Encryption

[tobeyt23]

Ok so I was asked to use this to encrypt my data:

 

(first encoding)

HashAlhorithm: SHA512

Passphrase: somepassphrase

Saltvalue: somesaltvalue

PasswordIterations: 42

Initvector: someinitvector


(second encoding)

HashAlhorithm: SHA256

Passphrase: somepassphrase2

Saltvalue: somesaltvalue2

PasswordIterations: 25

Initvector: someinitvector2

 

How would I do this???

[Mchl]

1. It's not encryption, it's hashing

2. hash

[tobeyt23]

This is what I have but said it was incorrect:

 

hash('sha256', PASSPHRASE2 . SALT2. hash('sha512', PASSPHRASE1 . SALT1 . $data));

[tobeyt23]

Okay I have this but still don't know how to use the InitVectorBytes:

 

$iteration1 = '42';
    $iteration2 = '25';

    while(--$iteration1):
        $data = hash('sha512', $data . SALT1. PASSPHRASE1);
    endwhile;

    while(--$iteration2):
        $data = hash('sha256', $data . SALT2. PASSPHRASE2);
    endwhile;

    return $data;

[Mchl]

May I ask what's the point of this? Hashing the hash 41 times doesn't make it any more hashed.

[tobeyt23]

that is the way i was asked to do it, not sure.