All Implemented Interfaces:

AlgorithmParameterSpec

public class PSSParameterSpec
extends Object
implements AlgorithmParameterSpec 

 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
 }
 

 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 },
 ... -- Allows for future expansion --
 }
 PKCS1MGFAlgorithms ALGORITHM-IDENTIFIER ::= {
 { OID id-mgf1 PARAMETERS OAEP-PSSDigestAlgorithms },
 ... -- Allows for future expansion --
 }
 

Since:

1.4

See Also:

MGF1ParameterSpec, AlgorithmParameterSpec, Signature

• Field Summary

  Fields

  Modifier and Type	Field and Description
  static PSSParameterSpec	DEFAULT The PSS parameter set with all default values.

• Constructor Summary

  Constructors

  Constructor and Description
  PSSParameterSpec (int saltLen) Creates a new PSSParameterSpec using the specified salt length and other default values as defined in PKCS#1.
  PSSParameterSpec (String mdName, String mgfName, AlgorithmParameterSpec mgfSpec, int saltLen, int trailerField) 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

  Methods

  Modifier and Type	Method and 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.
  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

    clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

• Field Detail

  • DEFAULT

    public static final PSSParameterSpec DEFAULT

    The PSS parameter set with all default values.

    Since:

    1.5

• Constructor Detail

  • PSSParameterSpec

    public PSSParameterSpec(String mdName,
     String mgfName,
     AlgorithmParameterSpec mgfSpec,
     int saltLen,
     int trailerField)

    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.

    Parameters:

    mdName - the algorithm name of the hash function.

    mgfName - the algorithm name of the mask generation function.

    mgfSpec - the parameters for the mask generation function. If null is specified, null will be returned by getMGFParameters().

    saltLen - the length of salt.

    trailerField - the value of the trailer field.

    Throws:

    NullPointerException - if mdName, or mgfName is null.

    IllegalArgumentException - if saltLen or trailerField is less than 0.

    Since:

    1.5

  • PSSParameterSpec

    public PSSParameterSpec(int saltLen)

    Creates a new PSSParameterSpec using the specified salt length and other default values as defined in PKCS#1.

    Parameters:

    saltLen - the length of salt in bits to be used in PKCS#1 PSS encoding.

    Throws:

    IllegalArgumentException - if saltLen is less than 0.

• Method Detail

  • getDigestAlgorithm

    public String getDigestAlgorithm()

    Returns the message digest algorithm name.

    Returns:

    the message digest algorithm name.

    Since:

    1.5

  • getMGFAlgorithm

    public String getMGFAlgorithm()

    Returns the mask generation function algorithm name.

    Returns:

    the mask generation function algorithm name.

    Since:

    1.5

  • getMGFParameters

    public AlgorithmParameterSpec getMGFParameters()

    Returns the parameters for the mask generation function.

    Returns:

    the parameters for the mask generation function.

    Since:

    1.5

  • getSaltLength

    public int getSaltLength()

    Returns the salt length in bits.

    Returns:

    the salt length.

  • getTrailerField

    public int getTrailerField()

    Returns the value for the trailer field, i.e. bc in PKCS#1 v2.1.

    Returns:

    the value for the trailer field, i.e. bc in PKCS#1 v2.1.

    Since:

    1.5