diff --git a/src/utils/CryptUtils.ts b/src/utils/CryptUtils.ts
new file mode 100644
index 0000000..8922dc4
--- /dev/null
+++ b/src/utils/CryptUtils.ts
@@ -0,0 +1,30 @@
+/**
+ * Cryptographic utilities
+ * 
+ * @author Pierre HUBERT
+ */
+
+import * as crypto from 'crypto';
+
+import { execSync } from 'child_process';
+
+/**
+ * Generate sha1-encoded string
+ * 
+ * @param str The string to encode
+ */
+export function sha1(str : string) : string {
+	const shasum = crypto.createHash("sha1");
+	shasum.update(str);
+	return shasum.digest("hex");
+}
+
+/**
+ * Interface with PHP crypt function
+ * 
+ * @param str The string to encrypt
+ * @param salt Salt to use
+ */
+export function crypt(str : string, salt: string) : string {
+	return execSync("/usr/bin/php -r \"echo crypt(\'"+str+"\', \'"+salt+"\');\"").toString();
+}
\ No newline at end of file