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. 
class org.bouncycastle.cms.jcajce.JcaSimpleSignerInfoGeneratorBuilder$Helper
  minor version: 0
  major version: 59
  flags: flags: (0x0020) ACC_SUPER
  this_class: org.bouncycastle.cms.jcajce.JcaSimpleSignerInfoGeneratorBuilder$Helper
  super_class: java.lang.Object
{
  final org.bouncycastle.cms.jcajce.JcaSimpleSignerInfoGeneratorBuilder this$0;
    descriptor: Lorg/bouncycastle/cms/jcajce/JcaSimpleSignerInfoGeneratorBuilder;
    flags: (0x1010) ACC_FINAL, ACC_SYNTHETIC

  private void <init>(org.bouncycastle.cms.jcajce.JcaSimpleSignerInfoGeneratorBuilder);
    descriptor: (Lorg/bouncycastle/cms/jcajce/JcaSimpleSignerInfoGeneratorBuilder;)V
    flags: (0x0002) ACC_PRIVATE
    Code:
      stack=2, locals=2, args_size=2
        start local 0 // org.bouncycastle.cms.jcajce.JcaSimpleSignerInfoGeneratorBuilder$Helper this
         0: .line 151
            aload 0 /* this */
            aload 1
            putfield org.bouncycastle.cms.jcajce.JcaSimpleSignerInfoGeneratorBuilder$Helper.this$0:Lorg/bouncycastle/cms/jcajce/JcaSimpleSignerInfoGeneratorBuilder;
            aload 0 /* this */
            invokespecial java.lang.Object.<init>:()V
            return
        end local 0 // org.bouncycastle.cms.jcajce.JcaSimpleSignerInfoGeneratorBuilder$Helper this
      LocalVariableTable:
        Start  End  Slot  Name  Signature
            0    1     0  this  Lorg/bouncycastle/cms/jcajce/JcaSimpleSignerInfoGeneratorBuilder$Helper;
    MethodParameters:
        Name  Flags
      this$0  final

  org.bouncycastle.operator.ContentSigner createContentSigner(java.lang.String, java.security.PrivateKey);
    descriptor: (Ljava/lang/String;Ljava/security/PrivateKey;)Lorg/bouncycastle/operator/ContentSigner;
    flags: (0x0000) 
    Code:
      stack=3, locals=3, args_size=3
        start local 0 // org.bouncycastle.cms.jcajce.JcaSimpleSignerInfoGeneratorBuilder$Helper this
        start local 1 // java.lang.String algorithm
        start local 2 // java.security.PrivateKey privateKey
         0: .line 156
            new org.bouncycastle.operator.jcajce.JcaContentSignerBuilder
            dup
            aload 1 /* algorithm */
            invokespecial org.bouncycastle.operator.jcajce.JcaContentSignerBuilder.<init>:(Ljava/lang/String;)V
            aload 2 /* privateKey */
            invokevirtual org.bouncycastle.operator.jcajce.JcaContentSignerBuilder.build:(Ljava/security/PrivateKey;)Lorg/bouncycastle/operator/ContentSigner;
            areturn
        end local 2 // java.security.PrivateKey privateKey
        end local 1 // java.lang.String algorithm
        end local 0 // org.bouncycastle.cms.jcajce.JcaSimpleSignerInfoGeneratorBuilder$Helper this
      LocalVariableTable:
        Start  End  Slot        Name  Signature
            0    1     0        this  Lorg/bouncycastle/cms/jcajce/JcaSimpleSignerInfoGeneratorBuilder$Helper;
            0    1     1   algorithm  Ljava/lang/String;
            0    1     2  privateKey  Ljava/security/PrivateKey;
    Exceptions:
      throws org.bouncycastle.operator.OperatorCreationException
    MethodParameters:
            Name  Flags
      algorithm   
      privateKey  

  org.bouncycastle.operator.DigestCalculatorProvider createDigestCalculatorProvider();
    descriptor: ()Lorg/bouncycastle/operator/DigestCalculatorProvider;
    flags: (0x0000) 
    Code:
      stack=2, locals=1, args_size=1
        start local 0 // org.bouncycastle.cms.jcajce.JcaSimpleSignerInfoGeneratorBuilder$Helper this
         0: .line 162
            new org.bouncycastle.operator.jcajce.JcaDigestCalculatorProviderBuilder
            dup
            invokespecial org.bouncycastle.operator.jcajce.JcaDigestCalculatorProviderBuilder.<init>:()V
            invokevirtual org.bouncycastle.operator.jcajce.JcaDigestCalculatorProviderBuilder.build:()Lorg/bouncycastle/operator/DigestCalculatorProvider;
            areturn
        end local 0 // org.bouncycastle.cms.jcajce.JcaSimpleSignerInfoGeneratorBuilder$Helper this
      LocalVariableTable:
        Start  End  Slot  Name  Signature
            0    1     0  this  Lorg/bouncycastle/cms/jcajce/JcaSimpleSignerInfoGeneratorBuilder$Helper;
    Exceptions:
      throws org.bouncycastle.operator.OperatorCreationException
}
SourceFile: "JcaSimpleSignerInfoGeneratorBuilder.java"
NestHost: org.bouncycastle.cms.jcajce.JcaSimpleSignerInfoGeneratorBuilder
InnerClasses:
  private Helper = org.bouncycastle.cms.jcajce.JcaSimpleSignerInfoGeneratorBuilder$Helper of org.bouncycastle.cms.jcajce.JcaSimpleSignerInfoGeneratorBuilder