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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.DecryptorInputStream
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+--net.rim.device.api.crypto.StreamDecryptor
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+--net.rim.device.api.crypto.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.
Certicom Contact Information
Phone:613-254-9258
Email: sales@certicom.com
Website: http://www.certicom.com/rim
Signed: This element is only accessible by signed clients. If you intend to use this element, please contact RIM to establish the necessary agreements that will allow you to have your COD files signed. Signing is only required for use on the device, development under the JDE can occur without signing the CODs.
ECIESEncryptor| Field Summary |
| Fields inherited from class net.rim.device.api.crypto.CryptoInputStream |
_inputStream |
| Constructor Summary | ||
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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. |
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| Method Summary | ||
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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 forCryptoTokenException - 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 streamNoSuchAlgorithmException - Thrown if the mac algorithm is not supportedCerticom Contact Information
Phone:613-254-9258
Email: sales@certicom.com
Website: http://www.certicom.com/rim
Signed: This element is only accessible by signed clients. If you intend to use this element, please contact RIM to establish the necessary agreements that will allow you to have your COD files signed. Signing is only required for use on the device, development under the JDE can occur without signing the CODs.
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.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 streamNoSuchAlgorithmException - Thrown if the mac algorithm is not supportedCerticom Contact Information
Phone:613-254-9258
Email: sales@certicom.com
Website: http://www.certicom.com/rim
Signed: This element is only accessible by signed clients. If you intend to use this element, please contact RIM to establish the necessary agreements that will allow you to have your COD files signed. Signing is only required for use on the device, development under the JDE can occur without signing the CODs.
| Method Detail |
protected void decrypt(byte[] data,
int dataOffset,
int dataLength)
throws CryptoTokenException
StreamDecryptordecrypt in class StreamDecryptor
StreamDecryptordata - A byte array containing the input to the stream cipher.offset - The offset, or initial position within the array, of the information to decrypt.length - 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:613-254-9258
Email: sales@certicom.com
Website: http://www.certicom.com/rim
Signed: This element is only accessible by signed clients. If you intend to use this element, please contact RIM to establish the necessary agreements that will allow you to have your COD files signed. Signing is only required for use on the device, development under the JDE can occur without signing the CODs.
public String getAlgorithm()
"ECIES/" + macAlgorithm.getAlgorithm in class CryptoInputStream
CryptoInputStreamCerticom Contact Information
Phone:613-254-9258
Email: sales@certicom.com
Website: http://www.certicom.com/rim
Signed: This element is only accessible by signed clients. If you intend to use this element, please contact RIM to establish the necessary agreements that will allow you to have your COD files signed. Signing is only required for use on the device, development under the JDE can occur without signing the CODs.
public boolean verify()
throws CryptoTokenException
Certicom Contact Information
Phone:613-254-9258
Email: sales@certicom.com
Website: http://www.certicom.com/rim
Signed: This element is only accessible by signed clients. If you intend to use this element, please contact RIM to establish the necessary agreements that will allow you to have your COD files signed. Signing is only required for use on the device, development under the JDE can occur without signing the CODs.
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