- def pseudonymize_user_name(self, user_name: UserName) -> PseudoUserName:
- hasher = hashlib.sha256()
- hasher.update(user_name.encode('utf-8'))
- # salt
- hasher.update(b'\0')
- hasher.update(self.salt)
- pseudonymized = base64.b64encode(hasher.digest()).decode('utf-8')
- return PseudoUserName(pseudonymized)
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