AES encrypt/decrypt demo programs.

Next they will be part of MaxScale

aes/aes_encode.c

@@ -0,0 +1,64 @@
+#include <stdio.h>
+#include <ctype.h>
+#include <errno.h>
+#include <netdb.h>
+#include <fcntl.h>
+#include <unistd.h>
+#include <syslog.h>
+#include <string.h>
+#include <stdlib.h>
+#include <stdarg.h>
+
+#include <openssl/aes.h>
+
+int main(int argc, char *argv[])
+{   
+	char *input_data = NULL;
+	char *input_data_padded = NULL;
+	uint8_t output[1 + 128] = "";
+	char hex_output[1 + 128 * 2] ="";
+	int input_len = 0;
+
+	char enc_key[1 + AES_BLOCK_SIZE * 2]="12345678901234567890123456789012";
+	char iv[1 + AES_BLOCK_SIZE]="GW_SCALE_M_M_V__";
+
+	AES_KEY ctx;
+	AES_KEY dectx;
+
+	if (argv[1]) {
+		input_data = argv[1];
+	} else {
+		input_data = "|_AES256_input_text_|";
+  	} 
+
+	input_len = strlen(input_data) - 1 ;
+
+	/* Please note AES_BLOCK_SIZE is 16 bytes */
+
+	if (input_len >= 0)
+		input_len = (( input_len / AES_BLOCK_SIZE ) + 1) * AES_BLOCK_SIZE;
+	else
+		input_len = AES_BLOCK_SIZE;
+
+	if (input_len > strlen(input_data)) {
+		input_data_padded = calloc(1, input_len);
+		strcpy(input_data_padded, input_data);
+	} else {
+		input_data_padded = input_data;
+	}
+
+	fprintf(stderr,"OPENSSL: Input text [%s] is %i -> 16 bytes rounded is %i\n", input_data_padded, strlen(input_data_padded), input_len);
+
+	/* Setting AES 256 ecryption */
+	AES_set_encrypt_key(enc_key, (AES_BLOCK_SIZE * 2) * 8, &ctx);
+
+	/* Let's encrypt the input text */
+	AES_cbc_encrypt(input_data_padded, output, input_len, &ctx, iv, AES_ENCRYPT);
+
+	/* Convert binary data to HEX: output size is twice the inoput */
+	gw_bin2hex(hex_output, output, input_len);
+    
+	printf("\nEncrypted HEX is [%s]: keep it!\n", hex_output);
+
+	exit(0);
+}