compact1, compact2, compact3
java.security.spec
Class MGF1ParameterSpec
- 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:
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PSSParameterSpec,OAEPParameterSpec
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Field Summary
Fields Modifier and Type Field and 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 Summary
Constructors Constructor and 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 and Description StringgetDigestAlgorithm()Returns the algorithm name of the message digest used by the mask generation function.
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Field Detail
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
SHA512_224
public static final MGF1ParameterSpec SHA512_224
The MGF1ParameterSpec which uses SHA-512/224 message digest- API Note:
- This field is defined in Java SE 8 Maintenance Release 3.
- Since:
- 8
SHA512_256
public static final MGF1ParameterSpec SHA512_256
The MGF1ParameterSpec which uses SHA-512/256 message digest- API Note:
- This field is defined in Java SE 8 Maintenance Release 3.
- Since:
- 8
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Constructor Detail
MGF1ParameterSpec
public MGF1ParameterSpec(String mdName)
Constructs a parameter set for mask generation function MGF1 as defined in the PKCS #1 standard.- Parameters:
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mdName- the algorithm name for the message digest used in this mask generation function MGF1. - Throws:
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NullPointerException- ifmdNameis null.
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Method Detail
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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