public class MGF1ParameterSpec extends Object implements AlgorithmParameterSpec
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 --
 }
 PSSParameterSpec, 
OAEPParameterSpec| Modifier and Type | Field and Description | 
|---|---|
| static MGF1ParameterSpec | SHA1The MGF1ParameterSpec which uses "SHA-1" message digest | 
| static MGF1ParameterSpec | SHA224The MGF1ParameterSpec which uses "SHA-224" message digest | 
| static MGF1ParameterSpec | SHA256The MGF1ParameterSpec which uses "SHA-256" message digest | 
| static MGF1ParameterSpec | SHA384The MGF1ParameterSpec which uses "SHA-384" message digest | 
| static MGF1ParameterSpec | SHA512The MGF1ParameterSpec which uses SHA-512 message digest | 
| static MGF1ParameterSpec | SHA512_224The MGF1ParameterSpec which uses SHA-512/224 message digest | 
| static MGF1ParameterSpec | SHA512_256The MGF1ParameterSpec which uses SHA-512/256 message digest | 
| Constructor and Description | 
|---|
| MGF1ParameterSpec(String mdName)Constructs a parameter set for mask generation function MGF1
 as defined in the PKCS #1 standard. | 
| Modifier and Type | Method and Description | 
|---|---|
| String | getDigestAlgorithm()Returns the algorithm name of the message digest used by the mask
 generation function. | 
public static final MGF1ParameterSpec SHA1
public static final MGF1ParameterSpec SHA224
public static final MGF1ParameterSpec SHA256
public static final MGF1ParameterSpec SHA384
public static final MGF1ParameterSpec SHA512
public static final MGF1ParameterSpec SHA512_224
public static final MGF1ParameterSpec SHA512_256
public MGF1ParameterSpec(String mdName)
mdName - the algorithm name for the message digest
 used in this mask generation function MGF1.NullPointerException - if mdName is null.public String getDigestAlgorithm()
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