crypto.createSign(algorithm[, options])

• algorithm <string>

• options <Object> stream.Writable 选项

  ¥options <Object> stream.Writable options

• 返回：<Sign>

  ¥Returns: <Sign>

创建并返回使用给定的 algorithm 的 Sign 对象。使用 crypto.getHashes() 获取可用摘要算法的名称。可选的 options 参数控制 stream.Writable 行为。

¥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.

在某些情况下，可以使用签名算法的名称（例如 'RSA-SHA256'）而不是摘要算法来创建 Sign 实例。这将使用相应的摘要算法。这不适用于所有签名算法，例如 'ecdsa-with-SHA256'，因此最好始终使用摘要算法名称。

¥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.