[edk2-devel] [PATCH 2/4] CryptoPkg/BaseCryptLib: avoid using SHA256()

[Gerd Hoffmann]

In openssl 3.0 SHA256() goes through the provider logic,
requiring a huge amount of openssl code.  The individual
functions do not, so use them instead.

Signed-off-by: Gerd Hoffmann <kra...@redhat.com>
---
 .../Library/BaseCryptLib/Hash/CryptSha256.c      | 16 +++++++++++++---
 1 file changed, 13 insertions(+), 3 deletions(-)

diff --git a/CryptoPkg/Library/BaseCryptLib/Hash/CryptSha256.c 
b/CryptoPkg/Library/BaseCryptLib/Hash/CryptSha256.c
index f105e6e57708..4d7d92812c4d 100644
--- a/CryptoPkg/Library/BaseCryptLib/Hash/CryptSha256.c
+++ b/CryptoPkg/Library/BaseCryptLib/Hash/CryptSha256.c
@@ -202,6 +202,8 @@ Sha256HashAll (
   OUT  UINT8       *HashValue
   )
 {
+  SHA256_CTX  Context;
+
   //
   // Check input parameters.
   //
@@ -216,9 +218,17 @@ Sha256HashAll (
   //
   // OpenSSL SHA-256 Hash Computation.
   //
-  if (SHA256 (Data, DataSize, HashValue) == NULL) {
+  if (!SHA256_Init (&Context)) {
     return FALSE;
-  } else {
-    return TRUE;
   }
+
+  if (!SHA256_Update (&Context, Data, DataSize)) {
+    return FALSE;
+  }
+
+  if (!SHA256_Final (HashValue, &Context)) {
+    return FALSE;
+  }
+
+  return TRUE;
 }
-- 
2.39.1



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