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java.lang.Object
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+--java.io.InputStream
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+--net.rim.device.api.crypto.CryptoInputStream
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+--net.rim.device.api.crypto.SignatureVerifierInputStream
Combines the use of a signature verifier with the use of streams. The streams contain the information that needs to be passed through the signature verifier checking for the validity of the signature.
SignatureSignerOutputStream| Field Summary | ||
|
protected boolean |
_on
Determines whether or not the data that is read into the class through the underlying input stream will go through the signature verifier before being returned to the user. |
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protected SignatureVerifier |
_verifier
Contains the SignatureVerifier object that is used to
determine if the signature is correct. |
| Fields inherited from class net.rim.device.api.crypto.CryptoInputStream |
_inputStream |
| Constructor Summary | ||
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SignatureVerifierInputStream(SignatureVerifier verifier,
InputStream inputStream)
Establishes the input stream being used for reading data and the signature verifier that is used to determine the validity of the signature. |
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| Method Summary | ||
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String |
getAlgorithm()
Returns the name of this algorithm. |
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SignatureVerifier |
getSignatureVerifier()
Returns a copy of the signature verifier class in use. |
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void |
on(boolean on)
Determines whether or not the information read from the stream should be passed through the signature before being written to the output byte arrays. |
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int |
read(byte[] data,
int offset,
int length)
Reads up to the specified number of bytes from this input stream into an array of bytes. |
| Methods inherited from class net.rim.device.api.crypto.CryptoInputStream |
available, close, getInputStream, markSupported, read, read |
| Methods inherited from class java.io.InputStream |
mark, reset, skip |
| Methods inherited from class java.lang.Object |
equals, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait |
| Field Detail |
protected boolean _on
By default, _on is set to true.
protected SignatureVerifier _verifier
SignatureVerifier object that is used to
determine if the signature is correct.| Constructor Detail |
public SignatureVerifierInputStream(SignatureVerifier verifier, InputStream inputStream)
verifier - The signature verifier that provides the mechanism for
determining if the signature is valid or not.inputStream - The underlying input stream that is used for reading
data from.| Method Detail |
public String getAlgorithm()
This method calls the appropriate SignatureVerifier's
getAlgorithm() method.
For example, DSASignatureSigner returns
"DSA_" + digest.getAlgorithm(), ECDASignatureSigner
returns "ECDSA_" + digest.getAlgorithm(),
PSSSignatureSigner returns "RSA_PSS_" + digest.getAlgorithm(),
NullSignatureSigner returns "Null".
getAlgorithm in class CryptoInputStream
CryptoInputStreampublic SignatureVerifier getSignatureVerifier()
public void on(boolean on)
By default, _on is set to true at start up.
on - If on is true, the information will be passed to the signature
verifier. If false, it will not be passed to the verifier.
public int read(byte[] data,
int offset,
int length)
throws IOException
CryptoInputStreamread in class CryptoInputStream
CryptoInputStreambuffer - The buffer into which the data is read.offset - The starting offset within the buffer, to store the data.length - The maximum number of bytes to read.IOException - Thrown if an I/O error occurs.
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