From 2a94a49cefbe394c4472810368e92f27677f198c Mon Sep 17 00:00:00 2001
From: Steffen Jaeckel <s@jaeckel.eu>
Date: Tue, 8 Oct 2019 10:16:51 +0200
Subject: [PATCH] add required LibTomCrypt load/store functions

---
 src/sha.h | 112 ++++++++++++++++++++++++++++++++++++++++++++++++++++++
 1 file changed, 112 insertions(+)
 create mode 100644 src/sha.h

diff --git a/src/sha.h b/src/sha.h
new file mode 100644
index 0000000..3c4df08
--- /dev/null
+++ b/src/sha.h
@@ -0,0 +1,112 @@
+/* public api for steve reid's public domain SHA-1 implementation */
+/* this file is in the public domain */
+
+/** @file
+ *  SHA-1 hash API.
+ */
+
+#ifndef __LIBSTROPHE_SHA_H__
+#define __LIBSTROPHE_SHA_H__
+
+#include <string.h>
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+/* make sure the stdint.h types are available */
+#include "ostypes.h"
+
+#if defined(__BIG_ENDIAN__) ||                                   \
+    (defined(__BYTE_ORDER__) && defined(__ORDER_BIG_ENDIAN__) && \
+     __BYTE_ORDER__ == __ORDER_BIG_ENDIAN__)
+
+#define STORE32H(x, y)      \
+    do {                    \
+        uint32_t __t = (x); \
+        memcpy(y, &__t, 4); \
+    } while (0)
+
+#define LOAD32H(x, y)       \
+    do {                    \
+        memcpy(&(x), y, 4); \
+        x &= 0xFFFFFFFF;    \
+    } while (0)
+
+#define STORE64H(x, y)      \
+    do {                    \
+        uint64_t __t = (x); \
+        memcpy(y, &__t, 8); \
+    } while (0)
+
+#define LOAD64H(x, y)       \
+    do {                    \
+        memcpy(&(x), y, 8); \
+    } while (0)
+
+#elif defined(__LITTLE_ENDIAN__) ||                                 \
+    (defined(__BYTE_ORDER__) && defined(__ORDER_LITTLE_ENDIAN__) && \
+     __BYTE_ORDER__ == __ORDER_LITTLE_ENDIAN__)
+
+#define STORE32H(x, y)                         \
+    do {                                       \
+        (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);           \
+    } while (0)
+
+#define LOAD32H(x, y)                                                     \
+    do {                                                                  \
+        x = ((uint32_t)((y)[0] & 255) << 24) |                            \
+            ((uint32_t)((y)[1] & 255) << 16) |                            \
+            ((uint32_t)((y)[2] & 255) << 8) | ((uint32_t)((y)[3] & 255)); \
+    } while (0)
+
+#define STORE64H(x, y)                         \
+    do {                                       \
+        (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);           \
+    } while (0)
+
+#define LOAD64H(x, y)                                                         \
+    do {                                                                      \
+        x = (((uint64_t)((y)[0] & 255)) << 56) |                              \
+            (((uint64_t)((y)[1] & 255)) << 48) |                              \
+            (((uint64_t)((y)[2] & 255)) << 40) |                              \
+            (((uint64_t)((y)[3] & 255)) << 32) |                              \
+            (((uint64_t)((y)[4] & 255)) << 24) |                              \
+            (((uint64_t)((y)[5] & 255)) << 16) |                              \
+            (((uint64_t)((y)[6] & 255)) << 8) | (((uint64_t)((y)[7] & 255))); \
+    } while (0)
+
+#else
+#error Unknown endianness not supported
+#endif
+
+#ifdef _MSC_VER
+#define CONST64(n) n##ui64
+#else
+#define CONST64(n) n##ULL
+#endif
+
+#define RORc(x, y)                                           \
+    (((((uint32_t)(x)&0xFFFFFFFFUL) >> (uint32_t)((y)&31)) | \
+      ((uint32_t)(x) << (uint32_t)((32 - ((y)&31)) & 31))) & \
+     0xFFFFFFFFUL)
+#define ROR64c(x, y)                                                       \
+    (((((x)&CONST64(0xFFFFFFFFFFFFFFFF)) >> ((uint64_t)(y)&CONST64(63))) | \
+      ((x) << (((uint64_t)64 - ((y)&63)) & 63))) &                         \
+     CONST64(0xFFFFFFFFFFFFFFFF))
+
+#ifdef __cplusplus
+}
+#endif
+
+#endif /* __LIBSTROPHE_SHA_H__ */