This class specifies a parameter spec for RSA-PSS signature scheme,
as defined in the
PKCS#1 v2.1 standard.
Its ASN.1 definition in PKCS#1 standard is described below:
RSASSA-PSS-params ::= SEQUENCE {
hashAlgorithm [0] OAEP-PSSDigestAlgorithms DEFAULT sha1,
maskGenAlgorithm [1] PKCS1MGFAlgorithms DEFAULT mgf1SHA1,
saltLength [2] INTEGER DEFAULT 20,
trailerField [3] INTEGER DEFAULT 1
}
where
OAEP-PSSDigestAlgorithms ALGORITHM-IDENTIFIER ::= {
{ OID id-sha1 PARAMETERS NULL }|
{ OID id-sha256 PARAMETERS NULL }|
{ OID id-sha384 PARAMETERS NULL }|
{ OID id-sha512 PARAMETERS NULL },
... -- Allows for future expansion --
}
PKCS1MGFAlgorithms ALGORITHM-IDENTIFIER ::= {
{ OID id-mgf1 PARAMETERS OAEP-PSSDigestAlgorithms },
... -- Allows for future expansion --
}
Note: the PSSParameterSpec.DEFAULT uses the following:
message digest -- "SHA-1"
mask generation function (mgf) -- "MGF1"
parameters for mgf -- MGF1ParameterSpec.SHA1
SaltLength -- 20
TrailerField -- 1 |