bcrypt: Support retrieving hash length from algorithm handles.

dlls/bcrypt/bcrypt_main.c

@@ -438,6 +438,11 @@ static NTSTATUS get_alg_property( enum alg_id id, const WCHAR *prop, UCHAR *buf,
             value = OBJECT_LENGTH_SHA1;
             break;
         }
+        else if (!strcmpW( prop, BCRYPT_HASH_LENGTH ))
+        {
+            value = HASH_DIGEST_LENGTH_SHA1;
+            break;
+        }
         FIXME( "unsupported sha1 algorithm property %s\n", debugstr_w(prop) );
         return STATUS_NOT_IMPLEMENTED;
 
@@ -447,6 +452,11 @@ static NTSTATUS get_alg_property( enum alg_id id, const WCHAR *prop, UCHAR *buf,
             value = OBJECT_LENGTH_SHA256;
             break;
         }
+        else if (!strcmpW( prop, BCRYPT_HASH_LENGTH ))
+        {
+            value = HASH_DIGEST_LENGTH_SHA256;
+            break;
+        }
         FIXME( "unsupported sha256 algorithm property %s\n", debugstr_w(prop) );
         return STATUS_NOT_IMPLEMENTED;
 
@@ -456,6 +466,11 @@ static NTSTATUS get_alg_property( enum alg_id id, const WCHAR *prop, UCHAR *buf,
             value = OBJECT_LENGTH_SHA384;
             break;
         }
+        else if (!strcmpW( prop, BCRYPT_HASH_LENGTH ))
+        {
+            value = HASH_DIGEST_LENGTH_SHA384;
+            break;
+        }
         FIXME( "unsupported sha384 algorithm property %s\n", debugstr_w(prop) );
         return STATUS_NOT_IMPLEMENTED;
 
@@ -465,6 +480,11 @@ static NTSTATUS get_alg_property( enum alg_id id, const WCHAR *prop, UCHAR *buf,
             value = OBJECT_LENGTH_SHA512;
             break;
         }
+        else if (!strcmpW( prop, BCRYPT_HASH_LENGTH ))
+        {
+            value = HASH_DIGEST_LENGTH_SHA512;
+            break;
+        }
         FIXME( "unsupported sha512 algorithm property %s\n", debugstr_w(prop) );
         return STATUS_NOT_IMPLEMENTED;
 

dlls/bcrypt/tests/bcrypt.c

@@ -123,6 +123,12 @@ static void test_sha1(void)
     ok(len != 0xdeadbeef, "len not set\n");
     ok(size == sizeof(len), "got %u\n", size);
 
+    len = size = 0xdeadbeef;
+    ret = BCryptGetProperty(alg, BCRYPT_HASH_LENGTH, (UCHAR *)&len , sizeof(len), &size, 0);
+    ok(ret == STATUS_SUCCESS, "got %08x\n", ret);
+    ok(len == 20, "got %u\n", len);
+    ok(size == sizeof(len), "got %u\n", size);
+
     hash = NULL;
     len = sizeof(buf);
     ret = BCryptCreateHash(alg, &hash, buf, len, NULL, 0, 0);
@@ -196,6 +202,12 @@ static void test_sha256(void)
     ok(len != 0xdeadbeef, "len not set\n");
     ok(size == sizeof(len), "got %u\n", size);
 
+    len = size = 0xdeadbeef;
+    ret = BCryptGetProperty(alg, BCRYPT_HASH_LENGTH, (UCHAR *)&len , sizeof(len), &size, 0);
+    ok(ret == STATUS_SUCCESS, "got %08x\n", ret);
+    ok(len == 32, "got %u\n", len);
+    ok(size == sizeof(len), "got %u\n", size);
+
     hash = NULL;
     len = sizeof(buf);
     ret = BCryptCreateHash(alg, &hash, buf, len, NULL, 0, 0);
@@ -269,6 +281,12 @@ static void test_sha384(void)
     ok(len != 0xdeadbeef, "len not set\n");
     ok(size == sizeof(len), "got %u\n", size);
 
+    len = size = 0xdeadbeef;
+    ret = BCryptGetProperty(alg, BCRYPT_HASH_LENGTH, (UCHAR *)&len , sizeof(len), &size, 0);
+    ok(ret == STATUS_SUCCESS, "got %08x\n", ret);
+    ok(len == 48, "got %u\n", len);
+    ok(size == sizeof(len), "got %u\n", size);
+
     hash = NULL;
     len = sizeof(buf);
     ret = BCryptCreateHash(alg, &hash, buf, len, NULL, 0, 0);
@@ -343,6 +361,12 @@ static void test_sha512(void)
     ok(len != 0xdeadbeef, "len not set\n");
     ok(size == sizeof(len), "got %u\n", size);
 
+    len = size = 0xdeadbeef;
+    ret = BCryptGetProperty(alg, BCRYPT_HASH_LENGTH, (UCHAR *)&len , sizeof(len), &size, 0);
+    ok(ret == STATUS_SUCCESS, "got %08x\n", ret);
+    ok(len == 64, "got %u\n", len);
+    ok(size == sizeof(len), "got %u\n", size);
+
     hash = NULL;
     len = sizeof(buf);
     ret = BCryptCreateHash(alg, &hash, buf, len, NULL, 0, 0);