Convert PRF tests to use Ctrl

Reviewed-by: NRich Salz <rsalz@openssl.org>

test/evptests.txt

@@ -2974,48 +2974,48 @@ Ciphertext = 64a0861575861af460f062c79be643bd5e805cfd345cf389f108670ac76c8cb24c6
 # TLS1 PRF tests, from NIST test vectors
 
 KDF=TLS1-PRF
-MD=MD5-SHA1
-Secret = bded7fa5c1699c010be23dd06ada3a48349f21e5f86263d512c0c5cc379f0e780ec55d9844b2f1db02a96453513568d0
-Seed.label = "master secret"
-Seed.client_random = e5acaf549cd25c22d964c0d930fa4b5261d2507fad84c33715b7b9a864020693
-Seed.server_random = 135e4d557fdf3aa6406d82975d5c606a9734c9334b42136e96990fbd5358cdb2
+Ctrl.md = md:MD5-SHA1
+Ctrl.Secret = hexsecret:bded7fa5c1699c010be23dd06ada3a48349f21e5f86263d512c0c5cc379f0e780ec55d9844b2f1db02a96453513568d0
+Ctrl.label = seed:master secret
+Ctrl.client_random = hexseed:e5acaf549cd25c22d964c0d930fa4b5261d2507fad84c33715b7b9a864020693
+Ctrl.server_random = hexseed:135e4d557fdf3aa6406d82975d5c606a9734c9334b42136e96990fbd5358cdb2
 Output = 2f6962dfbc744c4b2138bb6b3d33054c5ecc14f24851d9896395a44ab3964efc2090c5bf51a0891209f46c1e1e998f62
 
 KDF=TLS1-PRF
-MD=MD5-SHA1
-Secret = 2f6962dfbc744c4b2138bb6b3d33054c5ecc14f24851d9896395a44ab3964efc2090c5bf51a0891209f46c1e1e998f62
-Seed.label = "key expansion"
-Seed.server_random = 67267e650eb32444119d222a368c191af3082888dc35afe8368e638c828874be
-Seed.client_random = d58a7b1cd4fedaa232159df652ce188f9d997e061b9bf48e83b62990440931f6
+Ctrl.md = md:MD5-SHA1
+Ctrl.Secret = hexsecret:2f6962dfbc744c4b2138bb6b3d33054c5ecc14f24851d9896395a44ab3964efc2090c5bf51a0891209f46c1e1e998f62
+Ctrl.label = seed:key expansion
+Ctrl.server_random = hexseed:67267e650eb32444119d222a368c191af3082888dc35afe8368e638c828874be
+Ctrl.client_random = hexseed:d58a7b1cd4fedaa232159df652ce188f9d997e061b9bf48e83b62990440931f6
 Output = 3088825988e77fce68d19f756e18e43eb7fe672433504feaf99b3c503d9091b164f166db301d70c9fc0870b4a94563907bee1a61fb786cb717576890bcc51cb9ead97e01d0a2fea99c953377b195205ff07b369589178796edc963fd80fdbe518a2fc1c35c18ae8d
 
 KDF=TLS1-PRF
-MD=SHA256
-Secret = f8938ecc9edebc5030c0c6a441e213cd24e6f770a50dda07876f8d55da062bcadb386b411fd4fe4313a604fce6c17fbc
-Seed.label = "master secret"
-Seed.client_random = 36c129d01a3200894b9179faac589d9835d58775f9b5ea3587cb8fd0364cae8c
-Seed.server_random = f6c9575ed7ddd73e1f7d16eca115415812a43c2b747daaaae043abfb50053fce
+Ctrl.md = md:SHA256
+Ctrl.Secret = hexsecret:f8938ecc9edebc5030c0c6a441e213cd24e6f770a50dda07876f8d55da062bcadb386b411fd4fe4313a604fce6c17fbc
+Ctrl.label = seed:master secret
+Ctrl.client_random = hexseed:36c129d01a3200894b9179faac589d9835d58775f9b5ea3587cb8fd0364cae8c
+Ctrl.server_random = hexseed:f6c9575ed7ddd73e1f7d16eca115415812a43c2b747daaaae043abfb50053fce
 Output = 202c88c00f84a17a20027079604787461176455539e705be730890602c289a5001e34eeb3a043e5d52a65e66125188bf
 
 KDF=TLS1-PRF
-MD=SHA256
-Secret = 202c88c00f84a17a20027079604787461176455539e705be730890602c289a5001e34eeb3a043e5d52a65e66125188bf
-Seed.label = "key expansion"
-Seed.server_random = ae6c806f8ad4d80784549dff28a4b58fd837681a51d928c3e30ee5ff14f39868
-Seed.client_random = 62e1fd91f23f558a605f28478c58cf72637b89784d959df7e946d3f07bd1b616
+Ctrl.md = md:SHA256
+Ctrl.Secret = hexsecret:202c88c00f84a17a20027079604787461176455539e705be730890602c289a5001e34eeb3a043e5d52a65e66125188bf
+Ctrl.label = seed:key expansion
+Ctrl.server_random = hexseed:ae6c806f8ad4d80784549dff28a4b58fd837681a51d928c3e30ee5ff14f39868
+Ctrl.client_random = hexseed:62e1fd91f23f558a605f28478c58cf72637b89784d959df7e946d3f07bd1b616
 Output = d06139889fffac1e3a71865f504aa5d0d2a2e89506c6f2279b670c3e1b74f531016a2530c51a3a0f7e1d6590d0f0566b2f387f8d11fd4f731cdd572d2eae927f6f2f81410b25e6960be68985add6c38445ad9f8c64bf8068bf9a6679485d966f1ad6f68b43495b10a683755ea2b858d70ccac7ec8b053c6bd41ca299d4e51928
 
 # Missing digest.
 KDF=TLS1-PRF
-Secret = 01
-Seed = 02
+Ctrl.Secret = hexsecret:01
+Ctrl.Seed = hexseed:02
 Output = 03
 Result = KDF_DERIVE_ERROR
 
 # Missing secret.
 KDF=TLS1-PRF
-MD=MD5-SHA1
-Seed = 02
+Ctrl.md = md:MD5-SHA1
+Ctrl.Seed = hexseed:02
 Output = 03
 Result = KDF_DERIVE_ERROR