diff options
Diffstat (limited to 'cipher/elgamal.c')
| -rw-r--r-- | cipher/elgamal.c | 5 |
1 files changed, 4 insertions, 1 deletions
diff --git a/cipher/elgamal.c b/cipher/elgamal.c index 3645e7d5..a71a9bcb 100644 --- a/cipher/elgamal.c +++ b/cipher/elgamal.c @@ -497,10 +497,13 @@ do_encrypt(gcry_mpi_t a, gcry_mpi_t b, gcry_mpi_t input, ELG_public_key *pkey ) static void -decrypt(gcry_mpi_t output, gcry_mpi_t a, gcry_mpi_t b, ELG_secret_key *skey ) +decrypt (gcry_mpi_t output, gcry_mpi_t a, gcry_mpi_t b, ELG_secret_key *skey ) { gcry_mpi_t t1 = mpi_alloc_secure( mpi_get_nlimbs( skey->p ) ); + mpi_normalize (a); + mpi_normalize (b); + /* output = b/(a^x) mod p */ mpi_powm( t1, a, skey->x, skey->p ); mpi_invm( t1, t1, skey->p ); |