- java.lang.Object
-
- java.security.SignatureSpi
-
- com.ibm.crypto.hdwrCCA.provider.SHA2withRSA
-
public final class SHA2withRSA extends java.security.SignatureSpi
This class is a concrete implementation for RSA signing with SHA2.
-
-
Constructor Summary
Constructors Constructor Description SHA2withRSA()
Construct a blank RSA object.
-
Method Summary
All Methods Instance Methods Concrete Methods Deprecated Methods Modifier and Type Method Description protected java.lang.Object
engineGetParameter(java.lang.String key)
Deprecated.protected void
engineInitSign(java.security.PrivateKey privateKey)
Initialize this signature object with a RSA private key.protected void
engineInitVerify(java.security.PublicKey publicKey)
Initialize the RSA object with a RSA public key.protected void
engineSetParameter(java.lang.String key, java.lang.Object param)
Deprecated.protected byte[]
engineSign()
Get message digest for all the data thus far updated, then sign the message digest.protected void
engineUpdate(byte b)
Add a byte to the digest to be signed or verified.protected void
engineUpdate(byte[] data, int off, int len)
Add an array of bytes to the digest to be signed or verified.protected boolean
engineVerify(byte[] signature)
Verify the signature (compare the result with the message digest).
-
-
-
Constructor Detail
-
SHA2withRSA
public SHA2withRSA() throws java.security.NoSuchAlgorithmException, java.security.NoSuchProviderException
Construct a blank RSA object. It must be initialized before being usable for signing or verifying.- Throws:
java.security.NoSuchAlgorithmException
- is thrown when if the Algorithm can not be found.java.security.NoSuchProviderException
- is thrown the provider can not be found.
-
-
Method Detail
-
engineSetParameter
@Deprecated protected void engineSetParameter(java.lang.String key, java.lang.Object param) throws java.lang.UnsupportedOperationException
Deprecated.Have to implement Signature's abstract method engineSetParameter to be a concrete class. However, this method has no meaning for this provider.- Specified by:
engineSetParameter
in classjava.security.SignatureSpi
- Throws:
java.lang.UnsupportedOperationException
- is always thrown.
-
engineGetParameter
@Deprecated protected java.lang.Object engineGetParameter(java.lang.String key) throws java.lang.UnsupportedOperationException
Deprecated.Have to implement Signature's abstract method engineGetParameter to be a concrete class. However, this method has no meaning for this provider.- Specified by:
engineGetParameter
in classjava.security.SignatureSpi
- Throws:
java.lang.UnsupportedOperationException
- is always thrown.
-
engineInitSign
protected void engineInitSign(java.security.PrivateKey privateKey) throws java.security.InvalidKeyException
Initialize this signature object with a RSA private key.- Specified by:
engineInitSign
in classjava.security.SignatureSpi
- Parameters:
privateKey
- the RSA private key- Throws:
java.security.InvalidKeyException
- ifprivateKey
is not a valid RSA private key.
-
engineInitVerify
protected void engineInitVerify(java.security.PublicKey publicKey) throws java.security.InvalidKeyException
Initialize the RSA object with a RSA public key.- Specified by:
engineInitVerify
in classjava.security.SignatureSpi
- Parameters:
publicKey
- the RSA public key.- Throws:
java.security.InvalidKeyException
- if the key is not a valid RSA public key.
-
engineUpdate
protected void engineUpdate(byte b) throws java.security.SignatureException
Add a byte to the digest to be signed or verified.- Specified by:
engineUpdate
in classjava.security.SignatureSpi
- Parameters:
b
- the byte to updated.- Throws:
java.security.SignatureException
-
engineUpdate
protected void engineUpdate(byte[] data, int off, int len) throws java.security.SignatureException
Add an array of bytes to the digest to be signed or verified.- Specified by:
engineUpdate
in classjava.security.SignatureSpi
- Parameters:
data
- the array bytes to be added to the digest.off
- the offset into the array to start the update.len
- length of the array.- Throws:
java.security.SignatureException
-
engineSign
protected byte[] engineSign() throws java.security.SignatureException
Get message digest for all the data thus far updated, then sign the message digest.- Specified by:
engineSign
in classjava.security.SignatureSpi
- Returns:
- the signature.
- Throws:
java.security.SignatureException
- if the signature object was not properly initialized, or if another exception occurs.
-
engineVerify
protected boolean engineVerify(byte[] signature) throws java.security.SignatureException
Verify the signature (compare the result with the message digest).- Specified by:
engineVerify
in classjava.security.SignatureSpi
- Parameters:
signature
- the signature to be verified.- Throws:
java.security.SignatureException
- if the signature object was not properly initialized, or if another exception occurs.
-
-