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java.lang.Objectjava.io.InputStream
net.rim.device.api.crypto.CryptoInputStream
net.rim.device.api.crypto.DecryptorInputStream
net.rim.device.api.crypto.StreamDecryptor
net.rim.device.api.crypto.ECIESDecryptor
public final class ECIESDecryptor
ECIESDecryptor is a class used to decrypt messages encoded with the Elliptic Curve Integrated Encryption Scheme ( ECIES ). It is described in ANSI X9.63.
Elliptic Curve cryptography is defined in various standards including P1363 and ANSI X9.62.
ECIESEncryptorCerticom Contact Information
Phone:905-507-4220
Email: sales@certicom.com
Website: http://www.certicom.com/rim
| Field Summary |
|---|
| Fields inherited from class net.rim.device.api.crypto.CryptoInputStream |
|---|
_inputStream |
| Constructor Summary | ||
|---|---|---|
|
ECIESDecryptor(InputStream input,
ECPrivateKey recipientPrivateKey)
Creates an ECIESDecryptor class. |
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ECIESDecryptor(InputStream input,
ECPrivateKey recipientPrivateKey,
String macAlgorithm,
int macKeyLength,
byte[] additionalMACInfo,
int macLength,
byte[] additionalKDFInfo,
Digest kdfDigest,
boolean useCofactor)
Creates an ECIESDecryptor class. |
|
| Method Summary | ||
|---|---|---|
|
protected void |
decrypt(byte[] data,
int dataOffset,
int dataLength)
Decrypts data according to the specific implementation of the chosen stream cipher. |
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String |
getAlgorithm()
Returns the name of this algorithm, namely "ECIES/" + macAlgorithm. |
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boolean |
verify()
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| Methods inherited from class net.rim.device.api.crypto.StreamDecryptor |
|---|
read |
| 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 |
| Constructor Detail |
|---|
public ECIESDecryptor(InputStream input,
ECPrivateKey recipientPrivateKey)
throws CryptoTokenException,
CryptoUnsupportedOperationException,
InvalidKeyException,
InvalidCryptoSystemException,
IOException,
NoSuchAlgorithmException
input - The input stream to read fromrecipientPrivateKey - The private key of the person this message was for
CryptoTokenException - Thrown if a crypto token error occurs.
CryptoUnsupportedOperationException - Thrown if the attempted operation is not supported.
InvalidKeyException - Thrown if there is a problem with the ephemeral key read from the stream.
InvalidCryptoSystemException - Thrown if the crypto system has a problem with it.
IOException - Thrown if there is a problem writing to the output stream
NoSuchAlgorithmException - Thrown if the mac algorithm is not supportedCerticom Contact Information
Phone:905-507-4220
Email: sales@certicom.com
Website: http://www.certicom.com/rim
public ECIESDecryptor(InputStream input,
ECPrivateKey recipientPrivateKey,
String macAlgorithm,
int macKeyLength,
byte[] additionalMACInfo,
int macLength,
byte[] additionalKDFInfo,
Digest kdfDigest,
boolean useCofactor)
throws CryptoTokenException,
CryptoUnsupportedOperationException,
InvalidKeyException,
InvalidCryptoSystemException,
IOException,
NoSuchAlgorithmException
input - The input stream to read fromrecipientPrivateKey - The private key of the person this message was formacAlgorithm - The MAC algorithm to use. If null, then "HMAC/SHA1" is used.macKeyLength - The length of the MAC key to use.additionalMACInfo - Additional mac information to provided to the MAC.macLength - The length of the MAC to use.additionalKDFInfo - Additional shared information to provide to the KDFkdfDigest - Specifies the digest to use in the KDF. If null, then SHA1 is used.useCofactor - If this true, a the elliptic curve's cofactor is used in the calculations.
If false, the cofactor is not used. Note, setting this value to TRUE is the most common usage.
CryptoTokenException - Thrown if a crypto token error occurs.
CryptoUnsupportedOperationException - Thrown if the attempted operation is not supported.
InvalidKeyException - Thrown if there is a problem with the ephemeral key read from the stream.
InvalidCryptoSystemException - Thrown if the crypto system has a problem with it.
IOException - Thrown if there is a problem writing to the output stream
NoSuchAlgorithmException - Thrown if the mac algorithm is not supportedCerticom Contact Information
Phone:905-507-4220
Email: sales@certicom.com
Website: http://www.certicom.com/rim
| Method Detail |
|---|
public String getAlgorithm()
"ECIES/" + macAlgorithm.
getAlgorithm in class CryptoInputStreamCerticom Contact Information
Phone:905-507-4220
Email: sales@certicom.com
Website: http://www.certicom.com/rim
protected void decrypt(byte[] data,
int dataOffset,
int dataLength)
throws CryptoTokenException
StreamDecryptor
decrypt in class StreamDecryptordata - A byte array containing the input to the stream cipher.dataOffset - The offset, or initial position within the array, of the information to decrypt.dataLength - The length, in bytes, of the information to decrypt.
CryptoTokenException - Thrown when an error occurs with the crypto
token or the crypto token is invalid.Certicom Contact Information
Phone:905-507-4220
Email: sales@certicom.com
Website: http://www.certicom.com/rim
public boolean verify()
throws CryptoTokenException
CryptoTokenExceptionCerticom Contact Information
Phone:905-507-4220
Email: sales@certicom.com
Website: http://www.certicom.com/rim
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