kaptcha

maxkey-authentications/maxkey-authentication-captcha/src/main/java/com/google/code/kaptcha/impl/UniqueTextCreator.java

@@ -0,0 +1,27 @@
+package com.google.code.kaptcha.impl;
+
+import java.util.Random;
+
+import com.google.code.kaptcha.text.TextProducer;
+import com.google.code.kaptcha.util.Configurable;
+
+public class UniqueTextCreator  extends Configurable implements TextProducer{
+
+	@Override
+	public String getText() {
+		int length = getConfig().getTextProducerCharLength();
+		char[] chars = getConfig().getTextProducerCharString();
+		Random rand = new Random();
+		StringBuffer text = new StringBuffer();
+		int i = 0;
+		while ( i < length){
+			char word= chars[rand.nextInt(chars.length)];
+			if(text.indexOf(word + "") <= -1 ) {
+				text.append(word);
+				i++;
+			}
+		}
+		return text.toString();
+	}
+
+}

maxkey-authentications/maxkey-authentication-captcha/src/main/resources/kaptcha.properties

@@ -1,13 +1,14 @@
-kaptcha.image.width=80
+kaptcha.image.width=120
 kaptcha.image.height=40
 kaptcha.border=no
 #kaptcha.obscurificator.impl=com.google.code.kaptcha.impl.ShadowGimpy
 kaptcha.obscurificator.impl=com.google.code.kaptcha.impl.Ripple
-kaptcha.textproducer.font.size=23
+kaptcha.textproducer.font.size=30
 kaptcha.textproducer.char.string=0123456789
 kaptcha.textproducer.char.length=4
-kaptcha.textproducer.char.space=3
+kaptcha.textproducer.char.space=6
 #kaptcha.noise.impl=com.google.code.kaptcha.impl.DefaultNoise
 kaptcha.noise.impl=com.google.code.kaptcha.impl.LightNoise
 #kaptcha.noise.color=white
-kaptcha.word.impl=com.google.code.kaptcha.text.impl.RandomColorWordRenderer
+kaptcha.word.impl=com.google.code.kaptcha.text.impl.RandomColorWordRenderer
+kaptcha.textproducer.impl=com.google.code.kaptcha.impl.UniqueTextCreator

maxkey-authentications/maxkey-authentication-core/src/main/java/org/maxkey/authn/jwt/AuthJwtService.java

@@ -65,7 +65,10 @@ public class AuthJwtService {
 	 * @return AuthJwt
 	 */
 	public AuthJwt genAuthJwt(Authentication authentication) {
-		return new AuthJwt(genJwt(authentication), authentication);
+		if(authentication != null) {
+			return new AuthJwt(genJwt(authentication), authentication);
+		}
+		return null;
 	}
 	
 	/**