Function olm_sys::olm_pk_key_from_private

pub unsafe extern "C" fn olm_pk_key_from_private(
    decryption: *mut OlmPkDecryption, 
    pubkey: *mut c_void, 
    pubkey_length: usize, 
    privkey: *const c_void, 
    privkey_length: usize
) -> usize

Initialise the key from the private part of a key as returned by olm_pk_get_private_key(). The associated public key will be written to the pubkey buffer. Returns olm_error() on failure. If the pubkey buffer is too small then olm_pk_decryption_last_error() will be “OUTPUT_BUFFER_TOO_SMALL”. If the private key was not long enough then olm_pk_decryption_last_error() will be “OLM_INPUT_BUFFER_TOO_SMALL”.

Note that the pubkey is a base64 encoded string, but the private key is an unencoded byte array