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hcrypto WinCNG backend: don't leak handles on digest reinit

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Similar fix to 9518f296, but for the WinCNG EVP backend.
This commit is contained in:
Luke Howard
2018-05-11 21:06:27 +10:00
parent 9518f2965b
commit bd0b6f8c2b
1 changed files with 5 additions and 0 deletions
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5
lib/hcrypto/evp-wincng.c
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@@ -570,6 +570,11 @@ wincng_md_hash_init(BCRYPT_ALG_HANDLE hAlgorithm,
NTSTATUS status; NTSTATUS status;
ULONG cbData; ULONG cbData;
if (cng->hHash) {
BCryptDestroyHash(cng->hHash); /* allow reinitialization */
cng->hHash = (BCRYPT_HASH_HANDLE)0;
}
status = BCryptGetProperty(hAlgorithm, status = BCryptGetProperty(hAlgorithm,
BCRYPT_OBJECT_LENGTH, BCRYPT_OBJECT_LENGTH,
(PUCHAR)&cng->cbHashObject, (PUCHAR)&cng->cbHashObject,