Examples of java.security.MessageDigest.digest()

java.security.MessageDigest.digest()
Completes the hash computation by performing final operations such as padding. The digest is reset after this call is made. @return the array of bytes for the resulting hash value.

      // clientHash = H(N) xor H(g) | H(U) | s | A
      clientHash.update(ab);
      if( log.isTraceEnabled() )
      {
         MessageDigest tmp = CryptoUtil.copy(clientHash);
         log.trace("H[H(N) xor H(g) | H(U) | s | A]: "+CryptoUtil.tob64(tmp.digest()));
      }
      // clientHash = H(N) xor H(g) | H(U) | A | B
      clientHash.update(nb);
      if( log.isTraceEnabled() )
      {

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      // clientHash = H(N) xor H(g) | H(U) | A | B
      clientHash.update(nb);
      if( log.isTraceEnabled() )
      {
         MessageDigest tmp = CryptoUtil.copy(clientHash);
         log.trace("H[H(N) xor H(g) | H(U) | s | A | B]: "+CryptoUtil.tob64(tmp.digest()));
      }
      // serverHash = A
      serverHash.update(ab);
      // Calculate u as the first 32 bits of H(B)
      byte[] hB = CryptoUtil.newDigest().digest(nb);

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      BigInteger S = A_v2u.modPow(b, N);
      if( log.isTraceEnabled() )
         log.trace("S: "+CryptoUtil.tob64(S.toByteArray()));
      // K = SessionHash(S)
      MessageDigest sessionDigest = MessageDigest.getInstance(params.hashAlgorithm);
      K = sessionDigest.digest(S.toByteArray());
      if( log.isTraceEnabled() )
         log.trace("K: "+CryptoUtil.tob64(K));
      // clientHash = H(N) xor H(g) | H(U) | A | B | K
      clientHash.update(K);
      if( log.isTraceEnabled() )

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      // clientHash = H(N) xor H(g) | H(U) | A | B | K
      clientHash.update(K);
      if( log.isTraceEnabled() )
      {
         MessageDigest tmp = CryptoUtil.copy(clientHash);
         log.trace("H[H(N) xor H(g) | H(U) | s | A | B | K]: "+CryptoUtil.tob64(tmp.digest()));
      }
   }
   
   /** Returns the negotiated session K, K = SessionHash(S)
    @return the private session K byte[]

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         // serverHash = A | M | K
         serverHash.update(K);
         if( log.isTraceEnabled() )
         {
            MessageDigest tmp = CryptoUtil.copy(serverHash);
            log.trace("H(A | M1 | K)"+CryptoUtil.tob64(tmp.digest()));
         }
         valid = true;
      }
      return valid;
   }

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         log.trace("H(N) xor H(g): "+CryptoUtil.tob64(hxg));
      clientHash.update(hxg);
      if( log.isTraceEnabled() )
      {
         MessageDigest tmp = CryptoUtil.copy(clientHash);
         log.trace("H[H(N) xor H(g)]: "+CryptoUtil.tob64(tmp.digest()));
      }
      // clientHash = H(N) xor H(g) | H(U)
      clientHash.update(CryptoUtil.newDigest().digest(username.getBytes()));
      if( log.isTraceEnabled() )
      {

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      // clientHash = H(N) xor H(g) | H(U)
      clientHash.update(CryptoUtil.newDigest().digest(username.getBytes()));
      if( log.isTraceEnabled() )
      {
         MessageDigest tmp = CryptoUtil.copy(clientHash);
         log.trace("H[H(N) xor H(g) | H(U)]: "+CryptoUtil.tob64(tmp.digest()));
      }
      // clientHash = H(N) xor H(g) | H(U) | s
      clientHash.update(params.s);
      if( log.isTraceEnabled() )
      {

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      // clientHash = H(N) xor H(g) | H(U) | s
      clientHash.update(params.s);
      if( log.isTraceEnabled() )
      {
         MessageDigest tmp = CryptoUtil.copy(clientHash);
         log.trace("H[H(N) xor H(g) | H(U) | s]: "+CryptoUtil.tob64(tmp.digest()));
      }
      K = null;
   }
   
   /**

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         // clientHash = H(N) xor H(g) | H(U) | A
         clientHash.update(Abytes);
         if( log.isTraceEnabled() )
         {
            MessageDigest tmp = CryptoUtil.copy(clientHash);
            log.trace("H[H(N) xor H(g) | H(U) | s | A]: "+CryptoUtil.tob64(tmp.digest()));
         }
         // serverHash = A
         serverHash.update(Abytes);
      }
      return Abytes;

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      // clientHash = H(N) xor H(g) | H(U) | s | A | B
      clientHash.update(Bbytes);
      if( log.isTraceEnabled() )
      {
         MessageDigest tmp = CryptoUtil.copy(clientHash);
         log.trace("H[H(N) xor H(g) | H(U) | s | A | B]: "+CryptoUtil.tob64(tmp.digest()));
      }
      // Calculate u as the first 32 bits of H(B)
      byte[] hB = CryptoUtil.newDigest().digest(Bbytes);
      byte[] ub =
      {hB[0], hB[1], hB[2], hB[3]};

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