http://www.bouncycastle.org/java.html: The Bouncy Castle Crypto package is a Java implementation of cryptographic algorithms. This jar contains JCE provider and lightweight API for the Bouncy Castle Cryptography APIs for JDK 1.5 to JDK 1.8.
  • The Legion of the Bouncy Castle Inc. 
public class org.bouncycastle.crypto.generators.PKCS5S2ParametersGenerator extends org.bouncycastle.crypto.PBEParametersGenerator
  minor version: 0
  major version: 59
  flags: flags: (0x0021) ACC_PUBLIC, ACC_SUPER
  this_class: org.bouncycastle.crypto.generators.PKCS5S2ParametersGenerator
  super_class: org.bouncycastle.crypto.PBEParametersGenerator
{
  private org.bouncycastle.crypto.Mac hMac;
    descriptor: Lorg/bouncycastle/crypto/Mac;
    flags: (0x0002) ACC_PRIVATE

  private byte[] state;
    descriptor: [B
    flags: (0x0002) ACC_PRIVATE

  public void <init>();
    descriptor: ()V
    flags: (0x0001) ACC_PUBLIC
    Code:
      stack=2, locals=1, args_size=1
        start local 0 // org.bouncycastle.crypto.generators.PKCS5S2ParametersGenerator this
         0: .line 32
            aload 0 /* this */
            invokestatic org.bouncycastle.crypto.util.DigestFactory.createSHA1:()Lorg/bouncycastle/crypto/Digest;
            invokespecial org.bouncycastle.crypto.generators.PKCS5S2ParametersGenerator.<init>:(Lorg/bouncycastle/crypto/Digest;)V
         1: .line 33
            return
        end local 0 // org.bouncycastle.crypto.generators.PKCS5S2ParametersGenerator this
      LocalVariableTable:
        Start  End  Slot  Name  Signature
            0    2     0  this  Lorg/bouncycastle/crypto/generators/PKCS5S2ParametersGenerator;

  public void <init>(org.bouncycastle.crypto.Digest);
    descriptor: (Lorg/bouncycastle/crypto/Digest;)V
    flags: (0x0001) ACC_PUBLIC
    Code:
      stack=4, locals=2, args_size=2
        start local 0 // org.bouncycastle.crypto.generators.PKCS5S2ParametersGenerator this
        start local 1 // org.bouncycastle.crypto.Digest digest
         0: .line 35
            aload 0 /* this */
            invokespecial org.bouncycastle.crypto.PBEParametersGenerator.<init>:()V
         1: .line 37
            aload 0 /* this */
            new org.bouncycastle.crypto.macs.HMac
            dup
            aload 1 /* digest */
            invokespecial org.bouncycastle.crypto.macs.HMac.<init>:(Lorg/bouncycastle/crypto/Digest;)V
            putfield org.bouncycastle.crypto.generators.PKCS5S2ParametersGenerator.hMac:Lorg/bouncycastle/crypto/Mac;
         2: .line 38
            aload 0 /* this */
            aload 0 /* this */
            getfield org.bouncycastle.crypto.generators.PKCS5S2ParametersGenerator.hMac:Lorg/bouncycastle/crypto/Mac;
            invokeinterface org.bouncycastle.crypto.Mac.getMacSize:()I
            newarray 8
            putfield org.bouncycastle.crypto.generators.PKCS5S2ParametersGenerator.state:[B
         3: .line 39
            return
        end local 1 // org.bouncycastle.crypto.Digest digest
        end local 0 // org.bouncycastle.crypto.generators.PKCS5S2ParametersGenerator this
      LocalVariableTable:
        Start  End  Slot    Name  Signature
            0    4     0    this  Lorg/bouncycastle/crypto/generators/PKCS5S2ParametersGenerator;
            0    4     1  digest  Lorg/bouncycastle/crypto/Digest;
    MethodParameters:
        Name  Flags
      digest  

  private void F(byte[], int, byte[], byte[], int);
    descriptor: ([BI[B[BI)V
    flags: (0x0002) ACC_PRIVATE
    Code:
      stack=5, locals=8, args_size=6
        start local 0 // org.bouncycastle.crypto.generators.PKCS5S2ParametersGenerator this
        start local 1 // byte[] S
        start local 2 // int c
        start local 3 // byte[] iBuf
        start local 4 // byte[] out
        start local 5 // int outOff
         0: .line 48
            iload 2 /* c */
            ifne 2
         1: .line 50
            new java.lang.IllegalArgumentException
            dup
            ldc "iteration count must be at least 1."
            invokespecial java.lang.IllegalArgumentException.<init>:(Ljava/lang/String;)V
            athrow
         2: .line 53
      StackMap locals:
      StackMap stack:
            aload 1 /* S */
            ifnull 4
         3: .line 55
            aload 0 /* this */
            getfield org.bouncycastle.crypto.generators.PKCS5S2ParametersGenerator.hMac:Lorg/bouncycastle/crypto/Mac;
            aload 1 /* S */
            iconst_0
            aload 1 /* S */
            arraylength
            invokeinterface org.bouncycastle.crypto.Mac.update:([BII)V
         4: .line 58
      StackMap locals:
      StackMap stack:
            aload 0 /* this */
            getfield org.bouncycastle.crypto.generators.PKCS5S2ParametersGenerator.hMac:Lorg/bouncycastle/crypto/Mac;
            aload 3 /* iBuf */
            iconst_0
            aload 3 /* iBuf */
            arraylength
            invokeinterface org.bouncycastle.crypto.Mac.update:([BII)V
         5: .line 59
            aload 0 /* this */
            getfield org.bouncycastle.crypto.generators.PKCS5S2ParametersGenerator.hMac:Lorg/bouncycastle/crypto/Mac;
            aload 0 /* this */
            getfield org.bouncycastle.crypto.generators.PKCS5S2ParametersGenerator.state:[B
            iconst_0
            invokeinterface org.bouncycastle.crypto.Mac.doFinal:([BI)I
            pop
         6: .line 61
            aload 0 /* this */
            getfield org.bouncycastle.crypto.generators.PKCS5S2ParametersGenerator.state:[B
            iconst_0
            aload 4 /* out */
            iload 5 /* outOff */
            aload 0 /* this */
            getfield org.bouncycastle.crypto.generators.PKCS5S2ParametersGenerator.state:[B
            arraylength
            invokestatic java.lang.System.arraycopy:(Ljava/lang/Object;ILjava/lang/Object;II)V
         7: .line 63
            iconst_1
            istore 6 /* count */
        start local 6 // int count
         8: goto 17
         9: .line 65
      StackMap locals: int
      StackMap stack:
            aload 0 /* this */
            getfield org.bouncycastle.crypto.generators.PKCS5S2ParametersGenerator.hMac:Lorg/bouncycastle/crypto/Mac;
            aload 0 /* this */
            getfield org.bouncycastle.crypto.generators.PKCS5S2ParametersGenerator.state:[B
            iconst_0
            aload 0 /* this */
            getfield org.bouncycastle.crypto.generators.PKCS5S2ParametersGenerator.state:[B
            arraylength
            invokeinterface org.bouncycastle.crypto.Mac.update:([BII)V
        10: .line 66
            aload 0 /* this */
            getfield org.bouncycastle.crypto.generators.PKCS5S2ParametersGenerator.hMac:Lorg/bouncycastle/crypto/Mac;
            aload 0 /* this */
            getfield org.bouncycastle.crypto.generators.PKCS5S2ParametersGenerator.state:[B
            iconst_0
            invokeinterface org.bouncycastle.crypto.Mac.doFinal:([BI)I
            pop
        11: .line 68
            iconst_0
            istore 7 /* j */
        start local 7 // int j
        12: goto 15
        13: .line 70
      StackMap locals: int
      StackMap stack:
            aload 4 /* out */
            iload 5 /* outOff */
            iload 7 /* j */
            iadd
            dup2
            baload
            aload 0 /* this */
            getfield org.bouncycastle.crypto.generators.PKCS5S2ParametersGenerator.state:[B
            iload 7 /* j */
            baload
            ixor
            i2b
            bastore
        14: .line 68
            iinc 7 /* j */ 1
      StackMap locals:
      StackMap stack:
        15: iload 7 /* j */
            aload 0 /* this */
            getfield org.bouncycastle.crypto.generators.PKCS5S2ParametersGenerator.state:[B
            arraylength
            if_icmpne 13
        end local 7 // int j
        16: .line 63
            iinc 6 /* count */ 1
      StackMap locals:
      StackMap stack:
        17: iload 6 /* count */
            iload 2 /* c */
            if_icmplt 9
        end local 6 // int count
        18: .line 73
            return
        end local 5 // int outOff
        end local 4 // byte[] out
        end local 3 // byte[] iBuf
        end local 2 // int c
        end local 1 // byte[] S
        end local 0 // org.bouncycastle.crypto.generators.PKCS5S2ParametersGenerator this
      LocalVariableTable:
        Start  End  Slot    Name  Signature
            0   19     0    this  Lorg/bouncycastle/crypto/generators/PKCS5S2ParametersGenerator;
            0   19     1       S  [B
            0   19     2       c  I
            0   19     3    iBuf  [B
            0   19     4     out  [B
            0   19     5  outOff  I
            8   18     6   count  I
           12   16     7       j  I
    MethodParameters:
        Name  Flags
      S       
      c       
      iBuf    
      out     
      outOff  

  private byte[] generateDerivedKey(int);
    descriptor: (I)[B
    flags: (0x0002) ACC_PRIVATE
    Code:
      stack=6, locals=10, args_size=2
        start local 0 // org.bouncycastle.crypto.generators.PKCS5S2ParametersGenerator this
        start local 1 // int dkLen
         0: .line 78
            aload 0 /* this */
            getfield org.bouncycastle.crypto.generators.PKCS5S2ParametersGenerator.hMac:Lorg/bouncycastle/crypto/Mac;
            invokeinterface org.bouncycastle.crypto.Mac.getMacSize:()I
            istore 2 /* hLen */
        start local 2 // int hLen
         1: .line 79
            iload 1 /* dkLen */
            iload 2 /* hLen */
            iadd
            iconst_1
            isub
            iload 2 /* hLen */
            idiv
            istore 3 /* l */
        start local 3 // int l
         2: .line 80
            iconst_4
            newarray 8
            astore 4 /* iBuf */
        start local 4 // byte[] iBuf
         3: .line 81
            iload 3 /* l */
            iload 2 /* hLen */
            imul
            newarray 8
            astore 5 /* outBytes */
        start local 5 // byte[] outBytes
         4: .line 82
            iconst_0
            istore 6 /* outPos */
        start local 6 // int outPos
         5: .line 84
            new org.bouncycastle.crypto.params.KeyParameter
            dup
            aload 0 /* this */
            getfield org.bouncycastle.crypto.generators.PKCS5S2ParametersGenerator.password:[B
            invokespecial org.bouncycastle.crypto.params.KeyParameter.<init>:([B)V
            astore 7 /* param */
        start local 7 // org.bouncycastle.crypto.CipherParameters param
         6: .line 86
            aload 0 /* this */
            getfield org.bouncycastle.crypto.generators.PKCS5S2ParametersGenerator.hMac:Lorg/bouncycastle/crypto/Mac;
            aload 7 /* param */
            invokeinterface org.bouncycastle.crypto.Mac.init:(Lorg/bouncycastle/crypto/CipherParameters;)V
         7: .line 88
            iconst_1
            istore 8 /* i */
        start local 8 // int i
         8: goto 16
         9: .line 91
      StackMap locals: org.bouncycastle.crypto.generators.PKCS5S2ParametersGenerator int int int byte[] byte[] int org.bouncycastle.crypto.CipherParameters int
      StackMap stack:
            iconst_3
            istore 9 /* pos */
        start local 9 // int pos
        10: .line 92
            goto 12
        11: .line 94
      StackMap locals: int
      StackMap stack:
            iinc 9 /* pos */ -1
        12: .line 92
      StackMap locals:
      StackMap stack:
            aload 4 /* iBuf */
            iload 9 /* pos */
            dup2
            baload
            iconst_1
            iadd
            i2b
            dup_x2
            bastore
            ifeq 11
        13: .line 97
            aload 0 /* this */
            aload 0 /* this */
            getfield org.bouncycastle.crypto.generators.PKCS5S2ParametersGenerator.salt:[B
            aload 0 /* this */
            getfield org.bouncycastle.crypto.generators.PKCS5S2ParametersGenerator.iterationCount:I
            aload 4 /* iBuf */
            aload 5 /* outBytes */
            iload 6 /* outPos */
            invokevirtual org.bouncycastle.crypto.generators.PKCS5S2ParametersGenerator.F:([BI[B[BI)V
        14: .line 98
            iload 6 /* outPos */
            iload 2 /* hLen */
            iadd
            istore 6 /* outPos */
        end local 9 // int pos
        15: .line 88
            iinc 8 /* i */ 1
      StackMap locals:
      StackMap stack:
        16: iload 8 /* i */
            iload 3 /* l */
            if_icmple 9
        end local 8 // int i
        17: .line 101
            aload 5 /* outBytes */
            areturn
        end local 7 // org.bouncycastle.crypto.CipherParameters param
        end local 6 // int outPos
        end local 5 // byte[] outBytes
        end local 4 // byte[] iBuf
        end local 3 // int l
        end local 2 // int hLen
        end local 1 // int dkLen
        end local 0 // org.bouncycastle.crypto.generators.PKCS5S2ParametersGenerator this
      LocalVariableTable:
        Start  End  Slot      Name  Signature
            0   18     0      this  Lorg/bouncycastle/crypto/generators/PKCS5S2ParametersGenerator;
            0   18     1     dkLen  I
            1   18     2      hLen  I
            2   18     3         l  I
            3   18     4      iBuf  [B
            4   18     5  outBytes  [B
            5   18     6    outPos  I
            6   18     7     param  Lorg/bouncycastle/crypto/CipherParameters;
            8   17     8         i  I
           10   15     9       pos  I
    MethodParameters:
       Name  Flags
      dkLen  

  public org.bouncycastle.crypto.CipherParameters generateDerivedParameters(int);
    descriptor: (I)Lorg/bouncycastle/crypto/CipherParameters;
    flags: (0x0001) ACC_PUBLIC
    Code:
      stack=5, locals=3, args_size=2
        start local 0 // org.bouncycastle.crypto.generators.PKCS5S2ParametersGenerator this
        start local 1 // int keySize
         0: .line 114
            iload 1 /* keySize */
            bipush 8
            idiv
            istore 1 /* keySize */
         1: .line 116
            aload 0 /* this */
            iload 1 /* keySize */
            invokevirtual org.bouncycastle.crypto.generators.PKCS5S2ParametersGenerator.generateDerivedKey:(I)[B
            iconst_0
            iload 1 /* keySize */
            invokestatic org.bouncycastle.util.Arrays.copyOfRange:([BII)[B
            astore 2 /* dKey */
        start local 2 // byte[] dKey
         2: .line 118
            new org.bouncycastle.crypto.params.KeyParameter
            dup
            aload 2 /* dKey */
            iconst_0
            iload 1 /* keySize */
            invokespecial org.bouncycastle.crypto.params.KeyParameter.<init>:([BII)V
            areturn
        end local 2 // byte[] dKey
        end local 1 // int keySize
        end local 0 // org.bouncycastle.crypto.generators.PKCS5S2ParametersGenerator this
      LocalVariableTable:
        Start  End  Slot     Name  Signature
            0    3     0     this  Lorg/bouncycastle/crypto/generators/PKCS5S2ParametersGenerator;
            0    3     1  keySize  I
            2    3     2     dKey  [B
    MethodParameters:
         Name  Flags
      keySize  

  public org.bouncycastle.crypto.CipherParameters generateDerivedParameters(int, int);
    descriptor: (II)Lorg/bouncycastle/crypto/CipherParameters;
    flags: (0x0001) ACC_PUBLIC
    Code:
      stack=7, locals=4, args_size=3
        start local 0 // org.bouncycastle.crypto.generators.PKCS5S2ParametersGenerator this
        start local 1 // int keySize
        start local 2 // int ivSize
         0: .line 134
            iload 1 /* keySize */
            bipush 8
            idiv
            istore 1 /* keySize */
         1: .line 135
            iload 2 /* ivSize */
            bipush 8
            idiv
            istore 2 /* ivSize */
         2: .line 137
            aload 0 /* this */
            iload 1 /* keySize */
            iload 2 /* ivSize */
            iadd
            invokevirtual org.bouncycastle.crypto.generators.PKCS5S2ParametersGenerator.generateDerivedKey:(I)[B
            astore 3 /* dKey */
        start local 3 // byte[] dKey
         3: .line 139
            new org.bouncycastle.crypto.params.ParametersWithIV
            dup
            new org.bouncycastle.crypto.params.KeyParameter
            dup
            aload 3 /* dKey */
            iconst_0
            iload 1 /* keySize */
            invokespecial org.bouncycastle.crypto.params.KeyParameter.<init>:([BII)V
            aload 3 /* dKey */
            iload 1 /* keySize */
            iload 2 /* ivSize */
            invokespecial org.bouncycastle.crypto.params.ParametersWithIV.<init>:(Lorg/bouncycastle/crypto/CipherParameters;[BII)V
            areturn
        end local 3 // byte[] dKey
        end local 2 // int ivSize
        end local 1 // int keySize
        end local 0 // org.bouncycastle.crypto.generators.PKCS5S2ParametersGenerator this
      LocalVariableTable:
        Start  End  Slot     Name  Signature
            0    4     0     this  Lorg/bouncycastle/crypto/generators/PKCS5S2ParametersGenerator;
            0    4     1  keySize  I
            0    4     2   ivSize  I
            3    4     3     dKey  [B
    MethodParameters:
         Name  Flags
      keySize  
      ivSize   

  public org.bouncycastle.crypto.CipherParameters generateDerivedMacParameters(int);
    descriptor: (I)Lorg/bouncycastle/crypto/CipherParameters;
    flags: (0x0001) ACC_PUBLIC
    Code:
      stack=2, locals=2, args_size=2
        start local 0 // org.bouncycastle.crypto.generators.PKCS5S2ParametersGenerator this
        start local 1 // int keySize
         0: .line 152
            aload 0 /* this */
            iload 1 /* keySize */
            invokevirtual org.bouncycastle.crypto.generators.PKCS5S2ParametersGenerator.generateDerivedParameters:(I)Lorg/bouncycastle/crypto/CipherParameters;
            areturn
        end local 1 // int keySize
        end local 0 // org.bouncycastle.crypto.generators.PKCS5S2ParametersGenerator this
      LocalVariableTable:
        Start  End  Slot     Name  Signature
            0    1     0     this  Lorg/bouncycastle/crypto/generators/PKCS5S2ParametersGenerator;
            0    1     1  keySize  I
    MethodParameters:
         Name  Flags
      keySize  
}
SourceFile: "PKCS5S2ParametersGenerator.java"