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DPP2: Replace OneAsymmetricKey version number (v2 to v1)

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DPP tech spec was modified to use v1(0) instead of v2(1) for the
OneAsymmetricKey in the Configurator backup structure to match the
description in RFC 5958 Section 2 which indicates v2 to be used when any
items tagged as version 2 are included. No such items are actually
included in this case, so v1 should be used instead.

Change OneAsymmetricKey generation to use v1(0) instead of v2(1) and
parsing to accept either version to be used. This is not backwards
compatible with the earlier implementation which requires v2(1) when
parsing the received value.

Signed-off-by: Jouni Malinen <jouni@codeaurora.org>
This commit is contained in:
Jouni Malinen 2020-10-07 01:04:48 +03:00 committed by Jouni Malinen
parent 8e5739c3ac
commit 88d3f43bd3
1 changed files with 2 additions and 2 deletions
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4
src/common/dpp_backup.c
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@ -189,7 +189,7 @@ static struct wpabuf * dpp_build_key_pkg(struct dpp_authentication *auth)
if (!key)
goto fail;
asn1_put_integer(key, 1); /* version = v2(1) */
asn1_put_integer(key, 0); /* version = v1(0) */
/* PrivateKeyAlgorithmIdentifier */
wpabuf_put_buf(key, alg);
@ -908,7 +908,7 @@ dpp_parse_one_asymmetric_key(const u8 *buf, size_t len)
/* Version ::= INTEGER { v1(0), v2(1) } (v1, ..., v2) */
if (asn1_get_integer(pos, end - pos, &val, &pos) < 0)
goto fail;
if (val != 1) {
if (val != 0 && val != 1) {
wpa_printf(MSG_DEBUG,
"DPP: Unsupported DPPAsymmetricKeyPackage version %d",
val);