diff options
| author |   provos <provos@openbsd.org> | 1999-10-16 23:20:25 +0000 |
|---|---|---|
| committer | provos <provos@openbsd.org> | 1999-10-16 23:20:25 +0000 |
| commit | 8f1e804249a1a18e97c886129c777c788e5cbf01 (patch) | |
| tree | bd545cbfa7d1ab44730ea9e32e6d281105436252 | |
| parent | refuse to talk to protocol < 1.3 (diff) | |
| download | wireguard-openbsd-8f1e804249a1a18e97c886129c777c788e5cbf01.tar.xz wireguard-openbsd-8f1e804249a1a18e97c886129c777c788e5cbf01.zip | |
dont encrypt with public exponent < 3.
| -rw-r--r-- | usr.bin/ssh/rsa.c | 5 |
1 files changed, 4 insertions, 1 deletions
diff --git a/usr.bin/ssh/rsa.c b/usr.bin/ssh/rsa.c index ac219a5b4e3..246e75a174e 100644 --- a/usr.bin/ssh/rsa.c +++ b/usr.bin/ssh/rsa.c @@ -35,7 +35,7 @@ Description of the RSA algorithm can be found e.g. from the following sources: */ #include "includes.h" -RCSID("$Id: rsa.c,v 1.3 1999/09/29 18:16:20 dugsong Exp $"); +RCSID("$Id: rsa.c,v 1.4 1999/10/16 23:20:25 provos Exp $"); #include "rsa.h" #include "ssh.h" @@ -112,6 +112,9 @@ rsa_public_encrypt(BIGNUM *out, BIGNUM *in, RSA* key) char *inbuf, *outbuf; int len; + if (BN_num_bits(key->e) < 2) + fatal("rsa_public_encrypt() exponent too small"); + len = BN_num_bytes(key->n); outbuf = xmalloc(len); |