crypto/tls: advertise support for SHA-512 signatures in 1.2

This is the equivalent change to 1c105980 but for SHA-512.

SHA-512 certificates are already supported by default since b53bb2ca,
but some servers will refuse connections if the algorithm is not
advertised in the overloaded signatureAndHash extension (see 09b238f1).

This required adding support for SHA-512 signatures on CertificateVerify
and ServerKeyExchange messages, because of said overloading.

Some testdata/Client-TLSv1{0,1} files changed because they send a 1.2
ClientHello even if the server picks a lower version.

Closes #22422

Change-Id: I16282d03a3040260d203711ec21e6b20a0e1e105
Reviewed-on: https://go-review.googlesource.com/74950
Run-TryBot: Filippo Valsorda <hi@filippo.io>
TryBot-Result: Gobot Gobot <gobot@golang.org>
Reviewed-by: Adam Langley <agl@golang.org>

1 files changed, 30 insertions, 30 deletions

diff --git a/src/crypto/tls/testdata/Server-TLSv12-ClientAuthRequestedNotGiven b/src/crypto/tls/testdata/Server-TLSv12-ClientAuthRequestedNotGiven
index 091de9081e..924ef9df7e 100644
--- a/src/crypto/tls/testdata/Server-TLSv12-ClientAuthRequestedNotGiven
+++ b/src/crypto/tls/testdata/Server-TLSv12-ClientAuthRequestedNotGiven
@@ -1,7 +1,7 @@
 >>> Flow 1 (client to server)
-00000000  16 03 01 00 5d 01 00 00  59 03 03 41 24 db 27 37  |....]...Y..A$.'7|
-00000010  2e 1e a8 61 b7 7f 08 f1  83 84 fb d5 a2 96 e0 53  |...a...........S|
-00000020  1a 2b cd 8e 50 38 7b a5  64 d8 92 00 00 04 00 2f  |.+..P8{.d....../|
+00000000  16 03 01 00 5d 01 00 00  59 03 03 ee 51 24 51 2c  |....]...Y...Q$Q,|
+00000010  0b 9f 26 d2 7c e0 8b 8a  9b a8 d3 a9 a7 59 05 a3  |..&.|........Y..|
+00000020  67 92 fc 3f cb e8 cd ba  62 b7 19 00 00 04 00 2f  |g..?....b....../|
 00000030  00 ff 01 00 00 2c 00 0d  00 20 00 1e 06 01 06 02  |.....,... ......|
 00000040  06 03 05 01 05 02 05 03  04 01 04 02 04 03 03 01  |................|
 00000050  03 02 03 03 02 01 02 02  02 03 00 16 00 00 00 17  |................|
@@ -48,36 +48,36 @@
 00000260  f1 6c 04 ed 73 bb b3 43  77 8d 0c 1c f1 0f a1 d8  |.l..s..Cw.......|
 00000270  40 83 61 c9 4c 72 2b 9d  ae db 46 06 06 4d f4 c1  |@.a.Lr+...F..M..|
 00000280  b3 3e c0 d1 bd 42 d4 db  fe 3d 13 60 84 5c 21 d3  |.>...B...=.`.\!.|
-00000290  3b e9 fa e7 16 03 03 00  17 0d 00 00 13 02 01 40  |;..............@|
-000002a0  00 0c 04 01 04 03 05 01  05 03 02 01 02 03 00 00  |................|
-000002b0  16 03 03 00 04 0e 00 00  00                       |.........|
+00000290  3b e9 fa e7 16 03 03 00  1b 0d 00 00 17 02 01 40  |;..............@|
+000002a0  00 10 04 01 04 03 05 01  05 03 06 01 06 03 02 01  |................|
+000002b0  02 03 00 00 16 03 03 00  04 0e 00 00 00           |.............|
 >>> Flow 3 (client to server)
 00000000  16 03 03 00 07 0b 00 00  03 00 00 00 16 03 03 00  |................|
-00000010  86 10 00 00 82 00 80 61  2e 6b ad 77 48 8d 2f 0e  |.......a.k.wH./.|
-00000020  e6 27 64 fd 95 22 72 68  80 8e 2b 0e b2 0f cc be  |.'d.."rh..+.....|
-00000030  19 31 93 1d d3 0a fb 00  da 50 26 66 17 59 6b e9  |.1.......P&f.Yk.|
-00000040  7e 16 4e 24 ba 68 0a 0c  69 2f 03 74 34 50 12 85  |~.N$.h..i/.t4P..|
-00000050  4a f0 6c 52 d4 dd 13 18  c7 a4 9d ea f0 c6 94 d9  |J.lR............|
-00000060  ae fe 19 6c 83 dd ed 38  e3 d2 21 18 e6 76 11 e7  |...l...8..!..v..|
-00000070  62 13 8b 56 65 e0 f6 61  d9 db 7c 7b 5b 57 13 3d  |b..Ve..a..|{[W.=|
-00000080  58 64 67 8d 9f 3f 6a a0  70 c5 c6 d0 db eb 17 3f  |Xdg..?j.p......?|
-00000090  6c 58 d7 c3 ba ec 4c 14  03 03 00 01 01 16 03 03  |lX....L.........|
-000000a0  00 40 6e 24 1b a4 b3 e7  d4 c2 7e cb bd 82 2d 4c  |.@n$......~...-L|
-000000b0  a8 f1 5e 81 c8 61 a6 2c  6a e3 6d 30 7f fa c7 f3  |..^..a.,j.m0....|
-000000c0  f6 b1 b1 4f 0b 23 9a fd  66 81 48 97 4b 0f 88 07  |...O.#..f.H.K...|
-000000d0  37 7b 97 b0 62 6c 2a e1  47 65 e9 f9 cd c1 79 99  |7{..bl*.Ge....y.|
-000000e0  6d 84                                             |m.|
+00000010  86 10 00 00 82 00 80 0b  e8 d9 4f fa 7d 63 8c 89  |..........O.}c..|
+00000020  b7 c8 73 76 9b fa 7f b6  c3 57 f2 54 75 90 90 ec  |..sv.....W.Tu...|
+00000030  9e 8d 08 ae 3f dc 6e fa  df 2a 32 2b 35 e9 03 f7  |....?.n..*2+5...|
+00000040  c5 d1 7c f5 20 1f 77 0a  24 b8 4e 7e 11 fe b0 87  |..|. .w.$.N~....|
+00000050  db f6 ff 92 1a fc 6a 8d  48 7e ac bc 95 99 4a f8  |......j.H~....J.|
+00000060  1b cc 07 42 48 0c 25 d2  47 82 59 14 76 84 d3 e9  |...BH.%.G.Y.v...|
+00000070  d6 0a 5a b1 0a c6 31 3e  80 e2 29 c8 a6 31 dd 64  |..Z...1>..)..1.d|
+00000080  96 7a f5 ee d9 0f 03 b5  93 05 b8 a2 04 66 ff fc  |.z...........f..|
+00000090  f5 2f e7 6c b9 2d 98 14  03 03 00 01 01 16 03 03  |./.l.-..........|
+000000a0  00 40 f2 d2 da 46 89 c4  17 25 b8 33 d6 38 46 5c  |.@...F...%.3.8F\|
+000000b0  80 a0 eb cf fd 5a 27 f3  0b 16 e1 29 bd b8 46 28  |.....Z'....)..F(|
+000000c0  11 d3 cc 12 12 96 9b b8  31 52 50 73 81 57 aa 29  |........1RPs.W.)|
+000000d0  5c 66 da 39 2d f8 cb 15  e0 01 86 b5 0b d5 1f 56  |\f.9-..........V|
+000000e0  23 a0                                             |#.|
 >>> Flow 4 (server to client)
 00000000  14 03 03 00 01 01 16 03  03 00 40 00 00 00 00 00  |..........@.....|
-00000010  00 00 00 00 00 00 00 00  00 00 00 40 c6 62 4e 26  |...........@.bN&|
-00000020  e7 32 09 ba d6 3b 71 79  8e 75 ee fb af 09 db c5  |.2...;qy.u......|
-00000030  a5 8b cd 1f 90 f3 65 86  4a b4 b1 9a e8 1e 80 f6  |......e.J.......|
-00000040  ad db bd c2 9f ec 98 42  0b 37 30 17 03 03 00 40  |.......B.70....@|
+00000010  00 00 00 00 00 00 00 00  00 00 00 65 58 5e 2f 25  |...........eX^/%|
+00000020  67 71 87 7d a9 75 73 80  6b 03 76 63 a8 1f 80 06  |gq.}.us.k.vc....|
+00000030  0f 78 b0 75 20 9e ab 36  59 d7 f9 88 22 c1 d1 be  |.x.u ..6Y..."...|
+00000040  c9 d2 c1 13 20 6a 75 07  95 00 ca 17 03 03 00 40  |.... ju........@|
 00000050  00 00 00 00 00 00 00 00  00 00 00 00 00 00 00 00  |................|
-00000060  a9 74 3c 13 87 f4 cf 77  be 07 c2 a1 e0 47 4e 52  |.t<....w.....GNR|
-00000070  c2 86 da 08 c2 93 21 80  4c 19 51 cc 0d 76 49 75  |......!.L.Q..vIu|
-00000080  0b 48 3d e0 e2 01 93 4b  f1 73 91 17 aa 00 b5 71  |.H=....K.s.....q|
+00000060  25 31 9c 1d 48 d9 c3 e4  59 3a 3a e2 85 3a 78 27  |%1..H...Y::..:x'|
+00000070  85 69 63 8e 3c 32 b2 03  65 3f 7a 7f 3b fe b1 83  |.ic.<2..e?z.;...|
+00000080  f6 64 a1 3e 83 55 7b 39  2a 01 86 de 79 a3 55 b1  |.d.>.U{9*...y.U.|
 00000090  15 03 03 00 30 00 00 00  00 00 00 00 00 00 00 00  |....0...........|
-000000a0  00 00 00 00 00 1f 2f 2d  d7 39 06 c4 59 49 80 66  |....../-.9..YI.f|
-000000b0  6c 35 2e a7 45 ee 0a 05  4b 1e 7f 78 5d cd 24 2c  |l5..E...K..x].$,|
-000000c0  0a 3e 55 1c 7d                                    |.>U.}|
+000000a0  00 00 00 00 00 40 26 48  75 e5 e0 83 c0 1a 66 5a  |.....@&Hu.....fZ|
+000000b0  5f b2 11 a6 b7 a3 4d f2  ca 49 6a f2 48 a1 ee 99  |_.....M..Ij.H...|
+000000c0  ff 0d c1 f7 4f                                    |....O|