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java.lang.Objectnet.rim.device.api.crypto.encoder.SignatureDecoder
net.rim.device.api.crypto.encoder.CMS_SignatureDecoder
public class CMS_SignatureDecoder
Implements the signature decoder for CMS.
Constructor Summary | ||
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CMS_SignatureDecoder()
Creates a new CMS_SignatureDecoder object. |
Method Summary | ||
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protected DecodedSignature |
decodeSignature(InputStream encodedSignature,
String signatureAlgorithm,
String digestAlgorithm)
Decodes the input stream. |
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protected DecodedSignature |
decodeSignature(ASN1InputByteArray parameters,
byte[] encodedSignature,
String algorithm,
String digestString)
The function a subclass would implement to finish decoding the signature. |
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protected String |
getEncodingAlgorithm()
Returns the encoding algorithm used, ie. |
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protected String[] |
getSignatureAlgorithms()
Returns the signature algorithm used, such as "DSA", or "RSA_PKCS1_SHA1". |
Methods inherited from class net.rim.device.api.crypto.encoder.SignatureDecoder |
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decode, decode, decode, decode, decode, getDecoder, register |
Methods inherited from class java.lang.Object |
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equals, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait |
Constructor Detail |
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public CMS_SignatureDecoder()
CMS_SignatureDecoder
object.
Method Detail |
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protected DecodedSignature decodeSignature(InputStream encodedSignature, String signatureAlgorithm, String digestAlgorithm) throws NoSuchAlgorithmException, InvalidSignatureEncodingException
SignatureDecoder
decodeSignature
in class SignatureDecoder
encodedSignature
- An input stream containing the encoding.signatureAlgorithm
- The signature algorithm used.
DecodedSignature
object from which a signature verifier can be obtained.
NoSuchAlgorithmException
- Thrown if the specified encoding algorithm cannot be found.
InvalidSignatureEncodingException
- Thrown if the signature is incorrectly formatted.protected DecodedSignature decodeSignature(ASN1InputByteArray parameters, byte[] encodedSignature, String algorithm, String digestString) throws NoSuchAlgorithmException, InvalidSignatureEncodingException
parameters
- The parameters that specify the details of the
encoding.encodedSignature
- A byte array containing the encoded signature.algorithm
- A String representing the name of the algorithm used to
encode the data.digestString
- A String representing any parameters required by the signature decoder. Often this is a
digest. Can be null.
NoSuchAlgorithmException
- Thrown if the specified algorithm is
invalid.
InvalidSignatureEncodingException
- Thrown if the signature is
improperly formatted or invalid.protected String getEncodingAlgorithm()
This method will always return the String "CMS".
getEncodingAlgorithm
in class SignatureDecoder
protected String[] getSignatureAlgorithms()
getSignatureAlgorithms
in class SignatureDecoder
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