diff options
Diffstat (limited to 'cipher/rsa.c')
| -rw-r--r-- | cipher/rsa.c | 13 |
1 files changed, 12 insertions, 1 deletions
diff --git a/cipher/rsa.c b/cipher/rsa.c index c4d5161cf..5efab1d6f 100644 --- a/cipher/rsa.c +++ b/cipher/rsa.c @@ -452,6 +452,9 @@ int rsa_sign( int algo, MPI *resarr, MPI data, MPI *skey ) { RSA_secret_key sk; + RSA_public_key pk; + MPI cres; + int rc; if( algo != 1 && algo != 3 ) return G10ERR_PUBKEY_ALGO; @@ -465,7 +468,15 @@ rsa_sign( int algo, MPI *resarr, MPI data, MPI *skey ) resarr[0] = mpi_alloc( mpi_get_nlimbs( sk.n ) ); secret( resarr[0], data, &sk ); - return 0; + /* Check for a failure in secret(). */ + cres = mpi_alloc ( mpi_nlimb_hint_from_nbits (160) ); + pk.n = sk.n; + pk.e = sk.e; + public (cres, resarr[0], &pk); + rc = mpi_cmp (cres, data)? G10ERR_BAD_SIGN : 0; + mpi_free (cres); + + return rc; } int |