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Adam Langley 4e47a4aef7 crypto/tls: support TLS_FALLBACK_SCSV as a server. 
A new attack on CBC padding in SSLv3 was released yesterday[1]. Go only
supports SSLv3 as a server, not as a client. An easy fix is to change
the default minimum version to TLS 1.0 but that seems a little much
this late in the 1.4 process as it may break some things.

Thus this patch adds server support for TLS_FALLBACK_SCSV[2] -- a
mechanism for solving the fallback problem overall. Chrome has
implemented this since February and Google has urged others to do so in
light of yesterday's news.

With this change, clients can indicate that they are doing a fallback
connection and Go servers will be able to correctly reject them.

[1] http://googleonlinesecurity.blogspot.com/2014/10/this-poodle-bites-exploiting-ssl-30.html
[2] https://tools.ietf.org/html/draft-ietf-tls-downgrade-scsv-00

LGTM=rsc
R=rsc
CC=golang-codereviews
https://golang.org/cl/157090043
2014-10-15 17:54:04 -07:00
..
Client-TLSv10-ClientCert-ECDSA-ECDSA crypto/tls: pick ECDHE curves based on server preference. 2014-02-24 17:57:51 -05:00
Client-TLSv10-ClientCert-ECDSA-RSA crypto/tls: pick ECDHE curves based on server preference. 2014-02-24 17:57:51 -05:00
Client-TLSv10-ClientCert-RSA-ECDSA crypto/tls: pick ECDHE curves based on server preference. 2014-02-24 17:57:51 -05:00
Client-TLSv10-ClientCert-RSA-RSA crypto/tls: pick ECDHE curves based on server preference. 2014-02-24 17:57:51 -05:00
Client-TLSv10-ECDHE-ECDSA-AES crypto/tls: pick ECDHE curves based on server preference. 2014-02-24 17:57:51 -05:00
Client-TLSv10-ECDHE-RSA-AES crypto/tls: pick ECDHE curves based on server preference. 2014-02-24 17:57:51 -05:00
Client-TLSv10-RSA-RC4 crypto/tls: pick ECDHE curves based on server preference. 2014-02-24 17:57:51 -05:00
Client-TLSv11-ECDHE-ECDSA-AES crypto/tls: pick ECDHE curves based on server preference. 2014-02-24 17:57:51 -05:00
Client-TLSv11-ECDHE-RSA-AES crypto/tls: pick ECDHE curves based on server preference. 2014-02-24 17:57:51 -05:00
Client-TLSv11-RSA-RC4 crypto/tls: pick ECDHE curves based on server preference. 2014-02-24 17:57:51 -05:00
Client-TLSv12-ALPN crypto/tls: add ALPN support. 2014-08-05 11:36:20 -07:00
Client-TLSv12-ALPN-NoMatch crypto/tls: add ALPN support. 2014-08-05 11:36:20 -07:00
Client-TLSv12-ClientCert-ECDSA-ECDSA crypto/tls: pick ECDHE curves based on server preference. 2014-02-24 17:57:51 -05:00
Client-TLSv12-ClientCert-ECDSA-RSA crypto/tls: pick ECDHE curves based on server preference. 2014-02-24 17:57:51 -05:00
Client-TLSv12-ClientCert-RSA-ECDSA crypto/tls: pick ECDHE curves based on server preference. 2014-02-24 17:57:51 -05:00
Client-TLSv12-ClientCert-RSA-RSA crypto/tls: pick ECDHE curves based on server preference. 2014-02-24 17:57:51 -05:00
Client-TLSv12-ECDHE-ECDSA-AES crypto/tls: pick ECDHE curves based on server preference. 2014-02-24 17:57:51 -05:00
Client-TLSv12-ECDHE-ECDSA-AES-GCM crypto/tls: pick ECDHE curves based on server preference. 2014-02-24 17:57:51 -05:00
Client-TLSv12-ECDHE-RSA-AES crypto/tls: pick ECDHE curves based on server preference. 2014-02-24 17:57:51 -05:00
Client-TLSv12-RSA-RC4 crypto/tls: pick ECDHE curves based on server preference. 2014-02-24 17:57:51 -05:00
Server-SSLv3-RSA-3DES crypto/tls: support renegotiation extension. 2014-01-09 13:38:11 -05:00
Server-SSLv3-RSA-AES crypto/tls: support renegotiation extension. 2014-01-09 13:38:11 -05:00
Server-SSLv3-RSA-RC4 crypto/tls: support renegotiation extension. 2014-01-09 13:38:11 -05:00
Server-TLSv10-ECDHE-ECDSA-AES crypto/tls: pick ECDHE curves based on server preference. 2014-02-24 17:57:51 -05:00
Server-TLSv10-RSA-3DES crypto/tls: support renegotiation extension. 2014-01-09 13:38:11 -05:00
Server-TLSv10-RSA-AES crypto/tls: support renegotiation extension. 2014-01-09 13:38:11 -05:00
Server-TLSv10-RSA-RC4 crypto/tls: support renegotiation extension. 2014-01-09 13:38:11 -05:00
Server-TLSv11-FallbackSCSV crypto/tls: support TLS_FALLBACK_SCSV as a server. 2014-10-15 17:54:04 -07:00
Server-TLSv11-RSA-RC4 crypto/tls: support renegotiation extension. 2014-01-09 13:38:11 -05:00
Server-TLSv12-ALPN crypto/tls: add ALPN support. 2014-08-05 11:36:20 -07:00
Server-TLSv12-ALPN-NoMatch crypto/tls: add ALPN support. 2014-08-05 11:36:20 -07:00
Server-TLSv12-CipherSuiteCertPreferenceECDSA crypto/tls: pick ECDHE curves based on server preference. 2014-02-24 17:57:51 -05:00
Server-TLSv12-CipherSuiteCertPreferenceRSA crypto/tls: pick ECDHE curves based on server preference. 2014-02-24 17:57:51 -05:00
Server-TLSv12-ClientAuthRequestedAndECDSAGiven crypto/tls: support renegotiation extension. 2014-01-09 13:38:11 -05:00
Server-TLSv12-ClientAuthRequestedAndGiven crypto/tls: support renegotiation extension. 2014-01-09 13:38:11 -05:00
Server-TLSv12-ClientAuthRequestedNotGiven crypto/tls: support renegotiation extension. 2014-01-09 13:38:11 -05:00
Server-TLSv12-ECDHE-ECDSA-AES crypto/tls: pick ECDHE curves based on server preference. 2014-02-24 17:57:51 -05:00
Server-TLSv12-IssueTicket crypto/tls: support renegotiation extension. 2014-01-09 13:38:11 -05:00
Server-TLSv12-IssueTicketPreDisable crypto/tls: ensure that we don't resume when tickets are disabled. 2014-09-26 11:02:09 +10:00
Server-TLSv12-Resume crypto/tls: support renegotiation extension. 2014-01-09 13:38:11 -05:00
Server-TLSv12-ResumeDisabled crypto/tls: ensure that we don't resume when tickets are disabled. 2014-09-26 11:02:09 +10:00
Server-TLSv12-RSA-3DES crypto/tls: support renegotiation extension. 2014-01-09 13:38:11 -05:00
Server-TLSv12-RSA-AES crypto/tls: support renegotiation extension. 2014-01-09 13:38:11 -05:00
Server-TLSv12-RSA-AES-GCM crypto/tls: pick ECDHE curves based on server preference. 2014-02-24 17:57:51 -05:00
Server-TLSv12-RSA-RC4 crypto/tls: support renegotiation extension. 2014-01-09 13:38:11 -05:00
Server-TLSv12-SNI crypto/tls: support renegotiation extension. 2014-01-09 13:38:11 -05:00