[Plugin API] Add functions for commonly used hash sums (MD5, SHA1, SHA256/512, Blake2)

Author: dmbaturin

src/helpers/hash.ml

@@ -7,5 +7,27 @@ let blake2s s =
   let ctx = Digestif.BLAKE2S.feed_string ctx s in
   Digestif.BLAKE2S.get ctx |> Digestif.BLAKE2S.to_hex
 
+let blake2b s =
+  let ctx = Digestif.BLAKE2B.empty in
+  let ctx = Digestif.BLAKE2B.feed_string ctx s in
+  Digestif.BLAKE2B.get ctx |> Digestif.BLAKE2B.to_hex
 
+let md5 s =
+  let ctx = Digestif.MD5.empty in
+  let ctx = Digestif.MD5.feed_string ctx s in
+  Digestif.MD5.get ctx |> Digestif.MD5.to_hex
 
+let sha1 s =
+  let ctx = Digestif.SHA1.empty in
+  let ctx = Digestif.SHA1.feed_string ctx s in
+  Digestif.SHA1.get ctx |> Digestif.SHA1.to_hex
+
+let sha256 s =
+  let ctx = Digestif.SHA256.empty in
+  let ctx = Digestif.SHA256.feed_string ctx s in
+  Digestif.SHA256.get ctx |> Digestif.SHA256.to_hex
+
+let sha512 s =
+  let ctx = Digestif.SHA512.empty in
+  let ctx = Digestif.SHA512.feed_string ctx s in
+  Digestif.SHA512.get ctx |> Digestif.SHA512.to_hex

src/plugin_api.ml

@@ -1004,6 +1004,15 @@ struct
       "to_list_of_tables", V.efunc (V.list (V.list V.string) **->> V.list V.value) csv_to_table_list;
     ] g;
 
+    C.register_module "Digest" [
+      "md5", V.efunc (V.string **->> V.string) Hash.md5;
+      "sha1", V.efunc (V.string **->> V.string) Hash.sha1;
+      "sha256", V.efunc (V.string **->> V.string) Hash.sha256;
+      "sha512", V.efunc (V.string **->> V.string) Hash.sha512;
+      "blake2s", V.efunc (V.string **->> V.string) Hash.blake2s;
+      "blake2b", V.efunc (V.string **->> V.string) Hash.blake2b;
+    ] g;
+
     C.register_module "Date" [
       "reformat", V.efunc (V.string **-> V.list V.string **-> V.string **->> V.option V.string) reformat_date;
       "to_timestamp", V.efunc (V.string **-> V.list V.string **->> V.option V.int) to_timestamp;