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dh_cms_set_peerkey: Pad the public key to p size

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Reviewed-by: Matt Caswell <matt@openssl.org>
(Merged from https://github.com/openssl/openssl/pull/13958)
This commit is contained in:
Tomas Mraz 2021-01-25 19:12:43 +01:00
parent af403db090
commit 6a1a6498ac
1 changed files with 5 additions and 1 deletions
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6
crypto/cms/cms_dh.c
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@ -48,7 +48,11 @@ static int dh_cms_set_peerkey(EVP_PKEY_CTX *pctx,
if ((public_key = d2i_ASN1_INTEGER(NULL, &p, plen)) == NULL)
goto err;
plen = ASN1_STRING_length((ASN1_STRING *)public_key);
/*
* Pad to full p parameter size as that is checked by
* EVP_PKEY_set1_encoded_public_key()
*/
plen = EVP_PKEY_size(pk);
if ((bnpub = ASN1_INTEGER_to_BN(public_key, NULL)) == NULL)
goto err;
if ((buf = OPENSSL_malloc(plen)) == NULL)