Security-55471.tar.gz

[apple/security.git] / sec / SOSCircle / SecureObjectSync / SOSUserKey.c

diff --git a/sec/SOSCircle/SecureObjectSync/SOSUserKey.c b/sec/SOSCircle/SecureObjectSync/SOSUserKey.c
new file mode 100644 (file)
index 0000000..d3109c6
--- /dev/null
+++ b/sec/SOSCircle/SecureObjectSync/SOSUserKey.c
@@ -0,0 +1,80 @@
+//
+//  SOSUserKey.c
+//  sec
+//
+//  Created by Richard Murphy on 2/13/13.
+//
+//
+
+#include <stdio.h>
+#include <SecureObjectSync/SOSUserKey.h>
+#include <corecrypto/ccrng.h>
+#include <corecrypto/ccec.h>
+#include <CommonCrypto/CommonRandomSPI.h>
+#include <CoreFoundation/CFString.h>
+
+#if 0
+#include <corecrypto/ccrng_pbkdf2_prng.h>
+
+#define UK_CONST_DECL(k,v) CFTypeRef k = (CFTypeRef)(CFSTR(v));
+
+UK_CONST_DECL (ukSalt, "salt");
+UK_CONST_DECL (ukIteration, "iteration");
+
+static const size_t saltlen = 16;
+static const unsigned long iterations = 10240;
+
+static dispatch_once_t keyParmStoreInit;
+static CFMutableDictionaryRef keyParmStorage = NULL;
+static void SOSKeyParmStore(CFStringRef user_label, CFDictionaryRef parmData) {
+    dispatch_once(&keyParmStoreInit, ^{
+        keyParmStorage = CFDictionaryCreateMutable(kCFAllocatorDefault, 50,  &kCFTypeDictionaryKeyCallBacks, &kCFTypeDictionaryValueCallBacks);
+    });
+    CFDictionaryAddValue(keyParmStorage, user_label, parmData);
+}
+
+static CFDictionaryRef SOSKeyParmRetrieve(CFStringRef user_label) {
+    if(keyParmStorage && CFDictionaryContainsKey(keyParmStorage, user_label)) {
+        CFDictionaryRef parmData = CFDictionaryGetValue(keyParmStorage, user_label);
+        CFRetain(parmData);
+        return parmData;
+    }
+/*
+    const void *keys[] = { ukSalt, ukIteration };
+    const void *values[] = { cfsalt,  cfiteration };
+    CFDictionaryRef query = CFDictionaryCreate(kCFAllocatorDefault, keys, values, sizeof(keys)/sizeof(*keys), NULL, NULL);
+    CFDictionaryRef retval = CFDictionaryCreate(
+*/
+    return NULL;
+}
+
+
+static void
+SOSUserKeyGenParmPersist(CFStringRef user_label)
+{
+}
+
+static void
+SOSUserKeyGenParmRetrieve(CFStringRef user_label)
+{
+}
+#endif
+
+bool
+SOSUserKeyGenerate(int keysize, CFStringRef user_label, CFDataRef user_password, SecKeyRef *user_pubkey, SecKeyRef *user_privkey)
+{
+#if 0
+    ccec_const_cp_t cp = ccec_get_cp(keysize);
+    ccec_full_ctx_decl_cp(cp, full_key);
+    struct ccrng_pbkdf2_prng_state pbkdf2_prng;
+    uint8_t salt[saltlen];
+    if(CCRandomCopyBytes(kCCRandomDefault, salt, sizeof(salt)) != kCCSuccess) return false;
+    uint8_t password_bytes = CFDataGetBytePtr(user_password);
+    size_t password_length = CFDataGetLength(user_password);
+    ccrng_pbkdf2_prng_init(&pbkdf2_prng, 72, password_length, password_bytes, sizeof(salt), salt, iterations);
+    struct ccrng_state *rng = (struct ccrng_state *)&pbkdf2_prng;
+    ccec_generate_key(cp, rng, full_key);
+#endif
+
+    return true;
+}