1 files changed, 63 insertions, 0 deletions
diff --git a/libs/assimp/contrib/unzip/crypt.h b/libs/assimp/contrib/unzip/crypt.h
new file mode 100644
index 0000000..78146eb
--- /dev/null
+++ b/libs/assimp/contrib/unzip/crypt.h
@@ -0,0 +1,63 @@
+/* crypt.h -- base code for traditional PKWARE encryption
+   Version 1.01e, February 12th, 2005
+
+   Copyright (C) 1998-2005 Gilles Vollant
+   Modifications for Info-ZIP crypting
+     Copyright (C) 2003 Terry Thorsen
+
+   This code is a modified version of crypting code in Info-ZIP distribution
+
+   Copyright (C) 1990-2000 Info-ZIP.  All rights reserved.
+
+   This program is distributed under the terms of the same license as zlib.
+   See the accompanying LICENSE file for the full text of the license.
+*/
+
+#ifndef _MINICRYPT_H
+#define _MINICRYPT_H
+
+#if ZLIB_VERNUM < 0x1270
+#if !defined(Z_U4)
+typedef unsigned long z_crc_t;
+#endif
+#endif
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+#define RAND_HEAD_LEN  12
+
+/***************************************************************************/
+
+#define zdecode(pkeys,pcrc_32_tab,c) \
+    (update_keys(pkeys,pcrc_32_tab, c ^= decrypt_byte(pkeys)))
+
+#define zencode(pkeys,pcrc_32_tab,c,t) \
+    (t = decrypt_byte(pkeys), update_keys(pkeys,pcrc_32_tab,c), t^(c))
+
+/***************************************************************************/
+
+/* Return the next byte in the pseudo-random sequence */
+uint8_t decrypt_byte(uint32_t *pkeys);
+
+/* Update the encryption keys with the next byte of plain text */
+uint8_t update_keys(uint32_t *pkeys, const z_crc_t *pcrc_32_tab, int32_t c);
+
+/* Initialize the encryption keys and the random header according to the given password. */
+void init_keys(const char *passwd, uint32_t *pkeys, const z_crc_t *pcrc_32_tab);
+
+/* Generate cryptographically secure random numbers */
+int cryptrand(unsigned char *buf, unsigned int len);
+
+/* Create encryption header */
+int crypthead(const char *passwd, uint8_t *buf, int buf_size, uint32_t *pkeys, 
+    const z_crc_t *pcrc_32_tab, uint8_t verify1, uint8_t verify2);
+
+/***************************************************************************/
+
+#ifdef __cplusplus
+}
+#endif
+
+#endif