tpm2-tss/0002-FAPI-Remove-useless-code-get_engine.patch

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From 53a5ba5c8476097fb5145cee4bed61b82d0cc225 Mon Sep 17 00:00:00 2001
From: Juergen Repp <juergen.repp@sit.fraunhofer.de>
Date: Mon, 7 Jun 2021 09:47:30 +0200
Subject: [PATCH 02/23] FAPI: Remove useless code get_engine.
The function did always return NULL. So the default engine was used.
Fixes #2085
Signed-off-by: Juergen Repp <juergen.repp@sit.fraunhofer.de>
---
src/tss2-fapi/fapi_crypto.c | 22 +---------------------
1 file changed, 1 insertion(+), 21 deletions(-)
diff --git a/src/tss2-fapi/fapi_crypto.c b/src/tss2-fapi/fapi_crypto.c
index c50b5f0a..9c7e566c 100644
--- a/src/tss2-fapi/fapi_crypto.c
+++ b/src/tss2-fapi/fapi_crypto.c
@@ -56,9 +56,6 @@ typedef struct _IFAPI_CRYPTO_CONTEXT {
size_t hashSize;
} IFAPI_CRYPTO_CONTEXT;
-/** A singleton crypto engine for hash operations */
-static ENGINE *engine = NULL;
-
/**
* Returns the signature scheme that is currently used in the FAPI context.
*
@@ -228,23 +225,6 @@ ifapi_bn2binpad(const BIGNUM *bn, unsigned char *bin, int binSize)
return 1;
}
-/**
- * Returns the singleton hash engine for the use in ifapi_hash operations. If
- * it does not yet exist, this function creates it.
- *
- * @retval A singleton hash engine
- */
-static ENGINE *
-get_engine()
-{
- /* If an engine is present, it is returned */
- if (engine)
- return engine;
- /* Otherwise, engine is created and returned */
- engine = ENGINE_by_id(NULL);
- return engine;
-}
-
/**
* Returns a suitable openSSL hash algorithm identifier for a given TSS hash
* algorithm identifier.
@@ -1558,7 +1538,7 @@ ifapi_crypto_hash_start(IFAPI_CRYPTO_CONTEXT_BLOB **context,
}
if (1 != EVP_DigestInit_ex(mycontext->osslContext,
- mycontext->osslHashAlgorithm, get_engine())) {
+ mycontext->osslHashAlgorithm, NULL)) {
goto_error(r, TSS2_FAPI_RC_GENERAL_FAILURE, "Error EVP_DigestInit_ex",
cleanup);
}
--
2.34.3