AlgorithmParameterSpec
public class OAEPParameterSpec extends Object implements AlgorithmParameterSpec
RSAES-OAEP-params ::= SEQUENCE { hashAlgorithm [0] HashAlgorithm DEFAULT sha1, maskGenAlgorithm [1] MaskGenAlgorithm DEFAULT mgf1SHA1, pSourceAlgorithm [2] PSourceAlgorithm DEFAULT pSpecifiedEmpty }where
HashAlgorithm ::= AlgorithmIdentifier { {OAEP-PSSDigestAlgorithms} } MaskGenAlgorithm ::= AlgorithmIdentifier { {PKCS1MGFAlgorithms} } PSourceAlgorithm ::= AlgorithmIdentifier { {PKCS1PSourceAlgorithms} } 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 -- } PKCS1PSourceAlgorithms ALGORITHM-IDENTIFIER ::= { { OID id-pSpecified PARAMETERS EncodingParameters }, ... -- Allows for future expansion -- } EncodingParameters ::= OCTET STRING(SIZE(0..MAX))
Modifier and Type | Field | Description |
---|---|---|
static final OAEPParameterSpec |
DEFAULT |
Deprecated. This field uses the default values defined in the PKCS #1 standard. |
Constructor | Description |
---|---|
OAEPParameterSpec |
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 . |
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. |
PSource |
getPSource() |
Returns the source of encoding input P. |
@Deprecated(since="19") public static final OAEPParameterSpec DEFAULT
OAEPParameterSpec
with the desired parameter values using the OAEPParameterSpec(String, String, AlgorithmParameterSpec, PSource)
constructor.MGF1ParameterSpec.SHA1
as parameters for the mask generation function, and PSource.PSpecified.DEFAULT
as the source of the encoding input.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 digestmgfName
- the algorithm name for the mask generation functionmgfSpec
- the parameters for the mask generation function; if null
is specified, null
will be returned by getMGFParameters()
pSrc
- the source of the encoding input PNullPointerException
- if mdName
, mgfName
, or pSrc
is null
public String getDigestAlgorithm()
public String getMGFAlgorithm()
public AlgorithmParameterSpec getMGFParameters()
public PSource getPSource()
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https://docs.oracle.com/en/java/javase/21/docs/api/java.base/javax/crypto/spec/OAEPParameterSpec.html