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. 
public class org.bouncycastle.jce.provider.JCERSAPublicKey implements java.security.interfaces.RSAPublicKey
  minor version: 0
  major version: 59
  flags: flags: (0x0021) ACC_PUBLIC, ACC_SUPER
  this_class: org.bouncycastle.jce.provider.JCERSAPublicKey
  super_class: java.lang.Object
{
  static final long serialVersionUID;
    descriptor: J
    flags: (0x0018) ACC_STATIC, ACC_FINAL
    ConstantValue: 2675817738516720772

  private java.math.BigInteger modulus;
    descriptor: Ljava/math/BigInteger;
    flags: (0x0002) ACC_PRIVATE

  private java.math.BigInteger publicExponent;
    descriptor: Ljava/math/BigInteger;
    flags: (0x0002) ACC_PRIVATE

  void <init>(org.bouncycastle.crypto.params.RSAKeyParameters);
    descriptor: (Lorg/bouncycastle/crypto/params/RSAKeyParameters;)V
    flags: (0x0000) 
    Code:
      stack=2, locals=2, args_size=2
        start local 0 // org.bouncycastle.jce.provider.JCERSAPublicKey this
        start local 1 // org.bouncycastle.crypto.params.RSAKeyParameters key
         0: .line 24
            aload 0 /* this */
            invokespecial java.lang.Object.<init>:()V
         1: .line 27
            aload 0 /* this */
            aload 1 /* key */
            invokevirtual org.bouncycastle.crypto.params.RSAKeyParameters.getModulus:()Ljava/math/BigInteger;
            putfield org.bouncycastle.jce.provider.JCERSAPublicKey.modulus:Ljava/math/BigInteger;
         2: .line 28
            aload 0 /* this */
            aload 1 /* key */
            invokevirtual org.bouncycastle.crypto.params.RSAKeyParameters.getExponent:()Ljava/math/BigInteger;
            putfield org.bouncycastle.jce.provider.JCERSAPublicKey.publicExponent:Ljava/math/BigInteger;
         3: .line 29
            return
        end local 1 // org.bouncycastle.crypto.params.RSAKeyParameters key
        end local 0 // org.bouncycastle.jce.provider.JCERSAPublicKey this
      LocalVariableTable:
        Start  End  Slot  Name  Signature
            0    4     0  this  Lorg/bouncycastle/jce/provider/JCERSAPublicKey;
            0    4     1   key  Lorg/bouncycastle/crypto/params/RSAKeyParameters;
    MethodParameters:
      Name  Flags
      key   

  void <init>(java.security.spec.RSAPublicKeySpec);
    descriptor: (Ljava/security/spec/RSAPublicKeySpec;)V
    flags: (0x0000) 
    Code:
      stack=2, locals=2, args_size=2
        start local 0 // org.bouncycastle.jce.provider.JCERSAPublicKey this
        start local 1 // java.security.spec.RSAPublicKeySpec spec
         0: .line 31
            aload 0 /* this */
            invokespecial java.lang.Object.<init>:()V
         1: .line 34
            aload 0 /* this */
            aload 1 /* spec */
            invokevirtual java.security.spec.RSAPublicKeySpec.getModulus:()Ljava/math/BigInteger;
            putfield org.bouncycastle.jce.provider.JCERSAPublicKey.modulus:Ljava/math/BigInteger;
         2: .line 35
            aload 0 /* this */
            aload 1 /* spec */
            invokevirtual java.security.spec.RSAPublicKeySpec.getPublicExponent:()Ljava/math/BigInteger;
            putfield org.bouncycastle.jce.provider.JCERSAPublicKey.publicExponent:Ljava/math/BigInteger;
         3: .line 36
            return
        end local 1 // java.security.spec.RSAPublicKeySpec spec
        end local 0 // org.bouncycastle.jce.provider.JCERSAPublicKey this
      LocalVariableTable:
        Start  End  Slot  Name  Signature
            0    4     0  this  Lorg/bouncycastle/jce/provider/JCERSAPublicKey;
            0    4     1  spec  Ljava/security/spec/RSAPublicKeySpec;
    MethodParameters:
      Name  Flags
      spec  

  void <init>(java.security.interfaces.RSAPublicKey);
    descriptor: (Ljava/security/interfaces/RSAPublicKey;)V
    flags: (0x0000) 
    Code:
      stack=2, locals=2, args_size=2
        start local 0 // org.bouncycastle.jce.provider.JCERSAPublicKey this
        start local 1 // java.security.interfaces.RSAPublicKey key
         0: .line 38
            aload 0 /* this */
            invokespecial java.lang.Object.<init>:()V
         1: .line 41
            aload 0 /* this */
            aload 1 /* key */
            invokeinterface java.security.interfaces.RSAPublicKey.getModulus:()Ljava/math/BigInteger;
            putfield org.bouncycastle.jce.provider.JCERSAPublicKey.modulus:Ljava/math/BigInteger;
         2: .line 42
            aload 0 /* this */
            aload 1 /* key */
            invokeinterface java.security.interfaces.RSAPublicKey.getPublicExponent:()Ljava/math/BigInteger;
            putfield org.bouncycastle.jce.provider.JCERSAPublicKey.publicExponent:Ljava/math/BigInteger;
         3: .line 43
            return
        end local 1 // java.security.interfaces.RSAPublicKey key
        end local 0 // org.bouncycastle.jce.provider.JCERSAPublicKey this
      LocalVariableTable:
        Start  End  Slot  Name  Signature
            0    4     0  this  Lorg/bouncycastle/jce/provider/JCERSAPublicKey;
            0    4     1   key  Ljava/security/interfaces/RSAPublicKey;
    MethodParameters:
      Name  Flags
      key   

  void <init>(org.bouncycastle.asn1.x509.SubjectPublicKeyInfo);
    descriptor: (Lorg/bouncycastle/asn1/x509/SubjectPublicKeyInfo;)V
    flags: (0x0000) 
    Code:
      stack=3, locals=3, args_size=2
        start local 0 // org.bouncycastle.jce.provider.JCERSAPublicKey this
        start local 1 // org.bouncycastle.asn1.x509.SubjectPublicKeyInfo info
         0: .line 45
            aload 0 /* this */
            invokespecial java.lang.Object.<init>:()V
         1: .line 50
            new org.bouncycastle.asn1.x509.RSAPublicKeyStructure
            dup
            aload 1 /* info */
            invokevirtual org.bouncycastle.asn1.x509.SubjectPublicKeyInfo.getPublicKey:()Lorg/bouncycastle/asn1/DERObject;
            checkcast org.bouncycastle.asn1.ASN1Sequence
            invokespecial org.bouncycastle.asn1.x509.RSAPublicKeyStructure.<init>:(Lorg/bouncycastle/asn1/ASN1Sequence;)V
            astore 2 /* pubKey */
        start local 2 // org.bouncycastle.asn1.x509.RSAPublicKeyStructure pubKey
         2: .line 52
            aload 0 /* this */
            aload 2 /* pubKey */
            invokevirtual org.bouncycastle.asn1.x509.RSAPublicKeyStructure.getModulus:()Ljava/math/BigInteger;
            putfield org.bouncycastle.jce.provider.JCERSAPublicKey.modulus:Ljava/math/BigInteger;
         3: .line 53
            aload 0 /* this */
            aload 2 /* pubKey */
            invokevirtual org.bouncycastle.asn1.x509.RSAPublicKeyStructure.getPublicExponent:()Ljava/math/BigInteger;
            putfield org.bouncycastle.jce.provider.JCERSAPublicKey.publicExponent:Ljava/math/BigInteger;
        end local 2 // org.bouncycastle.asn1.x509.RSAPublicKeyStructure pubKey
         4: .line 54
            goto 7
         5: .line 55
      StackMap locals: org.bouncycastle.jce.provider.JCERSAPublicKey org.bouncycastle.asn1.x509.SubjectPublicKeyInfo
      StackMap stack: java.io.IOException
            pop
         6: .line 57
            new java.lang.IllegalArgumentException
            dup
            ldc "invalid info structure in RSA public key"
            invokespecial java.lang.IllegalArgumentException.<init>:(Ljava/lang/String;)V
            athrow
         7: .line 59
      StackMap locals:
      StackMap stack:
            return
        end local 1 // org.bouncycastle.asn1.x509.SubjectPublicKeyInfo info
        end local 0 // org.bouncycastle.jce.provider.JCERSAPublicKey this
      LocalVariableTable:
        Start  End  Slot    Name  Signature
            0    8     0    this  Lorg/bouncycastle/jce/provider/JCERSAPublicKey;
            0    8     1    info  Lorg/bouncycastle/asn1/x509/SubjectPublicKeyInfo;
            2    4     2  pubKey  Lorg/bouncycastle/asn1/x509/RSAPublicKeyStructure;
      Exception table:
        from    to  target  type
           1     4       5  Class java.io.IOException
    MethodParameters:
      Name  Flags
      info  

  public java.math.BigInteger getModulus();
    descriptor: ()Ljava/math/BigInteger;
    flags: (0x0001) ACC_PUBLIC
    Code:
      stack=1, locals=1, args_size=1
        start local 0 // org.bouncycastle.jce.provider.JCERSAPublicKey this
         0: .line 68
            aload 0 /* this */
            getfield org.bouncycastle.jce.provider.JCERSAPublicKey.modulus:Ljava/math/BigInteger;
            areturn
        end local 0 // org.bouncycastle.jce.provider.JCERSAPublicKey this
      LocalVariableTable:
        Start  End  Slot  Name  Signature
            0    1     0  this  Lorg/bouncycastle/jce/provider/JCERSAPublicKey;

  public java.math.BigInteger getPublicExponent();
    descriptor: ()Ljava/math/BigInteger;
    flags: (0x0001) ACC_PUBLIC
    Code:
      stack=1, locals=1, args_size=1
        start local 0 // org.bouncycastle.jce.provider.JCERSAPublicKey this
         0: .line 78
            aload 0 /* this */
            getfield org.bouncycastle.jce.provider.JCERSAPublicKey.publicExponent:Ljava/math/BigInteger;
            areturn
        end local 0 // org.bouncycastle.jce.provider.JCERSAPublicKey this
      LocalVariableTable:
        Start  End  Slot  Name  Signature
            0    1     0  this  Lorg/bouncycastle/jce/provider/JCERSAPublicKey;

  public java.lang.String getAlgorithm();
    descriptor: ()Ljava/lang/String;
    flags: (0x0001) ACC_PUBLIC
    Code:
      stack=1, locals=1, args_size=1
        start local 0 // org.bouncycastle.jce.provider.JCERSAPublicKey this
         0: .line 83
            ldc "RSA"
            areturn
        end local 0 // org.bouncycastle.jce.provider.JCERSAPublicKey this
      LocalVariableTable:
        Start  End  Slot  Name  Signature
            0    1     0  this  Lorg/bouncycastle/jce/provider/JCERSAPublicKey;

  public java.lang.String getFormat();
    descriptor: ()Ljava/lang/String;
    flags: (0x0001) ACC_PUBLIC
    Code:
      stack=1, locals=1, args_size=1
        start local 0 // org.bouncycastle.jce.provider.JCERSAPublicKey this
         0: .line 88
            ldc "X.509"
            areturn
        end local 0 // org.bouncycastle.jce.provider.JCERSAPublicKey this
      LocalVariableTable:
        Start  End  Slot  Name  Signature
            0    1     0  this  Lorg/bouncycastle/jce/provider/JCERSAPublicKey;

  public byte[] getEncoded();
    descriptor: ()[B
    flags: (0x0001) ACC_PUBLIC
    Code:
      stack=7, locals=2, args_size=1
        start local 0 // org.bouncycastle.jce.provider.JCERSAPublicKey this
         0: .line 93
            new org.bouncycastle.asn1.x509.SubjectPublicKeyInfo
            dup
            new org.bouncycastle.asn1.x509.AlgorithmIdentifier
            dup
            getstatic org.bouncycastle.asn1.pkcs.PKCSObjectIdentifiers.rsaEncryption:Lorg/bouncycastle/asn1/ASN1ObjectIdentifier;
            new org.bouncycastle.asn1.DERNull
            dup
            invokespecial org.bouncycastle.asn1.DERNull.<init>:()V
            invokespecial org.bouncycastle.asn1.x509.AlgorithmIdentifier.<init>:(Lorg/bouncycastle/asn1/DERObjectIdentifier;Lorg/bouncycastle/asn1/DEREncodable;)V
            new org.bouncycastle.asn1.x509.RSAPublicKeyStructure
            dup
            aload 0 /* this */
            invokevirtual org.bouncycastle.jce.provider.JCERSAPublicKey.getModulus:()Ljava/math/BigInteger;
            aload 0 /* this */
            invokevirtual org.bouncycastle.jce.provider.JCERSAPublicKey.getPublicExponent:()Ljava/math/BigInteger;
            invokespecial org.bouncycastle.asn1.x509.RSAPublicKeyStructure.<init>:(Ljava/math/BigInteger;Ljava/math/BigInteger;)V
            invokevirtual org.bouncycastle.asn1.x509.RSAPublicKeyStructure.getDERObject:()Lorg/bouncycastle/asn1/DERObject;
            invokespecial org.bouncycastle.asn1.x509.SubjectPublicKeyInfo.<init>:(Lorg/bouncycastle/asn1/x509/AlgorithmIdentifier;Lorg/bouncycastle/asn1/DEREncodable;)V
            astore 1 /* info */
        start local 1 // org.bouncycastle.asn1.x509.SubjectPublicKeyInfo info
         1: .line 95
            aload 1 /* info */
            invokevirtual org.bouncycastle.asn1.x509.SubjectPublicKeyInfo.getDEREncoded:()[B
            areturn
        end local 1 // org.bouncycastle.asn1.x509.SubjectPublicKeyInfo info
        end local 0 // org.bouncycastle.jce.provider.JCERSAPublicKey this
      LocalVariableTable:
        Start  End  Slot  Name  Signature
            0    2     0  this  Lorg/bouncycastle/jce/provider/JCERSAPublicKey;
            1    2     1  info  Lorg/bouncycastle/asn1/x509/SubjectPublicKeyInfo;

  public int hashCode();
    descriptor: ()I
    flags: (0x0001) ACC_PUBLIC
    Code:
      stack=2, locals=1, args_size=1
        start local 0 // org.bouncycastle.jce.provider.JCERSAPublicKey this
         0: .line 100
            aload 0 /* this */
            invokevirtual org.bouncycastle.jce.provider.JCERSAPublicKey.getModulus:()Ljava/math/BigInteger;
            invokevirtual java.math.BigInteger.hashCode:()I
            aload 0 /* this */
            invokevirtual org.bouncycastle.jce.provider.JCERSAPublicKey.getPublicExponent:()Ljava/math/BigInteger;
            invokevirtual java.math.BigInteger.hashCode:()I
            ixor
            ireturn
        end local 0 // org.bouncycastle.jce.provider.JCERSAPublicKey this
      LocalVariableTable:
        Start  End  Slot  Name  Signature
            0    1     0  this  Lorg/bouncycastle/jce/provider/JCERSAPublicKey;

  public boolean equals(java.lang.Object);
    descriptor: (Ljava/lang/Object;)Z
    flags: (0x0001) ACC_PUBLIC
    Code:
      stack=2, locals=3, args_size=2
        start local 0 // org.bouncycastle.jce.provider.JCERSAPublicKey this
        start local 1 // java.lang.Object o
         0: .line 105
            aload 1 /* o */
            aload 0 /* this */
            if_acmpne 2
         1: .line 107
            iconst_1
            ireturn
         2: .line 110
      StackMap locals:
      StackMap stack:
            aload 1 /* o */
            instanceof java.security.interfaces.RSAPublicKey
            ifne 4
         3: .line 112
            iconst_0
            ireturn
         4: .line 115
      StackMap locals:
      StackMap stack:
            aload 1 /* o */
            checkcast java.security.interfaces.RSAPublicKey
            astore 2 /* key */
        start local 2 // java.security.interfaces.RSAPublicKey key
         5: .line 117
            aload 0 /* this */
            invokevirtual org.bouncycastle.jce.provider.JCERSAPublicKey.getModulus:()Ljava/math/BigInteger;
            aload 2 /* key */
            invokeinterface java.security.interfaces.RSAPublicKey.getModulus:()Ljava/math/BigInteger;
            invokevirtual java.math.BigInteger.equals:(Ljava/lang/Object;)Z
            ifeq 8
         6: .line 118
            aload 0 /* this */
            invokevirtual org.bouncycastle.jce.provider.JCERSAPublicKey.getPublicExponent:()Ljava/math/BigInteger;
            aload 2 /* key */
            invokeinterface java.security.interfaces.RSAPublicKey.getPublicExponent:()Ljava/math/BigInteger;
            invokevirtual java.math.BigInteger.equals:(Ljava/lang/Object;)Z
            ifeq 8
         7: .line 117
            iconst_1
            ireturn
      StackMap locals: java.security.interfaces.RSAPublicKey
      StackMap stack:
         8: iconst_0
            ireturn
        end local 2 // java.security.interfaces.RSAPublicKey key
        end local 1 // java.lang.Object o
        end local 0 // org.bouncycastle.jce.provider.JCERSAPublicKey this
      LocalVariableTable:
        Start  End  Slot  Name  Signature
            0    9     0  this  Lorg/bouncycastle/jce/provider/JCERSAPublicKey;
            0    9     1     o  Ljava/lang/Object;
            5    9     2   key  Ljava/security/interfaces/RSAPublicKey;
    MethodParameters:
      Name  Flags
      o     

  public java.lang.String toString();
    descriptor: ()Ljava/lang/String;
    flags: (0x0001) ACC_PUBLIC
    Code:
      stack=3, locals=3, args_size=1
        start local 0 // org.bouncycastle.jce.provider.JCERSAPublicKey this
         0: .line 123
            new java.lang.StringBuffer
            dup
            invokespecial java.lang.StringBuffer.<init>:()V
            astore 1 /* buf */
        start local 1 // java.lang.StringBuffer buf
         1: .line 124
            ldc "line.separator"
            invokestatic java.lang.System.getProperty:(Ljava/lang/String;)Ljava/lang/String;
            astore 2 /* nl */
        start local 2 // java.lang.String nl
         2: .line 126
            aload 1 /* buf */
            ldc "RSA Public Key"
            invokevirtual java.lang.StringBuffer.append:(Ljava/lang/String;)Ljava/lang/StringBuffer;
            aload 2 /* nl */
            invokevirtual java.lang.StringBuffer.append:(Ljava/lang/String;)Ljava/lang/StringBuffer;
            pop
         3: .line 127
            aload 1 /* buf */
            ldc "            modulus: "
            invokevirtual java.lang.StringBuffer.append:(Ljava/lang/String;)Ljava/lang/StringBuffer;
            aload 0 /* this */
            invokevirtual org.bouncycastle.jce.provider.JCERSAPublicKey.getModulus:()Ljava/math/BigInteger;
            bipush 16
            invokevirtual java.math.BigInteger.toString:(I)Ljava/lang/String;
            invokevirtual java.lang.StringBuffer.append:(Ljava/lang/String;)Ljava/lang/StringBuffer;
            aload 2 /* nl */
            invokevirtual java.lang.StringBuffer.append:(Ljava/lang/String;)Ljava/lang/StringBuffer;
            pop
         4: .line 128
            aload 1 /* buf */
            ldc "    public exponent: "
            invokevirtual java.lang.StringBuffer.append:(Ljava/lang/String;)Ljava/lang/StringBuffer;
            aload 0 /* this */
            invokevirtual org.bouncycastle.jce.provider.JCERSAPublicKey.getPublicExponent:()Ljava/math/BigInteger;
            bipush 16
            invokevirtual java.math.BigInteger.toString:(I)Ljava/lang/String;
            invokevirtual java.lang.StringBuffer.append:(Ljava/lang/String;)Ljava/lang/StringBuffer;
            aload 2 /* nl */
            invokevirtual java.lang.StringBuffer.append:(Ljava/lang/String;)Ljava/lang/StringBuffer;
            pop
         5: .line 130
            aload 1 /* buf */
            invokevirtual java.lang.StringBuffer.toString:()Ljava/lang/String;
            areturn
        end local 2 // java.lang.String nl
        end local 1 // java.lang.StringBuffer buf
        end local 0 // org.bouncycastle.jce.provider.JCERSAPublicKey this
      LocalVariableTable:
        Start  End  Slot  Name  Signature
            0    6     0  this  Lorg/bouncycastle/jce/provider/JCERSAPublicKey;
            1    6     1   buf  Ljava/lang/StringBuffer;
            2    6     2    nl  Ljava/lang/String;
}
SourceFile: "JCERSAPublicKey.java"