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Import release 0.1.5
[secnet]
/
rsa.c
diff --git
a/rsa.c
b/rsa.c
index
03318ba
..
81fb1b5
100644
(file)
--- a/
rsa.c
+++ b/
rsa.c
@@
-62,6
+62,10
@@
static string_t rsa_sign(void *sst, uint8_t *data, uint32_t datalen)
msize=mpz_sizeinbase(&st->n, 16);
msize=mpz_sizeinbase(&st->n, 16);
+ if (datalen*2+4>=msize) {
+ fatal("rsa_sign: message too big\n");
+ }
+
strcpy(buff,"0001");
for (i=0; i<datalen; i++) {
strcpy(buff,"0001");
for (i=0; i<datalen; i++) {
@@
-69,7
+73,7
@@
static string_t rsa_sign(void *sst, uint8_t *data, uint32_t datalen)
buff[5+i*2]=hexchars[data[i]&0xf];
}
buff[4+datalen*2]=0;
buff[5+i*2]=hexchars[data[i]&0xf];
}
buff[4+datalen*2]=0;
-
+
for (i=datalen*2+4; i<msize; i++)
buff[i]='f';
for (i=datalen*2+4; i<msize; i++)
buff[i]='f';