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EVP: Downgrade EVP_PKEYs in EVP_PKEY2PKCS8()

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EVP_PKEY2PKCS8() relies on the presence of an EVP_PKEY_ASN1_METHOD,
which requires "downgrading" the EVP_PKEY to have a legacy internal
key.

Reviewed-by: Matt Caswell <matt@openssl.org>
(Merged from https://github.com/openssl/openssl/pull/12587)
This commit is contained in:
Richard Levitte 2020-08-02 16:41:04 +02:00
parent 7620d89c3f
commit b527564884
1 changed files with 5 additions and 0 deletions
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5
crypto/evp/evp_pkey.c
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@ -77,6 +77,11 @@ PKCS8_PRIV_KEY_INFO *EVP_PKEY2PKCS8(const EVP_PKEY *pkey)
return NULL;
}
/* Force a key downgrade if that's possible */
/* TODO(3.0) Is there a better way for provider-native keys? */
if (EVP_PKEY_get0(pkey) == NULL)
return NULL;
if (pkey->ameth) {
if (pkey->ameth->priv_encode) {
if (!pkey->ameth->priv_encode(p8, pkey)) {