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| author | Chuck Lever <chuck.lever@oracle.com> | 2023-01-15 12:22:43 -0500 |
|---|---|---|
| committer | Chuck Lever <chuck.lever@oracle.com> | 2023-02-20 09:20:43 -0500 |
| commit | a40cf7530d3104793f9361e69e84ada7960724f2 (patch) | |
| tree | 10596e99e15f34ed07be0407d1cae635a4083e2e /net/sunrpc/auth_gss/gss_krb5_mech.c | |
| parent | dfb632432a9b2548b5a4429598bb19edf58122f0 (diff) | |
| download | linux-a40cf7530d3104793f9361e69e84ada7960724f2.tar.gz | |
SUNRPC: Add gk5e definitions for RFC 8009 encryption types
Fill in entries in the supported_gss_krb5_enctypes array for the
encryption types defined in RFC 8009. These new enctypes use the
SHA-256 and SHA-384 message digest algorithms (as defined in
FIPS-180) instead of the deprecated SHA-1 algorithm, and are thus
more secure.
Note that NIST has scheduled SHA-1 for deprecation:
https://www.nist.gov/news-events/news/2022/12/nist-retires-sha-1-cryptographic-algorithm
Thus these new encryption types are placed under a separate CONFIG
option to enable distributors to separately introduce support for
the AES-SHA2 enctypes and deprecate support for the current set of
AES-SHA1 encryption types as their user space allows.
As this implementation is still a "beta", the default is to not
build it automatically.
Tested-by: Scott Mayhew <smayhew@redhat.com>
Reviewed-by: Simo Sorce <simo@redhat.com>
Signed-off-by: Chuck Lever <chuck.lever@oracle.com>
Diffstat (limited to 'net/sunrpc/auth_gss/gss_krb5_mech.c')
| -rw-r--r-- | net/sunrpc/auth_gss/gss_krb5_mech.c | 51 |
1 files changed, 51 insertions, 0 deletions
diff --git a/net/sunrpc/auth_gss/gss_krb5_mech.c b/net/sunrpc/auth_gss/gss_krb5_mech.c index ec3cca8fadc5c3..1951867f3fa817 100644 --- a/net/sunrpc/auth_gss/gss_krb5_mech.c +++ b/net/sunrpc/auth_gss/gss_krb5_mech.c @@ -146,6 +146,57 @@ static const struct gss_krb5_enctype supported_gss_krb5_enctypes[] = { .keyed_cksum = 1, }, #endif + +#if defined(CONFIG_RPCSEC_GSS_KRB5_ENCTYPES_AES_SHA2) + /* + * AES-128 with SHA-256 (RFC 8009) + */ + { + .etype = ENCTYPE_AES128_CTS_HMAC_SHA256_128, + .ctype = CKSUMTYPE_HMAC_SHA256_128_AES128, + .name = "aes128-cts-hmac-sha256-128", + .encrypt_name = "cts(cbc(aes))", + .aux_cipher = "cbc(aes)", + .cksum_name = "hmac(sha256)", + .cksumlength = BITS2OCTETS(128), + .keyed_cksum = 1, + .keylength = BITS2OCTETS(128), + .Kc_length = BITS2OCTETS(128), + .Ke_length = BITS2OCTETS(128), + .Ki_length = BITS2OCTETS(128), + + .import_ctx = gss_krb5_import_ctx_v2, + + .get_mic = gss_krb5_get_mic_v2, + .verify_mic = gss_krb5_verify_mic_v2, + .wrap = gss_krb5_wrap_v2, + .unwrap = gss_krb5_unwrap_v2, + }, + /* + * AES-256 with SHA-384 (RFC 8009) + */ + { + .etype = ENCTYPE_AES256_CTS_HMAC_SHA384_192, + .ctype = CKSUMTYPE_HMAC_SHA384_192_AES256, + .name = "aes256-cts-hmac-sha384-192", + .encrypt_name = "cts(cbc(aes))", + .aux_cipher = "cbc(aes)", + .cksum_name = "hmac(sha384)", + .cksumlength = BITS2OCTETS(192), + .keyed_cksum = 1, + .keylength = BITS2OCTETS(256), + .Kc_length = BITS2OCTETS(192), + .Ke_length = BITS2OCTETS(256), + .Ki_length = BITS2OCTETS(192), + + .import_ctx = gss_krb5_import_ctx_v2, + + .get_mic = gss_krb5_get_mic_v2, + .verify_mic = gss_krb5_verify_mic_v2, + .wrap = gss_krb5_wrap_v2, + .unwrap = gss_krb5_unwrap_v2, + }, +#endif }; /* |