MGF1ParameterSpec JDK 1.6)

Description

public class MGF1ParameterSpec

This class specifies the set of parameters used with mask generation function MGF1 in OAEP Padding and RSA-PSS signature scheme, as defined in the PKCS #1 v2.1 standard.

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

 MGF1Parameters ::= OAEP-PSSDigestAlgorthms

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 --
 }

See also: PSSParameterSpec OAEPParameterSpec

Constructors

public MGF1ParameterSpec (String mdName)

Constructs a parameter set for mask generation function MGF1 as defined in the PKCS #1 standard.

Constructs a parameter set for mask generation function MGF1
as defined in the PKCS #1 standard.
Parameters:
- mdName - the algorithm name for the message digest used in this mask generation function MGF1.
Throws:
- NullPointerException - if mdName is null.

Methods

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public String getDigestAlgorithm ()

Returns the algorithm name of the message digest used by the mask generation function.

Fields

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publicfinalstatic MGF1ParameterSpec SHA1

The MGF1ParameterSpec which uses "SHA-1" message digest.

publicfinalstatic MGF1ParameterSpec SHA256

The MGF1ParameterSpec which uses "SHA-256" message digest.

publicfinalstatic MGF1ParameterSpec SHA384

The MGF1ParameterSpec which uses "SHA-384" message digest.

publicfinalstatic MGF1ParameterSpec SHA512

The MGF1ParameterSpec which uses SHA-512 message digest.