10:09 a.m.
Include known-good ciphertext and make sure it can be correctly
decrypted. Also confirm that corrupted ciphertext triggers a
decryption error.
---
unit/test-cipher.c | 36 ++++++++++++++++++++++++++++++++++++
1 file changed, 36 insertions(+)
diff --git a/unit/test-cipher.c b/unit/test-cipher.c
index 23021bf..30fe64a 100644
--- a/unit/test-cipher.c
+++ b/unit/test-cipher.c
@@ -180,6 +180,29 @@ static uint8_t rsa_priv_key[] = {
0x05, 0x3e, 0x55, 0x14, 0xd9, 0xe4, 0xa4, 0x7f, 0xb7, 0x4f
};
+/* Reference ciphertext:
+ * $ openssl rsautl -in fixed_str -inkey privkey.der -keyform DER -encrypt \
+ * > -pkcs -out ciphertext
+ * $ xxd -i ciphertext
+ *
+ * where fixed_str is a file containing the first 100 characters of
+ * FIXED_STR (above) and privkey.der contains the binary data from the
+ * rsa_priv_key array.
+ */
+static uint8_t ciphertext[128] = {
+ 0x50, 0x86, 0x87, 0x72, 0x37, 0xc1, 0xc7, 0x99, 0xa9, 0xff, 0x56, 0x92,
+ 0x9b, 0x8a, 0xf6, 0x31, 0x9b, 0x11, 0x2c, 0x27, 0x1c, 0xa9, 0x07, 0x9b,
+ 0xac, 0xb9, 0x31, 0xcd, 0xc1, 0x10, 0x90, 0xd7, 0x3c, 0xa1, 0x43, 0xa1,
+ 0xdb, 0xb2, 0x67, 0x48, 0x28, 0xac, 0x0e, 0xbd, 0xd4, 0x62, 0x6b, 0xbd,
+ 0x81, 0xf9, 0x5b, 0xd0, 0x29, 0xe5, 0xc8, 0x9a, 0x71, 0x69, 0xd1, 0x61,
+ 0x72, 0x95, 0xa5, 0x10, 0x83, 0xee, 0xb4, 0x6d, 0x79, 0xf8, 0xae, 0xe1,
+ 0x49, 0xdd, 0x5b, 0x1f, 0x4d, 0x2e, 0xd7, 0xa9, 0xf0, 0xf0, 0x81, 0x01,
+ 0x38, 0x58, 0x78, 0x0f, 0x89, 0x3d, 0x60, 0xdb, 0x99, 0x19, 0xb0, 0x14,
+ 0x9d, 0xf7, 0xc8, 0x6e, 0xc3, 0x69, 0xdd, 0xb2, 0xcc, 0x07, 0x32, 0x3b,
+ 0x88, 0xd3, 0xfa, 0x72, 0xe9, 0xaa, 0x66, 0xc5, 0xd3, 0x4a, 0xff, 0x87,
+ 0x6a, 0x78, 0x05, 0x2d, 0x16, 0x7c, 0x98, 0x58
+};
+
static void test_rsa(const void *data)
{
struct l_asymmetric_cipher *cipher;
@@ -198,9 +221,22 @@ static void test_rsa(const void *data)
decrypted = l_asymmetric_cipher_decrypt(cipher, buf, buf, 128, 128);
assert(decrypted == 100);
+ assert(!memcmp(FIXED_STR, buf, 100));
+ /* Decrypt reference ciphertext */
+ memset(buf, 0, 128);
+ decrypted = l_asymmetric_cipher_decrypt(cipher, ciphertext, buf,
+ 128, 128);
+ assert(decrypted == 100);
assert(!memcmp(FIXED_STR, buf, 100));
+ /* Decrypt corrupted ciphertext */
+ ciphertext[0] = ciphertext[0] ^ (uint8_t)0xFF;
+ memset(buf, 0, 128);
+ decrypted = l_asymmetric_cipher_decrypt(cipher, ciphertext, buf,
+ 128, 128);
+ assert(decrypted < 0);
+
l_asymmetric_cipher_free(cipher);
}
--
2.8.4