Fixed some typos, courtesy of codespell

src/libstrongswan/credentials/auth_cfg.c

@@ -737,8 +737,8 @@ METHOD(auth_cfg_t, add_pubkey_constraints, void,
 	}
 	enumerator->destroy(enumerator);
 
-	/* if no explicit IKE signature contraints were added we add them for all
-	 * configured signature contraints */
+	/* if no explicit IKE signature constraints were added we add them for all
+	 * configured signature constraints */
 	if (ike && !ike_added &&
 		lib->settings->get_bool(lib->settings,
 							"%s.signature_authentication_constraints", TRUE,

src/libstrongswan/credentials/cred_encoding.c

@@ -39,7 +39,7 @@ struct private_cred_encoding_t {
 	hashtable_t *cache[CRED_ENCODING_MAX];
 
 	/**
-	 * Registered encoding fuctions, cred_encoder_t
+	 * Registered encoding functions, cred_encoder_t
 	 */
 	linked_list_t *encoders;
 

src/libstrongswan/credentials/sets/cert_cache.c

@@ -239,7 +239,7 @@ METHOD(cert_cache_t, issued_by, bool,
 }
 
 /**
- * certificate enumerator implemenation
+ * certificate enumerator implementation
  */
 typedef struct {
 	/** implements enumerator_t interface */