yuzu-emu/mbedtls
2
0
Fork 0
Code Issues Pull requests Projects Releases Packages Wiki Activity

Fix off-by-one error in ecdsa_write_signature()

Browse source 
Made some signature fail with 521-bit curve
This commit is contained in:
Manuel Pégourié-Gonnard 2013-09-02 16:25:37 +02:00
parent e09d2f8261
commit c75c56fef7
1 changed files with 2 additions and 2 deletions
Show stats Download patch file Download diff file Expand all files Collapse all files

4
library/ecdsa.c
View file

@ -220,8 +220,8 @@ int ecdsa_write_signature( ecdsa_context *ctx,
void *p_rng )
{
int ret;
unsigned char buf[MAX_SIG_LEN];
unsigned char *p = buf + MAX_SIG_LEN - 1;
unsigned char buf[MAX_SIG_LEN + 3];
unsigned char *p = buf + MAX_SIG_LEN;
size_t len = 0;
if( ( ret = ecdsa_sign( &ctx->grp, &ctx->r, &ctx->s, &ctx->d,