Michael Müller : crypt32: Implement decoding of X509_ECC_SIGNATURE.

[Alexandre Julliard]

Module: wine
Branch: master
Commit: 718e9dce9cf49f4234fe968946136eb6f8d05d50
URL:    https://source.winehq.org/git/wine.git/?a=commit;h=718e9dce9cf49f4234fe96894...

Author: Michael Müller 
Date:   Wed Jun 20 10:37:57 2018 +0300

crypt32: Implement decoding of X509_ECC_SIGNATURE.

Signed-off-by: Nikolay Sivov 
Signed-off-by: Alexandre Julliard

---

dlls/crypt32/decode.c | 32 ++++++++++++++++++++++++++++++++
 1 file changed, 32 insertions(+)

diff --git a/dlls/crypt32/decode.c b/dlls/crypt32/decode.c
index 4f11d0d..080feec 100644
--- a/dlls/crypt32/decode.c
+++ b/dlls/crypt32/decode.c
@@ -6013,6 +6013,35 @@ static BOOL WINAPI CRYPT_AsnDecodeObjectIdentifier(DWORD dwCertEncodingType,
     return ret;
 }

+static BOOL WINAPI CRYPT_AsnDecodeEccSignature(DWORD dwCertEncodingType,
+ LPCSTR lpszStructType, const BYTE *pbEncoded, DWORD cbEncoded, DWORD dwFlags,
+ CRYPT_DECODE_PARA *pDecodePara, void *pvStructInfo, DWORD *pcbStructInfo)
+{
+    BOOL ret;
+    struct AsnDecodeSequenceItem items[] = {
+     { ASN_INTEGER, offsetof(CERT_ECC_SIGNATURE, r),
+       CRYPT_AsnDecodeUnsignedIntegerInternal, sizeof(CRYPT_UINT_BLOB), FALSE,
+       TRUE, offsetof(CERT_ECC_SIGNATURE, r.pbData), 0 },
+     { ASN_INTEGER, offsetof(CERT_ECC_SIGNATURE, s),
+       CRYPT_AsnDecodeUnsignedIntegerInternal, sizeof(CRYPT_UINT_BLOB), FALSE,
+       TRUE, offsetof(CERT_ECC_SIGNATURE, s.pbData), 0 },
+    };
+
+    __TRY
+    {
+        ret = CRYPT_AsnDecodeSequence(items, ARRAY_SIZE(items),
+         pbEncoded, cbEncoded, dwFlags, pDecodePara, pvStructInfo,
+         pcbStructInfo, NULL, NULL);
+    }
+    __EXCEPT_PAGE_FAULT
+    {
+        SetLastError(STATUS_ACCESS_VIOLATION);
+        ret = FALSE;
+    }
+    __ENDTRY
+    return ret;
+}
+
 static CryptDecodeObjectExFunc CRYPT_GetBuiltinDecoder(DWORD dwCertEncodingType,
  LPCSTR lpszStructType)
 {
@@ -6155,6 +6184,9 @@ static CryptDecodeObjectExFunc CRYPT_GetBuiltinDecoder(DWORD dwCertEncodingType,
         case LOWORD(X509_OBJECT_IDENTIFIER):
             decodeFunc = CRYPT_AsnDecodeObjectIdentifier;
             break;
+        case LOWORD(X509_ECC_SIGNATURE):
+            decodeFunc = CRYPT_AsnDecodeEccSignature;
+            break;
         }
     }
     else if (!strcmp(lpszStructType, szOID_CERT_EXTENSIONS))