sha384_process
ret = sha384_process(ctx, ctx->sha384_buffer); EG(ret, err);
ret = sha384_process(ctx, data_ptr); EG(ret, err);
ret = sha384_process(ctx, last_padded_block); EG(ret, err);
ret = sha384_process(ctx, last_padded_block + SHA384_BLOCK_SIZE); EG(ret, err);
ret = sha384_process(ctx, last_padded_block); EG(ret, err);