pub type MD5_CTX = md5_state_st;
struct MD5_CTX { pub h: [u32; 4], pub Nl: u32, pub Nh: u32, pub data: [u8; 64], pub num: u32, }
h: [u32; 4]
Nl: u32
Nh: u32
data: [u8; 64]
num: u32