crypt.hmac - Real Function Reference

crypt.hmac(key: string, data: string, algorithm?: "sha256" | "sha1" | "sha224" | "sha384" | "sha512" | "md5"): string

Arguments

string

required

Raw Lua string bytes used as the HMAC key. The key is not Base64-decoded.

string

required

Lua string bytes passed into the HMAC calculation.

"sha256" | "sha1" | "sha224" | "sha384" | "sha512" | "md5"

Case-sensitive HMAC algorithm name. Defaults to sha256.

string

Base64-encoded HMAC output with no line breaks.

Compute a Base64 HMAC output from a raw Lua string key and data.

local key = "shared secret"
local data = "payload"
local digest = crypt.hmac(key, data, "sha256")

print(digest)