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EVP_PKEY_asn1_add0(): Check that this method isn't already registered 

No two public key ASN.1 methods with the same pkey_id can be
registered at the same time.

Reviewed-by: Bernd Edlinger <bernd.edlinger@hotmail.de>
(Merged from https://github.com/openssl/openssl/pull/4596)
This commit is contained in:
Richard Levitte 2017-10-27 22:42:04 +02:00
parent 751148e2b0
commit d85722d31a
1 changed files with 5 additions and 0 deletions
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5
crypto/asn1/ameth_lib.c
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@ -137,6 +137,11 @@ const EVP_PKEY_ASN1_METHOD *EVP_PKEY_asn1_find_str(ENGINE **pe,
int EVP_PKEY_asn1_add0(const EVP_PKEY_ASN1_METHOD *ameth) int EVP_PKEY_asn1_add0(const EVP_PKEY_ASN1_METHOD *ameth)
{ {
if (pkey_asn1_find(ameth->pkey_id) != NULL) {
EVPerr(EVP_F_EVP_PKEY_ASN1_ADD0,
EVP_R_PKEY_ASN1_METHOD_ALREADY_REGISTERED);
return 0;
}
if (app_methods == NULL) { if (app_methods == NULL) {
app_methods = sk_EVP_PKEY_ASN1_METHOD_new(ameth_cmp); app_methods = sk_EVP_PKEY_ASN1_METHOD_new(ameth_cmp);
if (app_methods == NULL) if (app_methods == NULL)