This class specifies the set of parameters used with OAEP Padding, as defined in the
PKCS #1 PKCS#1 v2.2 standard. Its ASN.1 definition in PKCS#1 standard is described below:
RSAES-OAEP-params ::= SEQUENCE {
hashAlgorithm [0] OAEP-PSSDigestAlgorithmsHashAlgorithm DEFAULT sha1,
maskGenAlgorithm [1] PKCS1MGFAlgorithmsMaskGenAlgorithm DEFAULT mgf1SHA1,
pSourceAlgorithm [2] PKCS1PSourceAlgorithmsPSourceAlgorithm 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 OAEP-PSSDigestAlgorithmsHashAlgorithm },
... -- Allows for future expansion --
}
PKCS1PSourceAlgorithms ALGORITHM-IDENTIFIER ::= {
{ OID id-pSpecified PARAMETERS OCTETEncodingParameters STRING},
... -- Allows for future expansion --
}
EncodingParameters ::= OCTET STRING(SIZE(0..MAX))
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