pgmoon.crypto digest_sha256 to support resty.openssl (and resty.string)

Author: bungle

pgmoon/crypto.lua

@@ -53,10 +53,34 @@ else
   end
 end
 local digest_sha256
-digest_sha256 = function(str)
-  local digest = assert(require("openssl.digest").new("sha256"))
-  digest:update(str)
-  return assert(digest:final())
+if pcall(function()
+  return require("openssl.digest")
+end) then
+  digest_sha256 = function(str)
+    local digest = assert(require("openssl.digest").new("sha256"))
+    digest:update(str)
+    return assert(digest:final())
+  end
+elseif pcall(function()
+  return require("resty.sha256")
+end) then
+  digest_sha256 = function(str)
+    local digest = assert(require("resty.sha256"):new())
+    digest:update(str)
+    return assert(digest:final())
+  end
+elseif pcall(function()
+  return require("resty.openssl.digest")
+end) then
+  digest_sha256 = function(str)
+    local digest = assert(require("resty.openssl.digest").new("sha256"))
+    digest:update(str)
+    return assert(digest:final())
+  end
+else
+  digest_sha256 = function()
+    return error("Either luaossl or resty.openssl is required to calculate sha256 digest")
+  end
 end
 local kdf_derive_sha256
 if pcall(function()

pgmoon/crypto.moon

@@ -32,10 +32,23 @@ else
   -> error "Either luaossl or resty.openssl is required to calculate hmac sha256 digest"
 
 
-digest_sha256 = (str) ->
-  digest = assert require("openssl.digest").new("sha256")
-  digest\update str
-  assert digest\final!
+digest_sha256 = if pcall -> require "openssl.digest"
+  (str) ->
+    digest = assert require("openssl.digest").new("sha256")
+    digest\update str
+    assert digest\final!
+elseif pcall -> require "resty.sha256"
+  (str) ->
+    digest = assert require("resty.sha256")\new()
+    digest\update str
+    assert digest\final!
+elseif pcall -> require "resty.openssl.digest"
+  (str) ->
+    digest = assert require("resty.openssl.digest").new("sha256")
+    digest\update str
+    assert digest\final!
+else
+  -> error "Either luaossl or resty.openssl is required to calculate sha256 digest"
 
 
 kdf_derive_sha256 = if pcall -> require "openssl.kdf"