diff options
| -rw-r--r-- | src/pki_crypto.c | 8 |
1 files changed, 7 insertions, 1 deletions
diff --git a/src/pki_crypto.c b/src/pki_crypto.c index ccf05f43..442c1b38 100644 --- a/src/pki_crypto.c +++ b/src/pki_crypto.c @@ -1233,9 +1233,15 @@ static ssh_signature pki_signature_from_rsa_blob(const ssh_key pubkey, char *blob_padded_data; ssh_string sig_blob_padded; + size_t rsalen = 0; size_t len = ssh_string_len(sig_blob); - size_t rsalen= RSA_size(pubkey->rsa); + if (pubkey->rsa == NULL) { + ssh_pki_log("Pubkey RSA field NULL"); + goto errout; + } + + rsalen = RSA_size(pubkey->rsa); if (len > rsalen) { ssh_pki_log("Signature is too big: %lu > %lu", (unsigned long)len, (unsigned long)rsalen); |