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, 25 insertions, 25 deletions

diff --git a/src/crypto/tls/testdata/Server-TLSv12-RSA-AES-GCM b/src/crypto/tls/testdata/Server-TLSv12-RSA-AES-GCM
index 4e52915ac5..4c1cbc9ede 100644
--- a/src/crypto/tls/testdata/Server-TLSv12-RSA-AES-GCM
+++ b/src/crypto/tls/testdata/Server-TLSv12-RSA-AES-GCM
@@ -1,7 +1,7 @@
 >>> Flow 1 (client to server)
-00000000  16 03 01 00 73 01 00 00  6f 03 03 4e 1a d7 67 e4  |....s...o..N..g.|
-00000010  d1 11 85 bc 62 59 da 8f  ea d0 a0 2b 9b d3 47 aa  |....bY.....+..G.|
-00000020  d0 39 6f 3f 42 dc 7c 16  bb 25 ef 00 00 04 c0 2f  |.9o?B.|..%...../|
+00000000  16 03 01 00 73 01 00 00  6f 03 03 38 2b d9 54 15  |....s...o..8+.T.|
+00000010  60 c3 a7 88 e6 c3 73 8f  b0 76 4f d0 10 72 2c d6  |`.....s..vO..r,.|
+00000020  55 fc c2 f0 ab 0f 62 43  f1 86 f8 00 00 04 c0 2f  |U.....bC......./|
 00000030  00 ff 01 00 00 42 00 0b  00 04 03 00 01 02 00 0a  |.....B..........|
 00000040  00 0a 00 08 00 1d 00 17  00 19 00 18 00 0d 00 20  |............... |
 00000050  00 1e 06 01 06 02 06 03  05 01 05 02 05 03 04 01  |................|
@@ -52,28 +52,28 @@
 00000290  3b e9 fa e7 16 03 03 00  ac 0c 00 00 a8 03 00 1d  |;...............|
 000002a0  20 2f e5 7d a3 47 cd 62  43 15 28 da ac 5f bb 29  | /.}.G.bC.(.._.)|
 000002b0  07 30 ff f6 84 af c4 cf  c2 ed 90 99 5f 58 cb 3b  |.0.........._X.;|
-000002c0  74 05 01 00 80 b2 49 30  60 b7 0c 48 cb 9f 1c 75  |t.....I0`..H...u|
-000002d0  a6 b0 b0 7b 5e e6 f9 bc  5a 49 d4 51 e2 76 4c 01  |...{^...ZI.Q.vL.|
-000002e0  55 bd 37 cf 86 75 4f 33  9b fd 3c fc bb da 81 a9  |U.7..uO3..<.....|
-000002f0  26 7b 82 31 c5 51 0f d4  e8 fa a3 16 45 19 c8 40  |&{.1.Q......E..@|
-00000300  23 fa 32 bc 05 36 fb a7  a2 d9 6f e7 bc b8 27 0b  |#.2..6....o...'.|
-00000310  2a 9e 7b 95 fd b4 c0 2e  f0 73 fe fb a2 ea 20 a2  |*.{......s.... .|
-00000320  73 73 96 c8 bc 82 58 09  84 fc f4 09 2a c8 68 cb  |ss....X.....*.h.|
-00000330  66 b0 de 2c 78 7a d4 ec  06 f1 1c 52 03 5a 69 24  |f..,xz.....R.Zi$|
-00000340  c4 e6 bb 68 f4 16 03 03  00 04 0e 00 00 00        |...h..........|
+000002c0  74 06 01 00 80 65 4e 5d  69 d6 97 39 e8 dc 13 58  |t....eN]i..9...X|
+000002d0  c1 2a cf 72 12 42 34 8c  4a c1 b5 94 44 0c f2 97  |.*.r.B4.J...D...|
+000002e0  46 ba 59 20 1c f2 9d 23  d7 2e 9f 7c 52 ac 08 fe  |F.Y ...#...|R...|
+000002f0  02 23 e3 ee ec 21 1f bd  08 8a 50 48 aa 21 b7 ed  |.#...!....PH.!..|
+00000300  be 30 be ac ff 8f e8 71  c9 bc d8 b8 56 63 8a fc  |.0.....q....Vc..|
+00000310  52 0e 3d e1 4e ce cc 53  d4 f8 36 70 1f 4e 16 61  |R.=.N..S..6p.N.a|
+00000320  14 4d dd fe 17 08 f5 09  53 9b c6 24 7d de af dc  |.M......S..$}...|
+00000330  1b 84 23 c2 72 9c 25 73  1a 4f 42 27 b5 95 b1 06  |..#.r.%s.OB'....|
+00000340  dd 36 de 0c 76 16 03 03  00 04 0e 00 00 00        |.6..v.........|
 >>> Flow 3 (client to server)
-00000000  16 03 03 00 25 10 00 00  21 20 41 d4 8d 53 2e 47  |....%...! A..S.G|
-00000010  b8 35 ba 86 3c 41 07 2e  c1 a0 9d c2 e9 11 d8 20  |.5..<A......... |
-00000020  a1 fa 0a ff 28 64 5b af  c3 67 14 03 03 00 01 01  |....(d[..g......|
-00000030  16 03 03 00 28 78 fd 19  36 4d a7 ca ab ba 06 6b  |....(x..6M.....k|
-00000040  3f a5 79 17 2f 2b ec f6  19 db 17 1a 52 ea 72 0b  |?.y./+......R.r.|
-00000050  01 af 56 8b 14 8f 8a 04  f3 ff ea fe 33           |..V.........3|
+00000000  16 03 03 00 25 10 00 00  21 20 95 a4 0d a1 cd 3a  |....%...! .....:|
+00000010  5e 81 bb e3 77 39 f0 6b  37 fe 35 e2 dc 29 6c b0  |^...w9.k7.5..)l.|
+00000020  2b e9 b9 84 1d 65 b1 63  d7 0e 14 03 03 00 01 01  |+....e.c........|
+00000030  16 03 03 00 28 13 84 cb  17 e5 aa c8 09 43 ed 1a  |....(........C..|
+00000040  08 92 55 3c e1 b8 5a c0  05 00 30 ae 63 6f 4c 78  |..U<..Z...0.coLx|
+00000050  22 42 66 18 91 85 9c 2b  c6 88 76 7d bd           |"Bf....+..v}.|
 >>> Flow 4 (server to client)
 00000000  14 03 03 00 01 01 16 03  03 00 28 00 00 00 00 00  |..........(.....|
-00000010  00 00 00 ec 99 e0 9a 83  28 94 e6 72 4f be 28 24  |........(..rO.($|
-00000020  64 bd 9d 86 79 cc ab 05  15 39 06 6e da 0c b8 4e  |d...y....9.n...N|
-00000030  6c a9 f3 17 03 03 00 25  00 00 00 00 00 00 00 01  |l......%........|
-00000040  9a d7 b0 54 dd 3c ae 8e  3f 1f 41 68 a5 01 a0 da  |...T.<..?.Ah....|
-00000050  e8 8e 90 55 1a 11 f0 70  8d a3 af a4 29 15 03 03  |...U...p....)...|
-00000060  00 1a 00 00 00 00 00 00  00 02 a8 96 cb 16 d7 b1  |................|
-00000070  41 7e bc 0e 01 8f cc 47  40 e5 c7 2a              |A~.....G@..*|
+00000010  00 00 00 fb 80 e0 2e 22  3e 45 98 c2 64 a1 0d 0a  |.......">E..d...|
+00000020  0c 55 40 6e 1b a9 de 29  e3 c8 1a b3 36 ba 5d 88  |.U@n...)....6.].|
+00000030  c0 c9 d6 17 03 03 00 25  00 00 00 00 00 00 00 01  |.......%........|
+00000040  ef 6a 01 41 ec 78 94 2d  d5 c3 48 b8 5e 57 93 34  |.j.A.x.-..H.^W.4|
+00000050  82 03 33 ae 03 22 69 9b  32 8f 71 73 6c 15 03 03  |..3.."i.2.qsl...|
+00000060  00 1a 00 00 00 00 00 00  00 02 31 37 35 60 f8 01  |..........175`..|
+00000070  5d 1f ab be 0d 79 ac c8  34 f0 14 f9              |]....y..4...|