The original fragments, dated February 23rd 1995, are available on-line. In the meanwhile, I have revised the fragments, adding material, correcting mistakes and restructuring the material a bit. The current revised version (No. 2.03) is also available on-line. The revised version uses a different numbering of theorems and such.
The main additions in the revision are
You may obtain the corresponding revised parts from this page [Part 1 (Introduction)] [Part 2 (One-Way Functions)] [Part 3 (Pseudorandomness)] [Part 4 (Zero-Knowledge)] [Part 5 (Encryption)] [Part 6 (old file of references)]