Program: 187357
Project: 187357
Buggy source:
/** 
 * Initializes the encryption engine given the number, which contains  the public key, shared apriori info, and nonces, unique to that number, which is needed to initialize the encryption engine.
 * @param number The number, which contains the cryptographic info
 * @param mode The mode to initialize the engine as, true for encryptionand false for decryption mode.
 */
private void initECEngine(Number number,boolean mode){
  SDFGenerator generator=new SDFGenerator(new SHA256Digest());
  String sharedInfo1, sharedInfo2;
  APrioriInfo sharedInfo;
  if (number.isInitiator()) {
    sharedInfo1=number.getSharedInfo1();
    sharedInfo2=number.getSharedInfo2();
  }
 else {
    sharedInfo1=number.getSharedInfo2();
    sharedInfo2=number.getSharedInfo1();
  }
  CipherParameters nonce;
  ISAACRandomGenerator CSPRNG=new ISAACRandomGenerator(new ISAACEngine());
  if (mode) {
    sharedInfo=new APrioriInfo(sharedInfo1,sharedInfo2);
    generator.init(new SDFParameters(sharedInfo1,sharedInfo2));
    nonce=new Nonce(CSPRNG,number.getNonceEncrypt());
  }
 else {
    sharedInfo=new APrioriInfo(sharedInfo1,sharedInfo2);
    generator.init(new SDFParameters(sharedInfo2,sharedInfo1));
    nonce=new Nonce(CSPRNG,number.getNonceDecrypt());
  }
  byte[] seed=new byte[generator.getDigest().getDigestSize()];
  generator.generateBytes(seed,0,0);
  ((Nonce)nonce).init(seed,seed.length);
  ECKeyParam param=new ECKeyParam();
  ECPrivateKeyParameters priKey=ECGKeyUtil.decodeBase64PriKey(param,SMSUtility.user.getPrivateKey());
  ECPublicKeyParameters pubKey=ECGKeyUtil.decodeBase64PubKey(param,number.getPublicKey());
  ECEngine engine=new ECEngine(nonce,sharedInfo);
  engine.init(mode,priKey,pubKey);
  if (mode) {
    encryptMap.put(number.getId(),engine);
  }
 else {
    decryptMap.put(number.getId(),engine);
  }
}

Fixed version (ground truth):
/** 
 * Initializes the encryption engine given the number, which contains  the public key, shared apriori info, and nonces, unique to that number, which is needed to initialize the encryption engine.
 * @param number The number, which contains the cryptographic info
 * @param mode The mode to initialize the engine as, true for encryptionand false for decryption mode.
 */
private void initECEngine(Number number,boolean mode){
  SDFGenerator generator=new SDFGenerator(new SHA256Digest());
  String sharedInfo1, sharedInfo2;
  APrioriInfo sharedInfo;
  sharedInfo1=number.getSharedInfo1();
  sharedInfo2=number.getSharedInfo2();
  Log.v("String_Node_Str",sharedInfo1);
  Log.v("String_Node_Str",sharedInfo2);
  CipherParameters nonce;
  ISAACRandomGenerator CSPRNG=new ISAACRandomGenerator(new ISAACEngine());
  if (mode) {
    sharedInfo=new APrioriInfo(sharedInfo1,sharedInfo2);
    generator.init(new SDFParameters(sharedInfo1,sharedInfo2));
    nonce=new Nonce(CSPRNG,number.getNonceEncrypt());
    Log.v("String_Node_Str",String.valueOf(number.getNonceEncrypt()));
  }
 else {
    sharedInfo=new APrioriInfo(sharedInfo1,sharedInfo2);
    generator.init(new SDFParameters(sharedInfo1,sharedInfo2));
    nonce=new Nonce(CSPRNG,number.getNonceDecrypt());
    Log.v("String_Node_Str",String.valueOf(number.getNonceDecrypt()));
  }
  byte[] seed=new byte[generator.getDigest().getDigestSize()];
  generator.generateBytes(seed,0,0);
  ((Nonce)nonce).init(seed,seed.length);
  ECKeyParam param=new ECKeyParam();
  ECPrivateKeyParameters priKey=ECGKeyUtil.decodeBase64PriKey(param,SMSUtility.user.getPrivateKey());
  ECPublicKeyParameters pubKey=ECGKeyUtil.decodeBase64PubKey(param,number.getPublicKey());
  Log.v("String_Node_Str",new String(SMSUtility.user.getPrivateKey()));
  Log.v("String_Node_Str",new String(number.getPublicKey()));
  ECEngine engine=new ECEngine(nonce,sharedInfo);
  engine.init(mode,priKey,pubKey);
  if (mode) {
    encryptMap.put(number.getId(),engine);
  }
 else {
    decryptMap.put(number.getId(),engine);
  }
}