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java.lang.Objectjava.security.SignatureSpi
com.ibm.crypto.provider.SHA1withDSA
public class SHA1withDSA
Field Summary |
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Fields inherited from class java.security.SignatureSpi |
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appRandom |
Constructor Summary | |
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SHA1withDSA()
Constructs a new instance of this class. |
Method Summary | |
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protected Object |
engineGetParameter(String param)
Deprecated. |
protected void |
engineInitSign(PrivateKey privateKey)
Initialize the receiver with the specified private key, to be used for signing purposes. |
protected void |
engineInitVerify(PublicKey publicKey)
Initialize the receiver with the specified public key, to be used for verification purposes. |
protected void |
engineSetParameter(String param,
Object value)
Deprecated. Replaced with engineSetParameter(AlgorithmParameterSpec) |
protected byte[] |
engineSign()
Answers the signature bytes of the data updated so far. |
protected void |
engineUpdate(byte b)
Update the bytes signed so far with the extra byte provided. |
protected void |
engineUpdate(byte[] buffer,
int offset,
int length)
Update the bytes signed so far with the extra bytes provided. |
protected boolean |
engineVerify(byte[] sigBytes)
Verifies the passed signature. |
String |
toString()
Answers a string containing a concise, human-readable description of the receiver. |
Methods inherited from class java.security.SignatureSpi |
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clone, engineGetParameters, engineInitSign, engineSetParameter, engineSign, engineUpdate, engineVerify |
Methods inherited from class java.lang.Object |
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equals, finalize, getClass, hashCode, notify, notifyAll, wait, wait, wait |
Constructor Detail |
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public SHA1withDSA() throws NoSuchAlgorithmException, NoSuchProviderException
NoSuchAlgorithmException
NoSuchProviderException
Method Detail |
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protected Object engineGetParameter(String param) throws InvalidParameterException
engineGetParameter
in class SignatureSpi
param
- String the parameter name.
InvalidParameterException
- if the specified parameter name is invalidprotected void engineInitSign(PrivateKey privateKey) throws InvalidKeyException
engineInitSign
in class SignatureSpi
privateKey
- PrivateKey the key to be used when signing
InvalidKeyException
- if the specified key is not valid (improperly encoded, parameters missing, etc)protected void engineInitVerify(PublicKey publicKey) throws InvalidKeyException
engineInitVerify
in class SignatureSpi
publicKey
- PublicKey the key to be used when verifying
InvalidKeyException
- if the specified key is not valid (improperly encoded, parameters missing, etc)protected void engineSetParameter(String param, Object value) throws InvalidParameterException
engineSetParameter
in class SignatureSpi
param
- String the parameter namevalue
- Object the parameter value
InvalidParameterException
- if the specified parameter name is not valid for the receiver or if it has
been set alreadyprotected byte[] engineSign() throws SignatureException
engineSign
in class SignatureSpi
SignatureException
- if the engine is not initialized properlyprotected void engineUpdate(byte b) throws SignatureException
engineUpdate
in class SignatureSpi
b
- byte the extra byte to be signed.
SignatureException
- if the receiver is not initialized properlyprotected void engineUpdate(byte[] buffer, int offset, int length) throws SignatureException
engineUpdate
in class SignatureSpi
buffer
- byte[] the extra bytes to be signed.offset
- int offset in the buffer where to start getting bytes for signinglength
- int how many bytes to get for signing
SignatureException
- if the receiver is not initialized properlyprotected boolean engineVerify(byte[] sigBytes) throws SignatureException
engineVerify
in class SignatureSpi
sigBytes
- byte[] the signature bytes to verify
SignatureException
- if the receiver is not initialized
properly or if the key is not encoded properly.public String toString()
toString
in class Object
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