CODEWITHSUNDEEP
node.jssha
cogitoergosum
cogitoergosum

Reputation: 2471

nodejs - shasum mismatch

There must be something simple I am missing. I am not sure, why the SHA sums wouldn't match. The sums are generated with nodejs and shasum on Linux command line.

user@host:~$ nodejs
> var c = require('crypto')
undefined
> c.createHash('sha1').update('Hello world!','ascii').digest('hex')
'd3486ae9136e7856bc42212385ea797094475802'

user@host:~$ shasum -
Hello world!
47a013e660d408619d894b20806b1d5086aab03b  -

I did try with different options such as ascii and utf-8 with nodejs and shasum; but, mismatch exists. Of course, for simple English text, ascii and utf-8 shouldn't matter.

Although, since the applications generating and using the hashes will be nodejs applications; and, so, it probably wouldn't matter. But, I cannot get around the fact that the sums would be different.

Can you please guide me ?

Upvotes: 1

Views: 654

Answers (1)

thgaskell
thgaskell

Reputation: 13226

Your shasum is getting an extra new line character (\n).

$ echo Hello world! | shasum
47a013e660d408619d894b20806b1d5086aab03b  -
-------------------------------------------
$ node
> var c = require('crypto')
undefined
> c.createHash('sha1').update('Hello world!').digest('hex')
'd3486ae9136e7856bc42212385ea797094475802'
> c.createHash('sha1').update('Hello world!\n').digest('hex')
'47a013e660d408619d894b20806b1d5086aab03b'

Upvotes: 2

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