Let’s look at a simple example, called a columnar transposition cipher.
让我们看一个简单的例子，称为柱状转置密码。
| 单词 | Columnar transposition |
| 释义 |
Columnar transposition
原声例句
科技 Crash Course Let’s look at a simple example, called a columnar transposition cipher. 让我们看一个简单的例子，称为柱状转置密码。
英语百科
Transposition cipherIn cryptography, a transposition cipher is a method of encryption by which the positions held by units of plaintext (which are commonly characters or groups of characters) are shifted according to a regular system, so that the ciphertext constitutes a permutation of the plaintext. That is, the order of the units is changed (the plaintext is reordered). Mathematically a bijective function is used on the characters' positions to encrypt and an inverse function to decrypt. |
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