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WinDev Forum
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ChristoK!, ccc2

Encryption/Decryption - external data...

Startbeitrag von ChristoK! am 28.03.2017 06:31

Greetings gang...

Does anyone know how to use CryptStandard and DecryptStandard to encrypt and decrypt data that comes from external locations (decrtyping keys and the like)???

I would very dearly like to know what the equivalent of the below would be in WX..

crypto.createHmac ('sha1', 'XXXX')

(I realise that that is a NodeJS wrapper for OpenSSL, but it is still something I need to know how to emulate)

Any assistance would be greatly appreciated.



will generate hash

------------- Node.JS --------------------

var text = 'This is a test';
var key = 'pass1';
var algorithm = 'sha1';
var hash, hmac;
hmac = crypto.createHmac(algorithm, key);




hash = hmac.read();


--------------------- windev21 ------------

M_str is Buffer = StringToUTF8("This is a test")
m_key is Buffer = StringToUTF8("pass1" )

Info(NoSpace(BufferToHexa(HashString(HA_HMAC_SHA_160 , M_str , m_key )),sscAll) )

von ccc2 - am 28.03.2017 10:10
ccc2... that is brilliant thanks...

are you able to also show me how to decrypt back to "This is a test" ???

von ChristoK! - am 29.03.2017 02:59
HMAC-SHA1 is a one-way hash, not a bidirectional encryption algorithm. You can't decrypt it.

von ccc2 - am 29.03.2017 03:15


in that case...

my situation is I need to encrypt something at my end pass it to someone else so they can decrypt it (and vice versa)...

essentially what i need is the equivalent of the Crypt/Uncrypt functions that we use in WX for encrtyping/decrypting stuff that pass between myself and others (PHP and a Python developer)

I understand that CryptStandard/UncryptStandard are what I am supposed to use but I have as yet been unsuccessful with achieving this...

I am new to doing encryption/decryption between the platforms so any assistance is greatly appreciated...

von ChristoK! - am 29.03.2017 04:48
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