The RsaPssParams dictionary of the Web Crypto API represents the object that should be passed as the algorithm parameter into SubtleCrypto.sign() or SubtleCrypto.verify(), when using the RSA-PSS algorithm.
Properties
name- A
DOMString. This should be set toRSA-PSS. saltLength-
A
longinteger 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
saltLengthis 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 SubtleCrypto.sign() and SubtleCrypto.verify().
Specifications
| Specification | Status | Comment |
|---|---|---|
| Web Cryptography API The definition of 'SubtleCrypto.RsaPssParams' in that specification. |
Recommendation |
Browser compatibility
Browsers that support the "RSA-PSS" algorithm for the SubtleCrypto.sign() and SubtleCrypto.verify() methods will support this type.