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Diffstat (limited to 'src/openvpn/crypto_openssl.c')
-rw-r--r--src/openvpn/crypto_openssl.c4
1 files changed, 2 insertions, 2 deletions
diff --git a/src/openvpn/crypto_openssl.c b/src/openvpn/crypto_openssl.c
index 4067701..348bdee 100644
--- a/src/openvpn/crypto_openssl.c
+++ b/src/openvpn/crypto_openssl.c
@@ -527,7 +527,7 @@ cipher_kt_mode (const EVP_CIPHER *cipher_kt)
bool
cipher_kt_mode_cbc(const cipher_kt_t *cipher)
{
- return cipher_kt_mode(cipher) == OPENVPN_MODE_CBC
+ return cipher && cipher_kt_mode(cipher) == OPENVPN_MODE_CBC
#ifdef EVP_CIPH_FLAG_AEAD_CIPHER
/* Exclude AEAD cipher modes, they require a different API */
&& !(EVP_CIPHER_flags(cipher) & EVP_CIPH_FLAG_AEAD_CIPHER)
@@ -538,7 +538,7 @@ cipher_kt_mode_cbc(const cipher_kt_t *cipher)
bool
cipher_kt_mode_ofb_cfb(const cipher_kt_t *cipher)
{
- return (cipher_kt_mode(cipher) == OPENVPN_MODE_OFB ||
+ return cipher && (cipher_kt_mode(cipher) == OPENVPN_MODE_OFB ||
cipher_kt_mode(cipher) == OPENVPN_MODE_CFB)
#ifdef EVP_CIPH_FLAG_AEAD_CIPHER
/* Exclude AEAD cipher modes, they require a different API */