crypto.createSign(algorithm[, options])

• algorithm {string}
• options {Object} [stream.Writable options][]
• Returns: {Sign}

Creates and returns a Sign object that uses the given algorithm. Use [crypto.getHashes()][] to obtain the names of the available digest algorithms. Optional options argument controls the stream.Writable behavior.

In some cases, a Sign instance can be created using the name of a signature algorithm, such as 'RSA-SHA256', instead of a digest algorithm. This will use the corresponding digest algorithm. This does not work for all signature algorithms, such as 'ecdsa-with-SHA256', so it is best to always use digest algorithm names.

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