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Fix weak digest in TLS 1.2 with SNI. #4577

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Fix weak digest in TLS 1.2 with SNI. #4577

wants to merge 1 commit into from

Commits on Oct 23, 2017

  1. Fix weak digest in TLS 1.2 with SNI. 

    1ce95f1 was incomplete and did not
handle the case when SSL_set_SSL_CTX was called from the cert_cb
callback rather than the SNI callback. The consequence is any server
using OpenSSL 1.0.2 and the cert_cb callback for SNI only ever signs a
weak digest, SHA-1, even when connecting to clients which use secure
ones.

Fix this and add regression tests for both this and the original issue.

Fixes openssl#4554.
    @davidben
    davidben committed Oct 23, 2017
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