Class OAEPParameterSpec 
java.lang.Object javax.crypto.spec.OAEPParameterSpec    All Implemented Interfaces: AlgorithmParameterSpec  public class OAEPParameterSpec extends Object implements AlgorithmParameterSpec This class specifies the set of parameters used with OAEP Padding, as defined in the PKCS#1 v2.2 standard. Its ASN.1 definition in PKCS#1 standard is described below: 
 RSAES-OAEP-params 8b7c:f320:99b9:690f:4595:cd17:293a:c069= SEQUENCE {
   hashAlgorithm      [0] HashAlgorithm     DEFAULT sha1,
   maskGenAlgorithm   [1] MaskGenAlgorithm  DEFAULT mgf1SHA1,
   pSourceAlgorithm   [2] PSourceAlgorithm  DEFAULT pSpecifiedEmpty
 }
  where 
 HashAlgorithm 8b7c:f320:99b9:690f:4595:cd17:293a:c069= AlgorithmIdentifier {
   {OAEP-PSSDigestAlgorithms}
 }
 MaskGenAlgorithm 8b7c:f320:99b9:690f:4595:cd17:293a:c069= AlgorithmIdentifier { {PKCS1MGFAlgorithms} }
 PSourceAlgorithm 8b7c:f320:99b9:690f:4595:cd17:293a:c069= AlgorithmIdentifier {
   {PKCS1PSourceAlgorithms}
 }

 OAEP-PSSDigestAlgorithms    ALGORITHM-IDENTIFIER 8b7c:f320:99b9:690f:4595:cd17:293a:c069= {
   { 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 --
 }
 PKCS1MGFAlgorithms    ALGORITHM-IDENTIFIER 8b7c:f320:99b9:690f:4595:cd17:293a:c069= {
   { OID id-mgf1 PARAMETERS HashAlgorithm },
   ...  -- Allows for future expansion --
 }
 PKCS1PSourceAlgorithms    ALGORITHM-IDENTIFIER 8b7c:f320:99b9:690f:4595:cd17:293a:c069= {
   { OID id-pSpecified PARAMETERS EncodingParameters },
   ...  -- Allows for future expansion --
 }
 EncodingParameters 8b7c:f320:99b9:690f:4595:cd17:293a:c069= OCTET STRING(SIZE(0..MAX))
  Note: the OAEPParameterSpec.DEFAULT uses the following: 

     message digest  -- "SHA-1"
     mask generation function (mgf) -- "MGF1"
     parameters for mgf -- MGF1ParameterSpec.SHA1
     source of encoding input -- PSource.PSpecified.DEFAULT
 
  Since: 1.5 See Also:   MGF1ParameterSpec PSource       Field Summary  
Modifier and Type
Field
Description


static final OAEPParameterSpec
DEFAULT
 The OAEP parameter set with all default values. 

  Constructor Summary  
Constructor
Description


OAEPParameterSpec(String mdName,
 String mgfName,
 AlgorithmParameterSpec mgfSpec,
 PSource pSrc)
 Constructs a parameter set for OAEP padding as defined in the PKCS #1 standard using the specified message digest algorithm mdName, mask generation function algorithm mgfName, parameters for the mask generation function mgfSpec, and source of the encoding input P pSrc. 

  Method Summary    
Modifier and Type
Method
Description


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. 


PSource
getPSource()
 Returns the source of encoding input P. 

    Methods declared in class java.lang.Object
 clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait
     Field Details  DEFAULT public static final OAEPParameterSpec DEFAULT The OAEP parameter set with all default values.  Constructor Details  OAEPParameterSpec public OAEPParameterSpec(String mdName, String mgfName, AlgorithmParameterSpec mgfSpec, PSource pSrc) Constructs a parameter set for OAEP padding as defined in the PKCS #1 standard using the specified message digest algorithm mdName, mask generation function algorithm mgfName, parameters for the mask generation function mgfSpec, and source of the encoding input P pSrc.  Parameters: 
mdName - the algorithm name for the message digest. 
mgfName - the algorithm name for the mask generation function. 
mgfSpec - the parameters for the mask generation function. If null is specified, null will be returned by getMGFParameters(). 
pSrc - the source of the encoding input P. Throws: 
NullPointerException - if mdName, mgfName, or pSrc is null.   Method Details  getDigestAlgorithm public String getDigestAlgorithm() Returns the message digest algorithm name.  Returns: the message digest algorithm name.   getMGFAlgorithm public String getMGFAlgorithm() Returns the mask generation function algorithm name.  Returns: the mask generation function algorithm name.   getMGFParameters public AlgorithmParameterSpec getMGFParameters() Returns the parameters for the mask generation function.  Returns: the parameters for the mask generation function.   getPSource public PSource getPSource() Returns the source of encoding input P.  Returns: the source of encoding input P.   

    
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