cryptographic function

基本解释

JCA defines a series of Engine classes, where each Engine provides a cryptographic function.
JCA 定义了一系列引擎（Engine）类，其中每个引擎提供一种密码功能。
If the device only performs a simple cryptographic function, all of the objects must be managed by the software.
如果设备只执行简单的密码功能，则所有对象必须由软件来管理。
A hash is the result of a cryptographic function that takes an arbitrarily sized string of data, performs a mathematical encryption function on it, and returns a fixed-size string.
哈希是一种加密功能所获得的结果，这种加密需要获取任意大小的字符串数据，并用算法对其进行加密，然后返回一个固定大小的字符串。

Basically, bitZino is deploying a cryptographic hash function (SHA256 algorithm) to create a fingerprint of an already shuffled deck.
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