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-rw-r--r--src/pso/PSOV3Encryption.cpp77
1 files changed, 77 insertions, 0 deletions
diff --git a/src/pso/PSOV3Encryption.cpp b/src/pso/PSOV3Encryption.cpp
new file mode 100644
index 0000000..465249e
--- /dev/null
+++ b/src/pso/PSOV3Encryption.cpp
@@ -0,0 +1,77 @@
+#include <global_types.h>
+#include <string.h>
+#include "pso/macros.h"
+#include "pso/PSOV3Encryption.h"
+#include "pso/TArray.h"
+
+u32 PSOV3Encryption::next() {
+ if (++m_buffer_start == m_buffer_end) {
+ update_stream();
+ }
+ return *m_buffer_start;
+}
+
+void PSOV3Encryption::update_stream() {
+ u32 *ptr;
+ u32 *first_end;
+ u32 *start;
+
+ start = m_buffer.start();
+ m_buffer_start = m_buffer.start();
+
+ for (ptr = m_buffer.start(), first_end = &ptr[489]; first_end != m_buffer_end;) {
+ *ptr++ ^= *first_end++;
+ }
+
+ for (u32 *p = ptr; p != m_buffer_end; *p++ ^= *start++);
+}
+
+void PSOV3Encryption::encrypt(u32 seed) {
+ const size_t size = m_buffer.size();
+ u32 thing;
+ m_buffer_end = &m_buffer[size];
+ m_buffer_start = m_buffer.start();
+ u32 value = 0;
+ for (int i = 0; i <= 16; ++i, *m_buffer_start++ = value) {
+ for (int j = 32; j; --j) {
+ seed *= 0x5d588b65;
+ value = (++seed & (1 << 31)) | (value >> 1);
+ }
+ }
+
+ //u32 *smth = &m_buffer[0];
+ //u32 *smth2 = &m_buffer[1];
+ --m_buffer_start;
+ thing = m_buffer[0xf];
+ *m_buffer_start = (m_buffer[0] >> 9) ^ (*m_buffer_start << 23) ^ thing;
+ //u32 *buf_val = &m_buffer[0];
+ //u32 *next_buf_val = &m_buffer[1];
+
+ for (u32 *buf_val = &m_buffer[0], *next_buf_val = &m_buffer[1], *buf = m_buffer_start++; m_buffer_start != m_buffer_end;) {
+ *m_buffer_start++ = (*buf_val++ << 23) ^ (*next_buf_val++ >> 9) ^ *buf++;
+ }
+
+ update_stream();
+ update_stream();
+ update_stream();
+ m_buffer_start = m_buffer.end();
+}
+
+PSOV3Encryption::~PSOV3Encryption() {
+ m_buffer.fill(0);
+ m_buffer_start = nullptr;
+ m_buffer_end = nullptr;
+}
+
+PSOV3Encryption::PSOV3Encryption() : PSOEncryption() {
+ encrypt(0);
+}
+
+
+PSOEncryption::~PSOEncryption() {
+
+}
+
+PSOEncryption::PSOEncryption() {
+
+}