- 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 Summary
Fields Modifier and Type Field Description static MGF1ParameterSpec
SHA1
The MGF1ParameterSpec which uses "SHA-1" message digeststatic MGF1ParameterSpec
SHA224
The MGF1ParameterSpec which uses "SHA-224" message digeststatic MGF1ParameterSpec
SHA256
The MGF1ParameterSpec which uses "SHA-256" message digeststatic MGF1ParameterSpec
SHA384
The MGF1ParameterSpec which uses "SHA-384" message digeststatic MGF1ParameterSpec
SHA512
The MGF1ParameterSpec which uses SHA-512 message digeststatic MGF1ParameterSpec
SHA512_224
The MGF1ParameterSpec which uses SHA-512/224 message digeststatic MGF1ParameterSpec
SHA512_256
The MGF1ParameterSpec which uses SHA-512/256 message digest
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Constructor Summary
Constructors 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 Summary
All Methods Instance Methods Concrete Methods Modifier and Type Method Description String
getDigestAlgorithm()
Returns the algorithm name of the message digest used by the mask generation function.
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Field Detail
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SHA1
public static final MGF1ParameterSpec SHA1
The MGF1ParameterSpec which uses "SHA-1" message digest
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SHA224
public static final MGF1ParameterSpec SHA224
The MGF1ParameterSpec which uses "SHA-224" message digest
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SHA256
public static final MGF1ParameterSpec SHA256
The MGF1ParameterSpec which uses "SHA-256" message digest
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SHA384
public static final MGF1ParameterSpec SHA384
The MGF1ParameterSpec which uses "SHA-384" message digest
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SHA512
public static final MGF1ParameterSpec SHA512
The MGF1ParameterSpec which uses SHA-512 message digest
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SHA512_224
public static final MGF1ParameterSpec SHA512_224
The MGF1ParameterSpec which uses SHA-512/224 message digest
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SHA512_256
public static final MGF1ParameterSpec SHA512_256
The MGF1ParameterSpec which uses SHA-512/256 message digest
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Constructor Detail
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MGF1ParameterSpec
public 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
- ifmdName
is null.
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Method Detail
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getDigestAlgorithm
public 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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