Chapter Two: Signing with FROST

The Zcash Foundation has created one of the most advanced developer resources for FROST. They've published a set of Rust crates implementing FROST with a variety of ciphersuites as well as a set of CLI tools.

This chapter details how to use the ZF FROST command-line tools to create FROST secret shares and to sign with them using the basic Trusted Dealer methodology.

Objectives for this Chapter

After working through this chapter, a reader will be able to:

• Create TDG FROST Secret Shares
• Use FROST Secret Shares for Signing
• Check FROST Signatures

Supporting objectives include the ability to:

• Understand the Communication Process for FROST Signing

Table of Contents

• Section One: Installing the FROST Tools
• Section Two: Creating Trusted Dealer Shares with TDG
• Section Three: Creating a FROST Signature
• Section Four: Checking a FROST Signature