diff --git a/openaes/test/test_encrypt.c b/openaes/test/test_encrypt.c
new file mode 100644
index 0000000..b229f2d
--- /dev/null
+++ b/openaes/test/test_encrypt.c
@@ -0,0 +1,229 @@
+/* 
+ * ---------------------------------------------------------------------------
+ * OpenAES License
+ * ---------------------------------------------------------------------------
+ * Copyright (c) 2012, Nabil S. Al Ramli, www.nalramli.com
+ * All rights reserved.
+ * 
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions are met:
+ * 
+ *   - Redistributions of source code must retain the above copyright notice,
+ *     this list of conditions and the following disclaimer.
+ *   - Redistributions in binary form must reproduce the above copyright
+ *     notice, this list of conditions and the following disclaimer in the
+ *     documentation and/or other materials provided with the distribution.
+ * 
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
+ * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE
+ * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
+ * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
+ * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
+ * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
+ * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
+ * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
+ * POSSIBILITY OF SUCH DAMAGE.
+ * ---------------------------------------------------------------------------
+ */
+
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+
+#include "oaes_lib.h"
+
+void usage(const char * exe_name)
+{
+	if( NULL == exe_name )
+		return;
+	
+	printf(
+			"Usage:\n"
+			"\t%s [-ecb] [-key < 128 | 192 | 256 >] <text>\n",
+			exe_name
+	);
+}
+
+int main(int argc, char** argv)
+{
+	size_t _i;
+	OAES_CTX * ctx = NULL;
+	uint8_t *_encbuf, *_decbuf;
+	size_t _encbuf_len, _decbuf_len, _buf_len;
+	char *_buf;
+	short _is_ecb = 0;
+	char * _text = NULL;
+	int _key_len = 128;
+	
+	if( argc < 2 )
+	{
+		usage( argv[0] );
+		return EXIT_FAILURE;
+	}
+
+	for( _i = 1; _i < argc; _i++ )
+	{
+		int _found = 0;
+		
+		if( 0 == strcmp( argv[_i], "-ecb" ) )
+		{
+			_found = 1;
+			_is_ecb = 1;
+		}
+		
+		if( 0 == strcmp( argv[_i], "-key" ) )
+		{
+			_found = 1;
+			_i++; // len
+			if( _i >= argc )
+			{
+				printf("Error: No value specified for '-%s'.\n",
+						"key");
+				usage( argv[0] );
+				return EXIT_FAILURE;
+			}
+			_key_len = atoi( argv[_i] );
+			switch( _key_len )
+			{
+				case 128:
+				case 192:
+				case 256:
+					break;
+				default:
+					printf("Error: Invalid value [%d] specified for '-%s'.\n",
+							_key_len, "key");
+					usage( argv[0] );
+					return EXIT_FAILURE;
+			}
+		}
+		
+		if( 0 == _found )
+		{
+			if( _text )
+			{
+				printf("Error: Invalid option '%s'.\n", argv[_i]);
+				usage( argv[0] );
+				return EXIT_FAILURE;
+			}
+			else
+			{
+				_text = (char *) calloc(strlen( argv[_i] ) + 1, sizeof(char));
+				if( NULL == _text )
+				{
+					printf("Error: Failed to allocate memory.\n", argv[_i]);
+					return EXIT_FAILURE;
+				}
+				strcpy( _text, argv[_i] );
+			}
+		}			
+	}
+
+	if( NULL == _text )
+	{
+		usage( argv[0] );
+		return EXIT_FAILURE;
+	}
+
+	oaes_sprintf( NULL, &_buf_len,
+			(const uint8_t *)_text, strlen( _text ) );
+	_buf = (char *) calloc(_buf_len, sizeof(char));
+	printf( "\n***** plaintext  *****\n" );
+	if( _buf )
+	{
+		oaes_sprintf( _buf, &_buf_len,
+				(const uint8_t *)_text, strlen( _text ) );
+		printf( "%s", _buf );
+	}
+	printf( "\n**********************\n" );
+	free( _buf );
+	
+	ctx = oaes_alloc();
+	if( NULL == ctx )
+	{
+		printf("Error: Failed to initialize OAES.\n");
+		free( _text );
+		return EXIT_FAILURE;
+	}
+	if( _is_ecb )
+		if( OAES_RET_SUCCESS != oaes_set_option( ctx, OAES_OPTION_ECB, NULL ) )
+			printf("Error: Failed to set OAES options.\n");
+	switch( _key_len )
+	{
+		case 128:
+			if( OAES_RET_SUCCESS != oaes_key_gen_128(ctx) )
+				printf("Error: Failed to generate OAES %d bit key.\n", _key_len);
+			break;
+		case 192:
+			if( OAES_RET_SUCCESS != oaes_key_gen_192(ctx) )
+				printf("Error: Failed to generate OAES %d bit key.\n", _key_len);
+			break;
+		case 256:
+			if( OAES_RET_SUCCESS != oaes_key_gen_256(ctx) )
+				printf("Error: Failed to generate OAES %d bit key.\n", _key_len);
+			break;
+		default:
+			break;
+	}
+
+	if( OAES_RET_SUCCESS != oaes_encrypt( ctx,
+			(const uint8_t *)_text, strlen( _text ), NULL, &_encbuf_len ) )
+		printf("Error: Failed to retrieve required buffer size for encryption.\n");
+	_encbuf = (uint8_t *) calloc( _encbuf_len, sizeof(uint8_t) );
+	if( NULL == _encbuf )
+	{
+		printf( "Error: Failed to allocate memory.\n" );
+		free( _text );
+		return EXIT_FAILURE;
+	}
+	if( OAES_RET_SUCCESS != oaes_encrypt( ctx,
+			(const uint8_t *)_text, strlen( _text ), _encbuf, &_encbuf_len ) )
+		printf("Error: Encryption failed.\n");
+
+	if( OAES_RET_SUCCESS != oaes_decrypt( ctx,
+			_encbuf, _encbuf_len, NULL, &_decbuf_len ) )
+		printf("Error: Failed to retrieve required buffer size for encryption.\n");
+	_decbuf = (uint8_t *) calloc( _decbuf_len, sizeof(uint8_t) );
+	if( NULL == _decbuf )
+	{
+		printf( "Error: Failed to allocate memory.\n" );
+		free( _text );
+		free( _encbuf );
+		return EXIT_FAILURE;
+	}
+	if( OAES_RET_SUCCESS != oaes_decrypt( ctx,
+			_encbuf, _encbuf_len, _decbuf, &_decbuf_len ) )
+		printf("Error: Decryption failed.\n");
+
+	if( OAES_RET_SUCCESS !=  oaes_free( &ctx ) )
+		printf("Error: Failed to uninitialize OAES.\n");
+	
+	oaes_sprintf( NULL, &_buf_len, _encbuf, _encbuf_len );
+	_buf = (char *) calloc(_buf_len, sizeof(char));
+	printf( "\n***** cyphertext *****\n" );
+	if( _buf )
+	{
+		oaes_sprintf( _buf, &_buf_len, _encbuf, _encbuf_len );
+		printf( "%s", _buf );
+	}
+	printf( "\n**********************\n" );
+	free( _buf );
+	
+	oaes_sprintf( NULL, &_buf_len, _decbuf, _decbuf_len );
+	_buf = (char *) calloc(_buf_len, sizeof( char));
+	printf( "\n***** plaintext  *****\n" );
+	if( _buf )
+	{
+		oaes_sprintf( _buf, &_buf_len, _decbuf, _decbuf_len );
+		printf( "%s", _buf );
+	}
+	printf( "\n**********************\n\n" );
+	free( _buf );
+	
+	free( _encbuf );
+	free( _decbuf );
+	free( _text );
+
+	return (EXIT_SUCCESS);
+}