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.asymmetric.ec.KeyAgreement extends javax.crypto.KeyAgreementSpi
  minor version: 0
  major version: 59
  flags: flags: (0x0021) ACC_PUBLIC, ACC_SUPER
  this_class: org.bouncycastle.jce.provider.asymmetric.ec.KeyAgreement
  super_class: javax.crypto.KeyAgreementSpi
{
  private static final org.bouncycastle.asn1.x9.X9IntegerConverter converter;
    descriptor: Lorg/bouncycastle/asn1/x9/X9IntegerConverter;
    flags: (0x001a) ACC_PRIVATE, ACC_STATIC, ACC_FINAL

  private static final java.util.Hashtable algorithms;
    descriptor: Ljava/util/Hashtable;
    flags: (0x001a) ACC_PRIVATE, ACC_STATIC, ACC_FINAL

  private java.lang.String kaAlgorithm;
    descriptor: Ljava/lang/String;
    flags: (0x0002) ACC_PRIVATE

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

  private org.bouncycastle.crypto.params.ECDomainParameters parameters;
    descriptor: Lorg/bouncycastle/crypto/params/ECDomainParameters;
    flags: (0x0002) ACC_PRIVATE

  private org.bouncycastle.crypto.BasicAgreement agreement;
    descriptor: Lorg/bouncycastle/crypto/BasicAgreement;
    flags: (0x0002) ACC_PRIVATE

  private org.bouncycastle.crypto.DerivationFunction kdf;
    descriptor: Lorg/bouncycastle/crypto/DerivationFunction;
    flags: (0x0002) ACC_PRIVATE

  static void <clinit>();
    descriptor: ()V
    flags: (0x0008) ACC_STATIC
    Code:
      stack=3, locals=3, args_size=0
         0: .line 51
            new org.bouncycastle.asn1.x9.X9IntegerConverter
            dup
            invokespecial org.bouncycastle.asn1.x9.X9IntegerConverter.<init>:()V
            putstatic org.bouncycastle.jce.provider.asymmetric.ec.KeyAgreement.converter:Lorg/bouncycastle/asn1/x9/X9IntegerConverter;
         1: .line 52
            new java.util.Hashtable
            dup
            invokespecial java.util.Hashtable.<init>:()V
            putstatic org.bouncycastle.jce.provider.asymmetric.ec.KeyAgreement.algorithms:Ljava/util/Hashtable;
         2: .line 56
            new java.lang.Integer
            dup
            sipush 128
            invokespecial java.lang.Integer.<init>:(I)V
            astore 0 /* i128 */
        start local 0 // java.lang.Integer i128
         3: .line 57
            new java.lang.Integer
            dup
            sipush 192
            invokespecial java.lang.Integer.<init>:(I)V
            astore 1 /* i192 */
        start local 1 // java.lang.Integer i192
         4: .line 58
            new java.lang.Integer
            dup
            sipush 256
            invokespecial java.lang.Integer.<init>:(I)V
            astore 2 /* i256 */
        start local 2 // java.lang.Integer i256
         5: .line 60
            getstatic org.bouncycastle.jce.provider.asymmetric.ec.KeyAgreement.algorithms:Ljava/util/Hashtable;
            getstatic org.bouncycastle.asn1.nist.NISTObjectIdentifiers.id_aes128_CBC:Lorg/bouncycastle/asn1/ASN1ObjectIdentifier;
            invokevirtual org.bouncycastle.asn1.ASN1ObjectIdentifier.getId:()Ljava/lang/String;
            aload 0 /* i128 */
            invokevirtual java.util.Hashtable.put:(Ljava/lang/Object;Ljava/lang/Object;)Ljava/lang/Object;
            pop
         6: .line 61
            getstatic org.bouncycastle.jce.provider.asymmetric.ec.KeyAgreement.algorithms:Ljava/util/Hashtable;
            getstatic org.bouncycastle.asn1.nist.NISTObjectIdentifiers.id_aes192_CBC:Lorg/bouncycastle/asn1/ASN1ObjectIdentifier;
            invokevirtual org.bouncycastle.asn1.ASN1ObjectIdentifier.getId:()Ljava/lang/String;
            aload 1 /* i192 */
            invokevirtual java.util.Hashtable.put:(Ljava/lang/Object;Ljava/lang/Object;)Ljava/lang/Object;
            pop
         7: .line 62
            getstatic org.bouncycastle.jce.provider.asymmetric.ec.KeyAgreement.algorithms:Ljava/util/Hashtable;
            getstatic org.bouncycastle.asn1.nist.NISTObjectIdentifiers.id_aes256_CBC:Lorg/bouncycastle/asn1/ASN1ObjectIdentifier;
            invokevirtual org.bouncycastle.asn1.ASN1ObjectIdentifier.getId:()Ljava/lang/String;
            aload 2 /* i256 */
            invokevirtual java.util.Hashtable.put:(Ljava/lang/Object;Ljava/lang/Object;)Ljava/lang/Object;
            pop
         8: .line 63
            getstatic org.bouncycastle.jce.provider.asymmetric.ec.KeyAgreement.algorithms:Ljava/util/Hashtable;
            getstatic org.bouncycastle.asn1.nist.NISTObjectIdentifiers.id_aes128_wrap:Lorg/bouncycastle/asn1/ASN1ObjectIdentifier;
            invokevirtual org.bouncycastle.asn1.ASN1ObjectIdentifier.getId:()Ljava/lang/String;
            aload 0 /* i128 */
            invokevirtual java.util.Hashtable.put:(Ljava/lang/Object;Ljava/lang/Object;)Ljava/lang/Object;
            pop
         9: .line 64
            getstatic org.bouncycastle.jce.provider.asymmetric.ec.KeyAgreement.algorithms:Ljava/util/Hashtable;
            getstatic org.bouncycastle.asn1.nist.NISTObjectIdentifiers.id_aes192_wrap:Lorg/bouncycastle/asn1/ASN1ObjectIdentifier;
            invokevirtual org.bouncycastle.asn1.ASN1ObjectIdentifier.getId:()Ljava/lang/String;
            aload 1 /* i192 */
            invokevirtual java.util.Hashtable.put:(Ljava/lang/Object;Ljava/lang/Object;)Ljava/lang/Object;
            pop
        10: .line 65
            getstatic org.bouncycastle.jce.provider.asymmetric.ec.KeyAgreement.algorithms:Ljava/util/Hashtable;
            getstatic org.bouncycastle.asn1.nist.NISTObjectIdentifiers.id_aes256_wrap:Lorg/bouncycastle/asn1/ASN1ObjectIdentifier;
            invokevirtual org.bouncycastle.asn1.ASN1ObjectIdentifier.getId:()Ljava/lang/String;
            aload 2 /* i256 */
            invokevirtual java.util.Hashtable.put:(Ljava/lang/Object;Ljava/lang/Object;)Ljava/lang/Object;
            pop
        11: .line 66
            getstatic org.bouncycastle.jce.provider.asymmetric.ec.KeyAgreement.algorithms:Ljava/util/Hashtable;
            getstatic org.bouncycastle.asn1.pkcs.PKCSObjectIdentifiers.id_alg_CMS3DESwrap:Lorg/bouncycastle/asn1/ASN1ObjectIdentifier;
            invokevirtual org.bouncycastle.asn1.ASN1ObjectIdentifier.getId:()Ljava/lang/String;
            aload 1 /* i192 */
            invokevirtual java.util.Hashtable.put:(Ljava/lang/Object;Ljava/lang/Object;)Ljava/lang/Object;
            pop
        end local 2 // java.lang.Integer i256
        end local 1 // java.lang.Integer i192
        end local 0 // java.lang.Integer i128
        12: .line 67
            return
      LocalVariableTable:
        Start  End  Slot  Name  Signature
            3   12     0  i128  Ljava/lang/Integer;
            4   12     1  i192  Ljava/lang/Integer;
            5   12     2  i256  Ljava/lang/Integer;

  private byte[] bigIntToBytes(java.math.BigInteger);
    descriptor: (Ljava/math/BigInteger;)[B
    flags: (0x0002) ACC_PRIVATE
    Code:
      stack=4, locals=2, args_size=2
        start local 0 // org.bouncycastle.jce.provider.asymmetric.ec.KeyAgreement this
        start local 1 // java.math.BigInteger r
         0: .line 78
            getstatic org.bouncycastle.jce.provider.asymmetric.ec.KeyAgreement.converter:Lorg/bouncycastle/asn1/x9/X9IntegerConverter;
            aload 1 /* r */
            getstatic org.bouncycastle.jce.provider.asymmetric.ec.KeyAgreement.converter:Lorg/bouncycastle/asn1/x9/X9IntegerConverter;
            aload 0 /* this */
            getfield org.bouncycastle.jce.provider.asymmetric.ec.KeyAgreement.parameters:Lorg/bouncycastle/crypto/params/ECDomainParameters;
            invokevirtual org.bouncycastle.crypto.params.ECDomainParameters.getG:()Lorg/bouncycastle/math/ec/ECPoint;
            invokevirtual org.bouncycastle.math.ec.ECPoint.getX:()Lorg/bouncycastle/math/ec/ECFieldElement;
            invokevirtual org.bouncycastle.asn1.x9.X9IntegerConverter.getByteLength:(Lorg/bouncycastle/math/ec/ECFieldElement;)I
            invokevirtual org.bouncycastle.asn1.x9.X9IntegerConverter.integerToBytes:(Ljava/math/BigInteger;I)[B
            areturn
        end local 1 // java.math.BigInteger r
        end local 0 // org.bouncycastle.jce.provider.asymmetric.ec.KeyAgreement this
      LocalVariableTable:
        Start  End  Slot  Name  Signature
            0    1     0  this  Lorg/bouncycastle/jce/provider/asymmetric/ec/KeyAgreement;
            0    1     1     r  Ljava/math/BigInteger;
    MethodParameters:
      Name  Flags
      r     

  protected void <init>(java.lang.String, org.bouncycastle.crypto.BasicAgreement, org.bouncycastle.crypto.DerivationFunction);
    descriptor: (Ljava/lang/String;Lorg/bouncycastle/crypto/BasicAgreement;Lorg/bouncycastle/crypto/DerivationFunction;)V
    flags: (0x0004) ACC_PROTECTED
    Code:
      stack=2, locals=4, args_size=4
        start local 0 // org.bouncycastle.jce.provider.asymmetric.ec.KeyAgreement this
        start local 1 // java.lang.String kaAlgorithm
        start local 2 // org.bouncycastle.crypto.BasicAgreement agreement
        start local 3 // org.bouncycastle.crypto.DerivationFunction kdf
         0: .line 81
            aload 0 /* this */
            invokespecial javax.crypto.KeyAgreementSpi.<init>:()V
         1: .line 86
            aload 0 /* this */
            aload 1 /* kaAlgorithm */
            putfield org.bouncycastle.jce.provider.asymmetric.ec.KeyAgreement.kaAlgorithm:Ljava/lang/String;
         2: .line 87
            aload 0 /* this */
            aload 2 /* agreement */
            putfield org.bouncycastle.jce.provider.asymmetric.ec.KeyAgreement.agreement:Lorg/bouncycastle/crypto/BasicAgreement;
         3: .line 88
            aload 0 /* this */
            aload 3 /* kdf */
            putfield org.bouncycastle.jce.provider.asymmetric.ec.KeyAgreement.kdf:Lorg/bouncycastle/crypto/DerivationFunction;
         4: .line 89
            return
        end local 3 // org.bouncycastle.crypto.DerivationFunction kdf
        end local 2 // org.bouncycastle.crypto.BasicAgreement agreement
        end local 1 // java.lang.String kaAlgorithm
        end local 0 // org.bouncycastle.jce.provider.asymmetric.ec.KeyAgreement this
      LocalVariableTable:
        Start  End  Slot         Name  Signature
            0    5     0         this  Lorg/bouncycastle/jce/provider/asymmetric/ec/KeyAgreement;
            0    5     1  kaAlgorithm  Ljava/lang/String;
            0    5     2    agreement  Lorg/bouncycastle/crypto/BasicAgreement;
            0    5     3          kdf  Lorg/bouncycastle/crypto/DerivationFunction;
    MethodParameters:
             Name  Flags
      kaAlgorithm  
      agreement    
      kdf          

  protected java.security.Key engineDoPhase(java.security.Key, boolean);
    descriptor: (Ljava/security/Key;Z)Ljava/security/Key;
    flags: (0x0004) ACC_PROTECTED
    Code:
      stack=5, locals=7, args_size=3
        start local 0 // org.bouncycastle.jce.provider.asymmetric.ec.KeyAgreement this
        start local 1 // java.security.Key key
        start local 2 // boolean lastPhase
         0: .line 96
            aload 0 /* this */
            getfield org.bouncycastle.jce.provider.asymmetric.ec.KeyAgreement.parameters:Lorg/bouncycastle/crypto/params/ECDomainParameters;
            ifnonnull 2
         1: .line 98
            new java.lang.IllegalStateException
            dup
            new java.lang.StringBuilder
            dup
            aload 0 /* this */
            getfield org.bouncycastle.jce.provider.asymmetric.ec.KeyAgreement.kaAlgorithm:Ljava/lang/String;
            invokestatic java.lang.String.valueOf:(Ljava/lang/Object;)Ljava/lang/String;
            invokespecial java.lang.StringBuilder.<init>:(Ljava/lang/String;)V
            ldc " not initialised."
            invokevirtual java.lang.StringBuilder.append:(Ljava/lang/String;)Ljava/lang/StringBuilder;
            invokevirtual java.lang.StringBuilder.toString:()Ljava/lang/String;
            invokespecial java.lang.IllegalStateException.<init>:(Ljava/lang/String;)V
            athrow
         2: .line 101
      StackMap locals:
      StackMap stack:
            iload 2 /* lastPhase */
            ifne 4
         3: .line 103
            new java.lang.IllegalStateException
            dup
            new java.lang.StringBuilder
            dup
            aload 0 /* this */
            getfield org.bouncycastle.jce.provider.asymmetric.ec.KeyAgreement.kaAlgorithm:Ljava/lang/String;
            invokestatic java.lang.String.valueOf:(Ljava/lang/Object;)Ljava/lang/String;
            invokespecial java.lang.StringBuilder.<init>:(Ljava/lang/String;)V
            ldc " can only be between two parties."
            invokevirtual java.lang.StringBuilder.append:(Ljava/lang/String;)Ljava/lang/StringBuilder;
            invokevirtual java.lang.StringBuilder.toString:()Ljava/lang/String;
            invokespecial java.lang.IllegalStateException.<init>:(Ljava/lang/String;)V
            athrow
         4: .line 107
      StackMap locals:
      StackMap stack:
            aload 0 /* this */
            getfield org.bouncycastle.jce.provider.asymmetric.ec.KeyAgreement.agreement:Lorg/bouncycastle/crypto/BasicAgreement;
            instanceof org.bouncycastle.crypto.agreement.ECMQVBasicAgreement
            ifeq 16
         5: .line 109
            aload 1 /* key */
            instanceof org.bouncycastle.jce.interfaces.MQVPublicKey
            ifne 9
         6: .line 111
            new java.security.InvalidKeyException
            dup
            new java.lang.StringBuilder
            dup
            aload 0 /* this */
            getfield org.bouncycastle.jce.provider.asymmetric.ec.KeyAgreement.kaAlgorithm:Ljava/lang/String;
            invokestatic java.lang.String.valueOf:(Ljava/lang/Object;)Ljava/lang/String;
            invokespecial java.lang.StringBuilder.<init>:(Ljava/lang/String;)V
            ldc " key agreement requires "
            invokevirtual java.lang.StringBuilder.append:(Ljava/lang/String;)Ljava/lang/StringBuilder;
         7: .line 112
            ldc Lorg/bouncycastle/jce/interfaces/MQVPublicKey;
            invokestatic org.bouncycastle.jce.provider.asymmetric.ec.KeyAgreement.getSimpleName:(Ljava/lang/Class;)Ljava/lang/String;
            invokevirtual java.lang.StringBuilder.append:(Ljava/lang/String;)Ljava/lang/StringBuilder;
            ldc " for doPhase"
            invokevirtual java.lang.StringBuilder.append:(Ljava/lang/String;)Ljava/lang/StringBuilder;
            invokevirtual java.lang.StringBuilder.toString:()Ljava/lang/String;
         8: .line 111
            invokespecial java.security.InvalidKeyException.<init>:(Ljava/lang/String;)V
            athrow
         9: .line 115
      StackMap locals:
      StackMap stack:
            aload 1 /* key */
            checkcast org.bouncycastle.jce.interfaces.MQVPublicKey
            astore 4 /* mqvPubKey */
        start local 4 // org.bouncycastle.jce.interfaces.MQVPublicKey mqvPubKey
        10: .line 117
            aload 4 /* mqvPubKey */
            invokeinterface org.bouncycastle.jce.interfaces.MQVPublicKey.getStaticKey:()Ljava/security/PublicKey;
            invokestatic org.bouncycastle.jce.provider.asymmetric.ec.ECUtil.generatePublicKeyParameter:(Ljava/security/PublicKey;)Lorg/bouncycastle/crypto/params/AsymmetricKeyParameter;
        11: .line 116
            checkcast org.bouncycastle.crypto.params.ECPublicKeyParameters
            astore 5 /* staticKey */
        start local 5 // org.bouncycastle.crypto.params.ECPublicKeyParameters staticKey
        12: .line 119
            aload 4 /* mqvPubKey */
            invokeinterface org.bouncycastle.jce.interfaces.MQVPublicKey.getEphemeralKey:()Ljava/security/PublicKey;
            invokestatic org.bouncycastle.jce.provider.asymmetric.ec.ECUtil.generatePublicKeyParameter:(Ljava/security/PublicKey;)Lorg/bouncycastle/crypto/params/AsymmetricKeyParameter;
        13: .line 118
            checkcast org.bouncycastle.crypto.params.ECPublicKeyParameters
            astore 6 /* ephemKey */
        start local 6 // org.bouncycastle.crypto.params.ECPublicKeyParameters ephemKey
        14: .line 121
            new org.bouncycastle.crypto.params.MQVPublicParameters
            dup
            aload 5 /* staticKey */
            aload 6 /* ephemKey */
            invokespecial org.bouncycastle.crypto.params.MQVPublicParameters.<init>:(Lorg/bouncycastle/crypto/params/ECPublicKeyParameters;Lorg/bouncycastle/crypto/params/ECPublicKeyParameters;)V
            astore 3 /* pubKey */
        end local 6 // org.bouncycastle.crypto.params.ECPublicKeyParameters ephemKey
        end local 5 // org.bouncycastle.crypto.params.ECPublicKeyParameters staticKey
        end local 4 // org.bouncycastle.jce.interfaces.MQVPublicKey mqvPubKey
        start local 3 // org.bouncycastle.crypto.CipherParameters pubKey
        15: .line 124
            goto 21
        end local 3 // org.bouncycastle.crypto.CipherParameters pubKey
        16: .line 127
      StackMap locals:
      StackMap stack:
            aload 1 /* key */
            instanceof org.bouncycastle.jce.interfaces.ECPublicKey
            ifne 20
        17: .line 129
            new java.security.InvalidKeyException
            dup
            new java.lang.StringBuilder
            dup
            aload 0 /* this */
            getfield org.bouncycastle.jce.provider.asymmetric.ec.KeyAgreement.kaAlgorithm:Ljava/lang/String;
            invokestatic java.lang.String.valueOf:(Ljava/lang/Object;)Ljava/lang/String;
            invokespecial java.lang.StringBuilder.<init>:(Ljava/lang/String;)V
            ldc " key agreement requires "
            invokevirtual java.lang.StringBuilder.append:(Ljava/lang/String;)Ljava/lang/StringBuilder;
        18: .line 130
            ldc Lorg/bouncycastle/jce/interfaces/ECPublicKey;
            invokestatic org.bouncycastle.jce.provider.asymmetric.ec.KeyAgreement.getSimpleName:(Ljava/lang/Class;)Ljava/lang/String;
            invokevirtual java.lang.StringBuilder.append:(Ljava/lang/String;)Ljava/lang/StringBuilder;
            ldc " for doPhase"
            invokevirtual java.lang.StringBuilder.append:(Ljava/lang/String;)Ljava/lang/StringBuilder;
            invokevirtual java.lang.StringBuilder.toString:()Ljava/lang/String;
        19: .line 129
            invokespecial java.security.InvalidKeyException.<init>:(Ljava/lang/String;)V
            athrow
        20: .line 133
      StackMap locals:
      StackMap stack:
            aload 1 /* key */
            checkcast java.security.PublicKey
            invokestatic org.bouncycastle.jce.provider.asymmetric.ec.ECUtil.generatePublicKeyParameter:(Ljava/security/PublicKey;)Lorg/bouncycastle/crypto/params/AsymmetricKeyParameter;
            astore 3 /* pubKey */
        start local 3 // org.bouncycastle.crypto.CipherParameters pubKey
        21: .line 138
      StackMap locals: org.bouncycastle.crypto.CipherParameters
      StackMap stack:
            aload 0 /* this */
            aload 0 /* this */
            getfield org.bouncycastle.jce.provider.asymmetric.ec.KeyAgreement.agreement:Lorg/bouncycastle/crypto/BasicAgreement;
            aload 3 /* pubKey */
            invokeinterface org.bouncycastle.crypto.BasicAgreement.calculateAgreement:(Lorg/bouncycastle/crypto/CipherParameters;)Ljava/math/BigInteger;
            putfield org.bouncycastle.jce.provider.asymmetric.ec.KeyAgreement.result:Ljava/math/BigInteger;
        22: .line 140
            aconst_null
            areturn
        end local 3 // org.bouncycastle.crypto.CipherParameters pubKey
        end local 2 // boolean lastPhase
        end local 1 // java.security.Key key
        end local 0 // org.bouncycastle.jce.provider.asymmetric.ec.KeyAgreement this
      LocalVariableTable:
        Start  End  Slot       Name  Signature
            0   23     0       this  Lorg/bouncycastle/jce/provider/asymmetric/ec/KeyAgreement;
            0   23     1        key  Ljava/security/Key;
            0   23     2  lastPhase  Z
           15   16     3     pubKey  Lorg/bouncycastle/crypto/CipherParameters;
           21   23     3     pubKey  Lorg/bouncycastle/crypto/CipherParameters;
           10   15     4  mqvPubKey  Lorg/bouncycastle/jce/interfaces/MQVPublicKey;
           12   15     5  staticKey  Lorg/bouncycastle/crypto/params/ECPublicKeyParameters;
           14   15     6   ephemKey  Lorg/bouncycastle/crypto/params/ECPublicKeyParameters;
    Exceptions:
      throws java.security.InvalidKeyException, java.lang.IllegalStateException
    MethodParameters:
           Name  Flags
      key        
      lastPhase  

  protected byte[] engineGenerateSecret();
    descriptor: ()[B
    flags: (0x0004) ACC_PROTECTED
    Code:
      stack=3, locals=1, args_size=1
        start local 0 // org.bouncycastle.jce.provider.asymmetric.ec.KeyAgreement this
         0: .line 146
            aload 0 /* this */
            getfield org.bouncycastle.jce.provider.asymmetric.ec.KeyAgreement.kdf:Lorg/bouncycastle/crypto/DerivationFunction;
            ifnull 4
         1: .line 148
            new java.lang.UnsupportedOperationException
            dup
         2: .line 149
            ldc "KDF can only be used when algorithm is known"
         3: .line 148
            invokespecial java.lang.UnsupportedOperationException.<init>:(Ljava/lang/String;)V
            athrow
         4: .line 152
      StackMap locals:
      StackMap stack:
            aload 0 /* this */
            aload 0 /* this */
            getfield org.bouncycastle.jce.provider.asymmetric.ec.KeyAgreement.result:Ljava/math/BigInteger;
            invokevirtual org.bouncycastle.jce.provider.asymmetric.ec.KeyAgreement.bigIntToBytes:(Ljava/math/BigInteger;)[B
            areturn
        end local 0 // org.bouncycastle.jce.provider.asymmetric.ec.KeyAgreement this
      LocalVariableTable:
        Start  End  Slot  Name  Signature
            0    5     0  this  Lorg/bouncycastle/jce/provider/asymmetric/ec/KeyAgreement;
    Exceptions:
      throws java.lang.IllegalStateException

  protected int engineGenerateSecret(byte[], int);
    descriptor: ([BI)I
    flags: (0x0004) ACC_PROTECTED
    Code:
      stack=5, locals=4, args_size=3
        start local 0 // org.bouncycastle.jce.provider.asymmetric.ec.KeyAgreement this
        start local 1 // byte[] sharedSecret
        start local 2 // int offset
         0: .line 160
            aload 0 /* this */
            invokevirtual org.bouncycastle.jce.provider.asymmetric.ec.KeyAgreement.engineGenerateSecret:()[B
            astore 3 /* secret */
        start local 3 // byte[] secret
         1: .line 162
            aload 1 /* sharedSecret */
            arraylength
            iload 2 /* offset */
            isub
            aload 3 /* secret */
            arraylength
            if_icmpge 3
         2: .line 164
            new javax.crypto.ShortBufferException
            dup
            new java.lang.StringBuilder
            dup
            aload 0 /* this */
            getfield org.bouncycastle.jce.provider.asymmetric.ec.KeyAgreement.kaAlgorithm:Ljava/lang/String;
            invokestatic java.lang.String.valueOf:(Ljava/lang/Object;)Ljava/lang/String;
            invokespecial java.lang.StringBuilder.<init>:(Ljava/lang/String;)V
            ldc " key agreement: need "
            invokevirtual java.lang.StringBuilder.append:(Ljava/lang/String;)Ljava/lang/StringBuilder;
            aload 3 /* secret */
            arraylength
            invokevirtual java.lang.StringBuilder.append:(I)Ljava/lang/StringBuilder;
            ldc " bytes"
            invokevirtual java.lang.StringBuilder.append:(Ljava/lang/String;)Ljava/lang/StringBuilder;
            invokevirtual java.lang.StringBuilder.toString:()Ljava/lang/String;
            invokespecial javax.crypto.ShortBufferException.<init>:(Ljava/lang/String;)V
            athrow
         3: .line 167
      StackMap locals: byte[]
      StackMap stack:
            aload 3 /* secret */
            iconst_0
            aload 1 /* sharedSecret */
            iload 2 /* offset */
            aload 3 /* secret */
            arraylength
            invokestatic java.lang.System.arraycopy:(Ljava/lang/Object;ILjava/lang/Object;II)V
         4: .line 169
            aload 3 /* secret */
            arraylength
            ireturn
        end local 3 // byte[] secret
        end local 2 // int offset
        end local 1 // byte[] sharedSecret
        end local 0 // org.bouncycastle.jce.provider.asymmetric.ec.KeyAgreement this
      LocalVariableTable:
        Start  End  Slot          Name  Signature
            0    5     0          this  Lorg/bouncycastle/jce/provider/asymmetric/ec/KeyAgreement;
            0    5     1  sharedSecret  [B
            0    5     2        offset  I
            1    5     3        secret  [B
    Exceptions:
      throws java.lang.IllegalStateException, javax.crypto.ShortBufferException
    MethodParameters:
              Name  Flags
      sharedSecret  
      offset        

  protected javax.crypto.SecretKey engineGenerateSecret(java.lang.String);
    descriptor: (Ljava/lang/String;)Ljavax/crypto/SecretKey;
    flags: (0x0004) ACC_PROTECTED
    Code:
      stack=5, locals=6, args_size=2
        start local 0 // org.bouncycastle.jce.provider.asymmetric.ec.KeyAgreement this
        start local 1 // java.lang.String algorithm
         0: .line 176
            aload 0 /* this */
            aload 0 /* this */
            getfield org.bouncycastle.jce.provider.asymmetric.ec.KeyAgreement.result:Ljava/math/BigInteger;
            invokevirtual org.bouncycastle.jce.provider.asymmetric.ec.KeyAgreement.bigIntToBytes:(Ljava/math/BigInteger;)[B
            astore 2 /* secret */
        start local 2 // byte[] secret
         1: .line 178
            aload 0 /* this */
            getfield org.bouncycastle.jce.provider.asymmetric.ec.KeyAgreement.kdf:Lorg/bouncycastle/crypto/DerivationFunction;
            ifnull 10
         2: .line 180
            getstatic org.bouncycastle.jce.provider.asymmetric.ec.KeyAgreement.algorithms:Ljava/util/Hashtable;
            aload 1 /* algorithm */
            invokevirtual java.util.Hashtable.containsKey:(Ljava/lang/Object;)Z
            ifne 4
         3: .line 182
            new java.security.NoSuchAlgorithmException
            dup
            new java.lang.StringBuilder
            dup
            ldc "unknown algorithm encountered: "
            invokespecial java.lang.StringBuilder.<init>:(Ljava/lang/String;)V
            aload 1 /* algorithm */
            invokevirtual java.lang.StringBuilder.append:(Ljava/lang/String;)Ljava/lang/StringBuilder;
            invokevirtual java.lang.StringBuilder.toString:()Ljava/lang/String;
            invokespecial java.security.NoSuchAlgorithmException.<init>:(Ljava/lang/String;)V
            athrow
         4: .line 185
      StackMap locals: byte[]
      StackMap stack:
            getstatic org.bouncycastle.jce.provider.asymmetric.ec.KeyAgreement.algorithms:Ljava/util/Hashtable;
            aload 1 /* algorithm */
            invokevirtual java.util.Hashtable.get:(Ljava/lang/Object;)Ljava/lang/Object;
            checkcast java.lang.Integer
            invokevirtual java.lang.Integer.intValue:()I
            istore 3 /* keySize */
        start local 3 // int keySize
         5: .line 187
            new org.bouncycastle.crypto.agreement.kdf.DHKDFParameters
            dup
            new org.bouncycastle.asn1.DERObjectIdentifier
            dup
            aload 1 /* algorithm */
            invokespecial org.bouncycastle.asn1.DERObjectIdentifier.<init>:(Ljava/lang/String;)V
            iload 3 /* keySize */
            aload 2 /* secret */
            invokespecial org.bouncycastle.crypto.agreement.kdf.DHKDFParameters.<init>:(Lorg/bouncycastle/asn1/DERObjectIdentifier;I[B)V
            astore 4 /* params */
        start local 4 // org.bouncycastle.crypto.agreement.kdf.DHKDFParameters params
         6: .line 189
            iload 3 /* keySize */
            bipush 8
            idiv
            newarray 8
            astore 5 /* keyBytes */
        start local 5 // byte[] keyBytes
         7: .line 190
            aload 0 /* this */
            getfield org.bouncycastle.jce.provider.asymmetric.ec.KeyAgreement.kdf:Lorg/bouncycastle/crypto/DerivationFunction;
            aload 4 /* params */
            invokeinterface org.bouncycastle.crypto.DerivationFunction.init:(Lorg/bouncycastle/crypto/DerivationParameters;)V
         8: .line 191
            aload 0 /* this */
            getfield org.bouncycastle.jce.provider.asymmetric.ec.KeyAgreement.kdf:Lorg/bouncycastle/crypto/DerivationFunction;
            aload 5 /* keyBytes */
            iconst_0
            aload 5 /* keyBytes */
            arraylength
            invokeinterface org.bouncycastle.crypto.DerivationFunction.generateBytes:([BII)I
            pop
         9: .line 192
            aload 5 /* keyBytes */
            astore 2 /* secret */
        end local 5 // byte[] keyBytes
        end local 4 // org.bouncycastle.crypto.agreement.kdf.DHKDFParameters params
        end local 3 // int keySize
        10: .line 199
      StackMap locals:
      StackMap stack:
            new javax.crypto.spec.SecretKeySpec
            dup
            aload 2 /* secret */
            aload 1 /* algorithm */
            invokespecial javax.crypto.spec.SecretKeySpec.<init>:([BLjava/lang/String;)V
            areturn
        end local 2 // byte[] secret
        end local 1 // java.lang.String algorithm
        end local 0 // org.bouncycastle.jce.provider.asymmetric.ec.KeyAgreement this
      LocalVariableTable:
        Start  End  Slot       Name  Signature
            0   11     0       this  Lorg/bouncycastle/jce/provider/asymmetric/ec/KeyAgreement;
            0   11     1  algorithm  Ljava/lang/String;
            1   11     2     secret  [B
            5   10     3    keySize  I
            6   10     4     params  Lorg/bouncycastle/crypto/agreement/kdf/DHKDFParameters;
            7   10     5   keyBytes  [B
    Exceptions:
      throws java.security.NoSuchAlgorithmException
    MethodParameters:
           Name  Flags
      algorithm  

  protected void engineInit(java.security.Key, java.security.spec.AlgorithmParameterSpec, java.security.SecureRandom);
    descriptor: (Ljava/security/Key;Ljava/security/spec/AlgorithmParameterSpec;Ljava/security/SecureRandom;)V
    flags: (0x0004) ACC_PROTECTED
    Code:
      stack=2, locals=4, args_size=4
        start local 0 // org.bouncycastle.jce.provider.asymmetric.ec.KeyAgreement this
        start local 1 // java.security.Key key
        start local 2 // java.security.spec.AlgorithmParameterSpec params
        start local 3 // java.security.SecureRandom random
         0: .line 208
            aload 0 /* this */
            aload 1 /* key */
            invokevirtual org.bouncycastle.jce.provider.asymmetric.ec.KeyAgreement.initFromKey:(Ljava/security/Key;)V
         1: .line 209
            return
        end local 3 // java.security.SecureRandom random
        end local 2 // java.security.spec.AlgorithmParameterSpec params
        end local 1 // java.security.Key key
        end local 0 // org.bouncycastle.jce.provider.asymmetric.ec.KeyAgreement this
      LocalVariableTable:
        Start  End  Slot    Name  Signature
            0    2     0    this  Lorg/bouncycastle/jce/provider/asymmetric/ec/KeyAgreement;
            0    2     1     key  Ljava/security/Key;
            0    2     2  params  Ljava/security/spec/AlgorithmParameterSpec;
            0    2     3  random  Ljava/security/SecureRandom;
    Exceptions:
      throws java.security.InvalidKeyException, java.security.InvalidAlgorithmParameterException
    MethodParameters:
        Name  Flags
      key     
      params  
      random  

  protected void engineInit(java.security.Key, java.security.SecureRandom);
    descriptor: (Ljava/security/Key;Ljava/security/SecureRandom;)V
    flags: (0x0004) ACC_PROTECTED
    Code:
      stack=2, locals=3, args_size=3
        start local 0 // org.bouncycastle.jce.provider.asymmetric.ec.KeyAgreement this
        start local 1 // java.security.Key key
        start local 2 // java.security.SecureRandom random
         0: .line 216
            aload 0 /* this */
            aload 1 /* key */
            invokevirtual org.bouncycastle.jce.provider.asymmetric.ec.KeyAgreement.initFromKey:(Ljava/security/Key;)V
         1: .line 217
            return
        end local 2 // java.security.SecureRandom random
        end local 1 // java.security.Key key
        end local 0 // org.bouncycastle.jce.provider.asymmetric.ec.KeyAgreement this
      LocalVariableTable:
        Start  End  Slot    Name  Signature
            0    2     0    this  Lorg/bouncycastle/jce/provider/asymmetric/ec/KeyAgreement;
            0    2     1     key  Ljava/security/Key;
            0    2     2  random  Ljava/security/SecureRandom;
    Exceptions:
      throws java.security.InvalidKeyException
    MethodParameters:
        Name  Flags
      key     
      random  

  private void initFromKey(java.security.Key);
    descriptor: (Ljava/security/Key;)V
    flags: (0x0002) ACC_PRIVATE
    Code:
      stack=5, locals=7, args_size=2
        start local 0 // org.bouncycastle.jce.provider.asymmetric.ec.KeyAgreement this
        start local 1 // java.security.Key key
         0: .line 222
            aload 0 /* this */
            getfield org.bouncycastle.jce.provider.asymmetric.ec.KeyAgreement.agreement:Lorg/bouncycastle/crypto/BasicAgreement;
            instanceof org.bouncycastle.crypto.agreement.ECMQVBasicAgreement
            ifeq 18
         1: .line 224
            aload 1 /* key */
            instanceof org.bouncycastle.jce.interfaces.MQVPrivateKey
            ifne 5
         2: .line 226
            new java.security.InvalidKeyException
            dup
            new java.lang.StringBuilder
            dup
            aload 0 /* this */
            getfield org.bouncycastle.jce.provider.asymmetric.ec.KeyAgreement.kaAlgorithm:Ljava/lang/String;
            invokestatic java.lang.String.valueOf:(Ljava/lang/Object;)Ljava/lang/String;
            invokespecial java.lang.StringBuilder.<init>:(Ljava/lang/String;)V
            ldc " key agreement requires "
            invokevirtual java.lang.StringBuilder.append:(Ljava/lang/String;)Ljava/lang/StringBuilder;
         3: .line 227
            ldc Lorg/bouncycastle/jce/interfaces/MQVPrivateKey;
            invokestatic org.bouncycastle.jce.provider.asymmetric.ec.KeyAgreement.getSimpleName:(Ljava/lang/Class;)Ljava/lang/String;
            invokevirtual java.lang.StringBuilder.append:(Ljava/lang/String;)Ljava/lang/StringBuilder;
            ldc " for initialisation"
            invokevirtual java.lang.StringBuilder.append:(Ljava/lang/String;)Ljava/lang/StringBuilder;
            invokevirtual java.lang.StringBuilder.toString:()Ljava/lang/String;
         4: .line 226
            invokespecial java.security.InvalidKeyException.<init>:(Ljava/lang/String;)V
            athrow
         5: .line 230
      StackMap locals:
      StackMap stack:
            aload 1 /* key */
            checkcast org.bouncycastle.jce.interfaces.MQVPrivateKey
            astore 2 /* mqvPrivKey */
        start local 2 // org.bouncycastle.jce.interfaces.MQVPrivateKey mqvPrivKey
         6: .line 232
            aload 2 /* mqvPrivKey */
            invokeinterface org.bouncycastle.jce.interfaces.MQVPrivateKey.getStaticPrivateKey:()Ljava/security/PrivateKey;
            invokestatic org.bouncycastle.jce.provider.asymmetric.ec.ECUtil.generatePrivateKeyParameter:(Ljava/security/PrivateKey;)Lorg/bouncycastle/crypto/params/AsymmetricKeyParameter;
         7: .line 231
            checkcast org.bouncycastle.crypto.params.ECPrivateKeyParameters
            astore 3 /* staticPrivKey */
        start local 3 // org.bouncycastle.crypto.params.ECPrivateKeyParameters staticPrivKey
         8: .line 234
            aload 2 /* mqvPrivKey */
            invokeinterface org.bouncycastle.jce.interfaces.MQVPrivateKey.getEphemeralPrivateKey:()Ljava/security/PrivateKey;
            invokestatic org.bouncycastle.jce.provider.asymmetric.ec.ECUtil.generatePrivateKeyParameter:(Ljava/security/PrivateKey;)Lorg/bouncycastle/crypto/params/AsymmetricKeyParameter;
         9: .line 233
            checkcast org.bouncycastle.crypto.params.ECPrivateKeyParameters
            astore 4 /* ephemPrivKey */
        start local 4 // org.bouncycastle.crypto.params.ECPrivateKeyParameters ephemPrivKey
        10: .line 236
            aconst_null
            astore 5 /* ephemPubKey */
        start local 5 // org.bouncycastle.crypto.params.ECPublicKeyParameters ephemPubKey
        11: .line 237
            aload 2 /* mqvPrivKey */
            invokeinterface org.bouncycastle.jce.interfaces.MQVPrivateKey.getEphemeralPublicKey:()Ljava/security/PublicKey;
            ifnull 14
        12: .line 240
            aload 2 /* mqvPrivKey */
            invokeinterface org.bouncycastle.jce.interfaces.MQVPrivateKey.getEphemeralPublicKey:()Ljava/security/PublicKey;
            invokestatic org.bouncycastle.jce.provider.asymmetric.ec.ECUtil.generatePublicKeyParameter:(Ljava/security/PublicKey;)Lorg/bouncycastle/crypto/params/AsymmetricKeyParameter;
        13: .line 239
            checkcast org.bouncycastle.crypto.params.ECPublicKeyParameters
            astore 5 /* ephemPubKey */
        14: .line 243
      StackMap locals: org.bouncycastle.jce.provider.asymmetric.ec.KeyAgreement java.security.Key org.bouncycastle.jce.interfaces.MQVPrivateKey org.bouncycastle.crypto.params.ECPrivateKeyParameters org.bouncycastle.crypto.params.ECPrivateKeyParameters org.bouncycastle.crypto.params.ECPublicKeyParameters
      StackMap stack:
            new org.bouncycastle.crypto.params.MQVPrivateParameters
            dup
            aload 3 /* staticPrivKey */
            aload 4 /* ephemPrivKey */
            aload 5 /* ephemPubKey */
            invokespecial org.bouncycastle.crypto.params.MQVPrivateParameters.<init>:(Lorg/bouncycastle/crypto/params/ECPrivateKeyParameters;Lorg/bouncycastle/crypto/params/ECPrivateKeyParameters;Lorg/bouncycastle/crypto/params/ECPublicKeyParameters;)V
            astore 6 /* localParams */
        start local 6 // org.bouncycastle.crypto.params.MQVPrivateParameters localParams
        15: .line 244
            aload 0 /* this */
            aload 3 /* staticPrivKey */
            invokevirtual org.bouncycastle.crypto.params.ECPrivateKeyParameters.getParameters:()Lorg/bouncycastle/crypto/params/ECDomainParameters;
            putfield org.bouncycastle.jce.provider.asymmetric.ec.KeyAgreement.parameters:Lorg/bouncycastle/crypto/params/ECDomainParameters;
        16: .line 248
            aload 0 /* this */
            getfield org.bouncycastle.jce.provider.asymmetric.ec.KeyAgreement.agreement:Lorg/bouncycastle/crypto/BasicAgreement;
            aload 6 /* localParams */
            invokeinterface org.bouncycastle.crypto.BasicAgreement.init:(Lorg/bouncycastle/crypto/CipherParameters;)V
        end local 6 // org.bouncycastle.crypto.params.MQVPrivateParameters localParams
        end local 5 // org.bouncycastle.crypto.params.ECPublicKeyParameters ephemPubKey
        end local 4 // org.bouncycastle.crypto.params.ECPrivateKeyParameters ephemPrivKey
        end local 3 // org.bouncycastle.crypto.params.ECPrivateKeyParameters staticPrivKey
        end local 2 // org.bouncycastle.jce.interfaces.MQVPrivateKey mqvPrivKey
        17: .line 249
            goto 25
        18: .line 252
      StackMap locals: org.bouncycastle.jce.provider.asymmetric.ec.KeyAgreement java.security.Key
      StackMap stack:
            aload 1 /* key */
            instanceof org.bouncycastle.jce.interfaces.ECPrivateKey
            ifne 22
        19: .line 254
            new java.security.InvalidKeyException
            dup
            new java.lang.StringBuilder
            dup
            aload 0 /* this */
            getfield org.bouncycastle.jce.provider.asymmetric.ec.KeyAgreement.kaAlgorithm:Ljava/lang/String;
            invokestatic java.lang.String.valueOf:(Ljava/lang/Object;)Ljava/lang/String;
            invokespecial java.lang.StringBuilder.<init>:(Ljava/lang/String;)V
            ldc " key agreement requires "
            invokevirtual java.lang.StringBuilder.append:(Ljava/lang/String;)Ljava/lang/StringBuilder;
        20: .line 255
            ldc Lorg/bouncycastle/jce/interfaces/ECPrivateKey;
            invokestatic org.bouncycastle.jce.provider.asymmetric.ec.KeyAgreement.getSimpleName:(Ljava/lang/Class;)Ljava/lang/String;
            invokevirtual java.lang.StringBuilder.append:(Ljava/lang/String;)Ljava/lang/StringBuilder;
            ldc " for initialisation"
            invokevirtual java.lang.StringBuilder.append:(Ljava/lang/String;)Ljava/lang/StringBuilder;
            invokevirtual java.lang.StringBuilder.toString:()Ljava/lang/String;
        21: .line 254
            invokespecial java.security.InvalidKeyException.<init>:(Ljava/lang/String;)V
            athrow
        22: .line 258
      StackMap locals:
      StackMap stack:
            aload 1 /* key */
            checkcast java.security.PrivateKey
            invokestatic org.bouncycastle.jce.provider.asymmetric.ec.ECUtil.generatePrivateKeyParameter:(Ljava/security/PrivateKey;)Lorg/bouncycastle/crypto/params/AsymmetricKeyParameter;
            checkcast org.bouncycastle.crypto.params.ECPrivateKeyParameters
            astore 2 /* privKey */
        start local 2 // org.bouncycastle.crypto.params.ECPrivateKeyParameters privKey
        23: .line 259
            aload 0 /* this */
            aload 2 /* privKey */
            invokevirtual org.bouncycastle.crypto.params.ECPrivateKeyParameters.getParameters:()Lorg/bouncycastle/crypto/params/ECDomainParameters;
            putfield org.bouncycastle.jce.provider.asymmetric.ec.KeyAgreement.parameters:Lorg/bouncycastle/crypto/params/ECDomainParameters;
        24: .line 261
            aload 0 /* this */
            getfield org.bouncycastle.jce.provider.asymmetric.ec.KeyAgreement.agreement:Lorg/bouncycastle/crypto/BasicAgreement;
            aload 2 /* privKey */
            invokeinterface org.bouncycastle.crypto.BasicAgreement.init:(Lorg/bouncycastle/crypto/CipherParameters;)V
        end local 2 // org.bouncycastle.crypto.params.ECPrivateKeyParameters privKey
        25: .line 263
      StackMap locals:
      StackMap stack:
            return
        end local 1 // java.security.Key key
        end local 0 // org.bouncycastle.jce.provider.asymmetric.ec.KeyAgreement this
      LocalVariableTable:
        Start  End  Slot           Name  Signature
            0   26     0           this  Lorg/bouncycastle/jce/provider/asymmetric/ec/KeyAgreement;
            0   26     1            key  Ljava/security/Key;
            6   17     2     mqvPrivKey  Lorg/bouncycastle/jce/interfaces/MQVPrivateKey;
            8   17     3  staticPrivKey  Lorg/bouncycastle/crypto/params/ECPrivateKeyParameters;
           10   17     4   ephemPrivKey  Lorg/bouncycastle/crypto/params/ECPrivateKeyParameters;
           11   17     5    ephemPubKey  Lorg/bouncycastle/crypto/params/ECPublicKeyParameters;
           15   17     6    localParams  Lorg/bouncycastle/crypto/params/MQVPrivateParameters;
           23   25     2        privKey  Lorg/bouncycastle/crypto/params/ECPrivateKeyParameters;
    Exceptions:
      throws java.security.InvalidKeyException
    MethodParameters:
      Name  Flags
      key   

  private static java.lang.String getSimpleName(java.lang.Class);
    descriptor: (Ljava/lang/Class;)Ljava/lang/String;
    flags: (0x000a) ACC_PRIVATE, ACC_STATIC
    Code:
      stack=3, locals=2, args_size=1
        start local 0 // java.lang.Class clazz
         0: .line 267
            aload 0 /* clazz */
            invokevirtual java.lang.Class.getName:()Ljava/lang/String;
            astore 1 /* fullName */
        start local 1 // java.lang.String fullName
         1: .line 269
            aload 1 /* fullName */
            aload 1 /* fullName */
            bipush 46
            invokevirtual java.lang.String.lastIndexOf:(I)I
            iconst_1
            iadd
            invokevirtual java.lang.String.substring:(I)Ljava/lang/String;
            areturn
        end local 1 // java.lang.String fullName
        end local 0 // java.lang.Class clazz
      LocalVariableTable:
        Start  End  Slot      Name  Signature
            0    2     0     clazz  Ljava/lang/Class;
            1    2     1  fullName  Ljava/lang/String;
    MethodParameters:
       Name  Flags
      clazz  
}
SourceFile: "KeyAgreement.java"
NestMembers:
  org.bouncycastle.jce.provider.asymmetric.ec.KeyAgreement$DH  org.bouncycastle.jce.provider.asymmetric.ec.KeyAgreement$DHC  org.bouncycastle.jce.provider.asymmetric.ec.KeyAgreement$DHwithSHA1KDF  org.bouncycastle.jce.provider.asymmetric.ec.KeyAgreement$MQV  org.bouncycastle.jce.provider.asymmetric.ec.KeyAgreement$MQVwithSHA1KDF
InnerClasses:
  public DH = org.bouncycastle.jce.provider.asymmetric.ec.KeyAgreement$DH of org.bouncycastle.jce.provider.asymmetric.ec.KeyAgreement
  public DHC = org.bouncycastle.jce.provider.asymmetric.ec.KeyAgreement$DHC of org.bouncycastle.jce.provider.asymmetric.ec.KeyAgreement
  public DHwithSHA1KDF = org.bouncycastle.jce.provider.asymmetric.ec.KeyAgreement$DHwithSHA1KDF of org.bouncycastle.jce.provider.asymmetric.ec.KeyAgreement
  public MQV = org.bouncycastle.jce.provider.asymmetric.ec.KeyAgreement$MQV of org.bouncycastle.jce.provider.asymmetric.ec.KeyAgreement
  public MQVwithSHA1KDF = org.bouncycastle.jce.provider.asymmetric.ec.KeyAgreement$MQVwithSHA1KDF of org.bouncycastle.jce.provider.asymmetric.ec.KeyAgreement