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java.lang.Objectjavax.crypto.spec.OAEPParameterSpec
public class OAEPParameterSpec
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
MGF1ParameterSpec,
PSource| Field Summary | |
|---|---|
static OAEPParameterSpec |
DEFAULT
The OAEP parameter set with all default values. |
| Constructor Summary | |
|---|---|
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. |
|
| Method Summary | |
|---|---|
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. |
PSource |
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 |
|---|
public static final OAEPParameterSpec DEFAULT
| Constructor Detail |
|---|
public OAEPParameterSpec(String mdName,
String mgfName,
AlgorithmParameterSpec mgfSpec,
PSource pSrc)
mdName, mask generation function
algorithm mgfName, parameters for the mask
generation function mgfSpec, and source of
the encoding input P pSrc.
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.
NullPointerException - if mdName,
mgfName, or pSrc is null.| Method Detail |
|---|
public String getDigestAlgorithm()
public String getMGFAlgorithm()
public AlgorithmParameterSpec getMGFParameters()
public PSource getPSource()
|
Java™ Platform Standard Ed. 6 |
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