fixed sequence numbering and iv of TLS protection layer

diff --git a/src/libtls/tls_protection.c b/src/libtls/tls_protection.c
index 5ea0a83..51a4808 100644 (file)
--- a/src/libtls/tls_protection.c
+++ b/src/libtls/tls_protection.c
@@ -241,8 +241,8 @@ METHOD(tls_protection_t, build, status_t,
 
                                if (this->iv_out.len)
                                {       /* next record IV is last ciphertext block of this record */
-                                       memcpy(this->iv_out.ptr, data->ptr - this->iv_out.len,
-                                                  this->iv_out.len);
+                                       memcpy(this->iv_out.ptr, data->ptr + data->len -
+                                                  this->iv_out.len, this->iv_out.len);
                                }
                                else
                                {       /* prepend IV */
@@ -254,8 +254,8 @@ METHOD(tls_protection_t, build, status_t,
                                *data = chunk_cat("mm", *data, mac);
                        }
                }
+               this->seq_out++;
        }
-       this->seq_out++;
        return status;
 }