本文介绍了如何使用node.js加密来计算blob的sha1哈希值的处理方法,对大家解决问题具有一定的参考价值,需要的朋友们下面随着小编来一起学习吧!
问题描述
我尝试了以下方法: b $ b
export函数calculateHash(file,type){
const reader = new FileReader();
var hash = crypto.createHash('sha1');
hash.setEncoding('hex');
const testfile = reader.readAsDataURL(file);
hash.write(testfile);
hash.end();
var sha1sum = hash.read();
console.log(sha1sum);
// fd.on((end)=> {
// hash.end();
// const test = hash.read();
// });
}
从我的网站上选择带有文件上传按钮的文件。
如何计算sha1散列?
解决方案
if你正在阅读作为一个块的内容,你做得比它需要的更难。我们这样做:
const fs = require('fs');
导出函数calculateHash(file,type){
const testfile = fs.readFileSync(file);
var sha1sum = crypto.createHash('sha1').update(testFile).digest(hex);
console.log(sha1sum);
}
In my node.js app I would like to upload a file and calculate the sha1 .
I tried the following :
export function calculateHash(file, type){
const reader = new FileReader();
var hash = crypto.createHash('sha1');
hash.setEncoding('hex');
const testfile = reader.readAsDataURL(file);
hash.write(testfile);
hash.end();
var sha1sum = hash.read();
console.log(sha1sum);
// fd.on((end) => {
// hash.end();
// const test = hash.read();
// });
}
The file is blob from selecting a file with a file upload button on my website.
How can I calculate the sha1 hash?
解决方案
if you're reading the contents in as a block, you're making this harder than it needs to be. We do this:
const fs = require('fs');
export function calculateHash(file, type){
const testfile = fs.readFileSync(file);
var sha1sum = crypto.createHash('sha1').update(testFile).digest("hex");
console.log(sha1sum);
}
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