt_method, "BCRYPT"))
+ && (0 == getlong(optarg, &sha_rounds)))) {
+ bad_s = 1;
+ }
+#endif /* USE_SHA_CRYPT */
+#if defined(USE_BCRYPT)
+ if (( (0 == strcmp (crypt_method, "BCRYPT"))
&& (0 == getlong(optarg, &bcrypt_rounds)))) {
+ bad_s = 1;
+ }
+#endif /* USE_BCRYPT */
+#if defined(USE_YESCRYPT)
+ if (( (0 == strcmp (crypt_method, "YESCRYPT"))
+ && (0 == getlong(optarg, &yescrypt_cost)))) {
+ bad_s = 1;
+ }
+#endif /* USE_YESCRYPT */
+ if (bad_s != 0) {
fprintf (stderr,
_("%s: invalid numeric argument '%s'\n"),
Prog, optarg);
usage (E_USAGE);
}
break;
-#elif defined(USE_SHA_CRYPT)
- case 's':
- sflg = true;
- if (0 == getlong(optarg, &sha_rounds)) {
- fprintf (stderr,
- _("%s: invalid numeric argument '%s'\n"),
- Prog, optarg);
- usage (E_USAGE);
- }
- break;
-#elif defined(USE_BCRYPT)
- case 's':
- sflg = true;
- if (0 == getlong(optarg, &bcrypt_rounds)) {
- fprintf (stderr,
- _("%s: invalid numeric argument '%s'\n"),
- Prog, optarg);
- usage (E_USAGE);
- }
- break;
-#endif
+#endif /* USE_SHA_CRYPT || USE_BCRYPT || USE_YESCRYPT */
default:
usage (E_USAGE);
@@ -249,7 +252,7 @@ static void process_flags (int argc, cha
*/
static void check_flags (void)
{
-#if defined(USE_SHA_CRYPT) || defined(USE_BCRYPT)
+#if defined(USE_SHA_CRYPT) || defined(USE_BCRYPT) || defined(USE_YESCRYPT)
if (sflg && !cflg) {
fprintf (stderr,
_("%s: %s flag is only allowed with the %s flag\n"),
@@ -277,6 +280,9 @@ static void check_flags (void)
#ifdef USE_BCRYPT
&& (0 != strcmp (crypt_method, "BCRYPT"))
#endif /* USE_BCRYPT */
+#ifdef USE_YESCRYPT
+ && (0 != strcmp (crypt_method, "YESCRYPT"))
+#endif /* USE_YESCRYPT */
) {
fprintf (stderr,
_("%s: unsupported crypt method: %s\n"),
@@ -604,23 +610,24 @@ int main (int argc, char **argv)
if (md5flg) {
crypt_method = "MD5";
}
-#if defined(USE_SHA_CRYPT) && defined(USE_BCRYPT)
+#if defined(USE_SHA_CRYPT) || defined(USE_BCRYPT) || defined(USE_YESCRYPT)
if (sflg) {
+#if defined(USE_SHA_CRYPT)
if ( (0 == strcmp (crypt_method, "SHA256"))
|| (0 == strcmp (crypt_method, "SHA512"))) {
arg = &sha_rounds;
}
- else if (0 == strcmp (crypt_method, "BCRYPT")) {
+#endif /* USE_SHA_CRYPT */
+#if defined(USE_BCRYPT)
+ if (0 == strcmp (crypt_method, "BCRYPT")) {
arg = &bcrypt_rounds;
}
- }
-#elif defined(USE_SHA_CRYPT)
- if (sflg) {
- arg = &sha_rounds;
- }
-#elif defined(USE_BCRYPT)
- if (sflg) {
- arg = &bcrypt_rounds;
+#endif /* USE_BCRYPT */
+#if defined(USE_YESCRYPT)
+ if (0 == strcmp (crypt_method, "YESCRYPT")) {
+ arg = &yescrypt_cost;
+ }
+#endif /* USE_YESCRYPT */
}
#endif
salt = crypt_make_salt (crypt_method, arg);
Index: shadow-4.8.1/src/newusers.c
===================================================================
--- shadow-4.8.1.orig/src/newusers.c
+++ shadow-4.8.1/src/newusers.c
@@ -90,6 +90,9 @@ static long sha_rounds = 5000;
#ifdef USE_BCRYPT
static long bcrypt_rounds = 13;
#endif /* USE_BCRYPT */
+#ifdef USE_YESCRYPT
+static long yescrypt_cost = 5;
+#endif /* USE_YESCRYPT */
#endif /* !USE_PAM */
static bool is_shadow;
@@ -140,14 +143,15 @@ static void usage (int status)
#ifndef USE_PAM
(void) fprintf (usageout,
_(" -c, --crypt-method METHOD the crypt method (one of %s)\n"),
-#if !defined(USE_SHA_CRYPT) && !defined(USE_BCRYPT)
- "NONE DES MD5"
-#elif defined(USE_SHA_CRYPT) && defined(USE_BCRYPT)
- "NONE DES MD5 SHA256 SHA512 BCRYPT"
-#elif defined(USE_SHA_CRYPT)
- "NONE DES MD5 SHA256 SHA512"
-#else
- "NONE DES MD5 BCRYPT"
+ "NONE DES MD5"
+#if defined(USE_SHA_CRYPT)
+ " SHA256 SHA512"
+#endif
+#if defined(USE_BCRYPT)
+ " BCRYPT"
+#endif
+#if defined(USE_YESCRYPT)
+ " YESCRYPT"
#endif
);
#endif /* !USE_PAM */
@@ -155,11 +159,11 @@ static void usage (int status)
(void) fputs (_(" -r, --system create system accounts\n"), usageout);
(void) fputs (_(" -R, --root CHROOT_DIR directory to chroot into\n"), usageout);
#ifndef USE_PAM
-#if defined(USE_SHA_CRYPT) || defined(USE_BCRYPT)
- (void) fputs (_(" -s, --sha-rounds number of rounds for the SHA or BCRYPT\n"
- " crypt algorithms\n"),
+#if defined(USE_SHA_CRYPT) || defined(USE_BCRYPT) || defined(USE_YESCRYPT)
+ (void) fputs (_(" -s, --sha-rounds number of rounds for the SHA, BCRYPT\n"
+ " or YESCRYPT crypt algorithms\n"),
usageout);
-#endif /* USE_SHA_CRYPT || USE_BCRYPT */
+#endif /* USE_SHA_CRYPT || USE_BCRYPT || USE_YESCRYPT */
#endif /* !USE_PAM */
(void) fputs ("\n", usageout);
@@ -434,25 +438,28 @@ static int update_passwd (struct passwd
void *crypt_arg = NULL;
char *cp;
if (NULL != crypt_method) {
-#if defined(USE_SHA_CRYPT) && defined(USE_BCRYPT)
+#if defined(USE_SHA_CRYPT)
if (sflg) {
if ( (0 == strcmp (crypt_method, "SHA256"))
|| (0 == strcmp (crypt_method, "SHA512"))) {
crypt_arg = &sha_rounds;
}
- else if (0 == strcmp (crypt_method, "BCRYPT")) {
- crypt_arg = &bcrypt_rounds;
- }
}
-#elif defined(USE_SHA_CRYPT)
+#endif /* USE_SHA_CRYPT */
+#if defined(USE_BCRYPT)
if (sflg) {
- crypt_arg = &sha_rounds;
+ if (0 == strcmp (crypt_method, "BCRYPT")) {
+ crypt_arg = &bcrypt_rounds;
+ }
}
-#elif defined(USE_BCRYPT)
+#endif /* USE_BCRYPT */
+#if defined(USE_YESCRYPT)
if (sflg) {
- crypt_arg = &bcrypt_rounds;
+ if (0 == strcmp (crypt_method, "YESCRYPT")) {
+ crypt_arg = &yescrypt_cost;
+ }
}
-#endif
+#endif /* USE_YESCRYPT */
}
if ((NULL != crypt_method) && (0 == strcmp(crypt_method, "NONE"))) {
@@ -485,25 +492,28 @@ static int add_passwd (struct passwd *pw
#ifndef USE_PAM
void *crypt_arg = NULL;
if (NULL != crypt_method) {
-#if defined(USE_SHA_CRYPT) && defined(USE_BCRYPT)
+#if defined(USE_SHA_CRYPT)
if (sflg) {
if ( (0 == strcmp (crypt_method, "SHA256"))
|| (0 == strcmp (crypt_method, "SHA512"))) {
crypt_arg = &sha_rounds;
}
- else if (0 == strcmp (crypt_method, "BCRYPT")) {
- crypt_arg = &bcrypt_rounds;
- }
}
-#elif defined(USE_SHA_CRYPT)
+#endif /* USE_SHA_CRYPT */
+#if defined(USE_BCRYPT)
if (sflg) {
- crypt_arg = &sha_rounds;
+ if (0 == strcmp (crypt_method, "BCRYPT")) {
+ crypt_arg = &bcrypt_rounds;
+ }
}
-#elif defined(USE_BCRYPT)
+#endif /* USE_BCRYPT */
+#if defined(USE_YESCRYPT)
if (sflg) {
- crypt_arg = &bcrypt_rounds;
+ if (0 == strcmp (crypt_method, "YESCRYPT")) {
+ crypt_arg = &yescrypt_cost;
+ }
}
-#endif
+#endif /* USE_PAM */
}
/*
@@ -620,6 +630,9 @@ static int add_passwd (struct passwd *pw
static void process_flags (int argc, char **argv)
{
int c;
+#if defined(USE_SHA_CRYPT) || defined(USE_BCRYPT) || defined(USE_YESCRYPT)
+ int bad_s;
+#endif /* USE_SHA_CRYPT || USE_BCRYPT || USE_YESCRYPT */
static struct option long_options[] = {
{"badnames", no_argument, NULL, 'b'},
#ifndef USE_PAM
@@ -629,20 +642,20 @@ static void process_flags (int argc, cha
{"system", no_argument, NULL, 'r'},
{"root", required_argument, NULL, 'R'},
#ifndef USE_PAM
-#if defined(USE_SHA_CRYPT) || defined(USE_BCRYPT)
+#if defined(USE_SHA_CRYPT) || defined(USE_BCRYPT) || defined(USE_YESCRYPT)
{"sha-rounds", required_argument, NULL, 's'},
-#endif /* USE_SHA_CRYPT || USE_BCRYPT */
+#endif /* USE_SHA_CRYPT || USE_BCRYPT || USE_YESCRYPT */
#endif /* !USE_PAM */
{NULL, 0, NULL, '\0'}
};
while ((c = getopt_long (argc, argv,
#ifndef USE_PAM
-#if defined(USE_SHA_CRYPT) || defined(USE_BCRYPT)
+#if defined(USE_SHA_CRYPT) || defined(USE_BCRYPT) || defined(USE_YESCRYPT)
"c:bhrs:",
-#else /* !USE_SHA_CRYPT && !USE_BCRYPT */
+#else /* !USE_SHA_CRYPT && !USE_BCRYPT && !USE_YESCRYPT */
"c:bhr",
-#endif /* USE_SHA_CRYPT || USE_BCRYPT */
+#endif /* USE_SHA_CRYPT || USE_BCRYPT || USE_YESCRYPT */
#else /* USE_PAM */
"bhr",
#endif
@@ -665,40 +678,36 @@ static void process_flags (int argc, cha
case 'R': /* no-op, handled in process_root_flag () */
break;
#ifndef USE_PAM
-#if defined(USE_SHA_CRYPT) && defined(USE_BCRYPT)
+#if defined(USE_SHA_CRYPT) || defined(USE_BCRYPT) || defined(USE_YESCRYPT)
case 's':
sflg = true;
+ bad_s = 0;
+#if defined(USE_SHA_CRYPT)
if ( ( ((0 == strcmp (crypt_method, "SHA256")) || (0 == strcmp (crypt_method, "SHA512")))
- && (0 == getlong(optarg, &sha_rounds)))
- || ( (0 == strcmp (crypt_method, "BCRYPT"))
+ && (0 == getlong(optarg, &sha_rounds)))) {
+ bad_s = 1;
+ }
+#endif /* USE_SHA_CRYPT */
+#if defined(USE_BCRYPT)
+ if (( (0 == strcmp (crypt_method, "BCRYPT"))
&& (0 == getlong(optarg, &bcrypt_rounds)))) {
+ bad_s = 1;
+ }
+#endif /* USE_BCRYPT */
+#if defined(USE_YESCRYPT)
+ if (( (0 == strcmp (crypt_method, "YESCRYPT"))
+ && (0 == getlong(optarg, &yescrypt_cost)))) {
+ bad_s = 1;
+ }
+#endif /* USE_YESCRYPT */
+ if (bad_s != 0) {
fprintf (stderr,
_("%s: invalid numeric argument '%s'\n"),
Prog, optarg);
usage (EXIT_FAILURE);
}
break;
-#elif defined(USE_SHA_CRYPT)
- case 's':
- sflg = true;
- if (0 == getlong(optarg, &sha_rounds)) {
- fprintf (stderr,
- _("%s: invalid numeric argument '%s'\n"),
- Prog, optarg);
- usage (EXIT_FAILURE);
- }
- break;
-#elif defined(USE_BCRYPT)
- case 's':
- sflg = true;
- if (0 == getlong(optarg, &bcrypt_rounds)) {
- fprintf (stderr,
- _("%s: invalid numeric argument '%s'\n"),
- Prog, optarg);
- usage (EXIT_FAILURE);
- }
- break;
-#endif
+#endif /* USE_SHA_CRYPT || USE_BCRYPT || USE_YESCRYPT */
#endif /* !USE_PAM */
default:
usage (EXIT_FAILURE);
@@ -732,14 +741,14 @@ static void process_flags (int argc, cha
static void check_flags (void)
{
#ifndef USE_PAM
-#if defined(USE_SHA_CRYPT) || defined(USE_BCRYPT)
+#if defined(USE_SHA_CRYPT) || defined(USE_BCRYPT) || defined(USE_YESCRYPT)
if (sflg && !cflg) {
fprintf (stderr,
_("%s: %s flag is only allowed with the %s flag\n"),
Prog, "-s", "-c");
usage (EXIT_FAILURE);
}
-#endif
+#endif /* USE_SHA_CRYPT || USE_BCRYPT || USE_YESCRYPT */
if (cflg) {
if ( (0 != strcmp (crypt_method, "DES"))
@@ -752,6 +761,9 @@ static void check_flags (void)
#ifdef USE_BCRYPT
&& (0 != strcmp (crypt_method, "BCRYPT"))
#endif /* USE_BCRYPT */
+#ifdef USE_YESCRYPT
+ && (0 != strcmp (crypt_method, "YESCRYPT"))
+#endif /* USE_YESCRYPT */
) {
fprintf (stderr,
_("%s: unsupported crypt method: %s\n"),
Index: shadow-4.8.1/src/passwd.c
===================================================================
--- shadow-4.8.1.orig/src/passwd.c
+++ shadow-4.8.1/src/passwd.c
@@ -283,7 +283,10 @@ static int new_password (const struct pa
#endif /* USE_SHA_CRYPT */
#ifdef USE_BCRYPT
|| (strcmp (method, "BCRYPT") == 0)
-#endif /* USE_SHA_CRYPT */
+#endif /* USE_BCRYPT*/
+#ifdef USE_YESCRYPT
+ || (strcmp (method, "YESCRYPT") == 0)
+#endif /* USE_YESCRYPT*/
) {
pass_max_len = -1;

18
shadow-utils.login.defs
View File

@ -198,10 +198,11 @@ SUB_GID_COUNT 65536
# If set to MD5, MD5-based algorithm will be used for encrypting password
# If set to SHA256, SHA256-based algorithm will be used for encrypting password
# If set to SHA512, SHA512-based algorithm will be used for encrypting password
# If set to BLOWFISH, BLOWFISH-based algorithm will be used for encrypting password
# If set to BCRYPT, BCRYPT-based algorithm will be used for encrypting password
# If set to YESCRYPT, YESCRYPT-based algorithm will be used for encrypting password
# If set to DES, DES-based algorithm will be used for encrypting password (default)
#
ENCRYPT_METHOD SHA512
ENCRYPT_METHOD YESCRYPT
#
# Only works if ENCRYPT_METHOD is set to SHA256 or SHA512.
@ -220,6 +221,19 @@ ENCRYPT_METHOD SHA512
# Currently BCRYPT_MIN_ROUNDS and BCRYPT_MAX_ROUNDS are not supported
#
# Only works if ENCRYPT_METHOD is set to YESCRYPT.
#
# Define the YESCRYPT cost factor.
# With a higher cost factor, it is more difficult to brute-force the password.
# However, more CPU time and more memory will be needed to authenticate users
# if this value is increased.
#
# If not specified, a cost factor of 5 will be used.
# The value must be within the 1-11 range.
#
#YESCRYPT_COST_FACTOR 5
# Currently CONSOLE_GROUPS is not supported
#

9
shadow-utils.spec
View File

@ -1,7 +1,7 @@
Summary: Utilities for managing accounts and shadow password files
Name: shadow-utils
Version: 4.8.1
Release: 11%{?dist}
Release: 12%{?dist}
Epoch: 2
URL: https://github.com/shadow-maint/shadow
Source0: https://github.com/shadow-maint/shadow/releases/download/%{version}/shadow-%{version}.tar.xz
@ -95,6 +95,8 @@ Patch55: shadow-4.8.1-libsubid_fix_newusers_nss_provides_subids.patch
Patch56: shadow-4.8.1-man_clarify_subid_delegation.patch
# https://github.com/shadow-maint/shadow/commit/bd920ab36a6c641e4a8769f8c7f8ca738ec61820
Patch57: shadow-4.8.1-libsubid_make_logfd_not_extern.patch
# https://github.com/shadow-maint/shadow/commit/5cd04d03f94622c12220d4a6352824af081b8531
Patch58: shadow-4.8.1-yescrypt-support.patch
License: BSD and GPLv2+
BuildRequires: make
@ -177,6 +179,7 @@ Development files for shadow-utils-subid.
%patch55 -p1 -b .libsubid_fix_newusers_nss_provides_subids
%patch56 -p1 -b .man_clarify_subid_delegation
%patch57 -p1 -b .libsubid_make_logfd_not_extern
%patch58 -p1 -b .yescrypt
iconv -f ISO88591 -t utf-8 doc/HOWTO > doc/HOWTO.utf8
cp -f doc/HOWTO.utf8 doc/HOWTO
@ -203,6 +206,7 @@ autoreconf
--enable-man \
--with-audit \
--with-sha-crypt \
--with-yescrypt \
--with-selinux \
--without-libcrack \
--without-libpam \
@ -345,6 +349,9 @@ rm -f $RPM_BUILD_ROOT/%{_libdir}/libsubid.la
%{_libdir}/libsubid.so
%changelog
* Mon Jun 21 2021 Björn Esser <besser82@fedoraproject.org> - 2:4.8.1-12
- Backport support for yescrypt hash method
* Mon Jun 21 2021 Iker Pedrosa <ipedrosa@redhat.com> - 2:4.8.1-11
- libsubid: don't print error messages on stderr by default
- libsubid: libsubid_init return false if out of memory