Albert lost his key

Albert used the snake cipher to encrypt a secret phrase:

  
 [vsymgkf eb a2dajugmvl2ivgwgddr  ienq0zwkhszdadgzeq]
  

But he lost his encryption key. Can you find it for him?

Clues

1. You can look at the 📜 Snake key generator logs
2. These are relevant books from the library:
   1. 📕 Snake cipher
   2. 📕 Tobaud code