|
|||||||||
| Home >> All >> cryptix >> jce >> provider >> [ rsa overview ] | PREV CLASS NEXT CLASS | ||||||||
SUMMARY:  JAVADOC |  SOURCE |  DOWNLOAD | NESTED | FIELD | CONSTR | METHOD |
DETAIL: FIELD | CONSTR | METHOD | ||||||||
cryptix.jce.provider.rsa
Class RSASignature_PSS
java.lang.Objectjava.security.SignatureSpi
- Direct Known Subclasses:
- RSASignature_PSS_MD2, RSASignature_PSS_MD4, RSASignature_PSS_MD5, RSASignature_PSS_RIPEMD128, RSASignature_PSS_RIPEMD160, RSASignature_PSS_SHA1, RSASignature_PSS_SHA256, RSASignature_PSS_SHA384, RSASignature_PSS_SHA512, RSASignature_PSS_Tiger
- public abstract class RSASignature_PSS
- extends java.security.SignatureSpi
Implementation of the RSASSA-PSS signature scheme as described in RSA Labs' PKCS#1v2.
- Version:
- $Revision: 1.3 $
| Field Summary | |
private int |
emBits
Exact bit-length of encoded message (modulus len - 1). |
private int |
emLen
Byte length of encoded message: emLen = ceil(emBits/8). |
private java.math.BigInteger |
exp
Various components of our RSA[Private|Public]Key. |
private int |
hLen
Length of hash (in bytes). |
private static byte[] |
MASK
Bitmasks of least significant bits indexed by bitcount. |
private java.security.MessageDigest |
md
Hash instance for this signature instance. |
private java.math.BigInteger |
n
Various components of our RSA[Private|Public]Key. |
private java.math.BigInteger |
p
Various components of our RSA[Private|Public]Key. |
private byte[] |
presetSalt
XXX If !null, this will be used as salt in lieu of randomness. |
private java.math.BigInteger |
q
Various components of our RSA[Private|Public]Key. |
private java.security.SecureRandom |
rng
RNG |
private int |
sLen
Length of salt (in bytes). |
private java.math.BigInteger |
u
Various components of our RSA[Private|Public]Key. |
| Fields inherited from class java.security.SignatureSpi |
appRandom |
| Constructor Summary | |
RSASignature_PSS(java.lang.String hashName)
|
|
| Method Summary | |
private byte[] |
concat(byte[] a,
byte[] b)
|
private byte[] |
concat(byte[] a,
byte[] b,
byte[] c)
|
protected java.lang.Object |
engineGetParameter(java.lang.String a)
Returns the value for the specified algorithm parameter. |
protected void |
engineInitSign(java.security.PrivateKey privateKey)
Initializes this instance with the private key for signing purposes. |
protected void |
engineInitSign(java.security.PrivateKey key,
java.security.SecureRandom random)
Initializes this instance with the private key and source of randomness for signing purposes. |
protected void |
engineInitVerify(java.security.PublicKey key)
Initializes this instance with the public key for verification purposes. |
protected void |
engineSetParameter(java.lang.String name,
java.lang.Object param)
Sets the specified algorithm parameter to the specified value. |
protected byte[] |
engineSign()
Returns the signature bytes of all the data fed to this instance. |
protected void |
engineUpdate(byte b)
Updates the data to be signed or verified with the specified byte. |
protected void |
engineUpdate(byte[] buf,
int off,
int len)
Updates the data to be signed or verified with the specified bytes. |
protected boolean |
engineVerify(byte[] signature)
Verifies a designated signature. |
private int |
getModulusBitLen()
|
private int |
getModulusLen()
|
private void |
initCommon()
|
private byte[] |
mgf1(byte[] seed,
int len)
|
private byte[] |
mgf1Hash(byte[] seed,
byte c)
|
private boolean |
pssVerify(byte[] mHash,
byte[] em,
int emBits)
|
private static byte[] |
xor(byte[] a,
byte[] b)
|
| Methods inherited from class java.security.SignatureSpi |
clone, engineGetParameters, engineSetParameter, engineSign, engineVerify |
| Methods inherited from class java.lang.Object |
equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait |
| Field Detail |
MASK
private static final byte[] MASK
- Bitmasks of least significant bits indexed by bitcount.
md
private final java.security.MessageDigest md
- Hash instance for this signature instance.
hLen
private final int hLen
- Length of hash (in bytes).
sLen
private final int sLen
- Length of salt (in bytes).
presetSalt
private byte[] presetSalt
- XXX If !null, this will be used as salt in lieu of randomness.
This allows the signature to behave deterministically
for testing purposes.
emLen
private int emLen
- Byte length of encoded message: emLen = ceil(emBits/8).
emBits
private int emBits
- Exact bit-length of encoded message (modulus len - 1).
exp
private java.math.BigInteger exp
- Various components of our RSA[Private|Public]Key.
n
private java.math.BigInteger n
- Various components of our RSA[Private|Public]Key.
p
private java.math.BigInteger p
- Various components of our RSA[Private|Public]Key.
q
private java.math.BigInteger q
- Various components of our RSA[Private|Public]Key.
u
private java.math.BigInteger u
- Various components of our RSA[Private|Public]Key.
rng
private java.security.SecureRandom rng
- RNG
| Constructor Detail |
RSASignature_PSS
public RSASignature_PSS(java.lang.String hashName)
| Method Detail |
engineGetParameter
protected java.lang.Object engineGetParameter(java.lang.String a)
- Description copied from class:
java.security.SignatureSpi - Returns the value for the specified algorithm parameter.
engineInitSign
protected void engineInitSign(java.security.PrivateKey key, java.security.SecureRandom random) throws java.security.InvalidKeyException
- Description copied from class:
java.security.SignatureSpi - Initializes this instance with the private key and source of randomness for
signing purposes.
This method cannot be abstract for backward compatibility reasons.
engineInitSign
protected void engineInitSign(java.security.PrivateKey privateKey) throws java.security.InvalidKeyException
- Description copied from class:
java.security.SignatureSpi - Initializes this instance with the private key for signing purposes.
engineInitVerify
protected void engineInitVerify(java.security.PublicKey key) throws java.security.InvalidKeyException
- Description copied from class:
java.security.SignatureSpi - Initializes this instance with the public key for verification purposes.
initCommon
private void initCommon()
throws java.security.InvalidKeyException
engineSetParameter
protected void engineSetParameter(java.lang.String name, java.lang.Object param)
- Description copied from class:
java.security.SignatureSpi - Sets the specified algorithm parameter to the specified value.
engineSign
protected byte[] engineSign()
- Description copied from class:
java.security.SignatureSpi - Returns the signature bytes of all the data fed to this instance. The
format of the output depends on the underlying signature algorithm.
getModulusLen
private int getModulusLen()
getModulusBitLen
private int getModulusBitLen()
xor
private static byte[] xor(byte[] a,
byte[] b)
mgf1
private byte[] mgf1(byte[] seed,
int len)
mgf1Hash
private byte[] mgf1Hash(byte[] seed,
byte c)
concat
private byte[] concat(byte[] a,
byte[] b)
concat
private byte[] concat(byte[] a,
byte[] b,
byte[] c)
engineUpdate
protected void engineUpdate(byte b)
- Description copied from class:
java.security.SignatureSpi - Updates the data to be signed or verified with the specified byte.
engineUpdate
protected void engineUpdate(byte[] buf,
int off,
int len)
- Description copied from class:
java.security.SignatureSpi - Updates the data to be signed or verified with the specified bytes.
engineVerify
protected boolean engineVerify(byte[] signature)
- Description copied from class:
java.security.SignatureSpi - Verifies a designated signature.
pssVerify
private boolean pssVerify(byte[] mHash,
byte[] em,
int emBits)
|
|||||||||
| Home >> All >> cryptix >> jce >> provider >> [ rsa overview ] | PREV CLASS NEXT CLASS | ||||||||
|
SUMMARY: JAVADOC | SOURCE | DOWNLOAD | NESTED | FIELD | CONSTR | METHOD |
DETAIL: FIELD | CONSTR | METHOD | ||||||||