prevent a malleability attack; this BREAKS THE PROTOCOL. Also change the library...

[xonotic/d0_blind_id.git] / d0_bignum.h

diff --git a/d0_bignum.h b/d0_bignum.h
index 26fafc3e56dfdbd47c3f93753b629e3d70045dd5..bccaee5256adf24c7752e73e94089bb0eb97712e 100644 (file)
--- a/d0_bignum.h
+++ b/d0_bignum.h
@@ -6,8 +6,10 @@
 
 typedef struct d0_bignum_s d0_bignum_t;
 
-WARN_UNUSED_RESULT BOOL d0_iobuf_write_bignum(d0_iobuf_t *buf, const d0_bignum_t *bignum);
+WARN_UNUSED_RESULT BOOL d0_iobuf_write_bignum(d0_iobuf_t *buf, const d0_bignum_t *bignum); // byte 0: 01=+ 11=- 00=0, rest = big endian number
 WARN_UNUSED_RESULT d0_bignum_t *d0_iobuf_read_bignum(d0_iobuf_t *buf, d0_bignum_t *bignum);
+WARN_UNUSED_RESULT ssize_t d0_bignum_export_unsigned(const d0_bignum_t *bignum, void *buf, size_t bufsize); // big endian, return value = number of significant bytes (or -1 on error)
+WARN_UNUSED_RESULT d0_bignum_t *d0_bignum_import_unsigned(d0_bignum_t *bignum, const void *buf, size_t bufsize);
 
 void d0_bignum_INITIALIZE(void);
 void d0_bignum_SHUTDOWN(void);