java.lang.Object java.security.spec.PSSParameterSpec
This class specifies a parameter spec for
RSA-PSS signature
RSA PSS encoding
scheme, as defined in the
PKCS#1 v2.1
standard.
PKCS#1 v2.1.
Its ASN.1 definition in PKCS#1 standard is described below: RSASSA-PSS-params ::= SEQUENCE { hashAlgorithm [0] OAEP-PSSDigestAlgorithms DEFAULT sha1, maskGenAlgorithm [1] PKCS1MGFAlgorithms DEFAULT mgf1SHA1, saltLength [2] INTEGER DEFAULT 20, trailerField [3] INTEGER DEFAULT 1 } where OAEP-PSSDigestAlgorithms ALGORITHM-IDENTIFIER ::= { { OID id-sha1 PARAMETERS NULL }| { OID id-sha256 PARAMETERS NULL }| { OID id-sha384 PARAMETERS NULL }| { OID id-sha512 PARAMETERS NULL }, ... -- Allows for future expansion -- } PKCS1MGFAlgorithms ALGORITHM-IDENTIFIER ::= { { OID id-mgf1 PARAMETERS OAEP-PSSDigestAlgorithms }, ... -- Allows for future expansion -- }
Note: the PSSParameterSpec.DEFAULT uses the following: message digest -- "SHA-1" mask generation function (mgf) -- "MGF1" parameters for mgf -- MGF1ParameterSpec.SHA1 SaltLength -- 20 TrailerField -- 1
Field Summary | |
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static PSSParameterSpec |
DEFAULT
The PSS parameter set with all default values. |
Constructor Summary | |
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PSSParameterSpec
(int saltLen) Creates a new PSSParameterSpec using |
|
PSSParameterSpec
(
String
mdName,
String
mgfName,
AlgorithmParameterSpec
Creates a new PSSParameterSpec as defined in the PKCS #1 standard using the specified message digest, mask generation function, parameters for mask generation function, salt length, and trailer field values. |
Method Summary | |
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String |
getDigestAlgorithm
()
Returns the message digest algorithm name. |
String |
getMGFAlgorithm
()
Returns the mask generation function algorithm name. |
AlgorithmParameterSpec |
getMGFParameters
()
Returns the parameters for the mask generation function. |
int |
getSaltLength
() Returns the salt length in bits. |
int |
getTrailerField
()
Returns the value for the trailer field, i.e. |
Methods inherited from class java.lang. Object |
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clone , equals , finalize , getClass , hashCode , notify , notifyAll , toString , wait , wait , wait |
Field Detail |
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public static final PSSParameterSpecDEFAULT
Constructor Detail |
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public PSSParameterSpec ( String mdName, String mgfName, AlgorithmParameterSpec mgfSpec, int saltLen, int trailerField)
public PSSParameterSpec(int saltLen)
Method Detail |
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public StringgetDigestAlgorithm ()
public StringgetMGFAlgorithm ()
public AlgorithmParameterSpecgetMGFParameters ()
public int getSaltLength()
public int getTrailerField ()