Renamed sha1 functions to avoid naming clashes

src/tools/p_sha1.h

@@ -0,0 +1,31 @@
+/* public api for steve reid's public domain SHA-1 implementation */
+/* this file is in the public domain */
+
+/** @file
+ *  SHA-1 hash API.
+ */
+
+#ifndef __P_SHA1_H
+#define __P_SHA1_H
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+typedef struct {
+    uint32_t state[5];
+    uint32_t count[2];
+    uint8_t  buffer[64];
+} P_SHA1_CTX;
+
+#define P_SHA1_DIGEST_SIZE 20
+
+void P_SHA1_Init(P_SHA1_CTX* context);
+void P_SHA1_Update(P_SHA1_CTX* context, const uint8_t* data, const size_t len);
+void P_SHA1_Final(P_SHA1_CTX* context, uint8_t digest[P_SHA1_DIGEST_SIZE]);
+
+#ifdef __cplusplus
+}
+#endif
+
+#endif /* __P_SHA1_H */