diff options
Diffstat (limited to 'cipher/elgamal.c')
| -rw-r--r-- | cipher/elgamal.c | 12 |
1 files changed, 12 insertions, 0 deletions
diff --git a/cipher/elgamal.c b/cipher/elgamal.c index 4b9758628..bbf9c2782 100644 --- a/cipher/elgamal.c +++ b/cipher/elgamal.c @@ -459,6 +459,8 @@ elg_check_secret_key( int algo, MPI *skey ) if( !is_ELGAMAL(algo) ) return G10ERR_PUBKEY_ALGO; + if( !skey[0] || !skey[1] || !skey[2] || !skey[3] ) + return G10ERR_BAD_MPI; sk.p = skey[0]; sk.g = skey[1]; @@ -479,6 +481,8 @@ elg_encrypt( int algo, MPI *resarr, MPI data, MPI *pkey ) if( !is_ELGAMAL(algo) ) return G10ERR_PUBKEY_ALGO; + if( !data || !pkey[0] || !pkey[1] || !pkey[2] ) + return G10ERR_BAD_MPI; pk.p = pkey[0]; pk.g = pkey[1]; @@ -496,6 +500,9 @@ elg_decrypt( int algo, MPI *result, MPI *data, MPI *skey ) if( !is_ELGAMAL(algo) ) return G10ERR_PUBKEY_ALGO; + if( !data[0] || !data[1] + || !skey[0] || !skey[1] || !skey[2] || !skey[3] ) + return G10ERR_BAD_MPI; sk.p = skey[0]; sk.g = skey[1]; @@ -513,6 +520,8 @@ elg_sign( int algo, MPI *resarr, MPI data, MPI *skey ) if( !is_ELGAMAL(algo) ) return G10ERR_PUBKEY_ALGO; + if( !data || !skey[0] || !skey[1] || !skey[2] || !skey[3] ) + return G10ERR_BAD_MPI; sk.p = skey[0]; sk.g = skey[1]; @@ -532,6 +541,9 @@ elg_verify( int algo, MPI hash, MPI *data, MPI *pkey, if( !is_ELGAMAL(algo) ) return G10ERR_PUBKEY_ALGO; + if( !data[0] || !data[1] || !hash + || !pkey[0] || !pkey[1] || !pkey[2] ) + return G10ERR_BAD_MPI; pk.p = pkey[0]; pk.g = pkey[1]; |