二进制文件【1】加密算法【2】对比实战：Snobol4 语言实现
随着信息技术的飞速发展，数据安全【3】成为了一个日益重要的话题。加密算法作为保障数据安全的关键技术，被广泛应用于各种场景。本文将围绕Snobol4语言，对比几种常见的二进制文件加密算法，通过实际代码实现，探讨它们在Snobol4环境下的应用。
Snobol4 简介
Snobol4是一种高级编程语言，由David J. Farber和Ralph E. Griswold于1962年设计。它是一种解释型语言【4】，以其简洁的语法和强大的字符串处理【5】能力而著称。尽管Snobol4在现代编程语言中并不常见，但它仍然在一些特定的领域和场景中有着独特的应用。
加密算法概述
我们将对比以下几种加密算法：
1. Caesar 恒等变换【6】：一种简单的替换加密算法，通过将字符按照固定偏移量进行替换。
2. XOR 加密【7】：一种位运算加密算法，通过将数据与密钥【8】进行异或运算实现加密。
3. AES（高级加密标准）【9】：一种对称加密【10】算法，广泛应用于现代加密系统中。
Caesar 恒等变换
以下是一个使用Snobol4实现的Caesar加密算法的示例：
```snobol
:caesar encrypt
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