为了避免在传输 CryptoDataFormat 时对加密数据进行攻击，也可以根据可配置的 MAC 算法计算加密交换内容的消息身份验证代码。在加密后，计算的 HMAC 附加到流中。它在解密阶段的流分开。MAC 被重新计算并针对传输的版本进行验证，以保证在传输的版本不会被篡改。有关 Message Authentication Code 的更多信息，请参阅 http://en.wikipedia.org/wiki/HMAC
KeyGenerator generator = KeyGenerator.getInstance("DES");
CryptoDataFormat cryptoFormat = new CryptoDataFormat("DES", generator.generateKey());
cryptoFormat.setShouldAppendHMAC(true);
from("direct:hmac")
.marshal(cryptoFormat)
.to("mock:encrypted")
.unmarshal(cryptoFormat)
.to("mock:unencrypted");
KeyGenerator generator = KeyGenerator.getInstance("DES");
CryptoDataFormat cryptoFormat = new CryptoDataFormat("DES", generator.generateKey());
cryptoFormat.setShouldAppendHMAC(true);
from("direct:hmac")
.marshal(cryptoFormat)
.to("mock:encrypted")
.unmarshal(cryptoFormat)
.to("mock:unencrypted");
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<crypto id="hmac" algorithm="DES" keyRef="desKey" shouldAppendHMAC="true" />
<crypto id="hmac" algorithm="DES" keyRef="desKey" shouldAppendHMAC="true" />
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默认情况下，HMAC 使用 HmacSHA1 mac 算法计算，但可以通过提供不同的算法名称来轻松更改。了解如何通过配置的安全供应商检查哪些算法
KeyGenerator generator = KeyGenerator.getInstance("DES");
CryptoDataFormat cryptoFormat = new CryptoDataFormat("DES", generator.generateKey());
cryptoFormat.setShouldAppendHMAC(true);
cryptoFormat.setMacAlgorithm("HmacMD5");
from("direct:hmac-algorithm")
.marshal(cryptoFormat)
.to("mock:encrypted")
.unmarshal(cryptoFormat)
.to("mock:unencrypted");
KeyGenerator generator = KeyGenerator.getInstance("DES");
CryptoDataFormat cryptoFormat = new CryptoDataFormat("DES", generator.generateKey());
cryptoFormat.setShouldAppendHMAC(true);
cryptoFormat.setMacAlgorithm("HmacMD5");
from("direct:hmac-algorithm")
.marshal(cryptoFormat)
.to("mock:encrypted")
.unmarshal(cryptoFormat)
.to("mock:unencrypted");
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<crypto id="hmac-algorithm" algorithm="DES" keyRef="desKey" macAlgorithm="HmacMD5" shouldAppendHMAC="true" />
<crypto id="hmac-algorithm" algorithm="DES" keyRef="desKey" macAlgorithm="HmacMD5" shouldAppendHMAC="true" />
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