[webcrypto] Implement RSA-PSS using BoringSSL.

content/test/data/webcrypto/rsa_pss.json

Index: content/test/data/webcrypto/rsa_pss.json
diff --git a/content/test/data/webcrypto/rsa_pss.json b/content/test/data/webcrypto/rsa_pss.json
new file mode 100644
index 0000000000000000000000000000000000000000..dd5f76a1caaa28619fb7065182fda5dd7bdeef57
--- /dev/null
+++ b/content/test/data/webcrypto/rsa_pss.json
@@ -0,0 +1,35 @@
+// TODO(eroman): Add tests with a digest other than SHA-1.
+{  
+  // This contains known answer tests for verify operation of RSA-PSS.
+
+  // Although the following looks like JWK it is in NOT.
+  // The difference is that the components are expressed in hexadecimal rather
+  // than base64.
+
+  // The keys are in SPKI format.
+  "keys": {
+    "key1": "30819F300D06092A864886F70D010101050003818D0030818902818100A56E4A0E701017589A5187DC7EA841D156F2EC0E36AD52A44DFEB1E61F7AD991D8C51056FFEDB162B4C0F283A12A88A394DFF526AB7291CBB307CEABFCE0B1DFD5CD9508096D5B2B8B6DF5D671EF6377C0921CB23C270A70E2598E6FF89D19F105ACC2D3F0CB35F29280E1386B6F64C4EF22E1E1F20D0CE8CFFB2249BD9A21370203010001"
+  },
+
+  "tests": [
+    // Example 1.1 from 
+    // ftp://ftp.rsasecurity.com/pub/pkcs/pkcs-1/pkcs-1v2-1-vec.zip (pss-vect.txt)
+    {
+      "hash": "sha-1",
+      "key": "key1",
+      "message": "cdc87da223d786df3b45e0bbbc721326d1ee2af806cc315475cc6f0d9c66e1b62371d45ce2392e1ac92844c310102f156a0d8d52c1f4c40ba3aa65095786cb769757a6563ba958fed0bcc984e8b517a3d5f515b23b8a41e74aa867693f90dfb061a6e86dfaaee64472c00e5f20945729cbebe77f06ce78e08f4098fba41f9d6193c0317e8b60d4b6084acb42d29e3808a3bc372d85e331170fcbf7cc72d0b71c296648b3a4d10f416295d0807aa625cab2744fd9ea8fd223c42537029828bd16be02546f130fd2e33b936d2676e08aed1b73318b750a0167d0",
+      "saltLength": 20,
+      "signature": "9074308fb598e9701b2294388e52f971faac2b60a5145af185df5287b5ed2887e57ce7fd44dc8634e407c8e0e4360bc226f3ec227f9d9e54638e8d31f5051215df6ebb9c2f9579aa77598a38f914b5b9c1bd83c4e2f9f382a0d0aa3542ffee65984a601bc69eb28deb27dca12c82c2d4c3f66cd500f1ff2b994d8a4e30cbb33c"
+    },
+
+    // Example 1.4 from 
+    // ftp://ftp.rsasecurity.com/pub/pkcs/pkcs-1/pkcs-1v2-1-vec.zip (pss-vect.txt)
+    {
+      "hash": "sha-1",
+      "key": "key1",
+      "message": "bc656747fa9eafb3f0",
+      "saltLength": 20,
+      "signature": "4609793b23e9d09362dc21bb47da0b4f3a7622649a47d464019b9aeafe53359c178c91cd58ba6bcb78be0346a7bc637f4b873d4bab38ee661f199634c547a1ad8442e03da015b136e543f7ab07c0c13e4225b8de8cce25d4f6eb8400f81f7e1833b7ee6e334d370964ca79fdb872b4d75223b5eeb08101591fb532d155a6de87"
+    }
+  ]
+}