diff --git a/lib/Makemodule.am b/lib/Makemodule.am
index 5e21d6e2..3c503d14 100644
--- a/lib/Makemodule.am
+++ b/lib/Makemodule.am
@@ -50,6 +50,7 @@ libcryptsetup_la_SOURCES = \
 	lib/bitops.h			\
 	lib/nls.h			\
 	lib/libcryptsetup.h		\
+	lib/libcryptsetup_macros.h	\
 	lib/utils.c			\
 	lib/utils_benchmark.c		\
 	lib/utils_crypt.c		\
diff --git a/lib/internal.h b/lib/internal.h
index 10066ae3..f50c4a19 100644
--- a/lib/internal.h
+++ b/lib/internal.h
@@ -46,38 +46,13 @@
 
 #include "libcryptsetup.h"
 
-/* to silent gcc -Wcast-qual for const cast */
-#define CONST_CAST(x) (x)(uintptr_t)
+#include "libcryptsetup_macros.h"
 
-#define SHIFT_4K		12
-#define SECTOR_SHIFT		9
-#define SECTOR_SIZE		(1 << SECTOR_SHIFT)
-#define MAX_SECTOR_SIZE		4096 /* min page size among all platforms */
-#define DEFAULT_DISK_ALIGNMENT	1048576 /* 1MiB */
-#define DEFAULT_MEM_ALIGNMENT	4096
 #define LOG_MAX_LEN		4096
 #define MAX_DM_DEPS		32
 
 #define CRYPT_SUBDEV           "SUBDEV" /* prefix for sublayered devices underneath public crypt types */
 
-#define at_least(a, b) ({ __typeof__(a) __at_least = (a); (__at_least >= (b))?__at_least:(b); })
-
-#define MISALIGNED(a, b)	((a) & ((b) - 1))
-#define MISALIGNED_4K(a)	MISALIGNED((a), 1 << SHIFT_4K)
-#define MISALIGNED_512(a)	MISALIGNED((a), 1 << SECTOR_SHIFT)
-#define NOTPOW2(a)		MISALIGNED((a), (a))
-
-#ifndef ARRAY_SIZE
-# define ARRAY_SIZE(arr) (sizeof(arr) / sizeof((arr)[0]))
-#endif
-
-#define MOVE_REF(x, y) \
-	do { \
-		__typeof__(x) *_px = &(x), *_py = &(y); \
-		*_px = *_py; \
-		*_py = NULL; \
-	} while (0)
-
 #ifndef O_CLOEXEC
 #define O_CLOEXEC 0
 #endif
diff --git a/lib/libcryptsetup_macros.h b/lib/libcryptsetup_macros.h
new file mode 100644
index 00000000..6b7f02dc
--- /dev/null
+++ b/lib/libcryptsetup_macros.h
@@ -0,0 +1,59 @@
+/*
+ * Definitions of common constant and generic macros fo libcryptsetup
+ *
+ * Copyright (C) 2009-2021 Red Hat, Inc. All rights reserved.
+ * Copyright (C) 2009-2021 Milan Broz
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License
+ * as published by the Free Software Foundation; either version 2
+ * of the License, or (at your option) any later version.
+ *
+ * This program 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 General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
+ */
+
+#ifndef _LIBCRYPTSETUP_MACROS_H
+#define _LIBCRYPTSETUP_MACROS_H
+
+/* to silent gcc -Wcast-qual for const cast */
+#define CONST_CAST(x) (x)(uintptr_t)
+
+#define UNUSED(x) (void)(x)
+
+#ifndef ARRAY_SIZE
+# define ARRAY_SIZE(arr) (sizeof(arr) / sizeof((arr)[0]))
+#endif
+
+#define MOVE_REF(x, y) \
+	do { \
+		__typeof__(x) *_px = &(x), *_py = &(y); \
+		*_px = *_py; \
+		*_py = NULL; \
+	} while (0)
+
+#define FREE_AND_NULL(x) do { free(x); x = NULL; } while (0)
+
+#define AT_LEAST(a, b) ({ __typeof__(a) __at_least = (a); (__at_least >= (b))?__at_least:(b); })
+
+#define SHIFT_4K          12
+#define SECTOR_SHIFT       9
+#define SECTOR_SIZE     (1 << SECTOR_SHIFT)
+#define MAX_SECTOR_SIZE 4096 /* min page size among all platforms */
+#define ROUND_SECTOR(x) (((x) + SECTOR_SIZE - 1) / SECTOR_SIZE)
+
+#define MISALIGNED(a, b)	((a) & ((b) - 1))
+#define MISALIGNED_4K(a)	MISALIGNED((a), 1 << SHIFT_4K)
+#define MISALIGNED_512(a)	MISALIGNED((a), 1 << SECTOR_SHIFT)
+#define NOTPOW2(a)		MISALIGNED((a), (a))
+
+#define DEFAULT_DISK_ALIGNMENT	1048576 /* 1MiB */
+#define DEFAULT_MEM_ALIGNMENT	4096
+
+#endif /* _LIBCRYPTSETUP_MACROS_H */
diff --git a/lib/luks1/keymanage.c b/lib/luks1/keymanage.c
index b6575841..3f07595a 100644
--- a/lib/luks1/keymanage.c
+++ b/lib/luks1/keymanage.c
@@ -800,7 +800,7 @@ int LUKS_generate_phdr(struct luks_phdr *header,
 
 	if (PBKDF2_temp > (double)UINT32_MAX)
 		return -EINVAL;
-	header->mkDigestIterations = at_least((uint32_t)PBKDF2_temp, LUKS_MKD_ITERATIONS_MIN);
+	header->mkDigestIterations = AT_LEAST((uint32_t)PBKDF2_temp, LUKS_MKD_ITERATIONS_MIN);
 	assert(header->mkDigestIterations);
 
 	r = crypt_pbkdf(CRYPT_KDF_PBKDF2, header->hashSpec, vk->key,vk->keylength,
@@ -874,7 +874,7 @@ int LUKS_set_key(unsigned int keyIndex,
 	 * Final iteration count is at least LUKS_SLOT_ITERATIONS_MIN
 	 */
 	hdr->keyblock[keyIndex].passwordIterations =
-		at_least(pbkdf->iterations, LUKS_SLOT_ITERATIONS_MIN);
+		AT_LEAST(pbkdf->iterations, LUKS_SLOT_ITERATIONS_MIN);
 	log_dbg(ctx, "Key slot %d use %" PRIu32 " password iterations.", keyIndex,
 		hdr->keyblock[keyIndex].passwordIterations);
 
diff --git a/lib/luks2/luks2_internal.h b/lib/luks2/luks2_internal.h
index 0095e1c2..86716499 100644
--- a/lib/luks2/luks2_internal.h
+++ b/lib/luks2/luks2_internal.h
@@ -30,8 +30,6 @@
 #include "base64.h"
 #include "luks2.h"
 
-#define UNUSED(x) (void)(x)
-
 /* override useless forward slash escape when supported by json-c */
 #ifndef JSON_C_TO_STRING_NOSLASHESCAPE
 #define JSON_C_TO_STRING_NOSLASHESCAPE 0
diff --git a/lib/utils_benchmark.c b/lib/utils_benchmark.c
index 6b2efdcd..7a9736d8 100644
--- a/lib/utils_benchmark.c
+++ b/lib/utils_benchmark.c
@@ -196,7 +196,7 @@ int crypt_benchmark_pbkdf_internal(struct crypt_device *cd,
 		PBKDF2_tmp = ((double)pbkdf->iterations * pbkdf->time_ms / 1000.);
 		if (PBKDF2_tmp > (double)UINT32_MAX)
 			return -EINVAL;
-		pbkdf->iterations = at_least((uint32_t)PBKDF2_tmp, pbkdf_limits.min_iterations);
+		pbkdf->iterations = AT_LEAST((uint32_t)PBKDF2_tmp, pbkdf_limits.min_iterations);
 	} else {
 		/* Already benchmarked */
 		if (pbkdf->iterations) {
diff --git a/src/cryptsetup.h b/src/cryptsetup.h
index b229de7f..24956c81 100644
--- a/src/cryptsetup.h
+++ b/src/cryptsetup.h
@@ -46,22 +46,15 @@
 #include "lib/utils_fips.h"
 #include "lib/utils_io.h"
 #include "lib/utils_blkid.h"
+#include "lib/libcryptsetup_macros.h"
 
 #include "libcryptsetup.h"
 
-#define CONST_CAST(x) (x)(uintptr_t)
 #define DEFAULT_CIPHER(type)	(DEFAULT_##type##_CIPHER "-" DEFAULT_##type##_MODE)
-#define SECTOR_SIZE 512
-#define MAX_SECTOR_SIZE 4096
-#define ROUND_SECTOR(x) (((x) + SECTOR_SIZE - 1) / SECTOR_SIZE)
 
 #define DEFAULT_WIPE_BLOCK	1048576 /* 1 MiB */
 #define MAX_ACTIONS 16
 
-#ifndef ARRAY_SIZE
-# define ARRAY_SIZE(arr) (sizeof(arr) / sizeof((arr)[0]))
-#endif
-
 /* Common tools */
 void tool_log(int level, const char *msg, void *usrptr __attribute__((unused)));
 void quiet_log(int level, const char *msg, void *usrptr);
@@ -123,8 +116,6 @@ int tools_lookup_crypt_device(struct crypt_device *cd, const char *type,
 /* each utility is required to implement it */
 void tools_cleanup(void);
 
-#define FREE_AND_NULL(x) do { free(x); x = NULL; } while (0)
-
 /* Log */
 #define log_dbg(x...) crypt_logf(NULL, CRYPT_LOG_DEBUG, x)
 #define log_std(x...) crypt_logf(NULL, CRYPT_LOG_NORMAL, x)