Class SignerInfo

public SignerInfo(BERReader ber)
            throws IOException

Parse a SignerInfo object.

A SignerInfo is a structure with the following ASN.1 syntax:

 SignerInfo ::= SEQUENCE {
   version                       Version, -- always 1 for PKCS7 v1.5
   issuerAndSerialNumber         IssuerAndSerialNumber, -- an INTEGER
   digestAlgorithm               DigestAlgorithmIdentifier,
   authenticatedAttributes   [0] IMPLICIT Attributes OPTIONAL,
   digestEncryptionAlgorithm     DigestEncryptionAlgorithmIdentifier,
   encryptedDigest               EncryptedDigest,
   unauthenticatedAttributes [1] IMPLICIT Attributes OPTIONAL }

 IssuerAndSerialNumber ::= SEQUENCE {
   issuer       Name,
   serialNumber CertificateSerialNumber
 }

 DigestAlgorithmIdentifier ::= AlgorithmIdentifier

 DigestEncryptionAlgorithmIdentifier ::= AlgorithmIdentifier

 EncryptedDigest ::= OCTET STRING
 

public SignerInfo(X500Principal issuer,
                  BigInteger serialNumber,
                  OID digestAlgorithmOID,
                  byte[] authenticatedAttributes,
                  OID digestEncryptionAlgorithmOID,
                  byte[] encryptedDigest,
                  byte[] unauthenticatedAttributes)

Constructs a new instance of SignerInfo given a designated set of fields.

Parameters:

issuer - the X.500 Principal name of the signer referenced by this instance.

serialNumber - the serial number of the certificate being used. Both this and the previous arguments are gleaned from the signer's certificate.

digestAlgorithmOID - the OID of the digest algorithm. When constructing the DigestAlgorithmIdentifier with this OID, the parameters part will be NULL.

authenticatedAttributes - the encoding of the set of authenticated attributes to use.

digestEncryptionAlgorithmOID - the OID of the digest encryption algorithm. When constructing the DigestEncryptionAlgorithmIdentifier with this OID, the parameters part will be NULL.

encryptedDigest - the encrypted hash generated with this signer's private key.

unauthenticatedAttributes - the encoding of the set of unauthencticated attributes.

public void encode(OutputStream out)
            throws IOException

Writes to the designated output stream the DER encoding of the current contents of this instance.

Parameters:

out - the destination output stream.

Throws:

IOException - if an I/O related exception occurs during the process.

public byte[] getAuthenticatedAttributes()

public OID getDigestAlgorithmId()

public byte[] getDigestAlgorithmParams()

public OID getDigestEncryptionAlgorithmId()

public byte[] getDigestEncryptionAlgorithmParams()

public byte[] getEncryptedDigest()

public X500Principal getIssuer()

public BigInteger getSerialNumber()

public byte[] getUnauthenticatedAttributes()

public BigInteger getVersion()