Who is the keeper of the secrets of the Messenger of Allah, may Allah bless him and grant him peace?

The keeper of the Prophet's secrets, peace and blessings be upon him, was Hudhayfah ibn al-Yaman, may Allah be pleased with him. It was narrated from Abu Hurayrah that he said to Khaythama: "And Hudhayfah was his confidant." And from Abu al-Darda' that he said to 'Alqama: "Is there not among you the keeper of the Prophet's secret, peace and blessings be upon him, which no one else knows?" Al-Hafiz Ibn Hajar clarified that the intended secret was what the Prophet, peace and blessings be upon him, informed him about the affairs of the hypocrites.