diff --git a/cryptography/hazmat/bindings/commoncrypto/common_cryptor.py b/cryptography/hazmat/bindings/commoncrypto/common_cryptor.py
index 69edf1e..8783ece 100644
--- a/cryptography/hazmat/bindings/commoncrypto/common_cryptor.py
+++ b/cryptography/hazmat/bindings/commoncrypto/common_cryptor.py
@@ -27,13 +27,13 @@
 };
 typedef uint32_t CCAlgorithm;
 enum {
-    kCCSuccess  = 0,
-    kCCParamError       = -4300,
-    kCCBufferTooSmall   = -4301,
-    kCCMemoryFailure    = -4302,
-    kCCAlignmentError   = -4303,
-    kCCDecodeError      = -4304,
-    kCCUnimplemented    = -4305
+    kCCSuccess = 0,
+    kCCParamError = -4300,
+    kCCBufferTooSmall = -4301,
+    kCCMemoryFailure = -4302,
+    kCCAlignmentError = -4303,
+    kCCDecodeError = -4304,
+    kCCUnimplemented = -4305
 };
 typedef int32_t CCCryptorStatus;
 typedef uint32_t CCOptions;
@@ -52,74 +52,38 @@
 typedef uint32_t CCModeOptions;
 
 enum {
-    kCCModeECB      = 1,
-    kCCModeCBC      = 2,
-    kCCModeCFB      = 3,
-    kCCModeCTR      = 4,
-    kCCModeF8       = 5, // Unimplemented for now (not included)
-    kCCModeLRW      = 6, // Unimplemented for now (not included)
-    kCCModeOFB      = 7,
-    kCCModeXTS      = 8,
-    kCCModeRC4      = 9,
-    kCCModeCFB8     = 10,
+    kCCModeECB = 1,
+    kCCModeCBC = 2,
+    kCCModeCFB = 3,
+    kCCModeCTR = 4,
+    kCCModeF8 = 5,
+    kCCModeLRW = 6,
+    kCCModeOFB = 7,
+    kCCModeXTS = 8,
+    kCCModeRC4 = 9,
+    kCCModeCFB8 = 10,
 };
 typedef uint32_t CCMode;
 enum {
-    ccNoPadding         = 0,
-    ccPKCS7Padding      = 1,
+    ccNoPadding = 0,
+    ccPKCS7Padding = 1,
 };
 typedef uint32_t CCPadding;
 """
 
 FUNCTIONS = """
-CCCryptorStatus CCCryptorCreateWithMode(
-    CCOperation,             /* kCCEncrypt, kCCEncrypt */
-    CCMode,
-    CCAlgorithm,
-    CCPadding,
-    const void *,            /* optional initialization vector */
-    const void *,           /* raw key material */
-    size_t,
-    const void *,         /* raw tweak material */
-    size_t,
-    int,      /* number of rounds. 0 == default */
-    CCModeOptions,
-    CCCryptorRef *);   /* RETURNED */
+CCCryptorStatus CCCryptorCreateWithMode(CCOperation, CCMode, CCAlgorithm,
+                                        CCPadding, const void *, const void *,
+                                        size_t, const void *, size_t, int,
+                                        CCModeOptions, CCCryptorRef *);
 
-CCCryptorStatus CCCryptorCreate(
-    CCOperation,             /* kCCEncrypt, etc. */
-    CCAlgorithm,            /* kCCAlgorithmDES, etc. */
-    CCOptions,          /* kCCOptionPKCS7Padding, etc. */
-    const void *,            /* raw key material */
-    size_t,
-    const void *,             /* optional initialization vector */
-    CCCryptorRef *);  /* RETURNED */
-CCCryptorStatus CCCryptorUpdate(
-    CCCryptorRef,
-    const void *,
-    size_t,
-    void *,              /* data RETURNED here */
-    size_t,
-    size_t *);      /* number of bytes written */
-CCCryptorStatus CCCryptorFinal(
-    CCCryptorRef,
-    void *,
-    size_t,
-    size_t *);      /* number of bytes written */
+CCCryptorStatus CCCryptorCreate(CCOperation, CCAlgorithm, CCOptions,
+                                const void *, size_t, const void *,
+                                CCCryptorRef *);
+CCCryptorStatus CCCryptorUpdate(CCCryptorRef, const void *, size_t, void *,
+                                size_t, size_t *);
+CCCryptorStatus CCCryptorFinal(CCCryptorRef, void *, size_t, size_t *);
 CCCryptorStatus CCCryptorRelease(CCCryptorRef);
-
-/* GCM functions, 10.8+ iOS 5+ */
-enum {
-    kCCModeGCM     = 11
-};
-CCCryptorStatus CCCryptorGCMAddIV(CCCryptorRef, const void *, size_t);
-CCCryptorStatus CCCryptorGCMAddAAD(CCCryptorRef, const void *, size_t);
-CCCryptorStatus CCCryptorGCMEncrypt(CCCryptorRef, const void *, size_t,
-                                    void *);
-CCCryptorStatus CCCryptorGCMDecrypt(CCCryptorRef, const void *, size_t,
-                                    void *);
-CCCryptorStatus CCCryptorGCMFinal(CCCryptorRef, const void *, size_t *);
-CCCryptorStatus CCCryptorGCMReset(CCCryptorRef);
 """
 
 MACROS = """