Reliable implementation of PBKDF2-HMAC-SHA256 for JAVA

Is there any reliable implementation of PBKDF2-HMAC-SHA256 for JAVA?

I used to encrypting by bouncycastle but it does not provides PBKDF2WithHmacSHA256'.

I do not want to write crypto module by myself.

Could you recommend any alternative library or algorithm (if i can stick with bouncycastle)

(here are algorithms that bouncycastle supports algorithm)
http://www.bouncycastle.org/specifications.html

edited Nov 22 '16 at 4:32

asked Mar 22 '14 at 17:13

dgregory

1,0031819

1

stackoverflow.com/questions/9147463/…

– Konstantin V. Salikhov
Mar 22 '14 at 17:17

@KonstantinV.Salikhov I already read but it's hard to believe that it is fully proven. And if i use that, I have to implement code for Jasypt API

– dgregory
Mar 22 '14 at 17:33

add a comment |

Is there any reliable implementation of PBKDF2-HMAC-SHA256 for JAVA?

I used to encrypting by bouncycastle but it does not provides PBKDF2WithHmacSHA256'.

I do not want to write crypto module by myself.

Could you recommend any alternative library or algorithm (if i can stick with bouncycastle)

(here are algorithms that bouncycastle supports algorithm)
http://www.bouncycastle.org/specifications.html

edited Nov 22 '16 at 4:32

asked Mar 22 '14 at 17:13

dgregory

1,0031819

1

stackoverflow.com/questions/9147463/…

– Konstantin V. Salikhov
Mar 22 '14 at 17:17

@KonstantinV.Salikhov I already read but it's hard to believe that it is fully proven. And if i use that, I have to implement code for Jasypt API

– dgregory
Mar 22 '14 at 17:33

add a comment |

Is there any reliable implementation of PBKDF2-HMAC-SHA256 for JAVA?

I used to encrypting by bouncycastle but it does not provides PBKDF2WithHmacSHA256'.

I do not want to write crypto module by myself.

Could you recommend any alternative library or algorithm (if i can stick with bouncycastle)

(here are algorithms that bouncycastle supports algorithm)
http://www.bouncycastle.org/specifications.html

edited Nov 22 '16 at 4:32

asked Mar 22 '14 at 17:13

dgregory

1,0031819

Is there any reliable implementation of PBKDF2-HMAC-SHA256 for JAVA?

I used to encrypting by bouncycastle but it does not provides PBKDF2WithHmacSHA256'.

I do not want to write crypto module by myself.

Could you recommend any alternative library or algorithm (if i can stick with bouncycastle)

(here are algorithms that bouncycastle supports algorithm)
http://www.bouncycastle.org/specifications.html

java cryptography bouncycastle pbkdf2

edited Nov 22 '16 at 4:32

asked Mar 22 '14 at 17:13

dgregory

1,0031819

edited Nov 22 '16 at 4:32

asked Mar 22 '14 at 17:13

dgregory

1,0031819

edited Nov 22 '16 at 4:32

asked Mar 22 '14 at 17:13

dgregory

1,0031819

asked Mar 22 '14 at 17:13

dgregory

1,0031819

asked Mar 22 '14 at 17:13

dgregory

1,0031819

1

stackoverflow.com/questions/9147463/…

– Konstantin V. Salikhov
Mar 22 '14 at 17:17

@KonstantinV.Salikhov I already read but it's hard to believe that it is fully proven. And if i use that, I have to implement code for Jasypt API

– dgregory
Mar 22 '14 at 17:33

add a comment |

1

stackoverflow.com/questions/9147463/…

– Konstantin V. Salikhov
Mar 22 '14 at 17:17

@KonstantinV.Salikhov I already read but it's hard to believe that it is fully proven. And if i use that, I have to implement code for Jasypt API

– dgregory
Mar 22 '14 at 17:33

stackoverflow.com/questions/9147463/…

– Konstantin V. Salikhov
Mar 22 '14 at 17:17

@KonstantinV.Salikhov I already read but it's hard to believe that it is fully proven. And if i use that, I have to implement code for Jasypt API

– dgregory
Mar 22 '14 at 17:33

add a comment |

3 Answers
3

active

oldest

votes

Using BouncyCastle classes directly:

PKCS5S2ParametersGenerator gen = new PKCS5S2ParametersGenerator(new SHA256Digest());

gen.init("password".getBytes("UTF-8"), "salt".getBytes(), 4096);

byte dk = ((KeyParameter) gen.generateDerivedParameters(256)).getKey();

answered Mar 24 '14 at 21:42

Pasi

1,345810

add a comment |

It is available in Java 8:

public static byte getEncryptedPassword(

                                         String password,

                                         byte salt,

                                         int iterations,

                                         int derivedKeyLength

                                         ) throws NoSuchAlgorithmException, InvalidKeySpecException {

    KeySpec spec = new PBEKeySpec(

                                 password.toCharArray(),

                                 salt,

                                 iterations,

                                 derivedKeyLength * 8

                                 );



    SecretKeyFactory f = SecretKeyFactory.getInstance("PBKDF2WithHmacSHA256");



    return f.generateSecret(spec).getEncoded();

}

edited Apr 2 '18 at 10:15

Andrii Abramov

4,24643149

answered Jan 13 '15 at 17:56

mjrduran

35026

1

Strange, I could not get the Java 8 version to work correctly. It generated output, but a different output than Bouncy Castle and the Node.js equivalent

– Kirby
Jan 21 '15 at 17:54

3

@Kirby Make sure you only use ASCII, Java 8 is a bit weird in the sense that it uses only the lower 8 bits of char (i.e. Windows-1252 compatible character encoding).

– Maarten Bodewes
Sep 15 '15 at 0:28

Works like a charm. BTW, if you want to use 512-byte digest, just change "PBKDF2WithHmacSHA256" to "PBKDF2WithHmacSHA512".

– Yevhenii Kanivets
Dec 28 '18 at 11:34

add a comment |

Using spongycastle (java on android)

Replace spongycastle with bouncycastle if you are using bouncycastle on java directly

import org.spongycastle.crypto.generators.PKCS5S2ParametersGenerator;

import org.spongycastle.crypto.digests.SHA256Digest;

import org.spongycastle.crypto.params.KeyParameter;



public class Crypto {

    public String pbkdf2(String secret, String salt, int iterations, int keyLength) {

        PKCS5S2ParametersGenerator gen = new PKCS5S2ParametersGenerator(new SHA256Digest());

        byte secretData = secret.getBytes();

        byte saltData = salt.getBytes();

        gen.init(secretData, saltData, iterations);

        byte derivedKey = ((KeyParameter)gen.generateDerivedParameters(keyLength * 8)).getKey();    

        return toHex(derivedKey);

    }



    private static String toHex(byte bytes) {

        BigInteger bi = new BigInteger(1, bytes);

        return String.format("%0" + (bytes.length << 1) + "x", bi);

    }

}

answered Dec 5 '18 at 12:18

Guillaume Vincent

5,05274871

add a comment |

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3 Answers
3

active

oldest

votes

3 Answers
3

active

oldest

votes

Using BouncyCastle classes directly:

PKCS5S2ParametersGenerator gen = new PKCS5S2ParametersGenerator(new SHA256Digest());

gen.init("password".getBytes("UTF-8"), "salt".getBytes(), 4096);

byte dk = ((KeyParameter) gen.generateDerivedParameters(256)).getKey();

answered Mar 24 '14 at 21:42

Pasi

1,345810

add a comment |

Using BouncyCastle classes directly:

PKCS5S2ParametersGenerator gen = new PKCS5S2ParametersGenerator(new SHA256Digest());

gen.init("password".getBytes("UTF-8"), "salt".getBytes(), 4096);

byte dk = ((KeyParameter) gen.generateDerivedParameters(256)).getKey();

answered Mar 24 '14 at 21:42

Pasi

1,345810

add a comment |

Using BouncyCastle classes directly:

PKCS5S2ParametersGenerator gen = new PKCS5S2ParametersGenerator(new SHA256Digest());

gen.init("password".getBytes("UTF-8"), "salt".getBytes(), 4096);

byte dk = ((KeyParameter) gen.generateDerivedParameters(256)).getKey();

answered Mar 24 '14 at 21:42

Pasi

1,345810

Using BouncyCastle classes directly:

PKCS5S2ParametersGenerator gen = new PKCS5S2ParametersGenerator(new SHA256Digest());

gen.init("password".getBytes("UTF-8"), "salt".getBytes(), 4096);

byte dk = ((KeyParameter) gen.generateDerivedParameters(256)).getKey();

answered Mar 24 '14 at 21:42

Pasi

1,345810

answered Mar 24 '14 at 21:42

Pasi

1,345810

answered Mar 24 '14 at 21:42

Pasi

1,345810

answered Mar 24 '14 at 21:42

Pasi

1,345810

add a comment |

It is available in Java 8:

public static byte getEncryptedPassword(

                                         String password,

                                         byte salt,

                                         int iterations,

                                         int derivedKeyLength

                                         ) throws NoSuchAlgorithmException, InvalidKeySpecException {

    KeySpec spec = new PBEKeySpec(

                                 password.toCharArray(),

                                 salt,

                                 iterations,

                                 derivedKeyLength * 8

                                 );



    SecretKeyFactory f = SecretKeyFactory.getInstance("PBKDF2WithHmacSHA256");



    return f.generateSecret(spec).getEncoded();

}

edited Apr 2 '18 at 10:15

Andrii Abramov

4,24643149

answered Jan 13 '15 at 17:56

mjrduran

35026

1

Strange, I could not get the Java 8 version to work correctly. It generated output, but a different output than Bouncy Castle and the Node.js equivalent

– Kirby
Jan 21 '15 at 17:54

3

@Kirby Make sure you only use ASCII, Java 8 is a bit weird in the sense that it uses only the lower 8 bits of char (i.e. Windows-1252 compatible character encoding).

– Maarten Bodewes
Sep 15 '15 at 0:28

Works like a charm. BTW, if you want to use 512-byte digest, just change "PBKDF2WithHmacSHA256" to "PBKDF2WithHmacSHA512".

– Yevhenii Kanivets
Dec 28 '18 at 11:34

add a comment |

It is available in Java 8:

public static byte getEncryptedPassword(

                                         String password,

                                         byte salt,

                                         int iterations,

                                         int derivedKeyLength

                                         ) throws NoSuchAlgorithmException, InvalidKeySpecException {

    KeySpec spec = new PBEKeySpec(

                                 password.toCharArray(),

                                 salt,

                                 iterations,

                                 derivedKeyLength * 8

                                 );



    SecretKeyFactory f = SecretKeyFactory.getInstance("PBKDF2WithHmacSHA256");



    return f.generateSecret(spec).getEncoded();

}

edited Apr 2 '18 at 10:15

Andrii Abramov

4,24643149

answered Jan 13 '15 at 17:56

mjrduran

35026

1

Strange, I could not get the Java 8 version to work correctly. It generated output, but a different output than Bouncy Castle and the Node.js equivalent

– Kirby
Jan 21 '15 at 17:54

3

@Kirby Make sure you only use ASCII, Java 8 is a bit weird in the sense that it uses only the lower 8 bits of char (i.e. Windows-1252 compatible character encoding).

– Maarten Bodewes
Sep 15 '15 at 0:28

Works like a charm. BTW, if you want to use 512-byte digest, just change "PBKDF2WithHmacSHA256" to "PBKDF2WithHmacSHA512".

– Yevhenii Kanivets
Dec 28 '18 at 11:34

add a comment |

It is available in Java 8:

public static byte getEncryptedPassword(

                                         String password,

                                         byte salt,

                                         int iterations,

                                         int derivedKeyLength

                                         ) throws NoSuchAlgorithmException, InvalidKeySpecException {

    KeySpec spec = new PBEKeySpec(

                                 password.toCharArray(),

                                 salt,

                                 iterations,

                                 derivedKeyLength * 8

                                 );



    SecretKeyFactory f = SecretKeyFactory.getInstance("PBKDF2WithHmacSHA256");



    return f.generateSecret(spec).getEncoded();

}

edited Apr 2 '18 at 10:15

Andrii Abramov

4,24643149

answered Jan 13 '15 at 17:56

mjrduran

35026

It is available in Java 8:

public static byte getEncryptedPassword(

                                         String password,

                                         byte salt,

                                         int iterations,

                                         int derivedKeyLength

                                         ) throws NoSuchAlgorithmException, InvalidKeySpecException {

    KeySpec spec = new PBEKeySpec(

                                 password.toCharArray(),

                                 salt,

                                 iterations,

                                 derivedKeyLength * 8

                                 );



    SecretKeyFactory f = SecretKeyFactory.getInstance("PBKDF2WithHmacSHA256");



    return f.generateSecret(spec).getEncoded();

}

edited Apr 2 '18 at 10:15

Andrii Abramov

4,24643149

answered Jan 13 '15 at 17:56

mjrduran

35026

edited Apr 2 '18 at 10:15

Andrii Abramov

4,24643149

edited Apr 2 '18 at 10:15

Andrii Abramov

4,24643149

edited Apr 2 '18 at 10:15

Andrii Abramov

4,24643149

answered Jan 13 '15 at 17:56

mjrduran

35026

answered Jan 13 '15 at 17:56

mjrduran

35026

answered Jan 13 '15 at 17:56

mjrduran

35026

1

Strange, I could not get the Java 8 version to work correctly. It generated output, but a different output than Bouncy Castle and the Node.js equivalent

– Kirby
Jan 21 '15 at 17:54

3

@Kirby Make sure you only use ASCII, Java 8 is a bit weird in the sense that it uses only the lower 8 bits of char (i.e. Windows-1252 compatible character encoding).

– Maarten Bodewes
Sep 15 '15 at 0:28

Works like a charm. BTW, if you want to use 512-byte digest, just change "PBKDF2WithHmacSHA256" to "PBKDF2WithHmacSHA512".

– Yevhenii Kanivets
Dec 28 '18 at 11:34

add a comment |

1

Strange, I could not get the Java 8 version to work correctly. It generated output, but a different output than Bouncy Castle and the Node.js equivalent

– Kirby
Jan 21 '15 at 17:54

3

@Kirby Make sure you only use ASCII, Java 8 is a bit weird in the sense that it uses only the lower 8 bits of char (i.e. Windows-1252 compatible character encoding).

– Maarten Bodewes
Sep 15 '15 at 0:28

Works like a charm. BTW, if you want to use 512-byte digest, just change "PBKDF2WithHmacSHA256" to "PBKDF2WithHmacSHA512".

– Yevhenii Kanivets
Dec 28 '18 at 11:34

Strange, I could not get the Java 8 version to work correctly. It generated output, but a different output than Bouncy Castle and the Node.js equivalent

– Kirby
Jan 21 '15 at 17:54

@Kirby Make sure you only use ASCII, Java 8 is a bit weird in the sense that it uses only the lower 8 bits of char (i.e. Windows-1252 compatible character encoding).

– Maarten Bodewes
Sep 15 '15 at 0:28

Works like a charm. BTW, if you want to use 512-byte digest, just change "PBKDF2WithHmacSHA256" to "PBKDF2WithHmacSHA512".

– Yevhenii Kanivets
Dec 28 '18 at 11:34

add a comment |

Using spongycastle (java on android)

Replace spongycastle with bouncycastle if you are using bouncycastle on java directly

import org.spongycastle.crypto.generators.PKCS5S2ParametersGenerator;

import org.spongycastle.crypto.digests.SHA256Digest;

import org.spongycastle.crypto.params.KeyParameter;



public class Crypto {

    public String pbkdf2(String secret, String salt, int iterations, int keyLength) {

        PKCS5S2ParametersGenerator gen = new PKCS5S2ParametersGenerator(new SHA256Digest());

        byte secretData = secret.getBytes();

        byte saltData = salt.getBytes();

        gen.init(secretData, saltData, iterations);

        byte derivedKey = ((KeyParameter)gen.generateDerivedParameters(keyLength * 8)).getKey();    

        return toHex(derivedKey);

    }



    private static String toHex(byte bytes) {

        BigInteger bi = new BigInteger(1, bytes);

        return String.format("%0" + (bytes.length << 1) + "x", bi);

    }

}

answered Dec 5 '18 at 12:18

Guillaume Vincent

5,05274871

add a comment |

Using spongycastle (java on android)

Replace spongycastle with bouncycastle if you are using bouncycastle on java directly

import org.spongycastle.crypto.generators.PKCS5S2ParametersGenerator;

import org.spongycastle.crypto.digests.SHA256Digest;

import org.spongycastle.crypto.params.KeyParameter;



public class Crypto {

    public String pbkdf2(String secret, String salt, int iterations, int keyLength) {

        PKCS5S2ParametersGenerator gen = new PKCS5S2ParametersGenerator(new SHA256Digest());

        byte secretData = secret.getBytes();

        byte saltData = salt.getBytes();

        gen.init(secretData, saltData, iterations);

        byte derivedKey = ((KeyParameter)gen.generateDerivedParameters(keyLength * 8)).getKey();    

        return toHex(derivedKey);

    }



    private static String toHex(byte bytes) {

        BigInteger bi = new BigInteger(1, bytes);

        return String.format("%0" + (bytes.length << 1) + "x", bi);

    }

}

answered Dec 5 '18 at 12:18

Guillaume Vincent

5,05274871

add a comment |

Using spongycastle (java on android)

Replace spongycastle with bouncycastle if you are using bouncycastle on java directly

import org.spongycastle.crypto.generators.PKCS5S2ParametersGenerator;

import org.spongycastle.crypto.digests.SHA256Digest;

import org.spongycastle.crypto.params.KeyParameter;



public class Crypto {

    public String pbkdf2(String secret, String salt, int iterations, int keyLength) {

        PKCS5S2ParametersGenerator gen = new PKCS5S2ParametersGenerator(new SHA256Digest());

        byte secretData = secret.getBytes();

        byte saltData = salt.getBytes();

        gen.init(secretData, saltData, iterations);

        byte derivedKey = ((KeyParameter)gen.generateDerivedParameters(keyLength * 8)).getKey();    

        return toHex(derivedKey);

    }



    private static String toHex(byte bytes) {

        BigInteger bi = new BigInteger(1, bytes);

        return String.format("%0" + (bytes.length << 1) + "x", bi);

    }

}

answered Dec 5 '18 at 12:18

Guillaume Vincent

5,05274871

Using spongycastle (java on android)

Replace spongycastle with bouncycastle if you are using bouncycastle on java directly

import org.spongycastle.crypto.generators.PKCS5S2ParametersGenerator;

import org.spongycastle.crypto.digests.SHA256Digest;

import org.spongycastle.crypto.params.KeyParameter;



public class Crypto {

    public String pbkdf2(String secret, String salt, int iterations, int keyLength) {

        PKCS5S2ParametersGenerator gen = new PKCS5S2ParametersGenerator(new SHA256Digest());

        byte secretData = secret.getBytes();

        byte saltData = salt.getBytes();

        gen.init(secretData, saltData, iterations);

        byte derivedKey = ((KeyParameter)gen.generateDerivedParameters(keyLength * 8)).getKey();    

        return toHex(derivedKey);

    }



    private static String toHex(byte bytes) {

        BigInteger bi = new BigInteger(1, bytes);

        return String.format("%0" + (bytes.length << 1) + "x", bi);

    }

}

answered Dec 5 '18 at 12:18

Guillaume Vincent

5,05274871

answered Dec 5 '18 at 12:18

Guillaume Vincent

5,05274871

answered Dec 5 '18 at 12:18

Guillaume Vincent

5,05274871

answered Dec 5 '18 at 12:18

Guillaume Vincent

5,05274871

add a comment |

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