Require Certificate Transparency for Symantec-operated roots

net/data/ssl/symantec/README.md

Index: net/data/ssl/symantec/README.md
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+# Symantec Certificates
+
+This directory contains the set of known active and legacy root certificates
+operated by Symantec Corporation. In order for certificates issued from
+roots to be trusted, it is required that the certificates be logged using
+Certificate Transparency.
+
+For details about why, see <https://security.googleblog.com/2015/10/sustaining-digital-certificate-security.html>
+
+The exception to this is sub-CAs which have been disclosed as independently
+operated, whose keys are not in control of Symantec, and which are maintaining
+a current and appropriate audit.
+
+## Roots
+
+The full set of roots are in the [roots/](roots/) directory, organized by SHA-256 hash of the certificate file.
+
+The following command can be used to match certificates and their key hashes:
+
+`` for f in roots/*.pem; do openssl x509 -noout -pubkey -in "${f}" | openssl asn1parse -inform pem -out /tmp/pubkey.out -noout; digest=`cat /tmp/pubkey.out | openssl dgst -sha256 -c | awk -F " " '{print $2}' | sed s/:/,0x/g `; echo "0x${digest} ${f##*/}"; done | sort ``
+
+## Excluded Sub-CAs
+
+### Aetna
+
+[Certification Practices Statement](http://crl.aetna.com/aetnacps.pdf)
+Note: Not issuing new certificates and can be removed after October 2016.
+
+  * [d6e4e7b9af3bd5a8f2d6321cde26639c25644f7307ce16aad347d9ad53d3ce13.pem](excluded/d6e4e7b9af3bd5a8f2d6321cde26639c25644f7307ce16aad347d9ad53d3ce13.pem)
+
+### Apple
+
+[WebTrust Audit](https://cert.webtrust.org/ViewSeal?id=1917)
+[Certification Practices Statement](http://images.apple.com/certificateauthority/pdf/Apple_IST_CPS_v2.0.pdf)
+
+  * [17f96609ac6ad0a2d6ab0a21b2d1b5b2946bd04dbf120703d1def6fb62f4b661.pem](excluded/17f96609ac6ad0a2d6ab0a21b2d1b5b2946bd04dbf120703d1def6fb62f4b661.pem)
+  * [3db76d1dd7d3a759dccc3f8fa7f68675c080cb095e4881063a6b850fdd68b8bc.pem](excluded/3db76d1dd7d3a759dccc3f8fa7f68675c080cb095e4881063a6b850fdd68b8bc.pem)
+  * [6115f06a338a649e61585210e76f2ece3989bca65a62b066040cd7c5f408edd0.pem](excluded/6115f06a338a649e61585210e76f2ece3989bca65a62b066040cd7c5f408edd0.pem)
+  * [904fb5a437754b1b32b80ebae7416db63d05f56a9939720b7c8e3dcc54f6a3d1.pem](excluded/904fb5a437754b1b32b80ebae7416db63d05f56a9939720b7c8e3dcc54f6a3d1.pem)
+  * [ac2b922ecfd5e01711772fea8ed372de9d1e2245fce3f57a9cdbec77296a424b.pem](excluded/ac2b922ecfd5e01711772fea8ed372de9d1e2245fce3f57a9cdbec77296a424b.pem)
+
+### Google
+
+[WebTrust Audit](https://cert.webtrust.org/ViewSeal?id=1941)
+[Certification Practices Statement](http://static.googleusercontent.com/media/pki.google.com/en//GIAG2-CPS-1.3.pdf)
+
+  * [c3f697a92a293d86f9a3ee7ccb970e20e0050b8728cc83ed1b996ce9005d4c36.pem](excluded/c3f697a92a293d86f9a3ee7ccb970e20e0050b8728cc83ed1b996ce9005d4c36.pem)
+
+### Unicredit
+
+  * [8c31013d19f8eea618c95fda6d21f5777c6e930c7413031559ee863d78dfe809.pem](excluded/8c31013d19f8eea618c95fda6d21f5777c6e930c7413031559ee863d78dfe809.pem)
+