http://www.bouncycastle.org/java.html: The Bouncy Castle Java APIs for CMS, PKCS, EAC, TSP, CMP, CRMF, OCSP, and certificate generation. This jar contains APIs for JDK 1.5 to JDK 1.8. The APIs can be used in conjunction with a JCE/JCA provider such as the one provided with the Bouncy Castle Cryptography APIs.
  • The Legion of the Bouncy Castle Inc. 
public abstract class org.bouncycastle.cms.bc.BcKEKRecipient implements org.bouncycastle.cms.KEKRecipient
  minor version: 0
  major version: 59
  flags: flags: (0x0421) ACC_PUBLIC, ACC_SUPER, ACC_ABSTRACT
  this_class: org.bouncycastle.cms.bc.BcKEKRecipient
  super_class: java.lang.Object
{
  private org.bouncycastle.operator.SymmetricKeyUnwrapper unwrapper;
    descriptor: Lorg/bouncycastle/operator/SymmetricKeyUnwrapper;
    flags: (0x0002) ACC_PRIVATE

  public void <init>(org.bouncycastle.operator.bc.BcSymmetricKeyUnwrapper);
    descriptor: (Lorg/bouncycastle/operator/bc/BcSymmetricKeyUnwrapper;)V
    flags: (0x0001) ACC_PUBLIC
    Code:
      stack=2, locals=2, args_size=2
        start local 0 // org.bouncycastle.cms.bc.BcKEKRecipient this
        start local 1 // org.bouncycastle.operator.bc.BcSymmetricKeyUnwrapper unwrapper
         0: .line 16
            aload 0 /* this */
            invokespecial java.lang.Object.<init>:()V
         1: .line 18
            aload 0 /* this */
            aload 1 /* unwrapper */
            putfield org.bouncycastle.cms.bc.BcKEKRecipient.unwrapper:Lorg/bouncycastle/operator/SymmetricKeyUnwrapper;
         2: .line 19
            return
        end local 1 // org.bouncycastle.operator.bc.BcSymmetricKeyUnwrapper unwrapper
        end local 0 // org.bouncycastle.cms.bc.BcKEKRecipient this
      LocalVariableTable:
        Start  End  Slot       Name  Signature
            0    3     0       this  Lorg/bouncycastle/cms/bc/BcKEKRecipient;
            0    3     1  unwrapper  Lorg/bouncycastle/operator/bc/BcSymmetricKeyUnwrapper;
    MethodParameters:
           Name  Flags
      unwrapper  

  protected org.bouncycastle.crypto.CipherParameters extractSecretKey(org.bouncycastle.asn1.x509.AlgorithmIdentifier, org.bouncycastle.asn1.x509.AlgorithmIdentifier, byte[]);
    descriptor: (Lorg/bouncycastle/asn1/x509/AlgorithmIdentifier;Lorg/bouncycastle/asn1/x509/AlgorithmIdentifier;[B)Lorg/bouncycastle/crypto/CipherParameters;
    flags: (0x0004) ACC_PROTECTED
    Code:
      stack=5, locals=5, args_size=4
        start local 0 // org.bouncycastle.cms.bc.BcKEKRecipient this
        start local 1 // org.bouncycastle.asn1.x509.AlgorithmIdentifier keyEncryptionAlgorithm
        start local 2 // org.bouncycastle.asn1.x509.AlgorithmIdentifier contentEncryptionAlgorithm
        start local 3 // byte[] encryptedContentEncryptionKey
         0: .line 26
            aload 0 /* this */
            getfield org.bouncycastle.cms.bc.BcKEKRecipient.unwrapper:Lorg/bouncycastle/operator/SymmetricKeyUnwrapper;
            aload 2 /* contentEncryptionAlgorithm */
            aload 3 /* encryptedContentEncryptionKey */
            invokevirtual org.bouncycastle.operator.SymmetricKeyUnwrapper.generateUnwrappedKey:(Lorg/bouncycastle/asn1/x509/AlgorithmIdentifier;[B)Lorg/bouncycastle/operator/GenericKey;
            invokestatic org.bouncycastle.cms.bc.CMSUtils.getBcKey:(Lorg/bouncycastle/operator/GenericKey;)Lorg/bouncycastle/crypto/CipherParameters;
         1: areturn
         2: .line 28
      StackMap locals:
      StackMap stack: org.bouncycastle.operator.OperatorException
            astore 4 /* e */
        start local 4 // org.bouncycastle.operator.OperatorException e
         3: .line 30
            new org.bouncycastle.cms.CMSException
            dup
            new java.lang.StringBuilder
            dup
            ldc "exception unwrapping key: "
            invokespecial java.lang.StringBuilder.<init>:(Ljava/lang/String;)V
            aload 4 /* e */
            invokevirtual org.bouncycastle.operator.OperatorException.getMessage:()Ljava/lang/String;
            invokevirtual java.lang.StringBuilder.append:(Ljava/lang/String;)Ljava/lang/StringBuilder;
            invokevirtual java.lang.StringBuilder.toString:()Ljava/lang/String;
            aload 4 /* e */
            invokespecial org.bouncycastle.cms.CMSException.<init>:(Ljava/lang/String;Ljava/lang/Exception;)V
            athrow
        end local 4 // org.bouncycastle.operator.OperatorException e
        end local 3 // byte[] encryptedContentEncryptionKey
        end local 2 // org.bouncycastle.asn1.x509.AlgorithmIdentifier contentEncryptionAlgorithm
        end local 1 // org.bouncycastle.asn1.x509.AlgorithmIdentifier keyEncryptionAlgorithm
        end local 0 // org.bouncycastle.cms.bc.BcKEKRecipient this
      LocalVariableTable:
        Start  End  Slot                           Name  Signature
            0    4     0                           this  Lorg/bouncycastle/cms/bc/BcKEKRecipient;
            0    4     1         keyEncryptionAlgorithm  Lorg/bouncycastle/asn1/x509/AlgorithmIdentifier;
            0    4     2     contentEncryptionAlgorithm  Lorg/bouncycastle/asn1/x509/AlgorithmIdentifier;
            0    4     3  encryptedContentEncryptionKey  [B
            3    4     4                              e  Lorg/bouncycastle/operator/OperatorException;
      Exception table:
        from    to  target  type
           0     1       2  Class org.bouncycastle.operator.OperatorException
    Exceptions:
      throws org.bouncycastle.cms.CMSException
    MethodParameters:
                               Name  Flags
      keyEncryptionAlgorithm         
      contentEncryptionAlgorithm     
      encryptedContentEncryptionKey  
}
SourceFile: "BcKEKRecipient.java"