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83 lines
3.6 KiB
83 lines
3.6 KiB
From 56090fca0a0c8b6cf1782aced0a02349358aae7d Mon Sep 17 00:00:00 2001
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From: Clemens Lang <cllang@redhat.com>
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Date: Fri, 3 Mar 2023 12:22:03 +0100
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Subject: [PATCH 1/2] fips: Use salt >= 16 bytes in PBKDF2 selftest
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NIST SP 800-132 [1] section 5.1 says "[t]he length of the
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randomly-generated portion of the salt shall be at least
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128 bits", which implies that the salt for PBKDF2 must be at least 16
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bytes long (see also Appendix A.2.1).
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The FIPS 140-3 IG [2] section 10.3.A requires that "the lengths and the
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properties of the Password and Salt parameters, as well as the desired
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length of the Master Key used in a CAST shall be among those supported
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by the module in the approved mode."
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As a consequence, the salt length in the self test must be at least 16
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bytes long for FIPS 140-3 compliance. Switch the self test to use the
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only test vector from RFC 6070 that uses salt that is long enough to
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fulfil this requirement. Since RFC 6070 does not provide expected
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results for PBKDF2 with HMAC-SHA256, use the output from [3], which was
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generated with python cryptography, which was tested against the RFC
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6070 vectors with HMAC-SHA1.
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[1]: https://doi.org/10.6028/NIST.SP.800-132
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[2]: https://csrc.nist.gov/CSRC/media/Projects/cryptographic-module-validation-program/documents/fips%20140-3/FIPS%20140-3%20IG.pdf
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[3]: https://github.com/brycx/Test-Vector-Generation/blob/master/PBKDF2/pbkdf2-hmac-sha2-test-vectors.md
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Signed-off-by: Clemens Lang <cllang@redhat.com>
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Reviewed-by: Paul Dale <pauli@openssl.org>
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Reviewed-by: Dmitry Belyavskiy <beldmit@gmail.com>
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Reviewed-by: Tomas Mraz <tomas@openssl.org>
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(Merged from https://github.com/openssl/openssl/pull/20429)
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(cherry picked from commit 451cb23c41c90d5a02902b3a77551aa9ee1c6956)
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---
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providers/fips/self_test_data.inc | 22 ++++++++++++++++------
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1 file changed, 16 insertions(+), 6 deletions(-)
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diff --git a/providers/fips/self_test_data.inc b/providers/fips/self_test_data.inc
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index 8ae8cd6f4a..03adf28f3c 100644
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--- a/providers/fips/self_test_data.inc
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+++ b/providers/fips/self_test_data.inc
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@@ -361,19 +361,29 @@ static const ST_KAT_PARAM x963kdf_params[] = {
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};
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static const char pbkdf2_digest[] = "SHA256";
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+/*
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+ * Input parameters from RFC 6070, vector 5 (because it is the only one with
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+ * a salt >= 16 bytes, which NIST SP 800-132 section 5.1 requires). The
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+ * expected output is taken from
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+ * https://github.com/brycx/Test-Vector-Generation/blob/master/PBKDF2/pbkdf2-hmac-sha2-test-vectors.md,
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+ * which ran these test vectors with SHA-256.
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+ */
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static const unsigned char pbkdf2_password[] = {
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- 0x70, 0x61, 0x73, 0x73, 0x00, 0x77, 0x6f, 0x72,
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- 0x64
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+ 0x70, 0x61, 0x73, 0x73, 0x77, 0x6f, 0x72, 0x64, 0x50, 0x41, 0x53, 0x53,
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+ 0x57, 0x4f, 0x52, 0x44, 0x70, 0x61, 0x73, 0x73, 0x77, 0x6f, 0x72, 0x64
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};
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static const unsigned char pbkdf2_salt[] = {
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- 0x73, 0x61, 0x00, 0x6c, 0x74
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+ 0x73, 0x61, 0x6c, 0x74, 0x53, 0x41, 0x4c, 0x54, 0x73, 0x61, 0x6c, 0x74,
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+ 0x53, 0x41, 0x4c, 0x54, 0x73, 0x61, 0x6c, 0x74, 0x53, 0x41, 0x4c, 0x54,
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+ 0x73, 0x61, 0x6c, 0x74, 0x53, 0x41, 0x4c, 0x54, 0x73, 0x61, 0x6c, 0x74
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};
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static const unsigned char pbkdf2_expected[] = {
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- 0x89, 0xb6, 0x9d, 0x05, 0x16, 0xf8, 0x29, 0x89,
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- 0x3c, 0x69, 0x62, 0x26, 0x65, 0x0a, 0x86, 0x87,
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+ 0x34, 0x8c, 0x89, 0xdb, 0xcb, 0xd3, 0x2b, 0x2f, 0x32, 0xd8, 0x14, 0xb8,
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+ 0x11, 0x6e, 0x84, 0xcf, 0x2b, 0x17, 0x34, 0x7e, 0xbc, 0x18, 0x00, 0x18,
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+ 0x1c
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};
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static int pbkdf2_iterations = 4096;
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-static int pbkdf2_pkcs5 = 1;
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+static int pbkdf2_pkcs5 = 0;
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static const ST_KAT_PARAM pbkdf2_params[] = {
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ST_KAT_PARAM_UTF8STRING(OSSL_KDF_PARAM_DIGEST, pbkdf2_digest),
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ST_KAT_PARAM_OCTET(OSSL_KDF_PARAM_PASSWORD, pbkdf2_password),
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--
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2.39.2
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