aboutsummaryrefslogtreecommitdiff
path: root/thirdparty/crypto/siphash.h
diff options
context:
space:
mode:
Diffstat (limited to 'thirdparty/crypto/siphash.h')
-rw-r--r--thirdparty/crypto/siphash.h50
1 files changed, 50 insertions, 0 deletions
diff --git a/thirdparty/crypto/siphash.h b/thirdparty/crypto/siphash.h
new file mode 100644
index 00000000..0d0767fc
--- /dev/null
+++ b/thirdparty/crypto/siphash.h
@@ -0,0 +1,50 @@
+/*
+ * Copyright 2017-2021 The OpenSSL Project Authors. All Rights Reserved.
+ *
+ * Licensed under the Apache License 2.0 (the "License"). You may not use
+ * this file except in compliance with the License. You can obtain a copy
+ * in the file LICENSE in the source distribution or at
+ * https://www.openssl.org/source/license.html
+ */
+
+#ifndef OSSL_CRYPTO_SIPHASH_H
+# define OSSL_CRYPTO_SIPHASH_H
+# pragma once
+
+# include <stddef.h>
+
+# define SIPHASH_BLOCK_SIZE 8
+# define SIPHASH_KEY_SIZE 16
+# define SIPHASH_MIN_DIGEST_SIZE 8
+# define SIPHASH_MAX_DIGEST_SIZE 16
+
+typedef struct siphash_st SIPHASH;
+
+size_t SipHash_ctx_size(void);
+size_t SipHash_hash_size(SIPHASH *ctx);
+int SipHash_set_hash_size(SIPHASH *ctx, size_t hash_size);
+int SipHash_Init(SIPHASH *ctx, const unsigned char *k,
+ int crounds, int drounds);
+void SipHash_Update(SIPHASH *ctx, const unsigned char *in, size_t inlen);
+int SipHash_Final(SIPHASH *ctx, unsigned char *out, size_t outlen);
+
+/* Based on https://131002.net/siphash C reference implementation */
+
+struct siphash_st {
+ uint64_t total_inlen;
+ uint64_t v0;
+ uint64_t v1;
+ uint64_t v2;
+ uint64_t v3;
+ unsigned int len;
+ unsigned int hash_size;
+ unsigned int crounds;
+ unsigned int drounds;
+ unsigned char leavings[SIPHASH_BLOCK_SIZE];
+};
+
+/* default: SipHash-2-4 */
+# define SIPHASH_C_ROUNDS 2
+# define SIPHASH_D_ROUNDS 4
+
+#endif