krb5-1.16

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New minor version.

[bdubbs@…]

Major changes in 1.16 (2017-12-05)

Administrator experience

• The KDC can match PKINIT client certificates against the "pkinit_cert_match" string attribute on the client principal entry, using the same syntax as the existing "pkinit_cert_match" profile option.
• The ktutil addent command supports the "-k 0" option to ignore the key version, and the "-s" option to use a non-default salt string.
• kpropd supports a --pid-file option to write a pid file at startup, when it is run in standalone mode.
• The "encrypted_challenge_indicator" realm option can be used to attach an authentication indicator to tickets obtained using FAST encrypted challenge pre-authentication.
• Localization support can be disabled at build time with the --disable-nls configure option.

Developer experience

• The kdcpolicy pluggable interface allows modules control whether tickets are issued by the KDC.
• The kadm5_auth pluggable interface allows modules to control whether kadmind grants access to a kadmin request.
• The certauth pluggable interface allows modules to control which PKINIT client certificates can authenticate to which client principals.
• KDB modules can use the client and KDC interface IP addresses to determine whether to allow an AS request.
• GSS applications can query the bit strength of a krb5 GSS context using the GSS_C_SEC_CONTEXT_SASL_SSF OID with gss_inquire_sec_context_by_oid().
• GSS applications can query the impersonator name of a krb5 GSS credential using the GSS_KRB5_GET_CRED_IMPERSONATOR OID with gss_inquire_cred_by_oid().
• kdcpreauth modules can query the KDC for the canonicalized requested client principal name, or match a principal name against the requested client principal name with canonicalization.

Protocol evolution

• The client library will continue to try pre-authentication mechanisms after most failure conditions.
• The KDC will issue trivially renewable tickets (where the renewable lifetime is equal to or less than the ticket lifetime) if requested by the client, to be friendlier to scripts.
• The client library will use a random nonce for TGS requests instead of the current system time.
• For the RC4 string-to-key or PAC operations, UTF-16 is supported (previously only UCS-2 was supported).
• When matching PKINIT client certificates, UPN SANs will be matched correctly as UPNs, with canonicalization.

User experience

• Dates after the year 2038 are accepted (provided that the platform time facilities support them), through the year 2106.
• Automatic credential cache selection based on the client realm will take into account the fallback realm and the service hostname.
• Referral and alternate cross-realm TGTs will not be cached, avoiding some scenarios where they can be added to the credential cache multiple times.
• A German translation has been added.

Code quality

• The build is warning-clean under clang with the configured warning options.
• The automated test suite runs cleanly under AddressSanitizer.

[bdubbs@…]

Fixed at revision 19621.