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-rw-r--r--crypto/pem/pem_pkey.c8
1 files changed, 7 insertions, 1 deletions
diff --git a/crypto/pem/pem_pkey.c b/crypto/pem/pem_pkey.c
index e58cdf4a3e0b..4a9492724487 100644
--- a/crypto/pem/pem_pkey.c
+++ b/crypto/pem/pem_pkey.c
@@ -1,5 +1,5 @@
/*
- * Copyright 1995-2018 The OpenSSL Project Authors. All Rights Reserved.
+ * Copyright 1995-2020 The OpenSSL Project Authors. All Rights Reserved.
*
* Licensed under the OpenSSL license (the "License"). You may not use
* this file except in compliance with the License. You can obtain a copy
@@ -108,6 +108,12 @@ int PEM_write_bio_PrivateKey_traditional(BIO *bp, EVP_PKEY *x,
pem_password_cb *cb, void *u)
{
char pem_str[80];
+
+ if (x->ameth == NULL || x->ameth->old_priv_encode == NULL) {
+ PEMerr(PEM_F_PEM_WRITE_BIO_PRIVATEKEY_TRADITIONAL,
+ PEM_R_UNSUPPORTED_PUBLIC_KEY_TYPE);
+ return 0;
+ }
BIO_snprintf(pem_str, 80, "%s PRIVATE KEY", x->ameth->pem_str);
return PEM_ASN1_write_bio((i2d_of_void *)i2d_PrivateKey,
pem_str, bp, x, enc, kstr, klen, cb, u);