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## org.bouncycastle.cms
Class SignerInformation

    java.lang.Object
      org.bouncycastle.cms.SignerInformation

    public class SignerInformation

extends java.lang.Object

an expanded SignerInfo block from a CMS Signed message

Method Summary
`static SignerInformation` | `addCounterSigners(SignerInformation signerInformation, SignerInformationStore counterSigners)` Return a signer information object with passed in SignerInformationStore representing counter signatures attached as an unsigned attribute.
`byte[]` | `getContentDigest()` return the content digest that was calculated during verification.
`SignerInformationStore` | `getCounterSignatures()` Return a SignerInformationStore containing the counter signatures attached to this signer.
`java.lang.String` | `getDigestAlgOID()` return the object identifier for the signature.
`org.bouncycastle.asn1.x509.AlgorithmIdentifier` | `getDigestAlgorithmID()`
`byte[]` | `getDigestAlgParams()` return the signature parameters, or null if there aren't any.
`byte[]` | `getEncodedSignedAttributes()` return the DER encoding of the signed attributes.
`java.lang.String` | `getEncryptionAlgOID()` return the object identifier for the signature.
`byte[]` | `getEncryptionAlgParams()` return the signature/encryption algorithm parameters, or null if there aren't any.
`SignerId` | `getSID()`
`byte[]` | `getSignature()` return the encoded signature
`org.bouncycastle.asn1.cms.AttributeTable` | `getSignedAttributes()` return a table of the signed attributes - indexed by the OID of the attribute.
`org.bouncycastle.asn1.cms.AttributeTable` | `getUnsignedAttributes()` return a table of the unsigned attributes indexed by the OID of the attribute.
`int` | `getVersion()` return the version number for this objects underlying SignerInfo structure.
`static SignerInformation` | `replaceUnsignedAttributes(SignerInformation signerInformation, org.bouncycastle.asn1.cms.AttributeTable unsignedAttributes)` Return a signer information object with the passed in unsigned attributes replacing the ones that are current associated with the object passed in.
`org.bouncycastle.asn1.cms.SignerInfo` | `toSignerInfo()` Return the base ASN.1 CMS structure that this object contains.
`boolean` | `verify(java.security.PublicKey key, java.security.Provider sigProvider)` verify that the given public key successfully handles and confirms the signature associated with this signer.
`boolean` | `verify(java.security.PublicKey key, java.lang.String sigProvider)` verify that the given public key successfully handles and confirms the signature associated with this signer.
`boolean` | `verify(java.security.cert.X509Certificate cert, java.security.Provider sigProvider)` verify that the given certificate successfully handles and confirms the signature associated with this signer and, if a signingTime attribute is available, that the certificate was valid at the time the signature was generated.
`boolean` | `verify(java.security.cert.X509Certificate cert, java.lang.String sigProvider)` verify that the given certificate successfully handles and confirms the signature associated with this signer and, if a signingTime attribute is available, that the certificate was valid at the time the signature was generated.

Methods inherited from class java.lang.Object
`clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait`

Method Detail

### getSID

    public SignerId getSID()

### getVersion

    public int getVersion()

  return the version number for this objects underlying SignerInfo structure.

### getDigestAlgorithmID

    public org.bouncycastle.asn1.x509.AlgorithmIdentifier getDigestAlgorithmID()

### getDigestAlgOID

    public java.lang.String getDigestAlgOID()

  return the object identifier for the signature.

### getDigestAlgParams

    public byte[] getDigestAlgParams()

  return the signature parameters, or null if there aren't any.

### getContentDigest

    public byte[] getContentDigest()

  return the content digest that was calculated during verification.

### getEncryptionAlgOID

    public java.lang.String getEncryptionAlgOID()

  return the object identifier for the signature.

### getEncryptionAlgParams

    public byte[] getEncryptionAlgParams()

  return the signature/encryption algorithm parameters, or null if there aren't any.

### getSignedAttributes

    public org.bouncycastle.asn1.cms.AttributeTable getSignedAttributes()

  return a table of the signed attributes - indexed by the OID of the attribute.

### getUnsignedAttributes

    public org.bouncycastle.asn1.cms.AttributeTable getUnsignedAttributes()

  return a table of the unsigned attributes indexed by the OID of the attribute.

### getSignature

    public byte[] getSignature()

  return the encoded signature

### getCounterSignatures

    public SignerInformationStore getCounterSignatures()

  Return a SignerInformationStore containing the counter signatures attached to this signer. If no counter signatures are present an empty store is returned.

### getEncodedSignedAttributes

    public byte[] getEncodedSignedAttributes()
                                      throws java.io.IOException

  return the DER encoding of the signed attributes.

  Throws:
    `java.io.IOException` - if an encoding error occurs.

### verify

    public boolean verify(java.security.PublicKey key,
                          java.lang.String sigProvider)
                   throws java.security.NoSuchAlgorithmException,
                          java.security.NoSuchProviderException,
                          CMSException

  verify that the given public key successfully handles and confirms the signature associated with this signer.

  Throws:
    `java.security.NoSuchAlgorithmException`
    `java.security.NoSuchProviderException`
    `CMSException`

### verify

    public boolean verify(java.security.PublicKey key,
                          java.security.Provider sigProvider)
                   throws java.security.NoSuchAlgorithmException,
                          java.security.NoSuchProviderException,
                          CMSException

  verify that the given public key successfully handles and confirms the signature associated with this signer.

  Throws:
    `java.security.NoSuchAlgorithmException`
    `java.security.NoSuchProviderException`
    `CMSException`

### verify

    public boolean verify(java.security.cert.X509Certificate cert,
                          java.lang.String sigProvider)
                   throws java.security.NoSuchAlgorithmException,
                          java.security.NoSuchProviderException,
                          java.security.cert.CertificateExpiredException,
                          java.security.cert.CertificateNotYetValidException,
                          CMSException

  verify that the given certificate successfully handles and confirms the signature associated with this signer and, if a signingTime attribute is available, that the certificate was valid at the time the signature was generated.

  Throws:
    `java.security.NoSuchAlgorithmException`
    `java.security.NoSuchProviderException`
    `java.security.cert.CertificateExpiredException`
    `java.security.cert.CertificateNotYetValidException`
    `CMSException`

### verify

    public boolean verify(java.security.cert.X509Certificate cert,
                          java.security.Provider sigProvider)
                   throws java.security.NoSuchAlgorithmException,
                          java.security.cert.CertificateExpiredException,
                          java.security.cert.CertificateNotYetValidException,
                          CMSException

  verify that the given certificate successfully handles and confirms the signature associated with this signer and, if a signingTime attribute is available, that the certificate was valid at the time the signature was generated.

  Throws:
    `java.security.NoSuchAlgorithmException`
    `java.security.cert.CertificateExpiredException`
    `java.security.cert.CertificateNotYetValidException`
    `CMSException`

### toSignerInfo

    public org.bouncycastle.asn1.cms.SignerInfo toSignerInfo()

  Return the base ASN.1 CMS structure that this object contains.

  Returns:
    an object containing a CMS SignerInfo structure.

### replaceUnsignedAttributes

    public static SignerInformation replaceUnsignedAttributes(SignerInformation signerInformation,
                                                              org.bouncycastle.asn1.cms.AttributeTable unsignedAttributes)

  Return a signer information object with the passed in unsigned attributes replacing the ones that are current associated with the object passed in.

  Parameters:
    `signerInformation` - the signerInfo to be used as the basis.
    `unsignedAttributes` - the unsigned attributes to add.
  Returns:
    a copy of the original SignerInformationObject with the changed attributes.

### addCounterSigners

    public static SignerInformation addCounterSigners(SignerInformation signerInformation,
                                                      SignerInformationStore counterSigners)

  Return a signer information object with passed in SignerInformationStore representing counter signatures attached as an unsigned attribute.

  Parameters:
    `signerInformation` - the signerInfo to be used as the basis.
    `counterSigners` - signer info objects carrying counter signature.
  Returns:
    a copy of the original SignerInformationObject with the changed attributes.

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