digest string in crypto.pbkdf2

[fabioce]

I notice an error using the:
LambdAuthCreateUser

this piece of code:

crypto.pbkdf2(password, salt, iterations, len, function(err, derivedKey) {
if (err) return fn(err);
fn(null, salt, derivedKey.toString('base64'));
});

don't work if I don't add after len a digest string, for example null

crypto.pbkdf2(password, salt, iterations, len, null, function(err, derivedKey) {
if (err) return fn(err);
fn(null, salt, derivedKey.toString('base64'));
});

Is it just my problem?

[lmiguelmh]

According the Nodejs documentation for pbkdf2 function:

crypto.pbkdf2(password, salt, iterations, keylen, digest, callback)
[...]
If digest is null, 'sha1' will be used. This behavior is deprecated, please specify a digest explicitly.

So, I think the problem is that init.sh is specifying an old version of Nodejs and in new versions they changed the signature of pbkdf2 function.

LambdAuth/init.sh

Lines 140 to 145 in ef2e828

	aws lambda create-function --function-name ${f} \
	--runtime nodejs4.3 \
	--role arn:aws:iam::"$AWS_ACCOUNT_ID":role/${f} \
	--handler index.handler \
	--zip-file fileb://${f}.zip \
	--region $REGION