程序包 java.security.spec

类 MGF1ParameterSpec

java.lang.Object

java.security.spec.MGF1ParameterSpec

所有已实现的接口:

AlgorithmParameterSpec

public class MGF1ParameterSpec
extends 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 --
 }
 

从以下版本开始:

1.5

另请参阅:

PSSParameterSpec, OAEPParameterSpec

字段概要

字段

限定符和类型	字段	说明
static MGF1ParameterSpec	SHA1	The MGF1ParameterSpec which uses "SHA-1" message digest
static MGF1ParameterSpec	SHA224	The MGF1ParameterSpec which uses "SHA-224" message digest
static MGF1ParameterSpec	SHA256	The MGF1ParameterSpec which uses "SHA-256" message digest
static MGF1ParameterSpec	SHA384	The MGF1ParameterSpec which uses "SHA-384" message digest
static MGF1ParameterSpec	SHA512	The MGF1ParameterSpec which uses SHA-512 message digest

构造器概要

构造器

构造器	说明
MGF1ParameterSpec(String mdName)	Constructs a parameter set for mask generation function MGF1 as defined in the PKCS #1 standard.

方法概要

限定符和类型	方法	说明
String	getDigestAlgorithm()	Returns the algorithm name of the message digest used by the mask generation function.

从类继承的方法 java.lang.Object

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

字段详细资料

SHA1

public static final MGF1ParameterSpec SHA1

The MGF1ParameterSpec which uses "SHA-1" message digest

SHA224

public static final MGF1ParameterSpec SHA224

The MGF1ParameterSpec which uses "SHA-224" message digest

SHA256

public static final MGF1ParameterSpec SHA256

The MGF1ParameterSpec which uses "SHA-256" message digest

SHA384

public static final MGF1ParameterSpec SHA384

The MGF1ParameterSpec which uses "SHA-384" message digest

SHA512

public static final MGF1ParameterSpec SHA512

The MGF1ParameterSpec which uses SHA-512 message digest

构造器详细资料

MGF1ParameterSpec

public MGF1ParameterSpec(String mdName)

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

参数:

mdName - the algorithm name for the message digest used in this mask generation function MGF1.

抛出:

NullPointerException - if mdName is null.

方法详细资料

getDigestAlgorithm

public String getDigestAlgorithm()

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

返回:

the algorithm name of the message digest.