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javax.crypto.spec
public class: OAEPParameterSpec [javadoc | source]
java.lang.Object
   javax.crypto.spec.OAEPParameterSpec

All Implemented Interfaces:
    AlgorithmParameterSpec

This class specifies the set of parameters used with OAEP Padding, as defined in the PKCS #1 standard. Its ASN.1 definition in PKCS#1 standard is described below:
RSAES-OAEP-params ::= SEQUENCE {
  hashAlgorithm      [0] OAEP-PSSDigestAlgorithms     DEFAULT sha1,
  maskGenAlgorithm   [1] PKCS1MGFAlgorithms  DEFAULT mgf1SHA1,
  pSourceAlgorithm   [2] PKCS1PSourceAlgorithms  DEFAULT pSpecifiedEmpty
}
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 --
}
PKCS1PSourceAlgorithms    ALGORITHM-IDENTIFIER ::= {
  { OID id-pSpecified PARAMETERS OCTET STRING },
  ...  -- Allows for future expansion --
}

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

Field Summary
public static final  OAEPParameterSpec DEFAULT    The OAEP parameter set with all default values. 
Constructor:
 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.
    exception: NullPointerException - if mdName, mgfName, or pSrc is null.
Method from javax.crypto.spec.OAEPParameterSpec Summary:
getDigestAlgorithm,   getMGFAlgorithm,   getMGFParameters,   getPSource
Methods from java.lang.Object:
clone,   equals,   finalize,   getClass,   hashCode,   notify,   notifyAll,   toString,   wait,   wait,   wait
Method from javax.crypto.spec.OAEPParameterSpec Detail:
 public String getDigestAlgorithm() 
    Returns the message digest algorithm name.
 public String getMGFAlgorithm() 
    Returns the mask generation function algorithm name.
 public AlgorithmParameterSpec getMGFParameters() 
    Returns the parameters for the mask generation function.
 public PSource getPSource() 
    Returns the source of encoding input P.