Using MD5 and SHA1 built into OpenSSL.

src/core/ngx_md5.h

@@ -12,17 +12,13 @@
 #include <ngx_config.h>
 #include <ngx_core.h>
 
+#include <openssl/md5.h>
 
-typedef struct {
-    uint64_t  bytes;
-    uint32_t  a, b, c, d;
-    u_char    buffer[64];
-} ngx_md5_t;
+typedef MD5_CTX  ngx_md5_t;
 
-
-void ngx_md5_init(ngx_md5_t *ctx);
-void ngx_md5_update(ngx_md5_t *ctx, const void *data, size_t size);
-void ngx_md5_final(u_char result[16], ngx_md5_t *ctx);
+#define ngx_md5_init    MD5_Init
+#define ngx_md5_update  MD5_Update
+#define ngx_md5_final   MD5_Final
 
 
 #endif /* _NGX_MD5_H_INCLUDED_ */