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disable deterministic ecdsa for fips builds

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FIPS 186-5 [1] allows the usage deterministic ECDSA (Section 6.3) which
is compabile with RFC 6979 [2] but OpenSSL seems to follow FIPS 186-4
(Section 6.3) [3] which only allows for random k values, failing
k value generation for OpenSSL >=3.2. [4]

Fix signing by not using deterministic ECDSA when FIPS mode is active.

[1]: https://nvlpubs.nist.gov/nistpubs/FIPS/NIST.FIPS.186-5.pdf
[2]: https://datatracker.ietf.org/doc/html/rfc6979
[3]: https://nvlpubs.nist.gov/nistpubs/FIPS/NIST.FIPS.186-4.pdf
[4]: 85f17585b0/crypto/ec/ecdsa_ossl.c (L201-L207)
This commit is contained in:
Aydın Mercan
2024-12-04 13:11:45 +03:00
committed by Michal Nowak
parent 6306031409
commit 8d093a6b66
2 changed files with 13 additions and 4 deletions
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7
tests/dns/dst_test.c
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@@ -31,6 +31,7 @@
#include <cmocka.h>
#include <isc/file.h>
#include <isc/fips.h>
#include <isc/hex.h>
#include <isc/result.h>
#include <isc/stdio.h>
@@ -467,7 +468,11 @@ ISC_RUN_TEST_IMPL(ecdsa_determinism_test) {
dst_context_destroy(&ctx);
#if OPENSSL_VERSION_NUMBER >= 0x30200000L
assert_memory_equal(sigbuf1->base, sigbuf2->base, siglen);
if (isc_fips_mode()) {
assert_memory_not_equal(sigbuf1->base, sigbuf2->base, siglen);
} else {
assert_memory_equal(sigbuf1->base, sigbuf2->base, siglen);
}
#else
assert_memory_not_equal(sigbuf1->base, sigbuf2->base, siglen);
#endif