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.asn1.x509.KeyUsage extends org.bouncycastle.asn1.ASN1Object
  minor version: 0
  major version: 59
  flags: flags: (0x0021) ACC_PUBLIC, ACC_SUPER
  this_class: org.bouncycastle.asn1.x509.KeyUsage
  super_class: org.bouncycastle.asn1.ASN1Object
{
  public static final int digitalSignature;
    descriptor: I
    flags: (0x0019) ACC_PUBLIC, ACC_STATIC, ACC_FINAL
    ConstantValue: 128

  public static final int nonRepudiation;
    descriptor: I
    flags: (0x0019) ACC_PUBLIC, ACC_STATIC, ACC_FINAL
    ConstantValue: 64

  public static final int keyEncipherment;
    descriptor: I
    flags: (0x0019) ACC_PUBLIC, ACC_STATIC, ACC_FINAL
    ConstantValue: 32

  public static final int dataEncipherment;
    descriptor: I
    flags: (0x0019) ACC_PUBLIC, ACC_STATIC, ACC_FINAL
    ConstantValue: 16

  public static final int keyAgreement;
    descriptor: I
    flags: (0x0019) ACC_PUBLIC, ACC_STATIC, ACC_FINAL
    ConstantValue: 8

  public static final int keyCertSign;
    descriptor: I
    flags: (0x0019) ACC_PUBLIC, ACC_STATIC, ACC_FINAL
    ConstantValue: 4

  public static final int cRLSign;
    descriptor: I
    flags: (0x0019) ACC_PUBLIC, ACC_STATIC, ACC_FINAL
    ConstantValue: 2

  public static final int encipherOnly;
    descriptor: I
    flags: (0x0019) ACC_PUBLIC, ACC_STATIC, ACC_FINAL
    ConstantValue: 1

  public static final int decipherOnly;
    descriptor: I
    flags: (0x0019) ACC_PUBLIC, ACC_STATIC, ACC_FINAL
    ConstantValue: 32768

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

  public static org.bouncycastle.asn1.x509.KeyUsage getInstance(java.lang.Object);
    descriptor: (Ljava/lang/Object;)Lorg/bouncycastle/asn1/x509/KeyUsage;
    flags: (0x0009) ACC_PUBLIC, ACC_STATIC
    Code:
      stack=3, locals=1, args_size=1
        start local 0 // java.lang.Object obj
         0: .line 41
            aload 0 /* obj */
            instanceof org.bouncycastle.asn1.x509.KeyUsage
            ifeq 2
         1: .line 43
            aload 0 /* obj */
            checkcast org.bouncycastle.asn1.x509.KeyUsage
            areturn
         2: .line 45
      StackMap locals:
      StackMap stack:
            aload 0 /* obj */
            ifnull 4
         3: .line 47
            new org.bouncycastle.asn1.x509.KeyUsage
            dup
            aload 0 /* obj */
            invokestatic org.bouncycastle.asn1.DERBitString.getInstance:(Ljava/lang/Object;)Lorg/bouncycastle/asn1/DERBitString;
            invokespecial org.bouncycastle.asn1.x509.KeyUsage.<init>:(Lorg/bouncycastle/asn1/DERBitString;)V
            areturn
         4: .line 50
      StackMap locals:
      StackMap stack:
            aconst_null
            areturn
        end local 0 // java.lang.Object obj
      LocalVariableTable:
        Start  End  Slot  Name  Signature
            0    5     0   obj  Ljava/lang/Object;
    MethodParameters:
      Name  Flags
      obj   

  public static org.bouncycastle.asn1.x509.KeyUsage fromExtensions(org.bouncycastle.asn1.x509.Extensions);
    descriptor: (Lorg/bouncycastle/asn1/x509/Extensions;)Lorg/bouncycastle/asn1/x509/KeyUsage;
    flags: (0x0009) ACC_PUBLIC, ACC_STATIC
    Code:
      stack=2, locals=1, args_size=1
        start local 0 // org.bouncycastle.asn1.x509.Extensions extensions
         0: .line 55
            aload 0 /* extensions */
            getstatic org.bouncycastle.asn1.x509.Extension.keyUsage:Lorg/bouncycastle/asn1/ASN1ObjectIdentifier;
            invokevirtual org.bouncycastle.asn1.x509.Extensions.getExtensionParsedValue:(Lorg/bouncycastle/asn1/ASN1ObjectIdentifier;)Lorg/bouncycastle/asn1/ASN1Encodable;
            invokestatic org.bouncycastle.asn1.x509.KeyUsage.getInstance:(Ljava/lang/Object;)Lorg/bouncycastle/asn1/x509/KeyUsage;
            areturn
        end local 0 // org.bouncycastle.asn1.x509.Extensions extensions
      LocalVariableTable:
        Start  End  Slot        Name  Signature
            0    1     0  extensions  Lorg/bouncycastle/asn1/x509/Extensions;
    MethodParameters:
            Name  Flags
      extensions  

  public void <init>(int);
    descriptor: (I)V
    flags: (0x0001) ACC_PUBLIC
    Code:
      stack=4, locals=2, args_size=2
        start local 0 // org.bouncycastle.asn1.x509.KeyUsage this
        start local 1 // int usage
         0: .line 65
            aload 0 /* this */
            invokespecial org.bouncycastle.asn1.ASN1Object.<init>:()V
         1: .line 68
            aload 0 /* this */
            new org.bouncycastle.asn1.DERBitString
            dup
            iload 1 /* usage */
            invokespecial org.bouncycastle.asn1.DERBitString.<init>:(I)V
            putfield org.bouncycastle.asn1.x509.KeyUsage.bitString:Lorg/bouncycastle/asn1/DERBitString;
         2: .line 69
            return
        end local 1 // int usage
        end local 0 // org.bouncycastle.asn1.x509.KeyUsage this
      LocalVariableTable:
        Start  End  Slot   Name  Signature
            0    3     0   this  Lorg/bouncycastle/asn1/x509/KeyUsage;
            0    3     1  usage  I
    MethodParameters:
       Name  Flags
      usage  

  private void <init>(org.bouncycastle.asn1.DERBitString);
    descriptor: (Lorg/bouncycastle/asn1/DERBitString;)V
    flags: (0x0002) ACC_PRIVATE
    Code:
      stack=2, locals=2, args_size=2
        start local 0 // org.bouncycastle.asn1.x509.KeyUsage this
        start local 1 // org.bouncycastle.asn1.DERBitString bitString
         0: .line 71
            aload 0 /* this */
            invokespecial org.bouncycastle.asn1.ASN1Object.<init>:()V
         1: .line 74
            aload 0 /* this */
            aload 1 /* bitString */
            putfield org.bouncycastle.asn1.x509.KeyUsage.bitString:Lorg/bouncycastle/asn1/DERBitString;
         2: .line 75
            return
        end local 1 // org.bouncycastle.asn1.DERBitString bitString
        end local 0 // org.bouncycastle.asn1.x509.KeyUsage this
      LocalVariableTable:
        Start  End  Slot       Name  Signature
            0    3     0       this  Lorg/bouncycastle/asn1/x509/KeyUsage;
            0    3     1  bitString  Lorg/bouncycastle/asn1/DERBitString;
    MethodParameters:
           Name  Flags
      bitString  

  public boolean hasUsages(int);
    descriptor: (I)Z
    flags: (0x0001) ACC_PUBLIC
    Code:
      stack=2, locals=2, args_size=2
        start local 0 // org.bouncycastle.asn1.x509.KeyUsage this
        start local 1 // int usages
         0: .line 85
            aload 0 /* this */
            getfield org.bouncycastle.asn1.x509.KeyUsage.bitString:Lorg/bouncycastle/asn1/DERBitString;
            invokevirtual org.bouncycastle.asn1.DERBitString.intValue:()I
            iload 1 /* usages */
            iand
            iload 1 /* usages */
            if_icmpne 1
            iconst_1
            ireturn
      StackMap locals:
      StackMap stack:
         1: iconst_0
            ireturn
        end local 1 // int usages
        end local 0 // org.bouncycastle.asn1.x509.KeyUsage this
      LocalVariableTable:
        Start  End  Slot    Name  Signature
            0    2     0    this  Lorg/bouncycastle/asn1/x509/KeyUsage;
            0    2     1  usages  I
    MethodParameters:
        Name  Flags
      usages  

  public byte[] getBytes();
    descriptor: ()[B
    flags: (0x0001) ACC_PUBLIC
    Code:
      stack=1, locals=1, args_size=1
        start local 0 // org.bouncycastle.asn1.x509.KeyUsage this
         0: .line 90
            aload 0 /* this */
            getfield org.bouncycastle.asn1.x509.KeyUsage.bitString:Lorg/bouncycastle/asn1/DERBitString;
            invokevirtual org.bouncycastle.asn1.DERBitString.getBytes:()[B
            areturn
        end local 0 // org.bouncycastle.asn1.x509.KeyUsage this
      LocalVariableTable:
        Start  End  Slot  Name  Signature
            0    1     0  this  Lorg/bouncycastle/asn1/x509/KeyUsage;

  public int getPadBits();
    descriptor: ()I
    flags: (0x0001) ACC_PUBLIC
    Code:
      stack=1, locals=1, args_size=1
        start local 0 // org.bouncycastle.asn1.x509.KeyUsage this
         0: .line 95
            aload 0 /* this */
            getfield org.bouncycastle.asn1.x509.KeyUsage.bitString:Lorg/bouncycastle/asn1/DERBitString;
            invokevirtual org.bouncycastle.asn1.DERBitString.getPadBits:()I
            ireturn
        end local 0 // org.bouncycastle.asn1.x509.KeyUsage this
      LocalVariableTable:
        Start  End  Slot  Name  Signature
            0    1     0  this  Lorg/bouncycastle/asn1/x509/KeyUsage;

  public java.lang.String toString();
    descriptor: ()Ljava/lang/String;
    flags: (0x0001) ACC_PUBLIC
    Code:
      stack=4, locals=2, args_size=1
        start local 0 // org.bouncycastle.asn1.x509.KeyUsage this
         0: .line 100
            aload 0 /* this */
            getfield org.bouncycastle.asn1.x509.KeyUsage.bitString:Lorg/bouncycastle/asn1/DERBitString;
            invokevirtual org.bouncycastle.asn1.DERBitString.getBytes:()[B
            astore 1 /* data */
        start local 1 // byte[] data
         1: .line 102
            aload 1 /* data */
            arraylength
            iconst_1
            if_icmpne 3
         2: .line 104
            new java.lang.StringBuilder
            dup
            ldc "KeyUsage: 0x"
            invokespecial java.lang.StringBuilder.<init>:(Ljava/lang/String;)V
            aload 1 /* data */
            iconst_0
            baload
            sipush 255
            iand
            invokestatic java.lang.Integer.toHexString:(I)Ljava/lang/String;
            invokevirtual java.lang.StringBuilder.append:(Ljava/lang/String;)Ljava/lang/StringBuilder;
            invokevirtual java.lang.StringBuilder.toString:()Ljava/lang/String;
            areturn
         3: .line 106
      StackMap locals: byte[]
      StackMap stack:
            new java.lang.StringBuilder
            dup
            ldc "KeyUsage: 0x"
            invokespecial java.lang.StringBuilder.<init>:(Ljava/lang/String;)V
            aload 1 /* data */
            iconst_1
            baload
            sipush 255
            iand
            bipush 8
            ishl
            aload 1 /* data */
            iconst_0
            baload
            sipush 255
            iand
            ior
            invokestatic java.lang.Integer.toHexString:(I)Ljava/lang/String;
            invokevirtual java.lang.StringBuilder.append:(Ljava/lang/String;)Ljava/lang/StringBuilder;
            invokevirtual java.lang.StringBuilder.toString:()Ljava/lang/String;
            areturn
        end local 1 // byte[] data
        end local 0 // org.bouncycastle.asn1.x509.KeyUsage this
      LocalVariableTable:
        Start  End  Slot  Name  Signature
            0    4     0  this  Lorg/bouncycastle/asn1/x509/KeyUsage;
            1    4     1  data  [B

  public org.bouncycastle.asn1.ASN1Primitive toASN1Primitive();
    descriptor: ()Lorg/bouncycastle/asn1/ASN1Primitive;
    flags: (0x0001) ACC_PUBLIC
    Code:
      stack=1, locals=1, args_size=1
        start local 0 // org.bouncycastle.asn1.x509.KeyUsage this
         0: .line 111
            aload 0 /* this */
            getfield org.bouncycastle.asn1.x509.KeyUsage.bitString:Lorg/bouncycastle/asn1/DERBitString;
            areturn
        end local 0 // org.bouncycastle.asn1.x509.KeyUsage this
      LocalVariableTable:
        Start  End  Slot  Name  Signature
            0    1     0  this  Lorg/bouncycastle/asn1/x509/KeyUsage;
}
SourceFile: "KeyUsage.java"