RsaPssParams

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

特性

name
A DOMString . 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.

范例

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

规范

规范 状态 Comment
Web Cryptography API
The definition of 'SubtleCrypto.RsaPssParams' in that specification.
Recommendation

浏览器兼容性

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

另请参阅