[英]Simple JavaScript encryption function
I have a function which has to change characters from one array to the characters from another. 我有一个功能,必须将一个数组中的字符更改为另一个数组中的字符。 It is kind of simple encryption. 这是一种简单的加密。 I have: 我有:
var plainArray = ['A','B','C',...,'Z'];
var cipherArray = ['a','b','c',...,'z'];
function rotateToPosition(signalCharacter, indexCharacter, plainAlphabet, cipherAlphabet)
already working. 已经工作了。 Now I have to write a function which will change given word into encrypted word. 现在,我必须编写一个函数,将给定的单词更改为加密的单词。
function encrypt(plainText, signalCharacter, indexCharacter, plainAlphabet, cipherAlphabet)
{
var encryptedString = signalCharacter;
//i is what will hold the results of the encrpytion until it can be appended to encryptedString
var i;
// rotate array to signal character position
var rotateArray = rotateToPosition(signalCharacter, indexCharacter, plainAlphabet, cipherAlphabet);
for (var count = 0; count < plainText.length; count++)
{
plainAlphabet = plainText.charAt(count);
i = cipherAlphabet[plainAlphabet];
encryptedString = encryptedString + rotateArray[i];
}
return encryptedString;
}
This function returns signal character and then a string of errors. 此函数返回信号字符,然后返回一串错误。 Do you know what is wrong? 你知道出什么事了吗
You are overwriting plainAlphabet
with one character, thus discarding the alphabet. 您正在用一个字符覆盖plainAlphabet
,从而丢弃了字母。 I guess that's not what you want. 我想那不是你想要的。
However, you only posted the signature of rotateToPosition
and not the actual code of it, so I cannot test my solution. 但是,您仅张贴了rotateToPosition
的签名,而不是其实际代码,因此我无法测试我的解决方案。
function encrypt(plainText, signalCharacter, indexCharacter, plainAlphabet, cipherAlphabet) {
var encryptedString = signalCharacter;
//i is what will hold the results of the encrpytion until it can be appended to encryptedString
var i;
// rotate array to signal character position
var rotateArray = rotateToPosition(signalCharacter, indexCharacter, plainAlphabet, cipherAlphabet);
for (var count = 0; count < plainText.length; count++)
{
var plainLetter = plainText.charAt(count);
i = cipherAlphabet[plainLetter];
encryptedString = encryptedString + rotateArray[i];
}
return encryptedString;
}
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