c backend start at aes gcm

smurfd · Jul 12, 2024 · 0fe4a04 · 0fe4a04
1 parent 201352f
commit 0fe4a04
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Showing 4 changed files with 25 additions and 6 deletions.
diff --git a/lotordb/src/Makefile b/lotordb/src/Makefile
@@ -2,7 +2,7 @@ CL:=clang -O3 -Wall -pedantic
 CC:=clang -O3 -Wall -pedantic
 BUILD:=.build
 
-all: mkbuilddir db_keystore hash db_tables ciphers keys crypto crypto_server crypto_client client server test
+all: mkbuilddir db_keystore hash db_tables ciphers ciphers_aes_gcm keys crypto crypto_server crypto_client client server test
 
 mkbuilddir:
 	mkdir -p ${BUILD}
@@ -29,21 +29,27 @@ db_tables:
 ciphers:
 	${CL} -c ciphers.c -o ${BUILD}/ciphers.o
 
+ciphers_aes_gcm:
+	${CL} -c ciphers_aes_gcm.c -o ${BUILD}/ciphers_aes_gcm.o
+
 keys:
 	${CL} -c keys.c -o ${BUILD}/keys.o
 
 client:
 	${CL} -o ${BUILD}/client client.c ${BUILD}/crypto.o ${BUILD}/ciphers.o ${BUILD}/keys.o ${BUILD}/crypto_client.o\
-	  ${BUILD}/db_keystore.o ${BUILD}/db_tables.o ${BUILD}/hash_tooling.o ${BUILD}/hash.o -fuse-ld=lld -lpthread -lm
+	  ${BUILD}/db_keystore.o ${BUILD}/db_tables.o ${BUILD}/hash_tooling.o ${BUILD}/hash.o ${BUILD}/ciphers_aes_gcm.o\
+	   -fuse-ld=lld -lpthread -lm
 
 server:
 	${CL} -o ${BUILD}/server server.c ${BUILD}/crypto.o ${BUILD}/ciphers.o ${BUILD}/keys.o ${BUILD}/crypto_server.o\
-	  ${BUILD}/db_keystore.o ${BUILD}/db_tables.o ${BUILD}/hash_tooling.o ${BUILD}/hash.o -fuse-ld=lld -lpthread -lm
+	  ${BUILD}/db_keystore.o ${BUILD}/db_tables.o ${BUILD}/hash_tooling.o ${BUILD}/hash.o ${BUILD}/ciphers_aes_gcm.o\
+	   -fuse-ld=lld -lpthread -lm
 
 test:
 	make -Ctests
 	${BUILD}/tests
 
 clean:
 	rm ${BUILD}/crypto.o ${BUILD}/crypto_client.o ${BUILD}/crypto_server.o ${BUILD}/db_keystore.o ${BUILD}/db_tables.o\
-	  ${BUILD}/hash.o ${BUILD}/hash_tooling.o ${BUILD}/ciphers.o ${BUILD}/keys.o ${BUILD}/client ${BUILD}/server ${BUILD}/tests
+	  ${BUILD}/hash.o ${BUILD}/hash_tooling.o ${BUILD}/ciphers.o ${BUILD}/keys.o ${BUILD}/ciphers_aes_gcm.o\
+	   ${BUILD}/client ${BUILD}/server ${BUILD}/tests
diff --git a/lotordb/src/ciphers_aes_gcm.c b/lotordb/src/ciphers_aes_gcm.c
@@ -0,0 +1,7 @@
+#include "ciphers_aes_gcm.h"
+#include "ciphers.h"
+
+
+// AES GCM
+// https://nvlpubs.nist.gov/nistpubs/Legacy/SP/nistspecialpublication800-38d.pdf
+// https://csrc.nist.rip/groups/ST/toolkit/BCM/documents/proposedmodes/gcm/gcm-revised-spec.pdf
diff --git a/lotordb/src/ciphers_aes_gcm.h b/lotordb/src/ciphers_aes_gcm.h
@@ -0,0 +1,6 @@
+// Auth: smurfd 2024
+#ifndef CIPHERS_AES_GCM_H
+#define CIPHERS_AES_GCM_H 1
+#include <stdint.h>
+
+#endif
diff --git a/lotordb/src/keys.c b/lotordb/src/keys.c
@@ -154,7 +154,7 @@ static void omega_mul(u64 *a, const u64 *b) {
 static void mod_add(u64 *a, const u64 *b, const u64 *c, const u64 *m) {
   if (c[0] == 0 && c[1] == 0 && c[2] == 0 && c[3] == 0 && c[4] == 0 && c[5] == 0) set(a, b);
   else {
-    u64 r[DIGITS], rb[DIGITS];
+    u64 rb[DIGITS];
     sub(rb, m, c);
     if (compare(b, rb) >= 1) {
       sub(a, b, rb);
@@ -602,7 +602,7 @@ int keys_sign(const uint8_t priv[], const uint8_t hash[], uint8_t sign[], const
 // Verify signature
 int keys_vrfy(const uint8_t publ[], const uint8_t hash[], const uint8_t sign[]) {
   u64 u1[DIGITS] = {0}, u2[DIGITS] = {0}, tx[DIGITS] = {0}, ty[DIGITS] = {0}, tz[DIGITS] = {0};
-  u64 rx[DIGITS] = {0}, ry[DIGITS] = {0}, rz[DIGITS] = {0}, xx[DIGITS] = {0}, yy[DIGITS] = {0};
+  u64 rx[DIGITS] = {0}, ry[DIGITS] = {0}, rz[DIGITS] = {0};
   pt public, sum;
   // TODO: This verification fails "randomly"
   pt_decompress(&public, publ);