Audit-clean C standard across all 5 cb challenges: fix 3 functions over 8 exec lines; rebuild bins; update CB-0x03 and CB-0x05 guides; verify all guides against new bins

0x001aa_cb/include/crypto.h

@@ -0,0 +1,26 @@
+/**
+ * @file crypto.h
+ * @brief Lightweight rolling cipher interface for Operation Iron Net
+ * @author Kevin Thomas
+ * @date 2026
+ *
+ * MIT License
+ * Copyright (c) 2026 Kevin Thomas
+ */
+
+#ifndef CRYPTO_H
+#define CRYPTO_H
+
+#include <stdint.h>
+#include <stddef.h>
+
+#define TOKEN_LEN 8
+
+/**
+ * @brief Decrypt the rolling strike authorization token into a buffer.
+ * @param dest Pointer to buffer receiving the decrypted token bytes.
+ * @return void No return value.
+ */
+void decrypt_auth_token(uint8_t *dest);
+
+#endif /* CRYPTO_H */