Add attic

These files are not relevant at all, but helped during research,
development, debugging. Hence, don't throw them away, but move them a
bit more out of sight.

attic/debug_toolbar_resources.txt

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+https://django-debug-toolbar.readthedocs.io/en/latest/installation.html
+https://stackoverflow.com/questions/6548947/how-can-django-debug-toolbar-be-set-to-work-for-just-some-users/6549317#6549317

attic/encryption_test.py

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+#!/usr/bin/env python
+# -*- coding: utf-8 -*-
+
+import os
+import django
+import timeit
+
+os.environ.setdefault(
+    "DJANGO_SETTINGS_MODULE", "ivatar.settings"
+)  # pylint: disable=wrong-import-position
+django.setup()  # pylint: disable=wrong-import-position
+
+from ivatar.ivataraccount.models import ConfirmedEmail, APIKey
+from simplecrypt import decrypt
+from binascii import unhexlify
+
+digest = None
+digest_sha256 = None
+
+
+def get_digest_sha256():
+    digest_sha256 = ConfirmedEmail.objects.first().encrypted_digest_sha256(
+        secret_key=APIKey.objects.first()
+    )
+    return digest_sha256
+
+
+def get_digest():
+    digest = ConfirmedEmail.objects.first().encrypted_digest(
+        secret_key=APIKey.objects.first()
+    )
+    return digest
+
+
+def decrypt_digest():
+    return decrypt(APIKey.objects.first().secret_key, unhexlify(digest))
+
+
+def decrypt_digest_256():
+    return decrypt(APIKey.objects.first().secret_key, unhexlify(digest_sha256))
+
+
+digest = get_digest()
+digest_sha256 = get_digest_sha256()
+
+print("Encrypt digest:        %s" % timeit.timeit(get_digest, number=1))
+print("Encrypt digest_sha256: %s" % timeit.timeit(get_digest_sha256, number=1))
+print("Decrypt digest:        %s" % timeit.timeit(decrypt_digest, number=1))
+print("Decrypt digest_sha256: %s" % timeit.timeit(decrypt_digest_256, number=1))

attic/example_mysql_config

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+DATABASES['default'] = {
+    'ENGINE': 'django.db.backends.mysql',
+    'NAME': 'libravatar',
+    'USER': 'libravatar',
+    'PASSWORD': 'libravatar',
+    'HOST': 'localhost',
+}