diff --git a/src/keystore.h b/src/keystore.h
--- a/src/keystore.h
+++ b/src/keystore.h
@@ -64,33 +64,9 @@
 public:
     bool AddKeyPubKey(const CKey &key, const CPubKey &pubkey) override;
     bool GetPubKey(const CKeyID &address, CPubKey &vchPubKeyOut) const override;
-    bool HaveKey(const CKeyID &address) const override {
-        bool result;
-        {
-            LOCK(cs_KeyStore);
-            result = (mapKeys.count(address) > 0);
-        }
-        return result;
-    }
-    std::set<CKeyID> GetKeys() const override {
-        LOCK(cs_KeyStore);
-        std::set<CKeyID> set_address;
-        for (const auto &mi : mapKeys) {
-            set_address.insert(mi.first);
-        }
-        return set_address;
-    }
-    bool GetKey(const CKeyID &address, CKey &keyOut) const override {
-        {
-            LOCK(cs_KeyStore);
-            KeyMap::const_iterator mi = mapKeys.find(address);
-            if (mi != mapKeys.end()) {
-                keyOut = mi->second;
-                return true;
-            }
-        }
-        return false;
-    }
+    bool HaveKey(const CKeyID &address) const override;
+    std::set<CKeyID> GetKeys() const override;
+    bool GetKey(const CKeyID &address, CKey &keyOut) const override;
     virtual bool AddCScript(const CScript &redeemScript) override;
     virtual bool HaveCScript(const CScriptID &hash) const override;
     virtual bool GetCScript(const CScriptID &hash,
diff --git a/src/keystore.cpp b/src/keystore.cpp
--- a/src/keystore.cpp
+++ b/src/keystore.cpp
@@ -35,6 +35,32 @@
     return true;
 }
 
+bool CBasicKeyStore::HaveKey(const CKeyID &address) const {
+    LOCK(cs_KeyStore);
+    return mapKeys.count(address) > 0;
+}
+
+std::set<CKeyID> CBasicKeyStore::GetKeys() const {
+    LOCK(cs_KeyStore);
+    std::set<CKeyID> set_address;
+    for (const auto &mi : mapKeys) {
+        set_address.insert(mi.first);
+    }
+    return set_address;
+}
+
+bool CBasicKeyStore::GetKey(const CKeyID &address, CKey &keyOut) const {
+    {
+        LOCK(cs_KeyStore);
+        KeyMap::const_iterator mi = mapKeys.find(address);
+        if (mi != mapKeys.end()) {
+            keyOut = mi->second;
+            return true;
+        }
+    }
+    return false;
+}
+
 bool CBasicKeyStore::AddCScript(const CScript &redeemScript) {
     if (redeemScript.size() > MAX_SCRIPT_ELEMENT_SIZE)
         return error("CBasicKeyStore::AddCScript(): redeemScripts > %i bytes "
diff --git a/src/wallet/crypter.h b/src/wallet/crypter.h
--- a/src/wallet/crypter.h
+++ b/src/wallet/crypter.h
@@ -141,43 +141,16 @@
         : fUseCrypto(false), fDecryptionThoroughlyChecked(false) {}
 
     bool IsCrypted() const { return fUseCrypto; }
-
-    bool IsLocked() const {
-        if (!IsCrypted()) return false;
-        bool result;
-        {
-            LOCK(cs_KeyStore);
-            result = vMasterKey.empty();
-        }
-        return result;
-    }
-
+    bool IsLocked() const;
     bool Lock();
 
     virtual bool AddCryptedKey(const CPubKey &vchPubKey,
                                const std::vector<uint8_t> &vchCryptedSecret);
     bool AddKeyPubKey(const CKey &key, const CPubKey &pubkey) override;
-    bool HaveKey(const CKeyID &address) const override {
-        LOCK(cs_KeyStore);
-        if (!IsCrypted()) {
-            return CBasicKeyStore::HaveKey(address);
-        }
-
-        return mapCryptedKeys.count(address) > 0;
-    }
+    bool HaveKey(const CKeyID &address) const override;
     bool GetKey(const CKeyID &address, CKey &keyOut) const override;
     bool GetPubKey(const CKeyID &address, CPubKey &vchPubKeyOut) const override;
-    std::set<CKeyID> GetKeys() const override {
-        LOCK(cs_KeyStore);
-        if (!IsCrypted()) {
-            return CBasicKeyStore::GetKeys();
-        }
-        std::set<CKeyID> set_address;
-        for (const auto &mi : mapCryptedKeys) {
-            set_address.insert(mi.first);
-        }
-        return set_address;
-    }
+    std::set<CKeyID> GetKeys() const override;
 
     /**
      * Wallet status (encrypted, locked) changed.
diff --git a/src/wallet/crypter.cpp b/src/wallet/crypter.cpp
--- a/src/wallet/crypter.cpp
+++ b/src/wallet/crypter.cpp
@@ -151,6 +151,18 @@
     return true;
 }
 
+bool CCryptoKeyStore::IsLocked() const {
+    if (!IsCrypted()) {
+        return false;
+    }
+    bool result;
+    {
+        LOCK(cs_KeyStore);
+        result = vMasterKey.empty();
+    }
+    return result;
+}
+
 bool CCryptoKeyStore::Lock() {
     if (!SetCrypted()) return false;
 
@@ -225,6 +237,14 @@
     return true;
 }
 
+bool CCryptoKeyStore::HaveKey(const CKeyID &address) const {
+    LOCK(cs_KeyStore);
+    if (!IsCrypted()) {
+        return CBasicKeyStore::HaveKey(address);
+    }
+    return mapCryptedKeys.count(address) > 0;
+}
+
 bool CCryptoKeyStore::GetKey(const CKeyID &address, CKey &keyOut) const {
     {
         LOCK(cs_KeyStore);
@@ -258,6 +278,18 @@
     return false;
 }
 
+std::set<CKeyID> CCryptoKeyStore::GetKeys() const {
+    LOCK(cs_KeyStore);
+    if (!IsCrypted()) {
+        return CBasicKeyStore::GetKeys();
+    }
+    std::set<CKeyID> set_address;
+    for (const auto &mi : mapCryptedKeys) {
+        set_address.insert(mi.first);
+    }
+    return set_address;
+}
+
 bool CCryptoKeyStore::EncryptKeys(CKeyingMaterial &vMasterKeyIn) {
     {
         LOCK(cs_KeyStore);