diff options
author | Richard Levitte <levitte@openssl.org> | 2020-08-27 07:18:55 +0200 |
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committer | Richard Levitte <levitte@openssl.org> | 2020-08-28 20:48:27 +0200 |
commit | 87d91d223b869855c11f51b54541ba8139d30d8e (patch) | |
tree | 10219efed302ad89f237e9fa8f3b2897d054dc14 /crypto/pem/pem_pkey.c | |
parent | b6ef3c7089e887427cde8c550e28211dc0c22dd1 (diff) |
Fix PEM_write_bio_PrivateKey_traditional() to not output PKCS#8
PEM_write_bio_PrivateKey_traditional() uses i2d_PrivateKey() to do the
actual encoding to DER. However, i2d_PrivateKey() is a generic
function that will do what it can to produce output according to what
the associated EVP_PKEY_ASN1_METHOD offers. If that method offers a
function 'old_priv_encode', which is expected to produce the
"traditional" encoded form, then i2d_PrivateKey() uses that. If not,
i2d_PrivateKey() will go on and used more modern methods, which are
all expected to produce PKCS#8.
To ensure that PEM_write_bio_PrivateKey_traditional() never produces
more modern encoded forms, an extra check that 'old_priv_encode' is
non-NULL is added. If it is NULL, an error is returned.
Reviewed-by: Tomas Mraz <tmraz@fedoraproject.org>
(Merged from https://github.com/openssl/openssl/pull/12728)
Diffstat (limited to 'crypto/pem/pem_pkey.c')
-rw-r--r-- | crypto/pem/pem_pkey.c | 5 |
1 files changed, 5 insertions, 0 deletions
diff --git a/crypto/pem/pem_pkey.c b/crypto/pem/pem_pkey.c index e355afe5f9..8aee82ea80 100644 --- a/crypto/pem/pem_pkey.c +++ b/crypto/pem/pem_pkey.c @@ -166,6 +166,11 @@ int PEM_write_bio_PrivateKey_traditional(BIO *bp, const EVP_PKEY *x, pem_password_cb *cb, void *u) { char pem_str[80]; + + if (x->ameth == NULL || x->ameth->old_priv_encode == NULL) { + ERR_raise(ERR_LIB_PEM, 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); |