modtrezorcrypto: add test_sign_verify_random to curve unit tests

src/tests/test_crypto_ed25519.py

@@ -43,7 +43,7 @@ class TestCryptoEd25519(unittest.TestCase):
             self.assertTrue(len(sk) == 32)
             self.assertTrue(sk[0] & 7 == 0 and sk[31] & 128 == 0 and sk[31] & 64 == 64)
 
-    def test_random(self):
+    def test_sign_verify_random(self):
         for l in range(1, 300):
             sk = ed25519.generate_secret()
             pk = ed25519.publickey(sk)

src/tests/test_crypto_nist256p1.py

@@ -5,6 +5,7 @@ import unittest
 from ubinascii import hexlify, unhexlify
 
 from trezor.crypto.curve import nist256p1
+from trezor.crypto import random
 
 class TestCryptoNist256p1(unittest.TestCase):
 
@@ -85,5 +86,13 @@ class TestCryptoNist256p1(unittest.TestCase):
             else:
                 self.assertEqual(pk33, '03' + pk[:64])
 
+    def test_sign_verify_random(self):
+        for l in range(1, 300):
+            sk = nist256p1.generate_secret()
+            pk = nist256p1.publickey(sk)
+            msg = random.bytes(l)
+            sig = nist256p1.sign(sk, msg)
+            self.assertTrue(nist256p1.verify(pk, sig, msg))
+
 if __name__ == '__main__':
     unittest.main()

src/tests/test_crypto_secp256k1.py

@@ -5,6 +5,7 @@ import unittest
 from ubinascii import hexlify, unhexlify
 
 from trezor.crypto.curve import secp256k1
+from trezor.crypto import random
 
 class TestCryptoSecp256k1(unittest.TestCase):
 
@@ -78,5 +79,13 @@ class TestCryptoSecp256k1(unittest.TestCase):
             else:
                 self.assertEqual(pk33, '03' + pk[:64])
 
+    def test_sign_verify_random(self):
+        for l in range(1, 300):
+            sk = secp256k1.generate_secret()
+            pk = secp256k1.publickey(sk)
+            msg = random.bytes(l)
+            sig = secp256k1.sign(sk, msg)
+            self.assertTrue(secp256k1.verify(pk, sig, msg))
+
 if __name__ == '__main__':
     unittest.main()