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hcrypto PKCS#11 backend: allow digest update with NULL (#378)

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In the PKCS#11 backend, add an assertion check to p11_md_update()
to validate that the data length is zero if the data is NULL.
This commit is contained in:
Luke Howard
2018-05-11 13:50:38 +10:00
parent 590be3d7da
commit 6a1bb95323
1 changed files with 1 additions and 0 deletions
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1
lib/hcrypto/evp-pkcs11.c
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@@ -387,6 +387,7 @@ p11_md_update(EVP_MD_CTX *ctx, const void *data, size_t length)
CK_RV rv; CK_RV rv;
assert(p11_module != NULL); assert(p11_module != NULL);
assert(data != NULL || length == 0);
rv = p11_module->C_DigestUpdate(p11ctx->hSession, rv = p11_module->C_DigestUpdate(p11ctx->hSession,
data ? (CK_BYTE_PTR)data : (CK_BYTE_PTR)"", data ? (CK_BYTE_PTR)data : (CK_BYTE_PTR)"",