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程序员之网络安全系列（三）：数据加密之对称加密算法 - 更多技术 - 清泛网...
...也可以用作解密密钥。 比如，我们给WORD文档设置密码1234, 那么其他人想要打开文档也必须输入1234才能打开。
常用加密算法:
DES（Data Encryption Standard）：数据加密标准，速度较快，适用于加密大量数据的场合。
3DES（Triple DES...
Always pass weak reference of self into block in ARC?
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answered Nov 17 '13 at 14:55
jemmonsjemmons
18.1k55 gold badges5252 silver badges8383 bronze badges
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JavaScript: Upload file
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async function SavePhoto(inp)
{
let user = { name:'john', age:34 };
let formData = new FormData();
let photo = inp.files[0];
formData.append("photo", photo);
formData.append("user", JSON.stringify(user));
try {
let r = await fetc...
How to select between brackets (or quotes or …) in Vim?
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edited May 23 '17 at 12:10
Community♦
111 silver badge
answered Jun 30 '09 at 5:59
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Rethrowing exceptions in Java without losing the stack trace
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answered Jul 8 '09 at 11:43
Brian AgnewBrian Agnew
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Check if string begins with something? [duplicate]
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376
Use stringObject.substring
if (pathname.substring(0, 6) == "/sub/1") {
// ...
}
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How do I format XML in Notepad++?
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edited Apr 18 '19 at 23:32
answered Oct 18 '10 at 16:48
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Get the Highlighted/Selected text
...tSelectionText();
};
Selection:
<br>
<textarea id="sel" rows="3" cols="50"></textarea>
<p>Please select some text.</p>
<input value="Some text in a text input">
<br>
<input type="search" value="Some text in a search input">
<br>
<inp...
How to iterate over a JSONObject?
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613
Maybe this will help:
JSONObject jsonObject = new JSONObject(contents.trim());
Iterator<Stri...