- java.lang.Object
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- java.security.spec.MGF1ParameterSpec
 
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- All Implemented Interfaces:
- 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 -- }whereHashAlgorithm ::= 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:
- PSSParameterSpec,- OAEPParameterSpec
 
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Field SummaryFields Modifier and Type Field Description static MGF1ParameterSpecSHA1The MGF1ParameterSpec which uses "SHA-1" message digeststatic MGF1ParameterSpecSHA224The MGF1ParameterSpec which uses "SHA-224" message digeststatic MGF1ParameterSpecSHA256The MGF1ParameterSpec which uses "SHA-256" message digeststatic MGF1ParameterSpecSHA384The MGF1ParameterSpec which uses "SHA-384" message digeststatic MGF1ParameterSpecSHA512The MGF1ParameterSpec which uses SHA-512 message digeststatic MGF1ParameterSpecSHA512_224The MGF1ParameterSpec which uses SHA-512/224 message digeststatic MGF1ParameterSpecSHA512_256The MGF1ParameterSpec which uses SHA-512/256 message digest
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Constructor SummaryConstructors Constructor Description MGF1ParameterSpec(String mdName)Constructs a parameter set for mask generation function MGF1 as defined in the PKCS #1 standard.
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Method SummaryAll Methods Instance Methods Concrete Methods Modifier and Type Method Description StringgetDigestAlgorithm()Returns the algorithm name of the message digest used by the mask generation function.
 
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Field Detail- 
SHA1public static final MGF1ParameterSpec SHA1 The MGF1ParameterSpec which uses "SHA-1" message digest
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SHA224public static final MGF1ParameterSpec SHA224 The MGF1ParameterSpec which uses "SHA-224" message digest
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SHA256public static final MGF1ParameterSpec SHA256 The MGF1ParameterSpec which uses "SHA-256" message digest
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SHA384public static final MGF1ParameterSpec SHA384 The MGF1ParameterSpec which uses "SHA-384" message digest
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SHA512public static final MGF1ParameterSpec SHA512 The MGF1ParameterSpec which uses SHA-512 message digest
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SHA512_224public static final MGF1ParameterSpec SHA512_224 The MGF1ParameterSpec which uses SHA-512/224 message digest
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SHA512_256public static final MGF1ParameterSpec SHA512_256 The MGF1ParameterSpec which uses SHA-512/256 message digest
 
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Constructor Detail- 
MGF1ParameterSpecpublic MGF1ParameterSpec(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:
- NullPointerException- if- mdNameis null.
 
 
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Method Detail- 
getDigestAlgorithmpublic String getDigestAlgorithm() Returns the algorithm name of the message digest used by the mask generation function.- Returns:
- the algorithm name of the message digest.
 
 
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