java.security.spec

Class MGF1ParameterSpec

java.lang.Object

java.security.spec.MGF1ParameterSpec

All Implemented Interfaces:

AlgorithmParameterSpec

public class MGF1ParameterSpec
extends java.lang.Object
implements AlgorithmParameterSpec

This class specifies the set of parameters used with mask generation function MGF1 in OAEP Padding and RSASSA-PSS signature scheme, as defined in the PKCS#1 v2.2 standard.

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

 PKCS1MGFAlgorithms    ALGORITHM-IDENTIFIER ::= {
   { OID id-mgf1 PARAMETERS HashAlgorithm },
   ...  -- Allows for future expansion --
 }
 

where

 HashAlgorithm ::= AlgorithmIdentifier {
   {OAEP-PSSDigestAlgorithms}
 }

 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 --
 }
 

Since:

1.5

See Also:

OAEPParameterSpec

Field Summary

Fields

Modifier and Type	Field and Description
static MGF1ParameterSpec	SHA1 The MGF1ParameterSpec uses a "SHA-1" message digest.
static MGF1ParameterSpec	SHA224 The MGF1ParameterSpec uses a "SHA-224" message digest.
static MGF1ParameterSpec	SHA256 The MGF1ParameterSpec uses a "SHA-256" message digest.
static MGF1ParameterSpec	SHA3_224 The MGF1ParameterSpec uses a "SHA3-224" message digest.
static MGF1ParameterSpec	SHA3_256 The MGF1ParameterSpec uses a "SHA3-256" message digest.
static MGF1ParameterSpec	SHA3_384 The MGF1ParameterSpec uses a "SHA3-384" message digest.
static MGF1ParameterSpec	SHA3_512 The MGF1ParameterSpec uses a "SHA3-512" message digest.
static MGF1ParameterSpec	SHA384 The MGF1ParameterSpec uses a "SHA-384" message digest.
static MGF1ParameterSpec	SHA512 The MGF1ParameterSpec uses a "SHA-512" message digest.
static MGF1ParameterSpec	SHA512_224 The MGF1ParameterSpec uses a "SHA-512/224" message digest.
static MGF1ParameterSpec	SHA512_256 The MGF1ParameterSpec uses a "SHA-512/256" message digest.

Constructor Summary

Constructors

Constructor and Description
MGF1ParameterSpec(java.lang.String mdName) Constructs a parameter set for mask generation function MGF1 as defined in the PKCS #1 standard.

Method Summary

Modifier and Type	Method and Description
java.lang.String	getDigestAlgorithm() Returns the algorithm name of the message digest used by the mask generation function.
java.lang.String	toString()

Methods inherited from class java.lang.Object

clone, equals, getClass, hashCode, notify, notifyAll, wait, wait, wait

Field Detail

SHA1

public static final MGF1ParameterSpec SHA1

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

SHA224

public static final MGF1ParameterSpec SHA224

The MGF1ParameterSpec uses a "SHA-224" message digest.

SHA256

public static final MGF1ParameterSpec SHA256

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

SHA384

public static final MGF1ParameterSpec SHA384

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

SHA512

public static final MGF1ParameterSpec SHA512

The MGF1ParameterSpec uses a "SHA-512" message digest.

SHA512_224

public static final MGF1ParameterSpec SHA512_224

The MGF1ParameterSpec uses a "SHA-512/224" message digest.

Since:

11

SHA512_256

public static final MGF1ParameterSpec SHA512_256

The MGF1ParameterSpec uses a "SHA-512/256" message digest.

Since:

11

SHA3_224

public static final MGF1ParameterSpec SHA3_224

The MGF1ParameterSpec uses a "SHA3-224" message digest.

Since:

16

SHA3_256

public static final MGF1ParameterSpec SHA3_256

The MGF1ParameterSpec uses a "SHA3-256" message digest.

Since:

16

SHA3_384

public static final MGF1ParameterSpec SHA3_384

The MGF1ParameterSpec uses a "SHA3-384" message digest.

Since:

16

SHA3_512

public static final MGF1ParameterSpec SHA3_512

The MGF1ParameterSpec uses a "SHA3-512" message digest.

Since:

16

Constructor Detail

MGF1ParameterSpec

public MGF1ParameterSpec(java.lang.String mdName)

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:

java.lang.NullPointerException - if mdName is null.

Method Detail

getDigestAlgorithm

public java.lang.String getDigestAlgorithm()

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

Returns:

the algorithm name of the message digest.

toString

public java.lang.String toString()

Overrides:

toString in class java.lang.Object