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 class org.bouncycastle.cms.bc.BcKEKEnvelopedRecipient extends org.bouncycastle.cms.bc.BcKEKRecipient
  minor version: 0
  major version: 59
  flags: flags: (0x0021) ACC_PUBLIC, ACC_SUPER
  this_class: org.bouncycastle.cms.bc.BcKEKEnvelopedRecipient
  super_class: org.bouncycastle.cms.bc.BcKEKRecipient
{
  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.BcKEKEnvelopedRecipient this
        start local 1 // org.bouncycastle.operator.bc.BcSymmetricKeyUnwrapper unwrapper
         0: .line 19
            aload 0 /* this */
            aload 1 /* unwrapper */
            invokespecial org.bouncycastle.cms.bc.BcKEKRecipient.<init>:(Lorg/bouncycastle/operator/bc/BcSymmetricKeyUnwrapper;)V
         1: .line 20
            return
        end local 1 // org.bouncycastle.operator.bc.BcSymmetricKeyUnwrapper unwrapper
        end local 0 // org.bouncycastle.cms.bc.BcKEKEnvelopedRecipient this
      LocalVariableTable:
        Start  End  Slot       Name  Signature
            0    2     0       this  Lorg/bouncycastle/cms/bc/BcKEKEnvelopedRecipient;
            0    2     1  unwrapper  Lorg/bouncycastle/operator/bc/BcSymmetricKeyUnwrapper;
    MethodParameters:
           Name  Flags
      unwrapper  

  public org.bouncycastle.cms.RecipientOperator getRecipientOperator(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/cms/RecipientOperator;
    flags: (0x0001) ACC_PUBLIC
    Code:
      stack=7, locals=6, args_size=4
        start local 0 // org.bouncycastle.cms.bc.BcKEKEnvelopedRecipient 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 25
            aload 0 /* this */
            aload 1 /* keyEncryptionAlgorithm */
            aload 2 /* contentEncryptionAlgorithm */
            aload 3 /* encryptedContentEncryptionKey */
            invokevirtual org.bouncycastle.cms.bc.BcKEKEnvelopedRecipient.extractSecretKey:(Lorg/bouncycastle/asn1/x509/AlgorithmIdentifier;Lorg/bouncycastle/asn1/x509/AlgorithmIdentifier;[B)Lorg/bouncycastle/crypto/CipherParameters;
            checkcast org.bouncycastle.crypto.params.KeyParameter
            astore 4 /* secretKey */
        start local 4 // org.bouncycastle.crypto.params.KeyParameter secretKey
         1: .line 27
            iconst_0
            aload 4 /* secretKey */
            aload 2 /* contentEncryptionAlgorithm */
            invokestatic org.bouncycastle.cms.bc.EnvelopedDataHelper.createContentCipher:(ZLorg/bouncycastle/crypto/CipherParameters;Lorg/bouncycastle/asn1/x509/AlgorithmIdentifier;)Ljava/lang/Object;
            astore 5 /* dataCipher */
        start local 5 // java.lang.Object dataCipher
         2: .line 29
            new org.bouncycastle.cms.RecipientOperator
            dup
            new org.bouncycastle.cms.bc.BcKEKEnvelopedRecipient$1
            dup
            aload 0 /* this */
            aload 2 /* contentEncryptionAlgorithm */
            aload 5 /* dataCipher */
            invokespecial org.bouncycastle.cms.bc.BcKEKEnvelopedRecipient$1.<init>:(Lorg/bouncycastle/cms/bc/BcKEKEnvelopedRecipient;Lorg/bouncycastle/asn1/x509/AlgorithmIdentifier;Ljava/lang/Object;)V
            invokespecial org.bouncycastle.cms.RecipientOperator.<init>:(Lorg/bouncycastle/operator/InputDecryptor;)V
            areturn
        end local 5 // java.lang.Object dataCipher
        end local 4 // org.bouncycastle.crypto.params.KeyParameter secretKey
        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.BcKEKEnvelopedRecipient this
      LocalVariableTable:
        Start  End  Slot                           Name  Signature
            0    3     0                           this  Lorg/bouncycastle/cms/bc/BcKEKEnvelopedRecipient;
            0    3     1         keyEncryptionAlgorithm  Lorg/bouncycastle/asn1/x509/AlgorithmIdentifier;
            0    3     2     contentEncryptionAlgorithm  Lorg/bouncycastle/asn1/x509/AlgorithmIdentifier;
            0    3     3  encryptedContentEncryptionKey  [B
            1    3     4                      secretKey  Lorg/bouncycastle/crypto/params/KeyParameter;
            2    3     5                     dataCipher  Ljava/lang/Object;
    Exceptions:
      throws org.bouncycastle.cms.CMSException
    MethodParameters:
                               Name  Flags
      keyEncryptionAlgorithm         
      contentEncryptionAlgorithm     final
      encryptedContentEncryptionKey  
}
SourceFile: "BcKEKEnvelopedRecipient.java"
NestMembers:
  org.bouncycastle.cms.bc.BcKEKEnvelopedRecipient$1
InnerClasses:
  org.bouncycastle.cms.bc.BcKEKEnvelopedRecipient$1