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authorDaniel Baumann <daniel.baumann@progress-linux.org>2024-04-07 15:35:18 +0000
committerDaniel Baumann <daniel.baumann@progress-linux.org>2024-04-07 15:35:18 +0000
commitb750101eb236130cf056c675997decbac904cc49 (patch)
treea5df1a06754bdd014cb975c051c83b01c9a97532 /src/basic/siphash24.h
parentInitial commit. (diff)
downloadsystemd-b750101eb236130cf056c675997decbac904cc49.tar.xz
systemd-b750101eb236130cf056c675997decbac904cc49.zip
Adding upstream version 252.22.upstream/252.22
Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>
Diffstat (limited to '')
-rw-r--r--src/basic/siphash24.h53
1 files changed, 53 insertions, 0 deletions
diff --git a/src/basic/siphash24.h b/src/basic/siphash24.h
new file mode 100644
index 0000000..0b3e845
--- /dev/null
+++ b/src/basic/siphash24.h
@@ -0,0 +1,53 @@
+/* SPDX-License-Identifier: CC0-1.0 */
+
+#pragma once
+
+#include <inttypes.h>
+#include <stddef.h>
+#include <stdint.h>
+#include <sys/types.h>
+
+#include "string-util.h"
+#include "time-util.h"
+
+struct siphash {
+ uint64_t v0;
+ uint64_t v1;
+ uint64_t v2;
+ uint64_t v3;
+ uint64_t padding;
+ size_t inlen;
+};
+
+void siphash24_init(struct siphash *state, const uint8_t k[static 16]);
+void siphash24_compress(const void *in, size_t inlen, struct siphash *state);
+#define siphash24_compress_byte(byte, state) siphash24_compress((const uint8_t[]) { (byte) }, 1, (state))
+
+static inline void siphash24_compress_boolean(bool in, struct siphash *state) {
+ uint8_t i = in;
+
+ siphash24_compress(&i, sizeof i, state);
+}
+
+static inline void siphash24_compress_usec_t(usec_t in, struct siphash *state) {
+ siphash24_compress(&in, sizeof in, state);
+}
+
+static inline void siphash24_compress_safe(const void *in, size_t inlen, struct siphash *state) {
+ if (inlen == 0)
+ return;
+
+ siphash24_compress(in, inlen, state);
+}
+
+static inline void siphash24_compress_string(const char *in, struct siphash *state) {
+ siphash24_compress_safe(in, strlen_ptr(in), state);
+}
+
+uint64_t siphash24_finalize(struct siphash *state);
+
+uint64_t siphash24(const void *in, size_t inlen, const uint8_t k[static 16]);
+
+static inline uint64_t siphash24_string(const char *s, const uint8_t k[static 16]) {
+ return siphash24(s, strlen(s) + 1, k);
+}