1 files changed, 17 insertions, 0 deletions
diff --git a/libqpdf/qpdf/rijndael.h b/libqpdf/qpdf/rijndael.h
new file mode 100644
index 00000000..9394a5b8
--- /dev/null
+++ b/libqpdf/qpdf/rijndael.h
@@ -0,0 +1,17 @@
+#ifndef H__RIJNDAEL
+#define H__RIJNDAEL
+
+int rijndaelSetupEncrypt(unsigned long *rk, const unsigned char *key,
+  int keybits);
+int rijndaelSetupDecrypt(unsigned long *rk, const unsigned char *key,
+  int keybits);
+void rijndaelEncrypt(const unsigned long *rk, int nrounds,
+  const unsigned char plaintext[16], unsigned char ciphertext[16]);
+void rijndaelDecrypt(const unsigned long *rk, int nrounds,
+  const unsigned char ciphertext[16], unsigned char plaintext[16]);
+
+#define KEYLENGTH(keybits) ((keybits)/8)
+#define RKLENGTH(keybits)  ((keybits)/8+28)
+#define NROUNDS(keybits)   ((keybits)/32+6)
+
+#endif