LibreSSL 2.3.0 发布，安全套接字库

LibreSSL 是一个免费版本的 SSL/TLS 协议，来自于 OpenSSL

LibreSSL 支持多平台，开发者宣称“我们不想要伤透你们的心”。

  * SSLv3 is now permanently removed from the tree.

  * The libtls API is changed from the 2.2.x series.

    The read/write functions work correctly with external event
    libraries.  See the tls_init man page for examples of using libtls
    correctly in asynchronous mode.

    Client-side verification is now supported, with the client supplying
    the certificate to the server.

    Also, when using tls_connect_fds, tls_connect_socket or
    tls_accept_fds, libtls no longer implicitly closes the passed in
    sockets. The caller is responsible for closing them in this case.

  * When loading a DSA key from an raw (without DH parameters) ASN.1
    serialization, perform some consistency checks on its `p' and `q'
    values, and return an error if the checks failed.

    Thanks for Georgi Guninski (guninski at guninski dot com) for
    mentioning the possibility of a weak (non prime) q value and
    providing a test case.

    See    https://cpunks.org/pipermail/cypherpunks/2015-September/009007.html
    for a longer discussion

  * Fixed a bug in ECDH_compute_key that can lead to silent truncation
    of the result key without error. A coding error could cause software
    to use much shorter keys than intended.

  * Removed support for DTLS_BAD_VER. Pre-DTLSv1 implementations are no
    longer supported.

  * The engine command and parameters are removed from the openssl(1).
    Previous releases removed dynamic and builtin engine support
    already.

  * SHA-0 is removed, which was withdrawn shortly after publication 20
    years ago.

  * Added Certplus CA root certificate to the default cert.pem file.

  * New interface OPENSSL_cpu_caps is provided that does not allow
    software to inadvertently modify cpu capability flags.
    OPENSSL_ia32cap and OPENSSL_ia32cap_loc are removed.

  * The out_len argument of AEAD changed from ssize_t to size_t.

  * Deduplicated DTLS code, sharing bugfixes and improvements with
    TLS.

  * Converted 'nc' to use libtls for client and server operations; it is
    included in the libressl-portable distribution as an example of how
    to use the library.

详情请看：发行说明。