diff --git a/include/QtCrypto/qca_core.h b/include/QtCrypto/qca_core.h
index f62f44bb..7d61c152 100644
--- a/include/QtCrypto/qca_core.h
+++ b/include/QtCrypto/qca_core.h
@@ -378,16 +378,23 @@ QCA_EXPORT QVariant getProperty(const QString &name);
    Set provider configuration
 
    Allowed value types: QString, int, bool
+
+   \param name the name of the provider to set the configuration to
+   \param config the configuration
 */
 QCA_EXPORT void setProviderConfig(const QString &name, const QVariantMap &config);
 
 /**
    Retrieve provider configuration
+
+   \param name the name of the provider to retrieve the configuration of
 */
 QCA_EXPORT QVariantMap getProviderConfig(const QString &name);
 
 /**
    Save provider configuration to persistent storage
+
+   \param name the name of the provider to have its configuration saved
 */
 QCA_EXPORT void saveProviderConfig(const QString &name);
 
@@ -816,6 +823,8 @@ QVariantMap defaultConfig() const
 	   If your provider supports configuration options, you
 	   will be advised of user changes to the configuration 
 	   when this method is called.
+
+	   \param config the new configuration to be used by the provider
 	*/
 	virtual void configChanged(const QVariantMap &config);
 };
diff --git a/include/QtCrypto/qca_publickey.h b/include/QtCrypto/qca_publickey.h
index cd489e3d..87eeb470 100644
--- a/include/QtCrypto/qca_publickey.h
+++ b/include/QtCrypto/qca_publickey.h
@@ -138,6 +138,10 @@ enum DLGroupSet
    to raw RSA signing (mainly smartcard providers).  This is a built-in
    function of QCA and does not utilize a provider.  SHA1, MD5, MD2,
    and RIPEMD160 are supported.
+
+   \param hashName the hash type used to create the digest
+   \param digest the digest to encode in EMSA3 format
+   \param size the desired size of the encoding output (-1 for automatic size)
 */
 QCA_EXPORT QByteArray emsa3Encode(const QString &hashName, const QByteArray &digest, int size = -1);
 
diff --git a/include/QtCrypto/qcaprovider.h b/include/QtCrypto/qcaprovider.h
index 703c6379..19df281a 100644
--- a/include/QtCrypto/qcaprovider.h
+++ b/include/QtCrypto/qcaprovider.h
@@ -1439,6 +1439,9 @@ public:
 	   Create PKCS#7 DER output based on the input certificates and CRLs
 
 	   Returns an empty array on error.
+
+	   \param certs list of certificates to store in the output
+	   \param crls list of CRLs to store in the output
 	*/
 	virtual QByteArray toPKCS7(const QList<CertContext*> &certs, const QList<CRLContext*> &crls) const = 0;
 
@@ -2495,6 +2498,21 @@ public:
 
 	   This function will be called before any other configuration
 	   functions.
+
+	   \param service the name of the network service being provided by
+	   this application, which can be used by the SASL system for policy
+	   control.  Examples: "imap", "xmpp"
+	   \param host the hostname that the application is interacting with
+	   or as
+	   \param local pointer to a HostPort representing the local end of a
+	   network socket, or 0 if this information is unknown or not
+	   available
+	   \param remote pointer to a HostPort representing the peer end of a
+	   network socket, or 0 if this information is unknown or not
+	   available
+	   \param ext_id the id to be used for SASL EXTERNAL (client only)
+	   \param ext_ssf the SSF of the external authentication channel
+	   (client only)
 	*/
 	virtual void setup(const QString &service, const QString &host, const HostPort *local, const HostPort *remote, const QString &ext_id, int ext_ssf) = 0;
 
@@ -2539,8 +2557,8 @@ public:
 	   Success, then serverFirstStep() will be called next.
 
 	   \param realm the realm to authenticate in
-	   \param disableServerSendLast whether the client sends first (true) or the server
-	   sends first (false)
+	   \param disableServerSendLast whether the client sends first (true)
+	   or the server sends first (false)
 	*/
 	virtual void startServer(const QString &realm, bool disableServerSendLast) = 0;
 
@@ -2554,6 +2572,8 @@ public:
 	   is Success, then the session is now in the connected state.
 
 	   \param mech the mechanism to use
+	   \param clientInit initial data from the client, or 0 if there is
+	   no such data
 	*/
 	virtual void serverFirstStep(const QString &mech, const QByteArray *clientInit) = 0;