Function nginx::EVP_PKEY_meth_set_encrypt

pub unsafe extern "C" fn EVP_PKEY_meth_set_encrypt(
    pmeth: *mut EVP_PKEY_METHOD, 
    encrypt_init: Option<unsafe extern "C" fn(ctx: *mut EVP_PKEY_CTX) -> c_int>, 
    encryptfn: Option<unsafe extern "C" fn(ctx: *mut EVP_PKEY_CTX, out: *mut c_uchar, outlen: *mut size_t, in_: *const c_uchar, inlen: size_t) -> c_int>
)