diff --git a/schema/000_extensions.sql b/schema/000_extensions.sql
new file mode 100644
index 0000000..436ab0f
--- /dev/null
+++ b/schema/000_extensions.sql
@@ -0,0 +1 @@
+create extension pgcrypto;
diff --git a/schema/000_hashed_text.sql b/schema/000_hashed_text.sql
deleted file mode 100644
index c3ebb9c..0000000
--- a/schema/000_hashed_text.sql
+++ /dev/null
@@ -1 +0,0 @@
-create type hashed_text as (hashed text);
diff --git a/schema/000_email.sql b/schema/010_email.sql
similarity index 100%
rename from schema/000_email.sql
rename to schema/010_email.sql
diff --git a/schema/010_hashed_text.sql b/schema/010_hashed_text.sql
new file mode 100644
index 0000000..1cde164
--- /dev/null
+++ b/schema/010_hashed_text.sql
@@ -0,0 +1,27 @@
+create type hashed_text as (hashed text);
+
+create function hashed_text_string(hashed hashed_text)
+  returns text
+  language sql
+  immutable
+  as 'select (hashed.hashed);';
+
+create function hash_text(plain text)
+  returns hashed_text
+  language plpgsql
+  immutable
+  as $$
+begin
+  return row(crypt(plain, gen_salt('bf')));
+end;
+$$;
+
+create function hashed_text_matches(plain text, hashed hashed_text)
+  returns boolean
+  language plpgsql
+  immutable
+  as $$
+begin
+ return hashed_text_string(hashed) = crypt(plain, hashed_text_string(hashed));
+end;
+$$;
diff --git a/schema/010_audit.sql b/schema/020_audit.sql
similarity index 100%
rename from schema/010_audit.sql
rename to schema/020_audit.sql
diff --git a/schema/010_thread.sql b/schema/020_thread.sql
similarity index 100%
rename from schema/010_thread.sql
rename to schema/020_thread.sql
diff --git a/schema/010_user.sql b/schema/020_user.sql
similarity index 100%
rename from schema/010_user.sql
rename to schema/020_user.sql