0x Series

1. Monoalphabetical Substitution Cipher (trial and error)

   Flag: documents

2. Vigenere Cipher (trial and error)

   Flag: zurich

3. Railfence Cipher (freq anal)

   Flag: ANUALLEAVE

4. Columnar Transposition Cipher (freq analysis, x's at end for padding)

   Flag: CONCERNEDENCRYPTED

5. Bifid Cipher (lack of j hinted at grid cipher, cant be playfair because of doubles)

   Key: ReallyAwesome

   Flag: Campbell

6. Periodic Gromark Cipher (number key, nothing else given)

   Key: agency

   Flag: organization