All Implemented Interfaces:

AlgorithmParameterSpec

public class PSSParameterSpec
extends Object
implements AlgorithmParameterSpec 

 RSASSA-PSS-params ::= SEQUENCE {
 hashAlgorithm [0] HashAlgorithm DEFAULT sha1,
 maskGenAlgorithm [1] MaskGenAlgorithm DEFAULT mgf1SHA1,
 saltLength [2] INTEGER DEFAULT 20,
 trailerField [3] TrailerField DEFAULT trailerFieldBC(1)
 }
 

 HashAlgorithm ::= AlgorithmIdentifier {
 {OAEP-PSSDigestAlgorithms}
 }
 MaskGenAlgorithm ::= AlgorithmIdentifier { {PKCS1MGFAlgorithms} }
 TrailerField ::= INTEGER { trailerFieldBC(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 }|
 { OID id-sha512-224 PARAMETERS NULL }|
 { OID id-sha512-256 PARAMETERS NULL },
 ... -- Allows for future expansion --
 }
 PKCS1MGFAlgorithms ALGORITHM-IDENTIFIER ::= {
 { OID id-mgf1 PARAMETERS HashAlgorithm },
 ... -- Allows for future expansion --
 }
 

Since:

1.4

See Also:

MGF1ParameterSpec, AlgorithmParameterSpec, Signature

• Field Summary

  Fields

  Modifier and Type	Field	Description
  static PSSParameterSpec	DEFAULT	The PSS parameter set with all default values
  static int	TRAILER_FIELD_BC	The TrailerFieldBC constant as defined in PKCS#1

• Constructor Summary

  Constructors

  Constructor	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

  All Methods

  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.
  int	getSaltLength ()	Returns the salt length in bytes.
  int	getTrailerField ()	Returns the value for the trailer field.
  String	toString ()	Returns a string representation of the object.

  • Methods inherited from class java.lang.Object

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

• Field Detail

  • TRAILER_FIELD_BC

    public static final int TRAILER_FIELD_BC

    The TrailerFieldBC constant as defined in PKCS#1

    API Note:

    This field is defined in Java SE 8 Maintenance Release 3.

    Since:

    8

    See Also:

    Constant Field Values

  • 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 bytes 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 bytes.

    Returns:

    the salt length

  • getTrailerField

    public int getTrailerField()

    Returns the value for the trailer field.

    Returns:

    the value for the trailer field

    Since:

    1.5

  • toString

    public String toString()

    Description copied from class: Object
    Returns a string representation of the object. In general, the toString method returns a string that "textually represents" this object. The result should be a concise but informative representation that is easy for a person to read. It is recommended that all subclasses override this method.

    The toString method for class Object returns a string consisting of the name of the class of which the object is an instance, the at-sign character `@', and the unsigned hexadecimal representation of the hash code of the object. In other words, this method returns a string equal to the value of:

     getClass().getName() + '@' + Integer.toHexString(hashCode())
     

    Overrides:

    toString in class Object

    Returns:

    a string representation of the object.