|
|||||||||
| PREV CLASS NEXT CLASS | FRAMES NO FRAMES | ||||||||
| SUMMARY: INNER | FIELD | CONSTR | METHOD | DETAIL: FIELD | CONSTR | METHOD | ||||||||
java.lang.Object | +--net.rim.device.api.crypto.ECDSASignatureVerifier
Verifies an ECDSA signature on a message.
Elliptic Curve cryptography is defined in various standards including P1363 and ANSI X9.62. ECDSA is specifically defined in 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 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.
ECDSASignatureSigner| Constructor Summary | ||
|
ECDSASignatureVerifier(ECPublicKey key,
byte[] r,
int rOffset,
byte[] s,
int sOffset)
Constructs an ECDSASignatureVerifier object using SHA-1 for the digest. |
|
|
ECDSASignatureVerifier(ECPublicKey key,
Digest digest,
byte[] r,
int rOffset,
byte[] s,
int sOffset)
Constructs an ECDSASignatureVerifier object. |
|
| Method Summary | ||
|
String |
getAlgorithm()
Returns the name of the signing algorithm used, ie "ECDSA/" +
Digest.getAlgorithm(). |
|
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. |
|
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 ECDSASignatureVerifier(ECPublicKey key, byte[] r, int rOffset, byte[] s, int sOffset) throws CryptoTokenException, CryptoUnsupportedOperationException, InvalidSignatureEncodingException
ECDSASignatureVerifier object using SHA-1 for the digest.
NOTE: Also, if r and s point to the same buffer, then it is assumed
that the length of r and the length of s are both exactly the length of the private key.
key - The public key to use for verification.r - The r part of the signature to verify. Note that r is an element
of the finite field that the elliptic curve is defined over.rOffset - The offset, or start position, of the signature data
within the array r.s - The s part of the signature to verify. Note that s is an element
of the finite field that the elliptic curve is defined over.sOffset - The offset, or start position, of the signature data
within the array s.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.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 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.
public ECDSASignatureVerifier(ECPublicKey key, Digest digest, byte[] r, int rOffset, byte[] s, int sOffset) throws CryptoTokenException, CryptoUnsupportedOperationException, InvalidSignatureEncodingException
ECDSASignatureVerifier object.
NOTE: If the digest has any state information in it when it is given to the signature verifier, this information will be incorparated into the signature.
NOTE: Also, if r and s point to the same buffer, then it is assumed
that the length of r and the length of s are both exactly the length of the private key.
key - The public key to use for verification.digest - The digest to use for verification.r - The r part of the signature to verify. Note that r is an element
of the finite field that the elliptic curve is defined over.rOffset - The offset, or start position, of the signature data
within the array r.s - The s part of the signature to verify. Note that s is an element
of the finite field that the elliptic curve is defined over.sOffset - The offset, or start position, of the signature data within
the array s.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.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 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.
| Method Detail |
public String getAlgorithm()
"ECDSA/" +
Digest.getAlgorithm().
SignatureVerifierCerticom Contact Information
Phone:613-254-9258
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.
public void update(byte[] data)
SignatureVerifier
SignatureVerifierdata - A byte array containing the message data to hash.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 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.
public void update(byte[] data,
int offset,
int length)
SignatureVerifier
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.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 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.
public void update(int data)
SignatureVerifier
SignatureVerifierdata - The byte to be hashed.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 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.
public boolean verify()
throws CryptoTokenException,
CryptoUnsupportedOperationException
SignatureVerifier
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.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 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.
|
|||||||||
| PREV CLASS NEXT CLASS | FRAMES NO FRAMES | ||||||||
| SUMMARY: INNER | FIELD | CONSTR | METHOD | DETAIL: FIELD | CONSTR | METHOD | ||||||||
Copyright 1999-2008 Research In Motion Limited. 295 Phillip Street, Waterloo, Ontario, Canada, N2L 3W8. All Rights Reserved.
Copyright 1993-2003 Sun Microsystems, Inc. 901 San Antonio Road, Palo Alto, California, 94303, U.S.A.
Copyright 2002-2003 Nokia Corporation All Rights Reserved.
Java is a trademark or registered trademark of Sun Microsystems, Inc. in the US and other countries.