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java.lang.Objectnet.rim.device.api.crypto.X931SignatureVerifier
public final class X931SignatureVerifier
Represents the X931 signature verifier. This Signature verifier is defined in the ANSI X9.31 standard.
Note : Currently the only digests defined for use with this signature signer are SHA-1, SHA-256, SHA-384, SHA-512 and RIPEMD160. These are the only digests you can use with this class.
X931SignatureSigner| Constructor Summary | ||
|---|---|---|
|
X931SignatureVerifier(RSAPublicKey key,
byte[] signature,
int signatureOffset)
Creates a new X931SignatureVerifier object using SHA-1 as the digest. |
|
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X931SignatureVerifier(RSAPublicKey key,
Digest digest,
byte[] signature,
int signatureOffset)
Creates a new X931SignatureVerifier object given a digest as
an additional parameter. |
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| Method Summary | ||
|---|---|---|
|
String |
getAlgorithm()
Returns the name of the signing algorithm used, eg "DSA", "ECDSA", etc. |
|
void |
update(byte[] data)
Adds additional message data to the signature. |
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void |
update(byte[] data,
int offset,
int length)
Adds additional message data to the signature. |
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void |
update(int data)
Adds additional message data to the signature. |
|
boolean |
verify()
Returns true if the signature is valid, false otherwise. |
| Methods inherited from class java.lang.Object |
|---|
equals, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait |
| Constructor Detail |
|---|
public X931SignatureVerifier(RSAPublicKey key,
byte[] signature,
int signatureOffset)
throws InvalidSignatureEncodingException
X931SignatureVerifier object using SHA-1 as the digest.
key - The Public key used to verifiy the signature.signature - A byte array containing the signature data.signatureOffset - The offset of the signature data within the array.
InvalidSignatureEncodingException
public X931SignatureVerifier(RSAPublicKey key,
Digest digest,
byte[] signature,
int signatureOffset)
throws InvalidSignatureEncodingException
X931SignatureVerifier object given a digest as
an additional parameter.
key - The Public key used to verifiy the signature.digest - The digest used to verify the signature.signature - A byte array containing the signature data.signatureOffset - The offset of the signature data within the array.
InvalidSignatureEncodingException| Method Detail |
|---|
public String getAlgorithm()
SignatureVerifier
getAlgorithm in interface SignatureVerifierpublic void update(int data)
SignatureVerifier
update in interface SignatureVerifierdata - The byte to be hashed.public void update(byte[] data)
SignatureVerifier
update in interface SignatureVerifierdata - A byte array containing the message data to hash.
public void update(byte[] data,
int offset,
int length)
SignatureVerifier
update in interface SignatureVerifierdata - The message data to hash.offset - The offset, or initial position to start reading in the data.length - The amount of data to read.
public boolean verify()
throws CryptoTokenException,
CryptoUnsupportedOperationException
SignatureVerifier
verify in interface SignatureVerifierCryptoTokenException - Thrown when a problem occurs with a crypto
token or the crypto token is invalid.
CryptoUnsupportedOperationException - Thrown when a call is made to
an unsupported operation.
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