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author | Daniel Baumann <daniel.baumann@progress-linux.org> | 2024-04-07 15:59:48 +0000 |
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committer | Daniel Baumann <daniel.baumann@progress-linux.org> | 2024-04-07 15:59:48 +0000 |
commit | 3b9b6d0b8e7f798023c9d109c490449d528fde80 (patch) | |
tree | 2e1c188dd7b8d7475cd163de9ae02c428343669b /bin/tests/system/rsabigexponent/README.md | |
parent | Initial commit. (diff) | |
download | bind9-0cd617f6bad00b68e380aeb0024ef4dc1985191c.tar.xz bind9-0cd617f6bad00b68e380aeb0024ef4dc1985191c.zip |
Adding upstream version 1:9.18.19.upstream/1%9.18.19upstream
Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>
Diffstat (limited to '')
-rw-r--r-- | bin/tests/system/rsabigexponent/README.md | 39 |
1 files changed, 39 insertions, 0 deletions
diff --git a/bin/tests/system/rsabigexponent/README.md b/bin/tests/system/rsabigexponent/README.md new file mode 100644 index 0000000..44afdbd --- /dev/null +++ b/bin/tests/system/rsabigexponent/README.md @@ -0,0 +1,39 @@ +Copyright (C) Internet Systems Consortium, Inc. ("ISC") + +SPDX-License-Identifier: MPL-2.0 + +This Source Code Form is subject to the terms of the Mozilla Public +License, v. 2.0. If a copy of the MPL was not distributed with this +file, you can obtain one at https://mozilla.org/MPL/2.0/. + +See the COPYRIGHT file distributed with this work for additional +information regarding copyright ownership. + +The `rsabigexponent` test is used to `check max-rsa-exponent-size`. + +We only run this test on builds without PKCS#11, as we have control over +the RSA exponent size with plain OpenSSL. We have not explored how to do +this with PKCS#11, which would require generating such a key and then +signing a zone with it. Additionally, even with control of the exponent +size with PKCS#11, generating a DNSKEY with this property and signing +such a zone would be slow and undesirable for each test run; instead, we +use a pregenerated DNSKEY and a saved signed zone. These are located in +`rsabigexponent/ns2` and currently use RSASHA1 for the `DNSKEY` +algorithm; however, that may need to be changed in the future. + +To generate the `DNSKEY` used in this test, we used `bigkey.c`, as +dnssec-keygen is not capable of generating such keys. + +Do **not** remove `bigkey.c` as it may be needed to generate a new +`DNSKEY` for testing purposes. + +`bigkey` is used to both test that we are not running under PKCS#11 and +generate a `DNSKEY` key with a large RSA exponent. + +To regenerate `ns2/example.db.bad` comment out the range test in +opensslrsa_parse before signing the zone with a ZSK key generated +by `bigkey`. + + if (BN_num_bits(e) > RSA_MAX_PUBEXP_BITS) { + DST_RET(ISC_R_RANGE); + } |