for the CI to run with a faster snow3g implementation

should be better, is not on my setup, let's see what ci says
(don't review this, this is for testing, will be removed/reworked)

CMakeLists.txt

@@ -1245,6 +1245,7 @@ set(NR_PDCP_SRC
   ${OPENAIR2_DIR}/LAYER2/nr_pdcp/nr_pdcp_security_nea1.c
   ${OPENAIR2_DIR}/LAYER2/nr_pdcp/nr_pdcp_integrity_nia2.c
   ${OPENAIR2_DIR}/LAYER2/nr_pdcp/nr_pdcp_integrity_nia1.c
+  ${OPENAIR2_DIR}/LAYER2/nr_pdcp/snow3g.c
   ${OPENAIR2_DIR}/LAYER2/nr_pdcp/asn1_utils.c
   openair2/LAYER2/nr_pdcp/cucp_cuup_handler.c
   openair2/LAYER2/nr_pdcp/cuup_cucp_if.c

openair2/LAYER2/nr_pdcp/nr_pdcp_entity.c

@@ -300,6 +300,8 @@ static int nr_pdcp_entity_process_sdu(nr_pdcp_entity_t *entity,
   entity->stats.txpdu_bytes += header_size + size + integrity_size;
   entity->stats.txpdu_sn = sn;
 
+//usleep(100);
+
   return header_size + size + integrity_size;
 }
 

openair2/LAYER2/nr_pdcp/nr_pdcp_integrity_nia1.c

@@ -28,6 +28,8 @@
 #include "openair3/SECU/secu_defs.h"
 #include "openair3/SECU/key_nas_deriver.h"
 
+#include "snow3g.h"
+
 stream_security_context_t *nr_pdcp_integrity_nia1_init(unsigned char *integrity_key)
 {
   nas_stream_cipher_t *ret;
@@ -46,6 +48,9 @@ void nr_pdcp_integrity_nia1_integrity(stream_security_context_t *integrity_conte
 {
   nas_stream_cipher_t *ctx = (nas_stream_cipher_t *)integrity_context;
 
+  snow3g_integrity(count, bearer - 1, direction, (uint8_t *)ctx->context, length, buffer, out);
+  return;
+
   ctx->message = buffer;
   ctx->count = count;
   ctx->bearer = bearer-1;

openair2/LAYER2/nr_pdcp/nr_pdcp_security_nea1.c

@@ -26,6 +26,8 @@
 
 #include "assertions.h"
 
+#include "snow3g.h"
+
 stream_security_context_t *nr_pdcp_security_nea1_init(unsigned char *ciphering_key)
 {
   nas_stream_cipher_t *ret;
@@ -48,6 +50,9 @@ void nr_pdcp_security_nea1_cipher(stream_security_context_t *security_context,
 {
   nas_stream_cipher_t *ctx = (nas_stream_cipher_t *)security_context;
 
+  snow3g_ciphering(count, bearer - 1, direction, (uint8_t *)ctx->context, length, buffer, buffer);
+  return;
+
   ctx->message = buffer;
   ctx->count = count;
   ctx->bearer = bearer - 1;

openair2/LAYER2/nr_pdcp/snow3g.h

+#ifndef _SNOW3G_H_
+#define _SNOW3G_H_
+
+#include <stdint.h>
+
+typedef struct {
+  uint32_t s[16];
+  uint32_t r1, r2, r3;
+  uint32_t zt;
+  int zt_size;
+} snow3g_t;
+
+void snow3g_init(snow3g_t *s, char *k, char *iv);
+uint8_t snow3g_get_next_keystream_byte(snow3g_t *s);
+void snow3g_ciphering(uint32_t count, int bearer, int direction, uint8_t *key, int length, uint8_t *in, uint8_t *out);
+void snow3g_integrity(uint32_t count, int bearer, int direction, uint8_t *key, int length, uint8_t *in, uint8_t *out);
+
+#endif /* _SNOW3G_H_ */