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doc: show keylen in pbkdf2 as a byte length #3334

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doc: show keylen in pbkdf2 as a byte length #3334

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4 changes: 2 additions & 2 deletions doc/api/crypto.markdown
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Expand Up @@ -621,13 +621,13 @@ Example (obtaining a shared secret):
## crypto.pbkdf2(password, salt, iterations, keylen[, digest], callback)

Asynchronous PBKDF2 function. Applies the selected HMAC digest function
(default: SHA1) to derive a key of the requested length from the password,
(default: SHA1) to derive a key of the requested byte length from the password,
salt and number of iterations. The callback gets two arguments:
`(err, derivedKey)`.

Example:

crypto.pbkdf2('secret', 'salt', 4096, 512, 'sha256', function(err, key) {
crypto.pbkdf2('secret', 'salt', 4096, 64, 'sha256', function(err, key) {
if (err)
throw err;
console.log(key.toString('hex')); // 'c5e478d...1469e50'
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