Поиска алгоритма кодирования строк в Android приложении

Имеются следующие входные данные

Зашифрованная строка:

-37,-127,31,-35,21,33,-57,-47,-33,108,-78,-91,113,42,50,-9,-5,10,-62,-79,-81,87,-78,61,-35,-78,-105,-45,67,
67,-73,117,31,122,58,-109,94,-9,-68,114,-38,110,76,-33,-71,-11,-8,38,-32,-30,-67,55,53,-11,57,96,9,-120,
-124,124,3,-76,59,-107,99,5,-6,-69,-83,-90,-91,-90,107,15,57,-102,19,-118,-79,29,109,-72,62,-2,-76,-44,-53,
110,23,116,-4,-55,-45,-95,52,-3,22,-124,-5,-23,-93,-2,108,124,-19,-58,36,50,-66,-81,-62,70,-102,31,-91,35,
-28,-29,-72,13,-41,74,94,120,-2,-122,-75,96,-106,13,18,-74,74,15,-79,-106,95,-90,56,120,10,-77,125,38,
-103,-61,81,123,-41,-105,-33,56,64,-25,-67,25,0,105,-73,-111,-41,-41,18,-7,-5,54,-7,-95,41,67,104,-76,20,
-12,-12,-1,-105,-14,-122,86,-8,-28,-125,27,35,-41,29,-26,-54,-37,-100,13,-12,49,53,16,-4,-6,-67,12,-6

Исходная строка:

123,34,99,111,100,101,34,58,50,48,48,44,34,115,116,97,116,117,115,34,58,50,48,48,44,34,109,115,103,
34,58,34,-26,-120,-112,-27,-118,-97,34,44,34,101,114,114,111,114,115,34,58,110,117,108,108,44,34,100,
97,116,97,34,58,110,117,108,108,44,34,116,105,109,101,115,116,97,109,112,34,58,49,54,55,49,56,50,52,
57,51,55,44,34,116,114,97,99,101,73,100,34,58,34,106,97,101,103,101,114,58,32,98,53,54,51,99,55,50,
102,48,54,102,53,98,55,53,55,44,32,111,116,101,108,58,32,48,97,101,101,50,100,99,98,54,51,97,54,48,
54,50,57,48,48,54,49,99,49,52,102,50,55,99,54,54,55,100,99,34,125

Используется нативная функция .so библиотеки из Android-приложения

Нужно найти алгоритм кодирования/декодирования. Оплата по факту. Телеграм @anatoliy_pus

P.S. пока что исполнитель найден.