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POSecretKeyFactory.getInstance("PBKDF2WithHmacSHA512") throws NoSuchAlgorithmException
 

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  1. POSecretKeyFactory.getInstance("PBKDF2WithHmacSHA512") throws NoSuchAlgorithmException
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    <p>After a little bit of research and some work I finally was able to hash salt the password now there is a question which is on my mind I have used the SHA1 method and I would like to try to use the SHA512 because I was told it's better (more secure) so the following is my code its a little bit all over the place but I think its comprehensible so:</p> <pre><code>public class Safety { //calling some parameters for possible later changes public static final String algorithm = "PBKDF2WithHmacSHA1"; public static final int saltbytesize = 24; public static final int hashbytesize = 24; public static final int iterations = 1000; public static final int iIndex = 0; public static final int sIndex = 1; public static final int pbkIndex = 2; public static Users passwordHash(Users user) throws NoSuchAlgorithmException, InvalidKeySpecException { SecureRandom sR = new SecureRandom(); byte[] pws = new byte[saltbytesize]; sR.nextBytes(pws); byte[] pwh = pbkdf2(user.getPassword().toCharArray(), pws, iterations, hashbytesize); user.setPassword(toHex(pwh)); byte[] sas = new byte[saltbytesize]; sR.nextBytes(sas); byte[] sah = pbkdf2(user.getsA().toCharArray(), sas, iterations, hashbytesize); user.setsA(toHex(sah)); user.setUserhash(pws); user.setSahash(sas); return user; } public static boolean hashpassword(String username, String password, Users user) throws NoSuchAlgorithmException, InvalidKeySpecException { byte[] pws = user.getUserhash(); byte[] pwh = pbkdf2(password.toCharArray(), pws, iterations, hashbytesize); String searcher = toHex(pwh) + username; String searched = user.getPassword() + user.getUsername(); if (searcher.equals(searched)) { return true; } return false; } private static byte[] pbkdf2(char[] password, byte[] salt, int iterations, int bytes) throws NoSuchAlgorithmException, InvalidKeySpecException { PBEKeySpec spec = new PBEKeySpec(password, salt, iterations, bytes * 8); SecretKeyFactory skf = SecretKeyFactory.getInstance(algorithm); return skf.generateSecret(spec).getEncoded(); } private static String toHex(byte[] array) { BigInteger bi = new BigInteger(1, array); String hex = bi.toString(16); int paddingLength = (array.length * 2) - hex.length(); if (paddingLength &gt; 0) return String.format("%0" + paddingLength + "d", 0) + hex; else return hex; } } </code></pre> <p>So that's my code, however, I have not been able to make that SHA512 and I have already tried <code>public static final String algorithm = "PBKDF2WithHmacSHA512"</code> but that doesn't seem to be the right string for the algorithm since it throws the no such algorithm exception.</p> <p>I also welcome any changes that would make the code better.</p> <p>as stated above! relevant few line(s) of code</p> <blockquote> <blockquote> <blockquote> <blockquote> <blockquote> <p>public static final String algorithm = "PBKDF2WithHmacSHA512"&lt;&lt;&lt;&lt;&lt;</p> </blockquote> </blockquote> </blockquote> </blockquote> </blockquote>
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    1. USJavier
    1. USFahadalkadhi95
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    1. COalways format your code to look pretty if you're asking people to look at it. Clarity of code is half the question.
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      1. POSecretKeyFactory.getInstance("PBKDF2WithHmacSHA512") throws NoSuchAlgorithmException
      1. USMike 'Pomax' Kamermans
    2. COThank you and I know that but the way I hack kind off limits my ability to make it look pretty.
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      1. POSecretKeyFactory.getInstance("PBKDF2WithHmacSHA512") throws NoSuchAlgorithmException
      1. USFahadalkadhi95
    3. COnot really. the code you pasted has misaligned spacing and condensed statements, etc. at the very least fix that to be nice to potential question-answerers =)
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      1. POSecretKeyFactory.getInstance("PBKDF2WithHmacSHA512") throws NoSuchAlgorithmException
      1. USMike 'Pomax' Kamermans
 

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