Import pwgen classes

1 files changed, 26 insertions, 0 deletions

diff --git a/app/src/main/java/com/zeapo/pwdstore/pwgen/randnum.java b/app/src/main/java/com/zeapo/pwdstore/pwgen/randnum.java
new file mode 100644
index 00000000..83cf4b03
--- /dev/null
+++ b/app/src/main/java/com/zeapo/pwdstore/pwgen/randnum.java
@@ -0,0 +1,26 @@
+package com.zeapo.pwdstore.pwgen;
+
+import java.security.NoSuchAlgorithmException;
+import java.security.SecureRandom;
+
+public class randnum {
+    private static SecureRandom random;
+
+    static {
+        try {
+            random = SecureRandom.getInstance("SHA1PRNG");
+        } catch (NoSuchAlgorithmException e) {
+            throw new SecurityException("SHA1PRNG not available", e);
+        }
+    }
+
+    /**
+     * Generate a random number n, where 0 <= n < maxNum.
+     *
+     * @param maxNum the bound on the random number to be returned
+     * @return the generated random number
+     */
+    public static int number(int maxNum) {
+        return random.nextInt(maxNum);
+    }
+}