javax.crypto.spec
Class OAEPParameterSpec
- java.lang.Object
javax.crypto.spec.OAEPParameterSpec
All implemented interfaces:
java.security.spec.AlgorithmParameterSpec
- public class OAEPParameterSpec
- extends java.lang.Object
- implements java.security.spec.AlgorithmParameterSpec
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
Since:
1.5
Version:
1.5, 06/03/04
Author:
Valerie Peng
See Also:
MGF1ParameterSpec,
PSourceField Summary
| Modifier and Type | Field and Description |
|---|---|
|
DEFAULT
The OAEP parameter set with all default values.
|
Constructor Summary
| Constructor and Description |
|---|
OAEPParameterSpec(java.lang.String mdName,java.lang.String mgfName,java.security.spec.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 and Description |
|---|---|
|
getDigestAlgorithm()
Returns the message digest algorithm name.
|
|
getMGFAlgorithm()
Returns the mask generation function algorithm name.
|
|
getMGFParameters()
Returns the parameters for the mask generation function.
|
getPSource()
Returns the source of encoding input P.
|
| Methods inherited from class java.lang.Object |
|---|
clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait |
Field Detail
DEFAULT
- public static final OAEPParameterSpec DEFAULT
The OAEP parameter set with all default values.
Constructor Detail
OAEPParameterSpec
- public OAEPParameterSpec(java.lang.String mdName,
- java.lang.String mgfName,
- java.security.spec.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:
java.lang.NullPointerException - if mdName,
mgfName, or pSrc is null. Method Detail
getDigestAlgorithm
- public java.lang.String getDigestAlgorithm( )
Returns the message digest algorithm name.
Returns:
the message digest algorithm name.
getMGFAlgorithm
- public java.lang.String getMGFAlgorithm( )
Returns the mask generation function algorithm name.
Returns:
the mask generation function algorithm name.
getMGFParameters
- public java.security.spec.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.