Using MD5 and SHA1 built into OpenSSL.

src/core/ngx_sha1.h

@@ -12,17 +12,13 @@
 #include <ngx_config.h>
 #include <ngx_core.h>
 
+#include <openssl/sha.h>
 
-typedef struct {
-    uint64_t  bytes;
-    uint32_t  a, b, c, d, e, f;
-    u_char    buffer[64];
-} ngx_sha1_t;
+typedef SHA_CTX  ngx_sha1_t;
 
-
-void ngx_sha1_init(ngx_sha1_t *ctx);
-void ngx_sha1_update(ngx_sha1_t *ctx, const void *data, size_t size);
-void ngx_sha1_final(u_char result[20], ngx_sha1_t *ctx);
+#define ngx_sha1_init    SHA1_Init
+#define ngx_sha1_update  SHA1_Update
+#define ngx_sha1_final   SHA1_Final
 
 
 #endif /* _NGX_SHA1_H_INCLUDED_ */