config/src/main/java/org/springframework/security/config/crypto/RsaKeyConversionServicePostProcessor.java
@Override
	public void postProcessBeanFactory(ConfigurableListableBeanFactory beanFactory) throws BeansException {
		if (hasUserDefinedConversionService(beanFactory)) {
			return;
		}

		Converter<String, RSAPrivateKey> pkcs8 = pkcs8();
		Converter<String, RSAPublicKey> x509 = x509();

		ConversionService service = beanFactory.getConversionService();
		if (service instanceof ConverterRegistry) {
			ConverterRegistry registry = (ConverterRegistry) service;
			registry.addConverter(String.class, RSAPrivateKey.class, pkcs8);
			registry.addConverter(String.class, RSAPublicKey.class, x509);
		} else {
			beanFactory.addPropertyEditorRegistrar(registry -> {
				registry.registerCustomEditor(RSAPublicKey.class, new ConverterPropertyEditorAdapter<>(x509));
				registry.registerCustomEditor(RSAPrivateKey.class, new ConverterPropertyEditorAdapter<>(pkcs8));
			});
		}
	}
@Override
	public void postProcessBeanFactory(ConfigurableListableBeanFactory beanFactory) throws BeansException {
		if (hasUserDefinedConversionService(beanFactory)) {
			return;
		}

		Converter<String, RSAPrivateKey> pkcs8 = pkcs8();
		Converter<String, RSAPublicKey> x509 = x509();

		ConversionService service = beanFactory.getConversionService();
		if (service instanceof ConverterRegistry) {
			ConverterRegistry registry = (ConverterRegistry) service;
			registry.addConverter(String.class, RSAPrivateKey.class, pkcs8);
			registry.addConverter(String.class, RSAPublicKey.class, x509);
		} else {
			beanFactory.addPropertyEditorRegistrar(registry -> {
				registry.registerCustomEditor(RSAPublicKey.class, new ConverterPropertyEditorAdapter<>(x509));
				registry.registerCustomEditor(RSAPrivateKey.class, new ConverterPropertyEditorAdapter<>(pkcs8));
			});
		}
	}
{@inheritDoc}