util.rsaSign()

`util.rsaSign()`

Signs data with RSA-PSS and SHA-256 asynchronously. PEM import and input conversion can still occupy the event loop.

static rsaSign(
      privateKey: string,
      payload: string,
      passphrase?: string,
    ): Promise<string>;

const signature = await util.rsaSign(privateKey, 'hello', passphrase);

Last modified on November 8, 2026