From da3eeb4bd5a7f61b8e4a155b9114a39d354dd7b3 Mon Sep 17 00:00:00 2001
From: Juan Lang <juan_lang@yahoo.com>
Date: Fri, 28 Jul 2006 17:26:24 -0700
Subject: [PATCH] crypt32: Implement CryptHashPublicKeyInfo.

---
 dlls/crypt32/cert.c       | 38 ++++++++++++++++++++++++++++++++++++++
 dlls/crypt32/crypt32.spec |  2 +-
 dlls/crypt32/tests/cert.c | 33 +++++++++++++++++++++++++++++++++
 include/wincrypt.h        |  4 ++++
 4 files changed, 76 insertions(+), 1 deletion(-)

diff --git a/dlls/crypt32/cert.c b/dlls/crypt32/cert.c
index 6297e722f0e..b131f11d704 100644
--- a/dlls/crypt32/cert.c
+++ b/dlls/crypt32/cert.c
@@ -1115,6 +1115,44 @@ BOOL WINAPI CryptHashCertificate(HCRYPTPROV hCryptProv, ALG_ID Algid,
     return ret;
 }
 
+BOOL WINAPI CryptHashPublicKeyInfo(HCRYPTPROV hCryptProv, ALG_ID Algid,
+ DWORD dwFlags, DWORD dwCertEncodingType, PCERT_PUBLIC_KEY_INFO pInfo,
+ BYTE *pbComputedHash, DWORD *pcbComputedHash)
+{
+    BOOL ret = TRUE;
+    HCRYPTHASH hHash = 0;
+
+    TRACE("(%ld, %d, %08lx, %ld, %p, %p, %p)\n", hCryptProv, Algid, dwFlags,
+     dwCertEncodingType, pInfo, pbComputedHash, pcbComputedHash);
+
+    if (!hCryptProv)
+        hCryptProv = CRYPT_GetDefaultProvider();
+    if (!Algid)
+        Algid = CALG_MD5;
+    if (ret)
+    {
+        BYTE *buf;
+        DWORD size = 0;
+
+        ret = CryptEncodeObjectEx(dwCertEncodingType, X509_PUBLIC_KEY_INFO,
+         pInfo, CRYPT_ENCODE_ALLOC_FLAG, NULL, &buf, &size);
+        if (ret)
+        {
+            ret = CryptCreateHash(hCryptProv, Algid, 0, 0, &hHash);
+            if (ret)
+            {
+                ret = CryptHashData(hHash, buf, size, 0);
+                if (ret)
+                    ret = CryptGetHashParam(hHash, HP_HASHVAL, pbComputedHash,
+                     pcbComputedHash, 0);
+                CryptDestroyHash(hHash);
+            }
+            LocalFree(buf);
+        }
+    }
+    return ret;
+}
+
 BOOL WINAPI CryptSignCertificate(HCRYPTPROV hCryptProv, DWORD dwKeySpec,
  DWORD dwCertEncodingType, const BYTE *pbEncodedToBeSigned,
  DWORD cbEncodedToBeSigned, PCRYPT_ALGORITHM_IDENTIFIER pSignatureAlgorithm,
diff --git a/dlls/crypt32/crypt32.spec b/dlls/crypt32/crypt32.spec
index 1293816a636..56db08cfbc9 100644
--- a/dlls/crypt32/crypt32.spec
+++ b/dlls/crypt32/crypt32.spec
@@ -124,7 +124,7 @@
 @ stdcall CryptGetOIDFunctionValue(long str str wstr ptr ptr ptr)
 @ stdcall CryptHashCertificate(long long long ptr long ptr ptr)
 @ stub CryptHashMessage
-@ stub CryptHashPublicKeyInfo
+@ stdcall CryptHashPublicKeyInfo(long long long long ptr ptr ptr)
 @ stub CryptHashToBeSigned
 @ stub CryptImportPKCS8
 @ stdcall CryptImportPublicKeyInfo(long long ptr ptr)
diff --git a/dlls/crypt32/tests/cert.c b/dlls/crypt32/tests/cert.c
index 49692e22eb9..5c23607fc54 100644
--- a/dlls/crypt32/tests/cert.c
+++ b/dlls/crypt32/tests/cert.c
@@ -1544,6 +1544,38 @@ static void testComparePublicKeyInfo(void)
     ok(!ret, "Expected keys not to compare\n");
 }
 
+static void testHashPublicKeyInfo(void)
+{
+    BOOL ret;
+    CERT_PUBLIC_KEY_INFO info = { { 0 } };
+    DWORD len;
+
+    /* Crash
+    ret = CryptHashPublicKeyInfo(0, 0, 0, 0, NULL, NULL, NULL);
+    ret = CryptHashPublicKeyInfo(0, 0, 0, 0, &info, NULL, NULL);
+     */
+    ret = CryptHashPublicKeyInfo(0, 0, 0, 0, NULL, NULL, &len);
+    ok(!ret && GetLastError() == ERROR_FILE_NOT_FOUND,
+     "Expected ERROR_FILE_NOT_FOUND, got %08lx\n", GetLastError());
+    ret = CryptHashPublicKeyInfo(0, 0, 0, X509_ASN_ENCODING, NULL, NULL, &len);
+    ok(!ret && GetLastError() == STATUS_ACCESS_VIOLATION,
+     "Expected STATUS_ACCESS_VIOLATION, got %08lx\n", GetLastError());
+    ret = CryptHashPublicKeyInfo(0, 0, 0, X509_ASN_ENCODING, &info, NULL, &len);
+    ok(ret, "CryptHashPublicKeyInfo failed: %08lx\n", GetLastError());
+    ok(len == 16, "Expected hash size 16, got %ld\n", len);
+    if (len == 16)
+    {
+        static const BYTE emptyHash[] = { 0xb8,0x51,0x3a,0x31,0x0e,0x9f,0x40,
+         0x36,0x9c,0x92,0x45,0x1b,0x9d,0xc8,0xf9,0xf6 };
+        BYTE buf[16];
+
+        ret = CryptHashPublicKeyInfo(0, 0, 0, X509_ASN_ENCODING, &info, buf,
+         &len);
+        ok(ret, "CryptHashPublicKeyInfo failed: %08lx\n", GetLastError());
+        ok(!memcmp(buf, emptyHash, len), "Unexpected hash\n");
+    }
+}
+
 void testCompareCert(void)
 {
     CERT_INFO info1 = { 0 }, info2 = { 0 };
@@ -1827,6 +1859,7 @@ START_TEST(cert)
     testCompareCertName();
     testCompareIntegerBlob();
     testComparePublicKeyInfo();
+    testHashPublicKeyInfo();
     testCompareCert();
     testVerifySubjectCert();
     testAcquireCertPrivateKey();
diff --git a/include/wincrypt.h b/include/wincrypt.h
index 6e8824937c6..f538aee7297 100644
--- a/include/wincrypt.h
+++ b/include/wincrypt.h
@@ -2936,6 +2936,10 @@ BOOL WINAPI CryptHashCertificate(HCRYPTPROV hCryptProv, ALG_ID Algid,
  DWORD dwFlags, const BYTE *pbEncoded, DWORD cbEncoded, BYTE *pbComputedHash,
  DWORD *pcbComputedHash);
 
+BOOL WINAPI CryptHashPublicKeyInfo(HCRYPTPROV hCryptProv, ALG_ID Algid,
+ DWORD dwFlags, DWORD dwCertEncodingType, PCERT_PUBLIC_KEY_INFO pInfo,
+ BYTE *pbComputedHash, DWORD *pcbComputedHash);
+
 BOOL WINAPI CryptHashToBeSigned(HCRYPTPROV hCryptProv, DWORD dwCertEncodingType,
  const BYTE *pbEncoded, DWORD cbEncoded, BYTE *pbComputedHash,
  DWORD *pcbComputedHash);
-- 
2.11.4.GIT