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siv: return error if key is not set

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Avoid encryption or decryption using uninitialized data, or causing a
crash, if a key was not set for the SIV instance.
This commit is contained in:
Miroslav Lichvar
2020-09-09 14:00:32 +02:00
parent 9820c22c1d
commit 2bb88b45c6
3 changed files with 27 additions and 0 deletions
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11
test/unit/siv.c
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@@ -149,6 +149,17 @@ test_unit(void)
TEST_CHECK(SIV_GetKeyLength(tests[i].algorithm) == tests[i].key_length);
r = SIV_Encrypt(siv, tests[i].nonce, tests[i].nonce_length,
tests[i].assoc, tests[i].assoc_length,
tests[i].plaintext, tests[i].plaintext_length,
ciphertext, tests[i].ciphertext_length);
TEST_CHECK(!r);
r = SIV_Decrypt(siv, tests[i].nonce, tests[i].nonce_length,
tests[i].assoc, tests[i].assoc_length,
tests[i].ciphertext, tests[i].ciphertext_length,
plaintext, tests[i].plaintext_length);
TEST_CHECK(!r);
for (j = -1; j < 1024; j++) {
r = SIV_SetKey(siv, tests[i].key, j);
TEST_CHECK(r == (j == tests[i].key_length));