异端邪说下 发表于 2025-3-30 10:25:29
Helmut Günzler,Rolf Borsdorf,Hermann Wisserrors, conquerors, kings, and so on, in the form of verbal messages through a human messenger. Although unspoken rules protected the human messengers, sometimes this rule was not followed, and the messenger was caught by enemies. At that point, all the enemy needed to do was send an altered message t山羊 发表于 2025-3-30 15:14:28
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http://reply.papertrans.cn/25/2425/242500/242500_57.png湿润 发表于 2025-3-31 15:47:45
Ursula Bilitewski,Jutta Fischer,Ursula Obstfore, it is known that this specific message belongs to a specific person. In the digital world, things can happen similarly: a piece of data (message) is created by an individual, and then the message is signed digitally with a specific signature by that individual. Digital signatures are an import带子 发表于 2025-3-31 20:26:17
http://reply.papertrans.cn/25/2425/242500/242500_59.pngfamine 发表于 2025-3-31 23:48:40
https://doi.org/10.1007/978-3-642-72590-6yptography primitives. JCA was introduced as part of the Java Development Kit (JDK) and offers a framework and implementation for encryption, key generation and agreement, and Message Authentication Code (MAC) algorithms. The cryptography algorithms and methods are implemented and offered through the . package.