feat: Implement new services required or OpenSSL certificate creation

src/test/java/de/mlessmann/certassist/TestOpenSSLCertificateCreator.java

@@ -10,11 +10,11 @@ import org.junit.jupiter.api.Test;
 
 class TestOpenSSLCertificateCreator {
 
-    private CertPasswordProvider passwordProvider;
+    private CertificatePasswordProvider passwordProvider;
 
     @BeforeEach
     void setUp() {
-        passwordProvider = mock(CertPasswordProvider.class);
+        passwordProvider = mock(CertificatePasswordProvider.class);
         when(passwordProvider.generateNewPassword()).thenReturn("ABC-123");
     }
 

src/test/java/de/mlessmann/certassist/service/InMemoryCertificatePasswordProvider.java

@@ -0,0 +1,40 @@
+package de.mlessmann.certassist.service;
+
+import de.mlessmann.certassist.openssl.CertificatePasswordProvider;
+import java.security.SecureRandom;
+import java.util.Map;
+import java.util.Objects;
+import java.util.Optional;
+import java.util.concurrent.ConcurrentHashMap;
+import org.springframework.stereotype.Service;
+
+@Service
+public class InMemoryCertificatePasswordProvider implements CertificatePasswordProvider {
+
+    private final Map<String, String> passwords = new ConcurrentHashMap<>();
+    private static final String CHARACTERS =
+        "ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789!@#$%^&*()-_=+[]{}|;:,.<>?";
+    private static final int PASSPHRASE_LENGTH = 16;
+
+    @Override
+    public String generateNewPassword() {
+        SecureRandom random = new SecureRandom();
+        StringBuilder passphrase = new StringBuilder(PASSPHRASE_LENGTH);
+        for (int i = 0; i < PASSPHRASE_LENGTH; i++) {
+            passphrase.append(CHARACTERS.charAt(random.nextInt(CHARACTERS.length())));
+        }
+        return passphrase.toString();
+    }
+
+    @Override
+    public String getPasswordFor(String certificateFingerprint) {
+        return Optional.ofNullable(passwords.get(certificateFingerprint)).orElseThrow();
+    }
+
+    @Override
+    public void setPasswordFor(String certificateFingerprint, String password) {
+        Objects.requireNonNull(certificateFingerprint);
+        Objects.requireNonNull(password);
+        passwords.put(certificateFingerprint, password);
+    }
+}