Encrypted Text

1. Scribal

1.1. Explicit

1.1.1. Stenography

1.1.2. Cryptography

1.1.2.1. Transposition

1.1.2.2. Substitution

1.1.2.2.1. Simple

1.1.2.2.2. Complex

1.2. Implicit

1.2.1. Skip Cipher

1.2.2. Acrostic Cipher

1.2.3. Biform Cipher

1.2.4. Other

2. Material

2.1. Ink

2.2. Musical Notation

2.3. Surface

2.4. Other