diff --git a/src/scram.c b/src/scram.c
index d1850ad..5066d60 100644
--- a/src/scram.c
+++ b/src/scram.c
@@ -33,15 +33,6 @@
 static const uint8_t ipad = 0x36;
 static const uint8_t opad = 0x5C;
 
-static void SHA1(const uint8_t* data, size_t len,
-                 uint8_t * digest)
-{
-    SHA1_CTX ctx;
-    SHA1_Init(&ctx);
-    SHA1_Update(&ctx, data, len);
-    SHA1_Final(&ctx, digest);
-}
-
 static void HMAC_SHA1(const uint8_t *key, size_t key_len,
                       const uint8_t *text, size_t len,
                       uint8_t *digest)
diff --git a/src/sha1.c b/src/sha1.c
index cc84df8..0dd3d76 100644
--- a/src/sha1.c
+++ b/src/sha1.c
@@ -244,7 +244,7 @@ void SHA1_Update(SHA1_CTX* context, const uint8_t* data, const size_t len)
 
 
 /* Add padding and return the message digest. */
-void SHA1_Final(SHA1_CTX* context, uint8_t *digest)
+void SHA1_Final(SHA1_CTX* context, uint8_t* digest)
 {
     uint32_t i;
     uint8_t  finalcount[8];
@@ -274,7 +274,15 @@ void SHA1_Final(SHA1_CTX* context, uint8_t *digest)
     SHA1_Transform(context->state, context->buffer);
 #endif
 }
-  
+
+void SHA1(const uint8_t* data, size_t len, uint8_t* digest)
+{
+    SHA1_CTX ctx;
+    SHA1_Init(&ctx);
+    SHA1_Update(&ctx, data, len);
+    SHA1_Final(&ctx, digest);
+}
+
 /*************************************************************/
 
 #if 0
diff --git a/src/sha1.h b/src/sha1.h
index d0391ae..fc6fcbf 100644
--- a/src/sha1.h
+++ b/src/sha1.h
@@ -25,7 +25,8 @@ typedef struct {
 
 void SHA1_Init(SHA1_CTX* context);
 void SHA1_Update(SHA1_CTX* context, const uint8_t* data, const size_t len);
-void SHA1_Final(SHA1_CTX* context, uint8_t *digest);
+void SHA1_Final(SHA1_CTX* context, uint8_t* digest);
+void SHA1(const uint8_t* data, size_t len, uint8_t* digest);
 
 #ifdef __cplusplus
 }