NSS 3.43 release notes


The NSS team has released Network Security Services (NSS) 3.43 on 16 March 2019, which is a minor release.

Distribution Information

The HG tag is NSS_3_43_RTM. NSS 3.43 requires NSPR 4.21 or newer.

NSS 3.43 source distributions are available on ftp.mozilla.org for secure HTTPS download:

Other releases are available Release notes for recent versions of NSS.

New in NSS 3.43

New Functionality

New Functions

  • in sechash.h

    • HASH_GetHashOidTagByHashType - convert type HASH_HashType to type SECOidTag

  • in sslexp.h

    • SSL_SendCertificateRequest - allow server to request post-handshake client authentication. To use this both peers need to enable the SSL_ENABLE_POST_HANDSHAKE_AUTH option. Note that while the mechanism is present, post-handshake authentication is currently not TLS 1.3 compliant due to Bug 1532312

Notable Changes in NSS 3.43

  • The following CA certificates were Added:

    • CN = emSign Root CA - G1

      • SHA-256 Fingerprint: 40F6AF0346A99AA1CD1D555A4E9CCE62C7F9634603EE406615833DC8C8D00367

    • CN = emSign ECC Root CA - G3

      • SHA-256 Fingerprint: 86A1ECBA089C4A8D3BBE2734C612BA341D813E043CF9E8A862CD5C57A36BBE6B

    • CN = emSign Root CA - C1

      • SHA-256 Fingerprint: 125609AA301DA0A249B97A8239CB6A34216F44DCAC9F3954B14292F2E8C8608F

    • CN = emSign ECC Root CA - C3

      • SHA-256 Fingerprint: BC4D809B15189D78DB3E1D8CF4F9726A795DA1643CA5F1358E1DDB0EDC0D7EB3

    • CN = Hongkong Post Root CA 3

      • SHA-256 Fingerprint: 5A2FC03F0C83B090BBFA40604B0988446C7636183DF9846E17101A447FB8EFD6

  • The following CA certificates were Removed:

    • None

Bugs fixed in NSS 3.43

This Bugzilla query returns all the bugs fixed in NSS 3.43:



NSS 3.43 shared libraries are backward compatible with all older NSS 3.x shared libraries. A program linked with older NSS 3.x shared libraries will work with NSS 3.43 shared libraries without recompiling or relinking. Furthermore, applications that restrict their use of NSS APIs to the functions listed in NSS Public Functions will remain compatible with future versions of the NSS shared libraries.


Bugs discovered should be reported by filing a bug report with bugzilla.mozilla.org (product NSS).