From 9bce1e13ec136c06650868acf3438e789e366d5f Mon Sep 17 00:00:00 2001
From: J08nY
Date: Mon, 27 Nov 2017 23:19:48 +0100
Subject: Add a basic NativeECLibrary interface.

---
 .../standalone/libs/ProviderECLibrary.java         | 90 ++++++++++++++++++++++
 1 file changed, 90 insertions(+)
 create mode 100644 src/cz/crcs/ectester/standalone/libs/ProviderECLibrary.java

(limited to 'src/cz/crcs/ectester/standalone/libs/ProviderECLibrary.java')

diff --git a/src/cz/crcs/ectester/standalone/libs/ProviderECLibrary.java b/src/cz/crcs/ectester/standalone/libs/ProviderECLibrary.java
new file mode 100644
index 0000000..879cc16
--- /dev/null
+++ b/src/cz/crcs/ectester/standalone/libs/ProviderECLibrary.java
@@ -0,0 +1,90 @@
+package cz.crcs.ectester.standalone.libs;
+
+import cz.crcs.ectester.standalone.consts.Ident;
+import cz.crcs.ectester.standalone.consts.KeyAgreementIdent;
+import cz.crcs.ectester.standalone.consts.KeyPairGeneratorIdent;
+import cz.crcs.ectester.standalone.consts.SignatureIdent;
+
+import java.security.Provider;
+import java.security.Security;
+import java.util.HashSet;
+import java.util.Set;
+import java.util.function.Function;
+
+/**
+ * @author Jan Jancar johny@neuromancer.sk
+ */
+public class ProviderECLibrary implements ECLibrary {
+    private Provider provider;
+    private boolean initialized;
+
+    public ProviderECLibrary(Provider provider) {
+        this.provider = provider;
+        this.initialized = false;
+    }
+
+    @Override
+    public boolean initialize() {
+        try {
+            int result = Security.addProvider(provider);
+            if (result == -1) {
+                provider = Security.getProvider(provider.getName());
+            }
+            initialized = true;
+        } catch (NullPointerException | SecurityException ignored) {
+            initialized = false;
+        }
+        return initialized;
+    }
+
+    @Override
+    public boolean isInitialized() {
+        return initialized;
+    }
+
+    private <T extends Ident> Set<T> getIdents(String type, Function<String, T> getter) {
+        Set<T> results = new HashSet<>();
+        if (!initialized) {
+            return results;
+        }
+
+        for (Provider.Service service : provider.getServices()) {
+            if (service.getType().equals(type)) {
+                T id = getter.apply(service.getAlgorithm());
+                if (id != null) {
+                    results.add(id);
+                }
+            }
+        }
+        return results;
+    }
+
+    @Override
+    public Set<KeyAgreementIdent> getECKAs() {
+        return getIdents("KeyAgreement", KeyAgreementIdent::get);
+    }
+
+    @Override
+    public Set<SignatureIdent> getECSigs() {
+        return getIdents("Signature", SignatureIdent::get);
+    }
+
+    @Override
+    public Set<KeyPairGeneratorIdent> getKPGs() {
+        return getIdents("KeyPairGenerator", KeyPairGeneratorIdent::get);
+    }
+
+    @Override
+    public String name() {
+        return provider.getInfo();
+    }
+
+    public Provider getProvider() {
+        return provider;
+    }
+
+    @Override
+    public String toString() {
+        return name();
+    }
+}
-- 
cgit v1.2.3-70-g09d2