Summary: Constants | Fields | Ctors | Methods | Inherited Methods

PSSParameterSpec

public class PSSParameterSpec
extends Object implements AlgorithmParameterSpec

java.lang.Object
↳	java.security.spec.PSSParameterSpec

This class specifies a parameter spec for RSASSA-PSS signature scheme, as defined in the PKCS#1 v2.2 standard.

Its ASN.1 definition in PKCS#1 standard is described below:

 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) }

where

 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 -- }

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

See also:

Summary

Constants
`int`	`TRAILER_FIELD_BC` The `TrailerFieldBC` constant as defined in PKCS#1

Fields
`public static final PSSParameterSpec`	`DEFAULT` The PSS parameter set with all default values

Public constructors
`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.

Public methods
`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.

Inherited methods

From class java.lang.Object

`Object`	`clone()` Creates and returns a copy of this object.
`boolean`	`equals(Object obj)` Indicates whether some other object is "equal to" this one.
`void`	`finalize()` Called by the garbage collector on an object when garbage collection determines that there are no more references to the object.
`final Class<?>`	`getClass()` Returns the runtime class of this `Object`.
`int`	`hashCode()` Returns a hash code value for the object.
`final void`	`notify()` Wakes up a single thread that is waiting on this object's monitor.
`final void`	`notifyAll()` Wakes up all threads that are waiting on this object's monitor.
`String`	`toString()` Returns a string representation of the object.
`final void`	`wait(long timeoutMillis, int nanos)` Causes the current thread to wait until it is awakened, typically by being notified or interrupted, or until a certain amount of real time has elapsed.
`final void`	`wait(long timeoutMillis)` Causes the current thread to wait until it is awakened, typically by being notified or interrupted, or until a certain amount of real time has elapsed.
`final void`	`wait()` Causes the current thread to wait until it is awakened, typically by being notified or interrupted.

Constants

TRAILER_FIELD_BC

Added in API level 35

 public static final int TRAILER_FIELD_BC

The TrailerFieldBC constant as defined in PKCS#1

Constant Value: 1 (0x00000001)

Fields

DEFAULT

Added in API level 1

 public static final PSSParameterSpec DEFAULT

The PSS parameter set with all default values

Public constructors