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Fail serialization of finalized MD contexts

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Add tests to verify that `EVP_MD_CTX_serialize` and
`EVP_MD_CTX_deserialize` fail when called on a finalized `EVP_MD_CTX`.

A finalized context is in a terminal state and should not be serializable for
resumption or have a new state deserialized into it. These tests confirm the
expected failure behavior.

Signed-off-by: Simo Sorce <simo@redhat.com>

Reviewed-by: Shane Lontis <shane.lontis@oracle.com>
Reviewed-by: Tomas Mraz <tomas@openssl.org>
Reviewed-by: Dmitry Belyavskiy <beldmit@gmail.com>
(Merged from https://github.com/openssl/openssl/pull/28837)
This commit is contained in:
Simo Sorce
2025-11-21 16:08:35 -05:00
committed by Dmitry Belyavskiy
parent a010fde5b6
commit 2d5c98c30a
1 changed files with 6 additions and 0 deletions
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6
test/evp_extra_test2.c
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@@ -3442,6 +3442,7 @@ static int test_evp_md_ctx_serialize(int tstid)
EVP_MD *md = NULL;
unsigned char *buf = NULL;
size_t buflen;
size_t tmplen;
unsigned char d1[EVP_MAX_MD_SIZE], d2[EVP_MAX_MD_SIZE];
unsigned int d1_len, d2_len;
int ret = 0;
@@ -3481,6 +3482,11 @@ static int test_evp_md_ctx_serialize(int tstid)
|| !TEST_mem_eq(d1, d1_len, d2, d2_len))
goto end;
/* Check that serialization fails on finalized contexts */
if (!TEST_false(EVP_MD_CTX_serialize(mdctx1, NULL, &tmplen))
|| !TEST_false(EVP_MD_CTX_deserialize(mdctx1, buf, buflen)))
goto end;
ret = 1;
end: