The Precomputation precomputation step is now done on batch level.

1 files changed, 36 insertions, 27 deletions

diff --git a/libcmix/cmix.c b/libcmix/cmix.c
index 149bc7d..9c983f0 100644
--- a/libcmix/cmix.c
+++ b/libcmix/cmix.c
@@ -138,41 +138,50 @@ enum cmix_error set_network_key(struct CMixContext* ctx, char const* buffer, siz
 	return no_error;
 }
 
-enum cmix_error encrypt_r(struct CMixContext const* ctx, char* random_buffer, char* message_buffer, size_t index) {
-	GroupElement random_element;
-	GroupElement message_element;
+enum cmix_error encrypt_r(struct CMixContext const* ctx, char** random_buffer, char** message_buffer, size_t nr_elements) {
 	
-	ctx->api.encrypt(&random_element, &message_element, ctx->r[index], ctx->network_key);
+	for(size_t i = 0; i < nr_elements; ++i) {
+		GroupElement random_element;
+		GroupElement message_element;
+	
+		ctx->api.encrypt(&random_element, &message_element, ctx->r[i], ctx->network_key);
 	
-	element_to_buffer(ctx, random_buffer, random_element);
-	element_to_buffer(ctx, message_buffer, message_element);
+		element_to_buffer(ctx, random_buffer[i], random_element);
+		element_to_buffer(ctx, message_buffer[i], message_element);
+		
+		ctx->api.free_group_element(random_element);
+		ctx->api.free_group_element(message_element);
+	}
 	
 	return no_error;
 }
 
-enum cmix_error encrypt_r_and_multiply(struct CMixContext const* ctx, char* random_buffer, char* message_buffer, const char* random_element, const char* message_element, size_t index) {
-	GroupElement enc_random_element;
-	GroupElement enc_message_element;
-	
-	ctx->api.encrypt(&enc_random_element, &enc_message_element, ctx->r[index], ctx->network_key);
-	
-	size_t el_size = get_group_element_array_size(ctx);
-	
-	GroupElement other_random_element = ctx->api.array_to_element(random_element, el_size, true);
-	GroupElement other_message_element = ctx->api.array_to_element(message_element, el_size, true);
+enum cmix_error encrypt_r_and_multiply(struct CMixContext const* ctx, char** random_buffer, char** message_buffer, const char** random_element, const char** message_element, size_t nr_elements) {
 	
-	GroupElement new_random_element = ctx->api.multiply(enc_random_element, other_random_element, true);
-	GroupElement new_message_element = ctx->api.multiply(enc_message_element, other_message_element, true);
-	
-	element_to_buffer(ctx, random_buffer, new_random_element);
-	element_to_buffer(ctx, message_buffer, new_message_element);
+	for(size_t i = 0; i < nr_elements; ++i) {
+		GroupElement enc_random_element;
+		GroupElement enc_message_element;
+		
+		ctx->api.encrypt(&enc_random_element, &enc_message_element, ctx->r[i], ctx->network_key);
+		
+		size_t el_size = get_group_element_array_size(ctx);
 		
-	ctx->api.free_group_element(enc_random_element);
-	ctx->api.free_group_element(enc_message_element);
-	ctx->api.free_group_element(other_random_element);
-	ctx->api.free_group_element(other_message_element);
-	ctx->api.free_group_element(new_random_element);
-	ctx->api.free_group_element(new_message_element);
+		GroupElement other_random_element = ctx->api.array_to_element(random_element[i], el_size, true);
+		GroupElement other_message_element = ctx->api.array_to_element(message_element[i], el_size, true);
+		
+		GroupElement new_random_element = ctx->api.multiply(enc_random_element, other_random_element, true);
+		GroupElement new_message_element = ctx->api.multiply(enc_message_element, other_message_element, true);
+		
+		element_to_buffer(ctx, random_buffer[i], new_random_element);
+		element_to_buffer(ctx, message_buffer[i], new_message_element);
+			
+		ctx->api.free_group_element(enc_random_element);
+		ctx->api.free_group_element(enc_message_element);
+		ctx->api.free_group_element(other_random_element);
+		ctx->api.free_group_element(other_message_element);
+		ctx->api.free_group_element(new_random_element);
+		ctx->api.free_group_element(new_message_element);
+	}
 	
 	return no_error;
 }