1 files changed, 30 insertions, 0 deletions
diff --git a/src/libstdcrypto/md5_final.c b/src/libstdcrypto/md5_final.c
new file mode 100644
index 0000000..834d57c
--- /dev/null
+++ b/src/libstdcrypto/md5_final.c
@@ -0,0 +1,30 @@
+/* ISC license. */
+
+#include <skalibs/uint32.h>
+#include <skalibs/bytestr.h>
+#include <skalibs/md5.h>
+#include "md5-internal.h"
+
+void md5_final (MD5Schedule_ref ctx, char *digest /* 16 chars */)
+{
+  register unsigned int count = (ctx->bits[0] >> 3) & 0x3F ;
+  register unsigned char *p = ctx->in + count ;
+  *p++ = 0x80;
+  count = 63 - count ;
+  if (count < 8)
+  {
+    byte_zero(p, count) ;
+    uint32_little_endian((char *)ctx->in, 16) ;
+    md5_transform(ctx->buf, (uint32 *)ctx->in) ;
+    byte_zero(ctx->in, 56) ;
+  }
+  else byte_zero(p, count - 8) ;
+  uint32_little_endian((char *)ctx->in, 14) ;
+
+  byte_copy(ctx->in + 56, 4, (char *)&ctx->bits[0]) ;
+  byte_copy(ctx->in + 60, 4, (char *)&ctx->bits[1]) ;
+
+  md5_transform(ctx->buf, (uint32 *)ctx->in) ;
+  uint32_little_endian((char *)ctx->buf, 4) ;
+  byte_copy(digest, 16, (char *)ctx->buf) ;
+}