crypto: add support for RSA-PSS keys

This commit adds support for RSA-PSS keys, including
- KeyObjects of type rsa-pss,
- key pair generation for RSA-PSS, and
- signing and verification using RSA-PSS keys.

PR-URL: https://github.com/nodejs/node/pull/26960
Reviewed-By: Sam Roberts <vieuxtech@gmail.com>
Reviewed-By: Daniel Bevenius <daniel.bevenius@gmail.com>

10 files changed, 341 insertions, 46 deletions

diff --git a/test/fixtures/keys/Makefile b/test/fixtures/keys/Makefile
index 3be2cd6655..81fe36a813 100644
--- a/test/fixtures/keys/Makefile
+++ b/test/fixtures/keys/Makefile
@@ -37,6 +37,12 @@ all: \
   rsa_public_1024.pem \
   rsa_public_2048.pem \
   rsa_public_4096.pem \
+  rsa_pss_private_2048.pem \
+  rsa_pss_private_2048_sha256_sha256_16.pem \
+  rsa_pss_private_2048_sha512_sha256_20.pem \
+  rsa_pss_public_2048.pem \
+  rsa_pss_public_2048_sha256_sha256_16.pem \
+  rsa_pss_public_2048_sha512_sha256_20.pem \
 
 #
 # Create Certificate Authority: ca1
@@ -574,6 +580,24 @@ rsa_public_2048.pem: rsa_private_2048.pem
 rsa_public_4096.pem: rsa_private_4096.pem
 	openssl rsa -in rsa_private_4096.pem -pubout -out rsa_public_4096.pem
 
+rsa_pss_private_2048.pem:
+	openssl genpkey -algorithm RSA-PSS -pkeyopt rsa_keygen_bits:2048 -pkeyopt rsa_keygen_pubexp:65537 -out rsa_pss_private_2048.pem
+
+rsa_pss_private_2048_sha256_sha256_16.pem:
+	openssl genpkey -algorithm RSA-PSS -pkeyopt rsa_keygen_bits:2048 -pkeyopt rsa_keygen_pubexp:65537 -pkeyopt rsa_pss_keygen_md:sha256 -pkeyopt rsa_pss_keygen_mgf1_md:sha256 -pkeyopt rsa_pss_keygen_saltlen:16 -out rsa_pss_private_2048_sha256_sha256_16.pem
+
+rsa_pss_private_2048_sha512_sha256_20.pem:
+	openssl genpkey -algorithm RSA-PSS -pkeyopt rsa_keygen_bits:2048 -pkeyopt rsa_keygen_pubexp:65537 -pkeyopt rsa_pss_keygen_md:sha512 -pkeyopt rsa_pss_keygen_mgf1_md:sha256 -pkeyopt rsa_pss_keygen_saltlen:20 -out rsa_pss_private_2048_sha512_sha256_20.pem
+
+rsa_pss_public_2048.pem: rsa_pss_private_2048.pem
+	openssl pkey -in rsa_pss_private_2048.pem -pubout -out rsa_pss_public_2048.pem
+
+rsa_pss_public_2048_sha256_sha256_16.pem: rsa_pss_private_2048_sha256_sha256_16.pem
+	openssl pkey -in rsa_pss_private_2048_sha256_sha256_16.pem -pubout -out rsa_pss_public_2048_sha256_sha256_16.pem
+
+rsa_pss_public_2048_sha512_sha256_20.pem: rsa_pss_private_2048_sha512_sha256_20.pem
+	openssl pkey -in rsa_pss_private_2048_sha512_sha256_20.pem -pubout -out rsa_pss_public_2048_sha512_sha256_20.pem
+
 clean:
 	rm -f *.pfx *.pem *.srl ca2-database.txt ca2-serial fake-startcom-root-serial *.print *.old fake-startcom-root-issued-certs/*.pem
 	@> fake-startcom-root-database.txt
diff --git a/test/fixtures/keys/rsa_pss_private_2048.pem b/test/fixtures/keys/rsa_pss_private_2048.pem
new file mode 100644
index 0000000000..ffca137a71
--- /dev/null
+++ b/test/fixtures/keys/rsa_pss_private_2048.pem
@@ -0,0 +1,28 @@
+-----BEGIN PRIVATE KEY-----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+-----END PRIVATE KEY-----
diff --git a/test/fixtures/keys/rsa_pss_private_2048_sha256_sha256_16.pem b/test/fixtures/keys/rsa_pss_private_2048_sha256_sha256_16.pem
new file mode 100644
index 0000000000..ea45970154
--- /dev/null
+++ b/test/fixtures/keys/rsa_pss_private_2048_sha256_sha256_16.pem
@@ -0,0 +1,29 @@
+-----BEGIN PRIVATE KEY-----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+-----END PRIVATE KEY-----
diff --git a/test/fixtures/keys/rsa_pss_private_2048_sha512_sha256_20.pem b/test/fixtures/keys/rsa_pss_private_2048_sha512_sha256_20.pem
new file mode 100644
index 0000000000..f8e898980a
--- /dev/null
+++ b/test/fixtures/keys/rsa_pss_private_2048_sha512_sha256_20.pem
@@ -0,0 +1,29 @@
+-----BEGIN PRIVATE KEY-----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+-----END PRIVATE KEY-----
diff --git a/test/fixtures/keys/rsa_pss_public_2048.pem b/test/fixtures/keys/rsa_pss_public_2048.pem
new file mode 100644
index 0000000000..ade38f20a4
--- /dev/null
+++ b/test/fixtures/keys/rsa_pss_public_2048.pem
@@ -0,0 +1,9 @@
+-----BEGIN PUBLIC KEY-----
+MIIBIDALBgkqhkiG9w0BAQoDggEPADCCAQoCggEBAMuDjHUvOD5YCOQkS23W7nfU
+bu76axa9mDTVJnU+w92IAKYr/Ao8yly4lQ52zBE/pcJrWoPxHGbMVQiqL7Lt9KWA
+Ega4hzojFWLovfmWiaEPciOpToxtUW7lASVzUoxwScagapnIGTm9ZnUa/3l86QDF
+id4X7i6I1Nvs1Eid/673qXqXCxRtqvZwNPjybJCez54dy9MnZ791N4XbjJ+TlX5v
+ycdRT8maQ9fOLSX3/jfjGN7N4SHH7jpy/T5eETxnmkwuE9aOOtDWhumxu3NloYOj
+TmlYGhSGojW600zQqVY3k8mpbE12JUEN4Yio7LdEO6XxRJCQ6PKoqi2ndTLJefcC
+AwEAAQ==
+-----END PUBLIC KEY-----
diff --git a/test/fixtures/keys/rsa_pss_public_2048_sha256_sha256_16.pem b/test/fixtures/keys/rsa_pss_public_2048_sha256_sha256_16.pem
new file mode 100644
index 0000000000..9f8e15bbe0
--- /dev/null
+++ b/test/fixtures/keys/rsa_pss_public_2048_sha256_sha256_16.pem
@@ -0,0 +1,10 @@
+-----BEGIN PUBLIC KEY-----
+MIIBUjA9BgkqhkiG9w0BAQowMKANMAsGCWCGSAFlAwQCAaEaMBgGCSqGSIb3DQEB
+CDALBglghkgBZQMEAgGiAwIBEAOCAQ8AMIIBCgKCAQEA36jTOAvkLQ+94iC6jpKn
+1fIWtztfY6V/FLoyJNWe9m227sBM4dPrAcNHQ9DfAoJF53jzhBHequxzZm8gjaka
+QyujQ72gjA1oBGg/z5R5EZ7byofNSF0jAuYpo0XznGSBPxp8O4fLWp2m9J++fjg7
+yya5hFlBtqu/SJtZljMe0qaHfjaelxGPuyO5wFFFor69+WMeQ3ssWPK8RRqbC7Rr
+IuyTUDuGh8ngaY/Lc9BYb9t7j8sBNpxpjx355F1m603Bxm82AYBG3kh/SlJEcHM6
+g1zTj4bX2hBxBU5tDKHigpyXtVTo0ssHr++3VdSmX6VYdyodGUUCHvWDlSYY+JTM
+dwIDAQAB
+-----END PUBLIC KEY-----
diff --git a/test/fixtures/keys/rsa_pss_public_2048_sha512_sha256_20.pem b/test/fixtures/keys/rsa_pss_public_2048_sha512_sha256_20.pem
new file mode 100644
index 0000000000..9ace7d6d2d
--- /dev/null
+++ b/test/fixtures/keys/rsa_pss_public_2048_sha512_sha256_20.pem
@@ -0,0 +1,10 @@
+-----BEGIN PUBLIC KEY-----
+MIIBTTA4BgkqhkiG9w0BAQowK6ANMAsGCWCGSAFlAwQCA6EaMBgGCSqGSIb3DQEB
+CDALBglghkgBZQMEAgEDggEPADCCAQoCggEBALzPTYDAg6suXao+VGtnGXHOM1a/
+nwhd+G2Z+tzgXmBvEUySjN49+pTv8mprXw3LQ4W/O2+OQkuoqRK/CeeyPVheeUzZ
+4LJ+hjaV4MAHtHhV1JyqJ7qpxhAu8fK975AIPfTwSoQLRXOaE2mmQwBSjM3OXSAv
+ydGPpMYaowjzSNMnUIGZiga5mIzPXL2zmIEUC9dBq1niflx5NhN93p3WhfuHcI4M
+q8yJ7f5ejk5Igi/BefSf4bZNRj67vQU+sOcjkv7x+quhQ+ros1C1c58rXZR44J61
+WhyZrKlY62EGvTgGY/Rga03pQVr0PW+vhQR1BRwafB0qfNpVgmU4T63Gf0MCAwEA
+AQ==
+-----END PUBLIC KEY-----
diff --git a/test/fixtures/test_unknown_privkey.pem b/test/fixtures/test_unknown_privkey.pem
deleted file mode 100644
index 4e8e46f041..0000000000
--- a/test/fixtures/test_unknown_privkey.pem
+++ /dev/null
@@ -1,28 +0,0 @@
------BEGIN PRIVATE KEY-----
-MIIEugIBADALBgkqhkiG9w0BAQoEggSmMIIEogIBAAKCAQEAwMSNbT9SbSHvXmPt
-j1x2Ipk1tUM06301UD91xGcA0232zrIQcKjsPM7bE6YXN0zRxfLJUqalewCk80Ct
-6V+E5XtMHUFQt1Ne8HW9U930KnfnQEyU8UwRPoWWeZQhs+sa8ZfggtfN7gq4/wiS
-KFNNtSJb24NKoLis31P0nILGC4/JewgE0QaFUoOL+Oc3dMhwWg9/H64sSjhI/SGW
-9Sv3M6WcSn7vQCe8oM2vslf3Xm8rHNqZMlXujs7zhRtcr5alKz9BwMJIoGouQrk9
-9cgupdYsddgNh2bC4TQR9BMKHj8tV5Uf3Pbf4EoZOFffCbyBZxmKtsYsmhh2FDLA
-RzNhKwIDAQABAoIBAHBRlj4ziSmBfmG3Q/ImY8chEkQ9lpYn7GqHr2zyv25yQj6J
-Tj72jj+YH9pBCoH0Rr5aCqgX5Y/X/kSmSS8TsvGrd9wL9KX88/KUB+7YAq7EEoBK
-nvZB5kJRwC2y/DhDIv3mCrDyYVDz+nrPWaoZb8u861zqEQ+4yzGNT5fqMs8Ewm8A
-hxg3GA2R6FC2CymZO884XOxlVac6SNURfA+U+xrcMIXbXpok2Z5eh/kMOeIKwmL0
-QEO0U6DEnZm4rJjywu8fEkKbX00YfaDQaiGzRZfvmzkTPIQemXPWARdIvFtJU8Fx
-OWWeMumJD1KiU9ISW4e76l7F8UOviT6jEg9rxFECgYEA96WCEIB+O4aO7+s56kOv
-vQkEXn959lz7e++S9AV3R19PpBCh50l5v9NSjGQlA4FU4AdBB5EmiX/bLZRHFwHI
-KLDsMFuq9id3OPHYIzFP4YjVHTGRPZToJHwy4ePIdZEaeJHY39EEz8oHsSSJlLdm
-o0417RsFAfApW2VN63c3JFcCgYEAx0Um/ATsT4ELguVQ+XlquLQdS12XS7zjcwWv
-PL8UyooSxcjcbLcJB6DRWXM0NOry7KPUCIF4m3KSjIZypV/v2KVFPCfD3vxZcdB7
-xgccqXJMUx7MSs9AMZXTtv5hG7RS5z+ig7Yi/6nzBm21jKYKbFDbqfq8MSfiR6cT
-KjR+RU0CgYAm/iFnlcPKfZpd/mylDTlLi3Lrqii6+NMEJam+0GmCjGhOzeugLjqE
-ULLLtiz5y1Bg4eOEXH9z4PTSzWkQH1Czz3+w8Y4OqhIknjfI+se4HEJqEVbsGlke
-/YtJdAMpN8qyN0ytmQyn5wilBLrA9surZPIqvjlgn77zTBUjwSamiwKBgAqIVS8s
-83CgWYNpq4YELOfmXUYGhGC0czE5M7H6R5cNBUD/BOeaJRgKIAaiWDgT0xM+9Y4d
-icptm+Fhmd2z3HGPCsHLOEco/3FMm74z0ggCypX6IsIxgiscyDv75hYYyej/LA/a
-KK9qxDWqxtXQUOy4uWOapSfT+9ndst2gOKxhAoGAVFcfedCLxummgTtZE91n59pL
-TWTk4GgYpWyv6XbHjYrFW2y18qmn0hmEpO+440So0NmGGDtNnPYNUKY/MPjHScwC
-FoZMFqqnkmshXz0uDx3gMQK2JDmdF+s3VwZq4Rtb3NJ9v4/WMgWftxaUpAm1/aRC
-IHc67mAAez4i8fg2wTQ=
------END PRIVATE KEY-----
diff --git a/test/parallel/test-crypto-key-objects.js b/test/parallel/test-crypto-key-objects.js
index 8d4767f617..ab9005f859 100644
--- a/test/parallel/test-crypto-key-objects.js
+++ b/test/parallel/test-crypto-key-objects.js
@@ -8,6 +8,8 @@ const assert = require('assert');
 const {
   createCipheriv,
   createDecipheriv,
+  createSign,
+  createVerify,
   createSecretKey,
   createPublicKey,
   createPrivateKey,
@@ -178,13 +180,6 @@ const privateDsa = fixtures.readKey('dsa_private_encrypted_1025.pem',
   });
 }
 
-{
-  // This should not cause a crash: https://github.com/nodejs/node/pull/26786
-  const pem = fixtures.readSync('test_unknown_privkey.pem', 'ascii');
-  const key = createPrivateKey(pem);
-  assert.strictEqual(key.asymmetricKeyType, undefined);
-}
-
 [
   { private: fixtures.readSync('test_ed25519_privkey.pem', 'ascii'),
     public: fixtures.readSync('test_ed25519_pubkey.pem', 'ascii'),
@@ -264,6 +259,146 @@ const privateDsa = fixtures.readKey('dsa_private_encrypted_1025.pem',
   assert.strictEqual(privateKey.type, 'private');
   assert.strictEqual(privateKey.asymmetricKeyType, 'dsa');
   assert.strictEqual(privateKey.symmetricKeySize, undefined);
+
+}
+
+{
+  // Test RSA-PSS.
+  {
+    // This key pair does not restrict the message digest algorithm or salt
+    // length.
+    const publicPem = fixtures.readKey('rsa_pss_public_2048.pem');
+    const privatePem = fixtures.readKey('rsa_pss_private_2048.pem');
+
+    const publicKey = createPublicKey(publicPem);
+    const privateKey = createPrivateKey(privatePem);
+
+    assert.strictEqual(publicKey.type, 'public');
+    assert.strictEqual(publicKey.asymmetricKeyType, 'rsa-pss');
+
+    assert.strictEqual(privateKey.type, 'private');
+    assert.strictEqual(privateKey.asymmetricKeyType, 'rsa-pss');
+
+    for (const key of [privatePem, privateKey]) {
+      // Any algorithm should work.
+      for (const algo of ['sha1', 'sha256']) {
+        // Any salt length should work.
+        for (const saltLength of [undefined, 8, 10, 12, 16, 18, 20]) {
+          const signature = createSign(algo)
+                            .update('foo')
+                            .sign({ key, saltLength });
+
+          for (const pkey of [key, publicKey, publicPem]) {
+            const okay = createVerify(algo)
+                         .update('foo')
+                         .verify({ key: pkey, saltLength }, signature);
+
+            assert.ok(okay);
+          }
+        }
+      }
+    }
+
+    // Exporting the key using PKCS#1 should not work since this would discard
+    // any algorithm restrictions.
+    common.expectsError(() => {
+      publicKey.export({ format: 'pem', type: 'pkcs1' });
+    }, {
+      code: 'ERR_CRYPTO_INCOMPATIBLE_KEY_OPTIONS'
+    });
+  }
+
+  {
+    // This key pair enforces sha256 as the message digest and the MGF1
+    // message digest and a salt length of at least 16 bytes.
+    const publicPem =
+      fixtures.readKey('rsa_pss_public_2048_sha256_sha256_16.pem');
+    const privatePem =
+      fixtures.readKey('rsa_pss_private_2048_sha256_sha256_16.pem');
+
+    const publicKey = createPublicKey(publicPem);
+    const privateKey = createPrivateKey(privatePem);
+
+    assert.strictEqual(publicKey.type, 'public');
+    assert.strictEqual(publicKey.asymmetricKeyType, 'rsa-pss');
+
+    assert.strictEqual(privateKey.type, 'private');
+    assert.strictEqual(privateKey.asymmetricKeyType, 'rsa-pss');
+
+    for (const key of [privatePem, privateKey]) {
+      // Signing with anything other than sha256 should fail.
+      assert.throws(() => {
+        createSign('sha1').sign(key);
+      }, /digest not allowed/);
+
+      // Signing with salt lengths less than 16 bytes should fail.
+      for (const saltLength of [8, 10, 12]) {
+        assert.throws(() => {
+          createSign('sha1').sign({ key, saltLength });
+        }, /pss saltlen too small/);
+      }
+
+      // Signing with sha256 and appropriate salt lengths should work.
+      for (const saltLength of [undefined, 16, 18, 20]) {
+        const signature = createSign('sha256')
+                          .update('foo')
+                          .sign({ key, saltLength });
+
+        for (const pkey of [key, publicKey, publicPem]) {
+          const okay = createVerify('sha256')
+                       .update('foo')
+                       .verify({ key: pkey, saltLength }, signature);
+
+          assert.ok(okay);
+        }
+      }
+    }
+  }
+
+  {
+    // This key enforces sha512 as the message digest and sha256 as the MGF1
+    // message digest.
+    const publicPem =
+      fixtures.readKey('rsa_pss_public_2048_sha512_sha256_20.pem');
+    const privatePem =
+      fixtures.readKey('rsa_pss_private_2048_sha512_sha256_20.pem');
+
+    const publicKey = createPublicKey(publicPem);
+    const privateKey = createPrivateKey(privatePem);
+
+    assert.strictEqual(publicKey.type, 'public');
+    assert.strictEqual(publicKey.asymmetricKeyType, 'rsa-pss');
+
+    assert.strictEqual(privateKey.type, 'private');
+    assert.strictEqual(privateKey.asymmetricKeyType, 'rsa-pss');
+
+    // Node.js usually uses the same hash function for the message and for MGF1.
+    // However, when a different MGF1 message digest algorithm has been
+    // specified as part of the key, it should automatically switch to that.
+    // This behavior is required by sections 3.1 and 3.3 of RFC4055.
+    for (const key of [privatePem, privateKey]) {
+      // sha256 matches the MGF1 hash function and should be used internally,
+      // but it should not be permitted as the main message digest algorithm.
+      for (const algo of ['sha1', 'sha256']) {
+        assert.throws(() => {
+          createSign(algo).sign(key);
+        }, /digest not allowed/);
+      }
+
+      // sha512 should produce a valid signature.
+      const signature = createSign('sha512')
+                        .update('foo')
+                        .sign(key);
+
+      for (const pkey of [key, publicKey, publicPem]) {
+        const okay = createVerify('sha512')
+                     .update('foo')
+                     .verify(pkey, signature);
+
+        assert.ok(okay);
+      }
+    }
+  }
 }
 
 {
diff --git a/test/parallel/test-crypto-keygen.js b/test/parallel/test-crypto-keygen.js
index 66840dd43d..d327c7a078 100644
--- a/test/parallel/test-crypto-keygen.js
+++ b/test/parallel/test-crypto-keygen.js
@@ -6,12 +6,15 @@ if (!common.hasCrypto)
 
 const assert = require('assert');
 const {
+  constants,
   createSign,
   createVerify,
   generateKeyPair,
   generateKeyPairSync,
   publicEncrypt,
-  privateDecrypt
+  privateDecrypt,
+  sign,
+  verify
 } = require('crypto');
 const { promisify } = require('util');
 
@@ -40,13 +43,24 @@ function testEncryptDecrypt(publicKey, privateKey) {
 
 // Tests that a key pair can be used for signing / verification.
 function testSignVerify(publicKey, privateKey) {
-  const message = 'Hello Node.js world!';
-  const signature = createSign('SHA256').update(message)
-                                        .sign(privateKey, 'hex');
-  for (const key of [publicKey, privateKey]) {
-    const okay = createVerify('SHA256').update(message)
-                                       .verify(key, signature, 'hex');
-    assert(okay);
+  const message = Buffer.from('Hello Node.js world!');
+
+  function oldSign(algo, data, key) {
+    return createSign(algo).update(data).sign(key);
+  }
+
+  function oldVerify(algo, data, key, signature) {
+    return createVerify(algo).update(data).verify(key, signature);
+  }
+
+  for (const signFn of [sign, oldSign]) {
+    const signature = signFn('SHA256', message, privateKey);
+    for (const verifyFn of [verify, oldVerify]) {
+      for (const key of [publicKey, privateKey]) {
+        const okay = verifyFn('SHA256', message, key, signature);
+        assert(okay);
+      }
+    }
   }
 }
 
@@ -252,6 +266,43 @@ const sec1EncExp = (cipher) => getRegExpForPEM('EC PRIVATE KEY', cipher);
 }
 
 {
+  // Test RSA-PSS.
+  generateKeyPair('rsa-pss', {
+    modulusLength: 512,
+    saltLength: 16,
+    hash: 'sha256',
+    mgf1Hash: 'sha256'
+  }, common.mustCall((err, publicKey, privateKey) => {
+    assert.ifError(err);
+
+    assert.strictEqual(publicKey.type, 'public');
+    assert.strictEqual(publicKey.asymmetricKeyType, 'rsa-pss');
+
+    assert.strictEqual(privateKey.type, 'private');
+    assert.strictEqual(privateKey.asymmetricKeyType, 'rsa-pss');
+
+    // Unlike RSA, RSA-PSS does not allow encryption.
+    assert.throws(() => {
+      testEncryptDecrypt(publicKey, privateKey);
+    }, /operation not supported for this keytype/);
+
+    // RSA-PSS also does not permit signing with PKCS1 padding.
+    assert.throws(() => {
+      testSignVerify({
+        key: publicKey,
+        padding: constants.RSA_PKCS1_PADDING
+      }, {
+        key: privateKey,
+        padding: constants.RSA_PKCS1_PADDING
+      });
+    }, /illegal or unsupported padding mode/);
+
+    // The padding should correctly default to RSA_PKCS1_PSS_PADDING now.
+    testSignVerify(publicKey, privateKey);
+  }));
+}
+
+{
   const privateKeyEncoding = {
     type: 'pkcs8',
     format: 'der'
@@ -440,9 +491,7 @@ const sec1EncExp = (cipher) => getRegExpForPEM('EC PRIVATE KEY', cipher);
   common.expectsError(() => generateKeyPairSync('rsa2', {}), {
     type: TypeError,
     code: 'ERR_INVALID_ARG_VALUE',
-    message: "The argument 'type' must be one of " +
-             "'rsa', 'dsa', 'ec', 'ed25519', 'ed448'," +
-             " 'x25519', 'x448'. Received 'rsa2'"
+    message: "The argument 'type' must be a supported key type. Received 'rsa2'"
   });
 }