使用Android收集用户指纹是否可行? [英] Is it doable to collect user fingerprint with android?
问题描述
使用Android收集用户指纹是否可行?我们的后端系统具有指纹数据库.我们想将收集到的指纹与数据库进行匹配，以查看是否存在匹配项.
Is it doable to collect user fingerprint with android? Our backend system has a fingerprint database. We'd like to match the fingerprints collected against database to see if there is a match.
推荐答案
如果通过收集用户指纹" ，您的意思是获取某种形式的指纹图像，那么不能，您不能
If by "collect user fingerprint" you mean getting an image of the fingerprint in some form, then no, you can't.
Android的指纹API本质上是这样的:
Android's fingerprint API essentially works like this:
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用户在Android设置应用中注册了指纹.
The user enrolls a fingerprint in the Android Settings app.
您的应用会创建一个与用户相关联的加密密钥，以及一个 CryptoObject 基于该密钥，并启动指纹认证.
Your app creates a cryptographic key that it associates with the user, and a CryptoObject based on that key, and starts a fingerprint authentication.
如果传感器读取的指纹与注册指纹的 any 相匹配，则表示身份验证成功，并且CryptoObject可用于执行加密操作(例如加密/解密)一些数据).
If the fingerprint read by the sensor matches any of the enrolled fingerprints, the authentication is successful and the CryptoObject can be used to perform a cryptographic operation (such as encrypting/decrypting some data).
您的应用程序，任何其他应用程序甚至操作系统都没有可用的实际指纹.
At no point is the actual fingerprint available to your app, to any other app, or even to the OS.
从Google的指纹实施指南到制造商:
From Google's fingerprint implementation guidelines to manufacturers:
原始指纹数据或衍生数据(例如模板)绝不能从传感器驱动程序或受信任的执行环境(TEE)外部访问.
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