OpenSSL Hmac和BouncyCastle Hmac不同

我试图找出为什么openssl中的hmac没有给我与java中的hmac相同的结果.

在开放的ssl

echo -n "Hello" | openssl dgst -sha256 -hmac 04d6b077d60e323711b37813b3a68a71

输出:cc598d8840fe409d5fcc1c1c856f9e8c311d1c458850615555857b023f1cd94c

在java中

String key = "04d6b077d60e323711b37813b3a68a71"
SecretKeySpec key2 = new SecretKeySpec(Hex.decode(key), "RAW");
String data = "Hello";
Mac hmac = Mac.getInstance("Hmac-SHA256", BouncyCastleProvider.PROVIDER_NAME);
hmac.init(key2)
byte[] bytes = hmac.doFinal(data.getBytes());
System.out.println(Hex.toHexString(bytes));

输出:877f9c8eb44c20987e3978928fbfcea0f1cf99c88f9db904596921b7ecf0613b

我不知道为什么这些不同.