Add comment to test case helper function
Clarify what the use of os.urandom is for when generating a secret for totp testing. Change-Id: I04332d2acede8cdb430714cdb8b34d75b514fceb
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@ -409,6 +409,8 @@ def new_ec2_credential(user_id, project_id=None, blob=None, **kwargs):
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def new_totp_credential(user_id, project_id=None, blob=None):
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if not blob:
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# NOTE(notmorgan): 20 bytes of data from os.urandom for
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# a totp secret.
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blob = base64.b32encode(os.urandom(20)).decode('utf-8')
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credential = new_credential_ref(user_id=user_id,
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project_id=project_id,
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