[pawsd] added signature fetching utils

1 files changed, 35 insertions, 0 deletions

diff --git a/src/pawsd/signature.lua b/src/pawsd/signature.lua
new file mode 100644
index 0000000..10714b7
--- /dev/null
+++ b/src/pawsd/signature.lua
@@ -0,0 +1,35 @@
+--
+-- ~~~ response signature utils
+--
+
+require("src/utils")
+
+-- get length of signature
+function getSignatureLength(response)
+
+    return tonumber(table.extracthex(response, 13, 14), 16)
+
+end
+
+-- get signature
+function getSignature(response)
+
+    local signatureIndexEnd = 14 + getSignatureLength(response)
+    return table.extracthex(response, 15, signatureIndexEnd)
+
+end
+
+-- validate signature
+function validateSignature(signature, key)
+
+    -- todo: this
+    return true
+
+end
+
+-- return
+return {
+    length = getSignatureLength,
+    get = getSignature,
+    validate = validateSignature
+}