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.operator.jcajce.JcaDigestCalculatorProviderBuilder
  minor version: 0
  major version: 59
  flags: flags: (0x0021) ACC_PUBLIC, ACC_SUPER
  this_class: org.bouncycastle.operator.jcajce.JcaDigestCalculatorProviderBuilder
  super_class: java.lang.Object
{
  private org.bouncycastle.operator.jcajce.OperatorHelper helper;
    descriptor: Lorg/bouncycastle/operator/jcajce/OperatorHelper;
    flags: (0x0002) ACC_PRIVATE

  public void <init>();
    descriptor: ()V
    flags: (0x0001) ACC_PUBLIC
    Code:
      stack=5, locals=1, args_size=1
        start local 0 // org.bouncycastle.operator.jcajce.JcaDigestCalculatorProviderBuilder this
         0: .line 21
            aload 0 /* this */
            invokespecial java.lang.Object.<init>:()V
         1: .line 19
            aload 0 /* this */
            new org.bouncycastle.operator.jcajce.OperatorHelper
            dup
            new org.bouncycastle.jcajce.util.DefaultJcaJceHelper
            dup
            invokespecial org.bouncycastle.jcajce.util.DefaultJcaJceHelper.<init>:()V
            invokespecial org.bouncycastle.operator.jcajce.OperatorHelper.<init>:(Lorg/bouncycastle/jcajce/util/JcaJceHelper;)V
            putfield org.bouncycastle.operator.jcajce.JcaDigestCalculatorProviderBuilder.helper:Lorg/bouncycastle/operator/jcajce/OperatorHelper;
         2: .line 23
            return
        end local 0 // org.bouncycastle.operator.jcajce.JcaDigestCalculatorProviderBuilder this
      LocalVariableTable:
        Start  End  Slot  Name  Signature
            0    3     0  this  Lorg/bouncycastle/operator/jcajce/JcaDigestCalculatorProviderBuilder;

  public org.bouncycastle.operator.jcajce.JcaDigestCalculatorProviderBuilder setProvider(java.security.Provider);
    descriptor: (Ljava/security/Provider;)Lorg/bouncycastle/operator/jcajce/JcaDigestCalculatorProviderBuilder;
    flags: (0x0001) ACC_PUBLIC
    Code:
      stack=6, locals=2, args_size=2
        start local 0 // org.bouncycastle.operator.jcajce.JcaDigestCalculatorProviderBuilder this
        start local 1 // java.security.Provider provider
         0: .line 27
            aload 0 /* this */
            new org.bouncycastle.operator.jcajce.OperatorHelper
            dup
            new org.bouncycastle.jcajce.util.ProviderJcaJceHelper
            dup
            aload 1 /* provider */
            invokespecial org.bouncycastle.jcajce.util.ProviderJcaJceHelper.<init>:(Ljava/security/Provider;)V
            invokespecial org.bouncycastle.operator.jcajce.OperatorHelper.<init>:(Lorg/bouncycastle/jcajce/util/JcaJceHelper;)V
            putfield org.bouncycastle.operator.jcajce.JcaDigestCalculatorProviderBuilder.helper:Lorg/bouncycastle/operator/jcajce/OperatorHelper;
         1: .line 29
            aload 0 /* this */
            areturn
        end local 1 // java.security.Provider provider
        end local 0 // org.bouncycastle.operator.jcajce.JcaDigestCalculatorProviderBuilder this
      LocalVariableTable:
        Start  End  Slot      Name  Signature
            0    2     0      this  Lorg/bouncycastle/operator/jcajce/JcaDigestCalculatorProviderBuilder;
            0    2     1  provider  Ljava/security/Provider;
    MethodParameters:
          Name  Flags
      provider  

  public org.bouncycastle.operator.jcajce.JcaDigestCalculatorProviderBuilder setProvider(java.lang.String);
    descriptor: (Ljava/lang/String;)Lorg/bouncycastle/operator/jcajce/JcaDigestCalculatorProviderBuilder;
    flags: (0x0001) ACC_PUBLIC
    Code:
      stack=6, locals=2, args_size=2
        start local 0 // org.bouncycastle.operator.jcajce.JcaDigestCalculatorProviderBuilder this
        start local 1 // java.lang.String providerName
         0: .line 34
            aload 0 /* this */
            new org.bouncycastle.operator.jcajce.OperatorHelper
            dup
            new org.bouncycastle.jcajce.util.NamedJcaJceHelper
            dup
            aload 1 /* providerName */
            invokespecial org.bouncycastle.jcajce.util.NamedJcaJceHelper.<init>:(Ljava/lang/String;)V
            invokespecial org.bouncycastle.operator.jcajce.OperatorHelper.<init>:(Lorg/bouncycastle/jcajce/util/JcaJceHelper;)V
            putfield org.bouncycastle.operator.jcajce.JcaDigestCalculatorProviderBuilder.helper:Lorg/bouncycastle/operator/jcajce/OperatorHelper;
         1: .line 36
            aload 0 /* this */
            areturn
        end local 1 // java.lang.String providerName
        end local 0 // org.bouncycastle.operator.jcajce.JcaDigestCalculatorProviderBuilder this
      LocalVariableTable:
        Start  End  Slot          Name  Signature
            0    2     0          this  Lorg/bouncycastle/operator/jcajce/JcaDigestCalculatorProviderBuilder;
            0    2     1  providerName  Ljava/lang/String;
    MethodParameters:
              Name  Flags
      providerName  

  public org.bouncycastle.operator.DigestCalculatorProvider build();
    descriptor: ()Lorg/bouncycastle/operator/DigestCalculatorProvider;
    flags: (0x0001) ACC_PUBLIC
    Code:
      stack=3, locals=1, args_size=1
        start local 0 // org.bouncycastle.operator.jcajce.JcaDigestCalculatorProviderBuilder this
         0: .line 42
            new org.bouncycastle.operator.jcajce.JcaDigestCalculatorProviderBuilder$1
            dup
            aload 0 /* this */
            invokespecial org.bouncycastle.operator.jcajce.JcaDigestCalculatorProviderBuilder$1.<init>:(Lorg/bouncycastle/operator/jcajce/JcaDigestCalculatorProviderBuilder;)V
            areturn
        end local 0 // org.bouncycastle.operator.jcajce.JcaDigestCalculatorProviderBuilder this
      LocalVariableTable:
        Start  End  Slot  Name  Signature
            0    1     0  this  Lorg/bouncycastle/operator/jcajce/JcaDigestCalculatorProviderBuilder;
    Exceptions:
      throws org.bouncycastle.operator.OperatorCreationException
}
SourceFile: "JcaDigestCalculatorProviderBuilder.java"
NestMembers:
  org.bouncycastle.operator.jcajce.JcaDigestCalculatorProviderBuilder$1  org.bouncycastle.operator.jcajce.JcaDigestCalculatorProviderBuilder$1$1  org.bouncycastle.operator.jcajce.JcaDigestCalculatorProviderBuilder$DigestOutputStream
InnerClasses:
  org.bouncycastle.operator.jcajce.JcaDigestCalculatorProviderBuilder$1
  private DigestOutputStream = org.bouncycastle.operator.jcajce.JcaDigestCalculatorProviderBuilder$DigestOutputStream of org.bouncycastle.operator.jcajce.JcaDigestCalculatorProviderBuilder