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.pkcs.bc.BcPKCS12PBEOutputEncryptorBuilder
  minor version: 0
  major version: 59
  flags: flags: (0x0021) ACC_PUBLIC, ACC_SUPER
  this_class: org.bouncycastle.pkcs.bc.BcPKCS12PBEOutputEncryptorBuilder
  super_class: java.lang.Object
{
  private org.bouncycastle.crypto.ExtendedDigest digest;
    descriptor: Lorg/bouncycastle/crypto/ExtendedDigest;
    flags: (0x0002) ACC_PRIVATE

  private org.bouncycastle.crypto.BufferedBlockCipher engine;
    descriptor: Lorg/bouncycastle/crypto/BufferedBlockCipher;
    flags: (0x0002) ACC_PRIVATE

  private org.bouncycastle.asn1.ASN1ObjectIdentifier algorithm;
    descriptor: Lorg/bouncycastle/asn1/ASN1ObjectIdentifier;
    flags: (0x0002) ACC_PRIVATE

  private java.security.SecureRandom random;
    descriptor: Ljava/security/SecureRandom;
    flags: (0x0002) ACC_PRIVATE

  private int iterationCount;
    descriptor: I
    flags: (0x0002) ACC_PRIVATE

  public void <init>(org.bouncycastle.asn1.ASN1ObjectIdentifier, org.bouncycastle.crypto.BlockCipher);
    descriptor: (Lorg/bouncycastle/asn1/ASN1ObjectIdentifier;Lorg/bouncycastle/crypto/BlockCipher;)V
    flags: (0x0001) ACC_PUBLIC
    Code:
      stack=5, locals=3, args_size=3
        start local 0 // org.bouncycastle.pkcs.bc.BcPKCS12PBEOutputEncryptorBuilder this
        start local 1 // org.bouncycastle.asn1.ASN1ObjectIdentifier algorithm
        start local 2 // org.bouncycastle.crypto.BlockCipher engine
         0: .line 32
            aload 0 /* this */
            aload 1 /* algorithm */
            aload 2 /* engine */
            new org.bouncycastle.crypto.digests.SHA1Digest
            dup
            invokespecial org.bouncycastle.crypto.digests.SHA1Digest.<init>:()V
            invokespecial org.bouncycastle.pkcs.bc.BcPKCS12PBEOutputEncryptorBuilder.<init>:(Lorg/bouncycastle/asn1/ASN1ObjectIdentifier;Lorg/bouncycastle/crypto/BlockCipher;Lorg/bouncycastle/crypto/ExtendedDigest;)V
         1: .line 33
            return
        end local 2 // org.bouncycastle.crypto.BlockCipher engine
        end local 1 // org.bouncycastle.asn1.ASN1ObjectIdentifier algorithm
        end local 0 // org.bouncycastle.pkcs.bc.BcPKCS12PBEOutputEncryptorBuilder this
      LocalVariableTable:
        Start  End  Slot       Name  Signature
            0    2     0       this  Lorg/bouncycastle/pkcs/bc/BcPKCS12PBEOutputEncryptorBuilder;
            0    2     1  algorithm  Lorg/bouncycastle/asn1/ASN1ObjectIdentifier;
            0    2     2     engine  Lorg/bouncycastle/crypto/BlockCipher;
    MethodParameters:
           Name  Flags
      algorithm  
      engine     

  public void <init>(org.bouncycastle.asn1.ASN1ObjectIdentifier, org.bouncycastle.crypto.BlockCipher, org.bouncycastle.crypto.ExtendedDigest);
    descriptor: (Lorg/bouncycastle/asn1/ASN1ObjectIdentifier;Lorg/bouncycastle/crypto/BlockCipher;Lorg/bouncycastle/crypto/ExtendedDigest;)V
    flags: (0x0001) ACC_PUBLIC
    Code:
      stack=6, locals=4, args_size=4
        start local 0 // org.bouncycastle.pkcs.bc.BcPKCS12PBEOutputEncryptorBuilder this
        start local 1 // org.bouncycastle.asn1.ASN1ObjectIdentifier algorithm
        start local 2 // org.bouncycastle.crypto.BlockCipher engine
        start local 3 // org.bouncycastle.crypto.ExtendedDigest pbeDigest
         0: .line 35
            aload 0 /* this */
            invokespecial java.lang.Object.<init>:()V
         1: .line 28
            aload 0 /* this */
            sipush 1024
            putfield org.bouncycastle.pkcs.bc.BcPKCS12PBEOutputEncryptorBuilder.iterationCount:I
         2: .line 37
            aload 0 /* this */
            aload 1 /* algorithm */
            putfield org.bouncycastle.pkcs.bc.BcPKCS12PBEOutputEncryptorBuilder.algorithm:Lorg/bouncycastle/asn1/ASN1ObjectIdentifier;
         3: .line 38
            aload 0 /* this */
            new org.bouncycastle.crypto.paddings.PaddedBufferedBlockCipher
            dup
            aload 2 /* engine */
            new org.bouncycastle.crypto.paddings.PKCS7Padding
            dup
            invokespecial org.bouncycastle.crypto.paddings.PKCS7Padding.<init>:()V
            invokespecial org.bouncycastle.crypto.paddings.PaddedBufferedBlockCipher.<init>:(Lorg/bouncycastle/crypto/BlockCipher;Lorg/bouncycastle/crypto/paddings/BlockCipherPadding;)V
            putfield org.bouncycastle.pkcs.bc.BcPKCS12PBEOutputEncryptorBuilder.engine:Lorg/bouncycastle/crypto/BufferedBlockCipher;
         4: .line 39
            aload 0 /* this */
            aload 3 /* pbeDigest */
            putfield org.bouncycastle.pkcs.bc.BcPKCS12PBEOutputEncryptorBuilder.digest:Lorg/bouncycastle/crypto/ExtendedDigest;
         5: .line 40
            return
        end local 3 // org.bouncycastle.crypto.ExtendedDigest pbeDigest
        end local 2 // org.bouncycastle.crypto.BlockCipher engine
        end local 1 // org.bouncycastle.asn1.ASN1ObjectIdentifier algorithm
        end local 0 // org.bouncycastle.pkcs.bc.BcPKCS12PBEOutputEncryptorBuilder this
      LocalVariableTable:
        Start  End  Slot       Name  Signature
            0    6     0       this  Lorg/bouncycastle/pkcs/bc/BcPKCS12PBEOutputEncryptorBuilder;
            0    6     1  algorithm  Lorg/bouncycastle/asn1/ASN1ObjectIdentifier;
            0    6     2     engine  Lorg/bouncycastle/crypto/BlockCipher;
            0    6     3  pbeDigest  Lorg/bouncycastle/crypto/ExtendedDigest;
    MethodParameters:
           Name  Flags
      algorithm  
      engine     
      pbeDigest  

  public org.bouncycastle.pkcs.bc.BcPKCS12PBEOutputEncryptorBuilder setIterationCount(int);
    descriptor: (I)Lorg/bouncycastle/pkcs/bc/BcPKCS12PBEOutputEncryptorBuilder;
    flags: (0x0001) ACC_PUBLIC
    Code:
      stack=2, locals=2, args_size=2
        start local 0 // org.bouncycastle.pkcs.bc.BcPKCS12PBEOutputEncryptorBuilder this
        start local 1 // int iterationCount
         0: .line 44
            aload 0 /* this */
            iload 1 /* iterationCount */
            putfield org.bouncycastle.pkcs.bc.BcPKCS12PBEOutputEncryptorBuilder.iterationCount:I
         1: .line 45
            aload 0 /* this */
            areturn
        end local 1 // int iterationCount
        end local 0 // org.bouncycastle.pkcs.bc.BcPKCS12PBEOutputEncryptorBuilder this
      LocalVariableTable:
        Start  End  Slot            Name  Signature
            0    2     0            this  Lorg/bouncycastle/pkcs/bc/BcPKCS12PBEOutputEncryptorBuilder;
            0    2     1  iterationCount  I
    MethodParameters:
                Name  Flags
      iterationCount  

  public org.bouncycastle.operator.OutputEncryptor build(char[]);
    descriptor: ([C)Lorg/bouncycastle/operator/OutputEncryptor;
    flags: (0x0001) ACC_PUBLIC
    Code:
      stack=5, locals=5, args_size=2
        start local 0 // org.bouncycastle.pkcs.bc.BcPKCS12PBEOutputEncryptorBuilder this
        start local 1 // char[] password
         0: .line 50
            aload 0 /* this */
            getfield org.bouncycastle.pkcs.bc.BcPKCS12PBEOutputEncryptorBuilder.random:Ljava/security/SecureRandom;
            ifnonnull 2
         1: .line 52
            aload 0 /* this */
            new java.security.SecureRandom
            dup
            invokespecial java.security.SecureRandom.<init>:()V
            putfield org.bouncycastle.pkcs.bc.BcPKCS12PBEOutputEncryptorBuilder.random:Ljava/security/SecureRandom;
         2: .line 55
      StackMap locals:
      StackMap stack:
            bipush 20
            newarray 8
            astore 2 /* salt */
        start local 2 // byte[] salt
         3: .line 57
            aload 0 /* this */
            getfield org.bouncycastle.pkcs.bc.BcPKCS12PBEOutputEncryptorBuilder.random:Ljava/security/SecureRandom;
            aload 2 /* salt */
            invokevirtual java.security.SecureRandom.nextBytes:([B)V
         4: .line 59
            new org.bouncycastle.asn1.pkcs.PKCS12PBEParams
            dup
            aload 2 /* salt */
            aload 0 /* this */
            getfield org.bouncycastle.pkcs.bc.BcPKCS12PBEOutputEncryptorBuilder.iterationCount:I
            invokespecial org.bouncycastle.asn1.pkcs.PKCS12PBEParams.<init>:([BI)V
            astore 3 /* pbeParams */
        start local 3 // org.bouncycastle.asn1.pkcs.PKCS12PBEParams pbeParams
         5: .line 61
            aload 0 /* this */
            getfield org.bouncycastle.pkcs.bc.BcPKCS12PBEOutputEncryptorBuilder.algorithm:Lorg/bouncycastle/asn1/ASN1ObjectIdentifier;
            aload 0 /* this */
            getfield org.bouncycastle.pkcs.bc.BcPKCS12PBEOutputEncryptorBuilder.digest:Lorg/bouncycastle/crypto/ExtendedDigest;
            aload 0 /* this */
            getfield org.bouncycastle.pkcs.bc.BcPKCS12PBEOutputEncryptorBuilder.engine:Lorg/bouncycastle/crypto/BufferedBlockCipher;
            invokevirtual org.bouncycastle.crypto.BufferedBlockCipher.getBlockSize:()I
            aload 3 /* pbeParams */
            aload 1 /* password */
            invokestatic org.bouncycastle.pkcs.bc.PKCS12PBEUtils.createCipherParameters:(Lorg/bouncycastle/asn1/ASN1ObjectIdentifier;Lorg/bouncycastle/crypto/ExtendedDigest;ILorg/bouncycastle/asn1/pkcs/PKCS12PBEParams;[C)Lorg/bouncycastle/crypto/CipherParameters;
            astore 4 /* params */
        start local 4 // org.bouncycastle.crypto.CipherParameters params
         6: .line 63
            aload 0 /* this */
            getfield org.bouncycastle.pkcs.bc.BcPKCS12PBEOutputEncryptorBuilder.engine:Lorg/bouncycastle/crypto/BufferedBlockCipher;
            iconst_1
            aload 4 /* params */
            invokevirtual org.bouncycastle.crypto.BufferedBlockCipher.init:(ZLorg/bouncycastle/crypto/CipherParameters;)V
         7: .line 65
            new org.bouncycastle.pkcs.bc.BcPKCS12PBEOutputEncryptorBuilder$1
            dup
            aload 0 /* this */
            aload 3 /* pbeParams */
            aload 1 /* password */
            invokespecial org.bouncycastle.pkcs.bc.BcPKCS12PBEOutputEncryptorBuilder$1.<init>:(Lorg/bouncycastle/pkcs/bc/BcPKCS12PBEOutputEncryptorBuilder;Lorg/bouncycastle/asn1/pkcs/PKCS12PBEParams;[C)V
            areturn
        end local 4 // org.bouncycastle.crypto.CipherParameters params
        end local 3 // org.bouncycastle.asn1.pkcs.PKCS12PBEParams pbeParams
        end local 2 // byte[] salt
        end local 1 // char[] password
        end local 0 // org.bouncycastle.pkcs.bc.BcPKCS12PBEOutputEncryptorBuilder this
      LocalVariableTable:
        Start  End  Slot       Name  Signature
            0    8     0       this  Lorg/bouncycastle/pkcs/bc/BcPKCS12PBEOutputEncryptorBuilder;
            0    8     1   password  [C
            3    8     2       salt  [B
            5    8     3  pbeParams  Lorg/bouncycastle/asn1/pkcs/PKCS12PBEParams;
            6    8     4     params  Lorg/bouncycastle/crypto/CipherParameters;
    MethodParameters:
          Name  Flags
      password  final
}
SourceFile: "BcPKCS12PBEOutputEncryptorBuilder.java"
NestMembers:
  org.bouncycastle.pkcs.bc.BcPKCS12PBEOutputEncryptorBuilder$1
InnerClasses:
  org.bouncycastle.pkcs.bc.BcPKCS12PBEOutputEncryptorBuilder$1