RFC 3447 says that "Typical salt lengths" are either 0 or the length of the output of the digest algorithm that was selected when this key was generated. For example, if you use SHA-256 as the digest algorithm, this could be 32.
https://developer.mozilla.org/en-US/docs/Web/API/RsaPssParams
RFC 3447 says that "Typical salt lengths" are either 0 or the length of the output of the digest algorithm that was selected when this key was generated. For example, if you use SHA-256 as the digest algorithm, this could be 32.