- Updated for migration to size_t

diff --git a/tests/suites/test_suite_pkcs1_v21.function b/tests/suites/test_suite_pkcs1_v21.function
index 8885e8b..aa85f75 100644
--- a/tests/suites/test_suite_pkcs1_v21.function
+++ b/tests/suites/test_suite_pkcs1_v21.function
@@ -17,7 +17,7 @@
     unsigned char output_str[1000];
     unsigned char rnd_buf[1000];
     rsa_context ctx;
-    int msg_len;
+    size_t msg_len;
     rnd_buf_info info;
 
     info.length = unhexify( rnd_buf, {seed} );
@@ -55,8 +55,8 @@
     unsigned char output_str[1000];
     rsa_context ctx;
     mpi P1, Q1, H, G;
-    int output_len;
-    int msg_len;
+    size_t output_len;
+    size_t msg_len;
 
     mpi_init( &P1, &Q1, &H, &G, NULL );
     rsa_init( &ctx, RSA_PKCS_V21, {hash} );
@@ -104,7 +104,7 @@
     unsigned char rnd_buf[1000];
     rsa_context ctx;
     mpi P1, Q1, H, G;
-    int msg_len;
+    size_t msg_len;
     rnd_buf_info info;
 
     info.length = unhexify( rnd_buf, {salt} );
@@ -195,7 +195,7 @@
     unsigned char hash_result[1000];
     unsigned char result_str[1000];
     rsa_context ctx;
-    int msg_len;
+    size_t msg_len;
 
     rsa_init( &ctx, RSA_PKCS_V21, {hash} );
     memset( message_str, 0x00, 1000 );