QCryptographicHash Question

[tntcoda]

Hi,

Given the following code:

QByteArray data_to_hash = "test_data";
	QCryptographicHash hash(QCryptographicHash::Sha1);
 
	hash.addData(data_to_hash);
	qDebug(hash.result().toHex());

QByteArray data_to_hash = "test_data";
	QCryptographicHash hash(QCryptographicHash::Sha1);

	hash.addData(data_to_hash);
	qDebug(hash.result().toHex());

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I get a hash of 4f20c649228a94d3cc4d31e9d12ec593e20c0202

However... the sha1sum program gives me the following:
...]$ echo "test_data" | sha1sum
45109238d9ab2fac4e954d1b38dc032cf2de629a

I'm probably being incredibly stupid here, but why don't the hash values match? Does qt do some kind of input conversion behind the scenes, or use a salt or something?

Thanks,

Jack

[wysota]

Echo adds a newline character at the end of the stream.

$ echo -n "test_data" | sha1sum
4f20c649228a94d3cc4d31e9d12ec593e20c0202

[tntcoda]

Whoops! Thanks very much for the help