net.rim.device.api.crypto
Class DSASignatureSigner
java.lang.Object
net.rim.device.api.crypto.DSASignatureSigner
- All Implemented Interfaces:
- SignatureSigner
public final class DSASignatureSigner
- extends Object
- implements SignatureSigner
Signs a message using the DSA signature scheme.
The Digital Signature Algorithm ( DSA ) is defined in FIPS 186.
For information on cryptographic algorithms, see Crypto Algorithms.
- See Also:
DSASignatureVerifier- Category:
- Certicom: This element is part of the Certicom Cryptography APIs. The Certicom Cryptography APIs provide the tools you need, including ECC based algorithms, to integrate high performance data security into your applications, such as public key data encryption and decryption, digital signatures, and data authentication. Since the Certicom Cryptography API is already in the JDE, its use will remove the need for you to engage in time and resource intensive security integration so that you have lower development costs and a faster time to market. Use of the Certicom Cryptography API requires a license from Certicom. Please contact Certicom directly for more information on licensing fees and conditions.
Certicom Contact Information
Phone:905-507-4220
Email: sales@certicom.com
Website: http://www.certicom.com/rim
- Signed: This element is only accessible by signed applications. If you intend to use this element, please visit http://www.blackberry.com/go/codesigning to obtain a set of code signing keys. Code signing is only required for applications running on BlackBerry smartphones; development on BlackBerry Smartphone Simulators can occur without code signing.
- Since:
- BlackBerry API 3.6.0
|
Method Summary |
|
String |
getAlgorithm()
Returns the name of this signing algorithm ( "DSA/" + digest.getAlgorithm() ). |
|
String |
getDigestAlgorithm()
Returns the name of the digest algorithm used, eg "SHA1", etc. |
|
int |
getRLength()
Returns the length of r. |
|
int |
getSLength()
Returns the length of s. |
|
void |
reset()
Reinitializes the signer, preparing it to generate another signature. |
|
void |
sign(byte[] r,
int rOffset,
byte[] s,
int sOffset)
Performs the signing operation for the DSA algorithm. |
|
void |
update(byte[] data)
Adds additional message data to the signature. |
|
void |
update(byte[] data,
int offset,
int length)
Adds additional message data to the signature. |
|
void |
update(int data)
Adds additional message data to the signature. |
DSASignatureSigner
public DSASignatureSigner(DSAPrivateKey key)
throws CryptoTokenException,
CryptoUnsupportedOperationException
- Constructs a
DSASignatureSigner object which uses SHA-1 to compute the signature.
- Parameters:
key - The private key to use.
- Throws:
CryptoTokenException - Thrown if an error occurs with the crypto
token or the crypto token is invalid.
CryptoUnsupportedOperationException - Thrown if a call is made to
an unsupported operation.- Category:
- Certicom: This element is part of the Certicom Cryptography APIs. The Certicom Cryptography APIs provide the tools you need, including ECC based algorithms, to integrate high performance data security into your applications, such as public key data encryption and decryption, digital signatures, and data authentication. Since the Certicom Cryptography API is already in the JDE, its use will remove the need for you to engage in time and resource intensive security integration so that you have lower development costs and a faster time to market. Use of the Certicom Cryptography API requires a license from Certicom. Please contact Certicom directly for more information on licensing fees and conditions.
Certicom Contact Information
Phone:905-507-4220
Email: sales@certicom.com
Website: http://www.certicom.com/rim
- Signed: This element is only accessible by signed applications. If you intend to use this element, please visit http://www.blackberry.com/go/codesigning to obtain a set of code signing keys. Code signing is only required for applications running on BlackBerry smartphones; development on BlackBerry Smartphone Simulators can occur without code signing.
- Since:
- BlackBerry API 3.6.0
DSASignatureSigner
public DSASignatureSigner(DSAPrivateKey key,
Digest digest)
throws CryptoTokenException,
CryptoUnsupportedOperationException
- Constructs a
DSASignatureSigner object which uses digest to compute the signature.
NOTE: If the digest has any state information in it when it is given to the signature
signer, this information will be incorparated into the signature. If you don't want this
information included, call the reset routine for the signature signer to delete it. A newly
created digest, which no update calls have been made too, has no state information in it by
default.
- Parameters:
key - The private key to use.digest - An instance of the digest algorithm to use.
- Throws:
CryptoTokenException - Thrown if an error occurs with the crypto
token or the crypto token is invalid.
CryptoUnsupportedOperationException - Thrown if a call is made to
an unsupported operation.- Category:
- Certicom: This element is part of the Certicom Cryptography APIs. The Certicom Cryptography APIs provide the tools you need, including ECC based algorithms, to integrate high performance data security into your applications, such as public key data encryption and decryption, digital signatures, and data authentication. Since the Certicom Cryptography API is already in the JDE, its use will remove the need for you to engage in time and resource intensive security integration so that you have lower development costs and a faster time to market. Use of the Certicom Cryptography API requires a license from Certicom. Please contact Certicom directly for more information on licensing fees and conditions.
Certicom Contact Information
Phone:905-507-4220
Email: sales@certicom.com
Website: http://www.certicom.com/rim
- Signed: This element is only accessible by signed applications. If you intend to use this element, please visit http://www.blackberry.com/go/codesigning to obtain a set of code signing keys. Code signing is only required for applications running on BlackBerry smartphones; development on BlackBerry Smartphone Simulators can occur without code signing.
- Since:
- BlackBerry API 3.6.0
getAlgorithm
public String getAlgorithm()
- Returns the name of this signing algorithm (
"DSA/" + digest.getAlgorithm() ).
- Specified by:
getAlgorithm in interface SignatureSigner
- Returns:
- A String that represents the name of the algorithm.
- Category:
- Certicom: This element is part of the Certicom Cryptography APIs. The Certicom Cryptography APIs provide the tools you need, including ECC based algorithms, to integrate high performance data security into your applications, such as public key data encryption and decryption, digital signatures, and data authentication. Since the Certicom Cryptography API is already in the JDE, its use will remove the need for you to engage in time and resource intensive security integration so that you have lower development costs and a faster time to market. Use of the Certicom Cryptography API requires a license from Certicom. Please contact Certicom directly for more information on licensing fees and conditions.
Certicom Contact Information
Phone:905-507-4220
Email: sales@certicom.com
Website: http://www.certicom.com/rim
- Signed: This element is only accessible by signed applications. If you intend to use this element, please visit http://www.blackberry.com/go/codesigning to obtain a set of code signing keys. Code signing is only required for applications running on BlackBerry smartphones; development on BlackBerry Smartphone Simulators can occur without code signing.
- Since:
- BlackBerry API 3.6.0
getDigestAlgorithm
public String getDigestAlgorithm()
- Returns the name of the digest algorithm used, eg "SHA1", etc.
- Specified by:
getDigestAlgorithm in interface SignatureSigner
- Returns:
- A String that represents the name of the algorithm.
- Category:
- Certicom: This element is part of the Certicom Cryptography APIs. The Certicom Cryptography APIs provide the tools you need, including ECC based algorithms, to integrate high performance data security into your applications, such as public key data encryption and decryption, digital signatures, and data authentication. Since the Certicom Cryptography API is already in the JDE, its use will remove the need for you to engage in time and resource intensive security integration so that you have lower development costs and a faster time to market. Use of the Certicom Cryptography API requires a license from Certicom. Please contact Certicom directly for more information on licensing fees and conditions.
Certicom Contact Information
Phone:905-507-4220
Email: sales@certicom.com
Website: http://www.certicom.com/rim
- Signed: This element is only accessible by signed applications. If you intend to use this element, please visit http://www.blackberry.com/go/codesigning to obtain a set of code signing keys. Code signing is only required for applications running on BlackBerry smartphones; development on BlackBerry Smartphone Simulators can occur without code signing.
- Since:
- BlackBerry API 3.6.0
reset
public void reset()
- Description copied from interface:
SignatureSigner
- Reinitializes the signer, preparing it to generate another signature.
- Specified by:
reset in interface SignatureSigner
- Category:
- Certicom: This element is part of the Certicom Cryptography APIs. The Certicom Cryptography APIs provide the tools you need, including ECC based algorithms, to integrate high performance data security into your applications, such as public key data encryption and decryption, digital signatures, and data authentication. Since the Certicom Cryptography API is already in the JDE, its use will remove the need for you to engage in time and resource intensive security integration so that you have lower development costs and a faster time to market. Use of the Certicom Cryptography API requires a license from Certicom. Please contact Certicom directly for more information on licensing fees and conditions.
Certicom Contact Information
Phone:905-507-4220
Email: sales@certicom.com
Website: http://www.certicom.com/rim
- Signed: This element is only accessible by signed applications. If you intend to use this element, please visit http://www.blackberry.com/go/codesigning to obtain a set of code signing keys. Code signing is only required for applications running on BlackBerry smartphones; development on BlackBerry Smartphone Simulators can occur without code signing.
- Since:
- BlackBerry API 3.6.0
update
public void update(int data)
- Description copied from interface:
SignatureSigner
- Adds additional message data to the signature.
- Specified by:
update in interface SignatureSigner
- Parameters:
data - The byte to be hashed.- Category:
- Certicom: This element is part of the Certicom Cryptography APIs. The Certicom Cryptography APIs provide the tools you need, including ECC based algorithms, to integrate high performance data security into your applications, such as public key data encryption and decryption, digital signatures, and data authentication. Since the Certicom Cryptography API is already in the JDE, its use will remove the need for you to engage in time and resource intensive security integration so that you have lower development costs and a faster time to market. Use of the Certicom Cryptography API requires a license from Certicom. Please contact Certicom directly for more information on licensing fees and conditions.
Certicom Contact Information
Phone:905-507-4220
Email: sales@certicom.com
Website: http://www.certicom.com/rim
- Signed: This element is only accessible by signed applications. If you intend to use this element, please visit http://www.blackberry.com/go/codesigning to obtain a set of code signing keys. Code signing is only required for applications running on BlackBerry smartphones; development on BlackBerry Smartphone Simulators can occur without code signing.
- Since:
- BlackBerry API 3.6.0
update
public void update(byte[] data)
- Description copied from interface:
SignatureSigner
- Adds additional message data to the signature.
- Specified by:
update in interface SignatureSigner
- Parameters:
data - The message data to hash.- Category:
- Certicom: This element is part of the Certicom Cryptography APIs. The Certicom Cryptography APIs provide the tools you need, including ECC based algorithms, to integrate high performance data security into your applications, such as public key data encryption and decryption, digital signatures, and data authentication. Since the Certicom Cryptography API is already in the JDE, its use will remove the need for you to engage in time and resource intensive security integration so that you have lower development costs and a faster time to market. Use of the Certicom Cryptography API requires a license from Certicom. Please contact Certicom directly for more information on licensing fees and conditions.
Certicom Contact Information
Phone:905-507-4220
Email: sales@certicom.com
Website: http://www.certicom.com/rim
- Signed: This element is only accessible by signed applications. If you intend to use this element, please visit http://www.blackberry.com/go/codesigning to obtain a set of code signing keys. Code signing is only required for applications running on BlackBerry smartphones; development on BlackBerry Smartphone Simulators can occur without code signing.
- Since:
- BlackBerry API 3.6.0
update
public void update(byte[] data,
int offset,
int length)
- Description copied from interface:
SignatureSigner
- Adds additional message data to the signature.
- Specified by:
update in interface SignatureSigner
- Parameters:
data - The message data to hash.offset - The offset, or the initial position to start reading in the data.length - How much data to read.- Category:
- Certicom: This element is part of the Certicom Cryptography APIs. The Certicom Cryptography APIs provide the tools you need, including ECC based algorithms, to integrate high performance data security into your applications, such as public key data encryption and decryption, digital signatures, and data authentication. Since the Certicom Cryptography API is already in the JDE, its use will remove the need for you to engage in time and resource intensive security integration so that you have lower development costs and a faster time to market. Use of the Certicom Cryptography API requires a license from Certicom. Please contact Certicom directly for more information on licensing fees and conditions.
Certicom Contact Information
Phone:905-507-4220
Email: sales@certicom.com
Website: http://www.certicom.com/rim
- Signed: This element is only accessible by signed applications. If you intend to use this element, please visit http://www.blackberry.com/go/codesigning to obtain a set of code signing keys. Code signing is only required for applications running on BlackBerry smartphones; development on BlackBerry Smartphone Simulators can occur without code signing.
- Since:
- BlackBerry API 3.6.0
getRLength
public int getRLength()
- Returns the length of r.
- Returns:
- An integer representing the length of r.
- Category:
- Certicom: This element is part of the Certicom Cryptography APIs. The Certicom Cryptography APIs provide the tools you need, including ECC based algorithms, to integrate high performance data security into your applications, such as public key data encryption and decryption, digital signatures, and data authentication. Since the Certicom Cryptography API is already in the JDE, its use will remove the need for you to engage in time and resource intensive security integration so that you have lower development costs and a faster time to market. Use of the Certicom Cryptography API requires a license from Certicom. Please contact Certicom directly for more information on licensing fees and conditions.
Certicom Contact Information
Phone:905-507-4220
Email: sales@certicom.com
Website: http://www.certicom.com/rim
- Signed: This element is only accessible by signed applications. If you intend to use this element, please visit http://www.blackberry.com/go/codesigning to obtain a set of code signing keys. Code signing is only required for applications running on BlackBerry smartphones; development on BlackBerry Smartphone Simulators can occur without code signing.
- Since:
- BlackBerry API 3.6.0
getSLength
public int getSLength()
- Returns the length of s.
- Returns:
- An integer representing the length of s.
- Category:
- Certicom: This element is part of the Certicom Cryptography APIs. The Certicom Cryptography APIs provide the tools you need, including ECC based algorithms, to integrate high performance data security into your applications, such as public key data encryption and decryption, digital signatures, and data authentication. Since the Certicom Cryptography API is already in the JDE, its use will remove the need for you to engage in time and resource intensive security integration so that you have lower development costs and a faster time to market. Use of the Certicom Cryptography API requires a license from Certicom. Please contact Certicom directly for more information on licensing fees and conditions.
Certicom Contact Information
Phone:905-507-4220
Email: sales@certicom.com
Website: http://www.certicom.com/rim
- Signed: This element is only accessible by signed applications. If you intend to use this element, please visit http://www.blackberry.com/go/codesigning to obtain a set of code signing keys. Code signing is only required for applications running on BlackBerry smartphones; development on BlackBerry Smartphone Simulators can occur without code signing.
- Since:
- BlackBerry API 3.6.0
sign
public void sign(byte[] r,
int rOffset,
byte[] s,
int sOffset)
throws CryptoTokenException,
CryptoUnsupportedOperationException
- Performs the signing operation for the DSA algorithm.
- Parameters:
r - A byte array containing the r component of the signature.rOffset - The starting offset in the r byte array.s - A byte array containing the s component of the signature.sOffset - The starting offset in the s byte array.
- Throws:
CryptoTokenException - Thrown if an error occurs with the crypto
token or the crypto token is invalid.
CryptoUnsupportedOperationException - Thrown if a call is made to
an unsupported operation.- Category:
- Certicom: This element is part of the Certicom Cryptography APIs. The Certicom Cryptography APIs provide the tools you need, including ECC based algorithms, to integrate high performance data security into your applications, such as public key data encryption and decryption, digital signatures, and data authentication. Since the Certicom Cryptography API is already in the JDE, its use will remove the need for you to engage in time and resource intensive security integration so that you have lower development costs and a faster time to market. Use of the Certicom Cryptography API requires a license from Certicom. Please contact Certicom directly for more information on licensing fees and conditions.
Certicom Contact Information
Phone:905-507-4220
Email: sales@certicom.com
Website: http://www.certicom.com/rim
- Signed: This element is only accessible by signed applications. If you intend to use this element, please visit http://www.blackberry.com/go/codesigning to obtain a set of code signing keys. Code signing is only required for applications running on BlackBerry smartphones; development on BlackBerry Smartphone Simulators can occur without code signing.
- Since:
- BlackBerry API 3.6.0
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