diff options
Diffstat (limited to 'libcmix')
| -rw-r--r-- | libcmix/cmix.c | 23 |
1 files changed, 15 insertions, 8 deletions
diff --git a/libcmix/cmix.c b/libcmix/cmix.c index 4465011..9db4dbb 100644 --- a/libcmix/cmix.c +++ b/libcmix/cmix.c @@ -268,31 +268,38 @@ enum cmix_error post_process(struct CMixContext* ctx, char* r_out, char* m_out, GroupElement msg = ctx->api.array_to_element(m_epirs, get_group_element_array_size(ctx), true); GroupElement pirs = ctx->api.multiply(D, msg, true); element_to_buffer(ctx, m_out, pirs); - GroupElement new_r = ctx->api.multiply(x, D, true); - element_to_buffer(ctx, r_out, new_r); + //GroupElement new_r = ctx->api.multiply(x, D, true); + //element_to_buffer(ctx, r_out, new_r); + + memcpy(r_out, r_epirs, get_group_element_array_size(ctx)); ctx->pirs[index] = pirs; // this is not always usable as only the last node will be able to use this effectively, but we store it anyways. ctx->api.free_group_element(x); ctx->api.free_group_element(D); ctx->api.free_group_element(msg); - ctx->api.free_group_element(new_r); + //ctx->api.free_group_element(new_r); return no_error; } enum cmix_error blind_message(struct CMixContext const* ctx, char* m_out, char const* message, GroupElement const* keys, size_t const nr_nodes) { - size_t len = get_group_element_array_size(ctx); + size_t len = get_group_element_array_size(ctx); + + GroupElement* intermediates = (GroupElement*) calloc(nr_nodes + 1, sizeof(GroupElement)); - GroupElement mes = ctx->api.array_to_element(message, len, true); + intermediates[0] = ctx->api.array_to_element(message, len, true); for(size_t i = 0; i < nr_nodes; ++i) { - ctx->api.multiply(mes, mes, keys[i]); + intermediates[i+1] = ctx->api.multiply(intermediates[i], keys[i], false); } - element_to_buffer(ctx, m_out, mes); + element_to_buffer(ctx, m_out, intermediates[nr_nodes]); - ctx->api.free_group_element(mes); + for(size_t i = 0; i < nr_nodes + 1; ++i) { + ctx->api.free_group_element(intermediates[i]); + } + free(intermediates); return no_error; } |