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-rw-r--r--cipher/primegen.c5
1 files changed, 4 insertions, 1 deletions
diff --git a/cipher/primegen.c b/cipher/primegen.c
index 1f3095751..f7e97108a 100644
--- a/cipher/primegen.c
+++ b/cipher/primegen.c
@@ -292,7 +292,7 @@ generate_elg_prime( int mode, unsigned pbits, unsigned qbits,
static MPI
-gen_prime( unsigned nbits, int secret, int randomlevel )
+gen_prime( unsigned int nbits, int secret, int randomlevel )
{
unsigned nlimbs;
MPI prime, ptest, pminus1, val_2, val_3, result;
@@ -304,6 +304,9 @@ gen_prime( unsigned nbits, int secret, int randomlevel )
if( 0 && DBG_CIPHER )
log_debug("generate a prime of %u bits ", nbits );
+ if (!nbits)
+ log_fatal ("trying to generate a prime of zero bits\n");
+
if( !no_of_small_prime_numbers ) {
for(i=0; small_prime_numbers[i]; i++ )
no_of_small_prime_numbers++;