@@ -1,14 +1,53 @@
+#include <string.h>
+#include <unistd.h>
+#include <stdlib.h>
 #include <stdio.h>
 
 #include "cackey-chrome.h"
 
 int main(int argc, char **argv) {
 	struct cackey_certificate *certificates;
-	int numCertificates;
+	char *pinPrompt = NULL, pin[32];
+	unsigned char signBuffer[1024];
+	int numCertificates, idxCertificate;
+	unsigned long signLength;
+	cackey_chrome_returnType rvSign;
 
 	numCertificates = cackey_chrome_listCertificates(&certificates);
 
 	printf("numCertificates = %i\n", numCertificates);
+
+	for (idxCertificate = 0; idxCertificate < numCertificates; idxCertificate++) {
+		printf("Certificate #%i: %lu bytes\n", idxCertificate, certificates[idxCertificate].certificate_len);
+
+		signLength = sizeof(signBuffer);
+		rvSign = cackey_chrome_signMessage(&certificates[idxCertificate], "Test", 4, signBuffer, &signLength, &pinPrompt, NULL);
+
+		if (rvSign == CACKEY_CHROME_NEEDLOGIN) {
+			if (pinPrompt == NULL) {
+				pinPrompt = strdup("Please enter your PIN: ");
+			}
+
+			printf("%s: ", pinPrompt);
+			fflush(stdout);
+
+			free(pinPrompt);
+
+			fgets(pin, sizeof(pin), stdin);
+			while (strlen(pin) >= 1 && pin[strlen(pin) - 1] == '\n') {
+				pin[strlen(pin) - 1] = '\0';
+			}
+
+			signLength = sizeof(signBuffer);
+			rvSign = cackey_chrome_signMessage(&certificates[idxCertificate], "Test", 4, signBuffer, &signLength, &pinPrompt, pin);
+		}
+
+		printf("Signed message \"Test\": %lu bytes (return value = %i)\n", signLength, rvSign);
+	}
+
+	cackey_chrome_freeCertificates(certificates, numCertificates);
+
+	cackey_chrome_terminate();
 
 	return(0);
 }