RsaPssParams

The RsaPssParams dictionary of the Web Crypto API represents the object that should be passed as the algorithm parameter into sign() or verify(), when using the RSA-PSS algorithm.

Instance properties

• name
  • : A string. This should be set to RSA-PSS.
• saltLength

  • : A long integer representing the length of the random salt to use, in bytes.

    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.

    The maximum size of saltLength is given by:

    Math.ceil((keySizeInBits - 1) / 8) - digestSizeInBytes - 2;
    

    So for a key length of 2048 bits and a digest output size of 32 bytes, the maximum size would be 222.

Examples

See the examples for sign() and verify().

Specifications

Browser compatibility

Browsers that support the “RSA-PSS” algorithm for the sign() and verify() methods will support this type.

See also

• RFC 3447: RSASSA-PSS