Function olm_sys::olm_sha256

pub unsafe extern "C" fn olm_sha256(
    utility: *mut OlmUtility, 
    input: *const c_void, 
    input_length: usize, 
    output: *mut c_void, 
    output_length: usize
) -> usize

Calculates the SHA-256 hash of the input and encodes it as base64. If the output buffer is smaller than olm_sha256_length() then olm_utility_last_error() will be "OUTPUT_BUFFER_TOO_SMALL".