PSSParameterSpec

open class PSSParameterSpec : AlgorithmParameterSpec

This class specifies a parameter spec for RSASSA-PSS signature scheme, as defined in the PKCS#1 v2.2 standard.

Its ASN.1 definition in PKCS#1 standard is described below:

RSASSA-PSS-params ::= SEQUENCE {
    hashAlgorithm      [0] HashAlgorithm      DEFAULT sha1,
    maskGenAlgorithm   [1] MaskGenAlgorithm   DEFAULT mgf1SHA1,
    saltLength         [2] INTEGER            DEFAULT 20,
    trailerField       [3] TrailerField       DEFAULT trailerFieldBC(1)
  }
  

HashAlgorithm ::= AlgorithmIdentifier {
    {OAEP-PSSDigestAlgorithms}
  }
  MaskGenAlgorithm ::= AlgorithmIdentifier { {PKCS1MGFAlgorithms} }
  TrailerField ::= INTEGER { trailerFieldBC(1) }
 
  OAEP-PSSDigestAlgorithms    ALGORITHM-IDENTIFIER ::= {
    { OID id-sha1       PARAMETERS NULL }|
    { OID id-sha224     PARAMETERS NULL }|
    { OID id-sha256     PARAMETERS NULL }|
    { OID id-sha384     PARAMETERS NULL }|
    { OID id-sha512     PARAMETERS NULL }|
    { OID id-sha512-224 PARAMETERS NULL }|
    { OID id-sha512-256 PARAMETERS NULL },
    ...  -- Allows for future expansion --
  }
  PKCS1MGFAlgorithms    ALGORITHM-IDENTIFIER ::= {
    { OID id-mgf1 PARAMETERS HashAlgorithm },
    ...  -- 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

Summary

Constants

static val TRAILER_FIELD_BC: Int

Value: 1

Public constructors

PSSParameterSpec(
    mdName: String!, 
    mgfName: String!, 
    mgfSpec: AlgorithmParameterSpec!, 
    saltLen: Int, 
    trailerField: Int)

PSSParameterSpec(saltLen: Int)

Public methods

open fun getDigestAlgorithm(): String!

open fun getMGFAlgorithm(): String!

open fun getMGFParameters(): AlgorithmParameterSpec!

open fun getSaltLength(): Int

open fun getTrailerField(): Int

open fun toString(): String

Properties

static val DEFAULT: PSSParameterSpec!