How to use SHA256 in NodeJS

Question

How to simplely convert a string to SHA256 string in Node.js. And convert a SHA256 string to a normal string?

const shajs = require('sha.js');



console.log('starts');
const code = 'WEASDSAEWEWAEAWEAWEWA';
const normal = 'anne';
const encrypted = shajs('sha256')
    .update(normal)
    .digest('hex');
const unencrypted = shajs('sha256')
    .read(normal)
    .toString('hex');
console.log(normal);
console.log(encrypted);
console.log(unencrypted);
console.log('end');

Where should i put the HASH CODE?

Do you understand that SHA256 is a one-way hash? You can't convert it back to a normal string. Also, in node.js see https://nodejs.org/api/crypto.html#crypto_class_hash which is built-in. — jfriend00, Jul 07 '19 at 21:14
In the other language i used SHA256 i've create a HASH CODE to transform the passwords #define HASH_CODE = 'WEASDSAEWEWAEAWEAWEWA'; SHA256_PassHash(inputtext, HASH_CODE, password, 64); — annety, Jul 07 '19 at 22:09

score 1 · Accepted Answer · answered Jul 08 '19 at 07:12

1

SHA256 is a one-way hash function which means you can only convert a string into a hash value not its reverse. To check password, you need to rehash plain password and compare it with the one you already stored in database.

answered Jul 08 '19 at 07:12

agtabesh

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How to use SHA256 in NodeJS

1 Answers1