util: import sha1 implementation from OpenBSD

[mesa.git] / src / util / sha1 / sha1.h

diff --git a/src/util/sha1/sha1.h b/src/util/sha1/sha1.h
new file mode 100644 (file)
index 0000000..de07e1a
--- /dev/null
+++ b/src/util/sha1/sha1.h
@@ -0,0 +1,54 @@
+/*     $OpenBSD: sha1.h,v 1.24 2012/12/05 23:19:57 deraadt Exp $       */
+
+/*
+ * SHA-1 in C
+ * By Steve Reid <steve@edmweb.com>
+ * 100% Public Domain
+ */
+
+#ifndef _SHA1_H
+#define _SHA1_H
+
+#include <stddef.h>
+#include <stdint.h>
+
+#define        SHA1_BLOCK_LENGTH               64
+#define        SHA1_DIGEST_LENGTH              20
+#define        SHA1_DIGEST_STRING_LENGTH       (SHA1_DIGEST_LENGTH * 2 + 1)
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+typedef struct {
+    uint32_t state[5];
+    uint64_t count;
+    uint8_t buffer[SHA1_BLOCK_LENGTH];
+} SHA1_CTX;
+
+void SHA1Init(SHA1_CTX *);
+void SHA1Pad(SHA1_CTX *);
+void SHA1Transform(uint32_t [5], const uint8_t [SHA1_BLOCK_LENGTH]);
+void SHA1Update(SHA1_CTX *, const uint8_t *, size_t);
+void SHA1Final(uint8_t [SHA1_DIGEST_LENGTH], SHA1_CTX *);
+__END_DECLS
+
+#define HTONDIGEST(x) do {                                              \
+        x[0] = htonl(x[0]);                                             \
+        x[1] = htonl(x[1]);                                             \
+        x[2] = htonl(x[2]);                                             \
+        x[3] = htonl(x[3]);                                             \
+        x[4] = htonl(x[4]); } while (0)
+
+#define NTOHDIGEST(x) do {                                              \
+        x[0] = ntohl(x[0]);                                             \
+        x[1] = ntohl(x[1]);                                             \
+        x[2] = ntohl(x[2]);                                             \
+        x[3] = ntohl(x[3]);                                             \
+        x[4] = ntohl(x[4]); } while (0)
+
+#ifdef __cplusplus
+}
+#endif
+
+#endif /* _SHA1_H */