diff --git a/library/sha1.c b/library/sha1.c
index 72ca063..cda40b4 100644
--- a/library/sha1.c
+++ b/library/sha1.c
@@ -76,7 +76,7 @@
     ctx->state[4] = 0xC3D2E1F0;
 }
 
-static void sha1_process( sha1_context *ctx, const unsigned char data[64] )
+void sha1_process( sha1_context *ctx, const unsigned char data[64] )
 {
     unsigned long temp, W[16], A, B, C, D, E;