BAEL-4488 Create AvailableCiphers

reza-ep · reza-ep · commit c71236d3ca0c · 2020-09-15T11:12:24.000+04:30
diff --git a/core-java-modules/core-java-security-2/src/main/java/com/baeldung/cipher/AvailableCiphers.java b/core-java-modules/core-java-security-2/src/main/java/com/baeldung/cipher/AvailableCiphers.java
@@ -0,0 +1,32 @@
+package com.baeldung.cipher;
+
+import java.security.Provider;
+import java.security.Security;
+import java.util.Arrays;
+import java.util.List;
+import java.util.stream.Collectors;
+
+public class AvailableCiphers {
+    public static void main(String[] args) {
+        printAllCiphers();
+        printCompatibleCiphers();
+    }
+
+    private static void printAllCiphers() {
+        for (Provider provider : Security.getProviders()) {
+            for (Provider.Service service : provider.getServices()) {
+                System.out.println(service.getAlgorithm());
+            }
+        }
+    }
+
+    private static void printCompatibleCiphers() {
+        List<String> algorithms = Arrays.stream(Security.getProviders())
+                .flatMap(provider -> provider.getServices().stream())
+                .filter(service -> "Cipher".equals(service.getType()))
+                .map(Provider.Service::getAlgorithm)
+                .collect(Collectors.toList());
+
+        algorithms.forEach(System.out::println);
+    }
+}
