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Test for out-of-bounds write when requesting zero bytes from shake

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Signed-off-by: Patrick Steuer <patrick.steuer@de.ibm.com>

Reviewed-by: Richard Levitte <levitte@openssl.org>
(Merged from https://github.com/openssl/openssl/pull/9433)
This commit is contained in:
Patrick Steuer 2019-08-05 16:56:14 +02:00
parent a890ef833d
commit 3ce46435e6
1 changed files with 22 additions and 0 deletions
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22
test/evp_test.c
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@ -407,6 +407,28 @@ static int digest_test_run(EVP_TEST *t)
}
if (EVP_MD_flags(expected->digest) & EVP_MD_FLAG_XOF) {
EVP_MD_CTX *mctx_cpy;
char dont[] = "touch";
if (!TEST_ptr(mctx_cpy = EVP_MD_CTX_new())) {
goto err;
}
if (!EVP_MD_CTX_copy(mctx_cpy, mctx)) {
EVP_MD_CTX_free(mctx_cpy);
goto err;
}
if (!EVP_DigestFinalXOF(mctx_cpy, (unsigned char *)dont, 0)) {
EVP_MD_CTX_free(mctx_cpy);
t->err = "DIGESTFINALXOF_ERROR";
goto err;
}
if (!TEST_str_eq(dont, "touch")) {
EVP_MD_CTX_free(mctx_cpy);
t->err = "DIGESTFINALXOF_ERROR";
goto err;
}
EVP_MD_CTX_free(mctx_cpy);
got_len = expected->output_len;
if (!EVP_DigestFinalXOF(mctx, got, got_len)) {
t->err = "DIGESTFINALXOF_ERROR";