On 2018-10-15 23:16, Jérôme Godbout wrote:
Hi,
I'm trying to find the C++ equivalent of this python:
/import hashlib/
/import hmac/
/hmac.new(bytearray(m_api_secret, 'utf-8'), bytearray(payload, 'utf-8'),
hashlib.sha256).hexdigest()/
/
/
Or my Javascript equivalent (both give the same results):
crypto.createHmac("sha256", m_api_secret).update(payload).digest("hex");
/
/
I have try the following:
* QMessageAuthenticationCode::hash(payload,
QByteArray::fromHex(m_api_secret), QCryptographicHash::Sha256).toHex();
* QMessageAuthenticationCode::hash(payload,
QByteArray::fromHex(m_api_secret),
QCryptographicHash::Sha3_256).toHex();
* QMessageAuthenticationCode::hash(payload, m_api_secret,
QCryptographicHash::Sha256).toHex();
* QMessageAuthenticationCode::hash(payload, m_api_secret,
QCryptographicHash::Sha3_256).toHex();
* QMessageAuthenticationCode::hash(QByteArray::fromHex(payload),
QByteArray::fromHex(m_api_secret), QCryptographicHash::Sha256).toHex();
* QMessageAuthenticationCode::hash(QByteArray::fromHex(payload),
QByteArray::fromHex(m_api_secret),
QCryptographicHash::Sha3_256).toHex();
But I never get the same results as the Python or Javascript one. Maybe
I'm using the wrong class here. Anybody have a good pointer on how to do
this?
Any good hmac sha256 class to perform this?
Hi, the QMessageAuthenticationCode class should work fine, and your #3
attempt should be correct.
Just tested with key = "my secret key" and payload "my message":
Python3.6.6 on Ubuntu:
>>> hmac.new(bytearray('my secret key', 'utf-8'), bytearray('my
message', 'utf-8'), hashlib.sha256).hexdigest()
'8cb6f28c5bd8e02fef83fdb7cc00b2116f5aefd868c3c4bed4db3b99b0450372'
Qt 5.11.2 on Win7:
qDebug() << QMessageAuthenticationCode::hash("my message","my
secret key", QCryptographicHash::Sha256).toHex();
23:43:52: Starting
C:\Projects\build-untitled-Desktop_Qt_5_11_2_MSVC2015_32bit-Release\release\untitled...
"8cb6f28c5bd8e02fef83fdb7cc00b2116f5aefd868c3c4bed4db3b99b0450372"
Rgrds Henry
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