Generate detached signature

Generating private key

To generate a shared key-pair we have to call torchbear's crypto.sign.new_keypair() function. To do so, create a file named init.lua and add this:

local sign_priv, sign_pub = crypto.sign.new_keypair()
local file = io.open("private_key", "w")
local file2 = io.open("public_key", "w")
file:write(tostring(sign_priv), "\n")
file2:write(tostring(sign_pub), "\n")

Creating the signature file from binary file

To create a signature file, we have to first set some environment variables, here's the list:

PROJECT     = name of project
TRAVIS_TAG  = release tag
ARCH        = architecture
PLATFORM    = x86/arm/...
CHANNEL     = stable/beta

After setting them, we will have to run torchbear binary in the directory where we have private_key and init.lua.

This should create the .sig file with following name format: ${PROJECT}-${TRAVIS_TAG}-${ARCH}-${PLATFORM}-${CHANNEL}.sig

Credits

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