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.eac.operator.jcajce.ProviderEACHelper extends org.bouncycastle.eac.operator.jcajce.EACHelper
  minor version: 0
  major version: 59
  flags: flags: (0x0020) ACC_SUPER
  this_class: org.bouncycastle.eac.operator.jcajce.ProviderEACHelper
  super_class: org.bouncycastle.eac.operator.jcajce.EACHelper
{
  private final java.security.Provider provider;
    descriptor: Ljava/security/Provider;
    flags: (0x0012) ACC_PRIVATE, ACC_FINAL

  void <init>(java.security.Provider);
    descriptor: (Ljava/security/Provider;)V
    flags: (0x0000) 
    Code:
      stack=2, locals=2, args_size=2
        start local 0 // org.bouncycastle.eac.operator.jcajce.ProviderEACHelper this
        start local 1 // java.security.Provider provider
         0: .line 12
            aload 0 /* this */
            invokespecial org.bouncycastle.eac.operator.jcajce.EACHelper.<init>:()V
         1: .line 14
            aload 0 /* this */
            aload 1 /* provider */
            putfield org.bouncycastle.eac.operator.jcajce.ProviderEACHelper.provider:Ljava/security/Provider;
         2: .line 15
            return
        end local 1 // java.security.Provider provider
        end local 0 // org.bouncycastle.eac.operator.jcajce.ProviderEACHelper this
      LocalVariableTable:
        Start  End  Slot      Name  Signature
            0    3     0      this  Lorg/bouncycastle/eac/operator/jcajce/ProviderEACHelper;
            0    3     1  provider  Ljava/security/Provider;
    MethodParameters:
          Name  Flags
      provider  

  protected java.security.Signature createSignature(java.lang.String);
    descriptor: (Ljava/lang/String;)Ljava/security/Signature;
    flags: (0x0004) ACC_PROTECTED
    Code:
      stack=2, locals=2, args_size=2
        start local 0 // org.bouncycastle.eac.operator.jcajce.ProviderEACHelper this
        start local 1 // java.lang.String type
         0: .line 20
            aload 1 /* type */
            aload 0 /* this */
            getfield org.bouncycastle.eac.operator.jcajce.ProviderEACHelper.provider:Ljava/security/Provider;
            invokestatic java.security.Signature.getInstance:(Ljava/lang/String;Ljava/security/Provider;)Ljava/security/Signature;
            areturn
        end local 1 // java.lang.String type
        end local 0 // org.bouncycastle.eac.operator.jcajce.ProviderEACHelper this
      LocalVariableTable:
        Start  End  Slot  Name  Signature
            0    1     0  this  Lorg/bouncycastle/eac/operator/jcajce/ProviderEACHelper;
            0    1     1  type  Ljava/lang/String;
    Exceptions:
      throws java.security.NoSuchAlgorithmException
    MethodParameters:
      Name  Flags
      type  
}
SourceFile: "ProviderEACHelper.java"