Security-59306.11.20.tar.gz

[apple/security.git] / keychain / SecureObjectSync / SOSKeyedPubKeyIdentifier.c

diff --git a/keychain/SecureObjectSync/SOSKeyedPubKeyIdentifier.c b/keychain/SecureObjectSync/SOSKeyedPubKeyIdentifier.c
new file mode 100644 (file)
index 0000000..f3e018a
--- /dev/null
+++ b/keychain/SecureObjectSync/SOSKeyedPubKeyIdentifier.c
@@ -0,0 +1,88 @@
+/*
+ * Copyright (c) 2016 Apple Inc. All Rights Reserved.
+ *
+ * @APPLE_LICENSE_HEADER_START@
+ *
+ * This file contains Original Code and/or Modifications of Original Code
+ * as defined in and that are subject to the Apple Public Source License
+ * Version 2.0 (the 'License'). You may not use this file except in
+ * compliance with the License. Please obtain a copy of the License at
+ * http://www.opensource.apple.com/apsl/ and read it before using this
+ * file.
+ *
+ * The Original Code and all software distributed under the License are
+ * distributed on an 'AS IS' basis, WITHOUT WARRANTY OF ANY KIND, EITHER
+ * EXPRESS OR IMPLIED, AND APPLE HEREBY DISCLAIMS ALL SUCH WARRANTIES,
+ * INCLUDING WITHOUT LIMITATION, ANY WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE, QUIET ENJOYMENT OR NON-INFRINGEMENT.
+ * Please see the License for the specific language governing rights and
+ * limitations under the License.
+ *
+ * @APPLE_LICENSE_HEADER_END@
+ */
+
+//
+//  SOSKeyedPubKeyIdentifier.c
+//  Security
+//
+
+#include "SOSKeyedPubKeyIdentifier.h"
+#include "AssertMacros.h"
+#include "keychain/SecureObjectSync/SOSInternal.h"
+#include <utilities/debugging.h>
+
+#define SEPARATOR CFSTR("-")
+#define SEPLOC 2
+
+bool SOSKeyedPubKeyIdentifierIsPrefixed(CFStringRef kpkid) {
+    CFRange seploc = CFStringFind(kpkid, SEPARATOR, 0);
+    return seploc.location == SEPLOC;
+}
+
+static CFStringRef SOSKeyedPubKeyIdentifierCreateWithPrefixAndID(CFStringRef prefix, CFStringRef id) {
+    CFMutableStringRef retval = NULL;
+    require_quiet(prefix, errOut);
+    require_quiet(id, errOut);
+    require_quiet(CFStringGetLength(prefix) == SEPLOC, errOut);
+    retval = CFStringCreateMutableCopy(kCFAllocatorDefault, 50, prefix);
+    CFStringAppend(retval, SEPARATOR);
+    CFStringAppend(retval, id);
+errOut:
+    return retval;
+}
+
+CFStringRef SOSKeyedPubKeyIdentifierCreateWithData(CFStringRef prefix, CFDataRef pubKeyData) {
+    CFErrorRef localError = NULL;
+    CFStringRef id = SOSCopyIDOfDataBuffer(pubKeyData, &localError);
+    CFStringRef retval = SOSKeyedPubKeyIdentifierCreateWithPrefixAndID(prefix, id);
+    if(!id) secnotice("kpid", "Couldn't create kpid: %@", localError);
+    CFReleaseNull(id);
+    CFReleaseNull(localError);
+    return retval;
+}
+
+CFStringRef SOSKeyedPubKeyIdentifierCreateWithSecKey(CFStringRef prefix, SecKeyRef pubKey) {
+    CFErrorRef localError = NULL;
+    CFStringRef id = SOSCopyIDOfKey(pubKey, &localError);
+    CFStringRef retval = SOSKeyedPubKeyIdentifierCreateWithPrefixAndID(prefix, id);
+    if(!id) secnotice("kpid", "Couldn't create kpid: %@", localError);
+    CFReleaseNull(id);
+    CFReleaseNull(localError);
+    return retval;
+}
+
+
+CFStringRef SOSKeyedPubKeyIdentifierCopyPrefix(CFStringRef kpkid) {
+    CFRange seploc = CFStringFind(kpkid, SEPARATOR, 0);
+    if(seploc.location != SEPLOC) return NULL;
+    CFRange prefloc = CFRangeMake(0, SEPLOC);
+    return CFStringCreateWithSubstring(kCFAllocatorDefault, kpkid, prefloc);;
+}
+
+CFStringRef SOSKeyedPubKeyIdentifierCopyHpub(CFStringRef kpkid) {
+    CFRange seploc = CFStringFind(kpkid, SEPARATOR, 0);
+    if(seploc.location != SEPLOC) return NULL;
+    CFRange idloc = CFRangeMake(seploc.location+1, CFStringGetLength(kpkid) - (SEPLOC+1));
+    return CFStringCreateWithSubstring(kCFAllocatorDefault, kpkid, idloc);;
+}
+