Security-57031.1.35.tar.gz

[apple/security.git] / SecurityTests / cspxutils / ccCtxSize / ccCtxSize.c

diff --git a/SecurityTests/cspxutils/ccCtxSize/ccCtxSize.c b/SecurityTests/cspxutils/ccCtxSize/ccCtxSize.c
new file mode 100644 (file)
index 0000000..601e81a
--- /dev/null
+++ b/SecurityTests/cspxutils/ccCtxSize/ccCtxSize.c
@@ -0,0 +1,62 @@
+/* 
+ * measure and report min context sizes for all CCCryptor ops and algorithms. 
+ */
+ 
+#include <string.h>
+#include <stdlib.h>
+#include <stdio.h>
+#include <CommonCrypto/CommonCryptor.h>
+#include <CoreServices/../Frameworks/CarbonCore.framework/Headers/MacErrors.h>
+
+static void report(
+       const char *name,
+       CCOperation op,
+       CCAlgorithm alg,
+       size_t definedSize)
+{
+       char key[4];
+       size_t cryptorLength = 0;
+       CCCryptorStatus crtn;
+       CCCryptorRef cryptorRef;
+       char buf[1];
+       
+       crtn = CCCryptorCreateFromData(op, alg, 0, key, 4, NULL,
+               buf, 1, &cryptorRef, &cryptorLength);
+       switch(crtn) {
+               case kCCSuccess:
+                       printf("***Unuexpected success on CCCryptorCreate()\n");
+                       return;
+               case kCCBufferTooSmall:
+                       break;
+               default:
+                       printf("***Unexpected result on CCCryptorCreate: expect %d got %d\n",
+                               (int)kCCBufferTooSmall, (int)crtn);
+                       return;
+       }
+       printf("%s : %lu bytes\n", name, (unsigned long)cryptorLength);
+       if(definedSize < cryptorLength) {
+               printf("***Defined context size (%u) is less than reported!\n", 
+                       (unsigned)definedSize);
+       }
+}
+
+int main(int argc, char **argv)
+{
+       report("kCCAlgorithmAES128  ", kCCEncrypt, kCCAlgorithmAES128,  kCCContextSizeAES128);
+       report("kCCAlgorithmDES     ", kCCEncrypt, kCCAlgorithmDES,             kCCContextSizeDES);
+       report("kCCAlgorithm3DES    ", kCCEncrypt, kCCAlgorithm3DES,    kCCContextSize3DES);
+       report("kCCAlgorithmCAST    ", kCCEncrypt, kCCAlgorithmCAST,    kCCContextSizeCAST);
+       report("kCCAlgorithmRC4     ", kCCEncrypt, kCCAlgorithmRC4,             kCCContextSizeRC4);
+       return 0;
+}
+
+/*
+
+sizeof(CCCryptor) = 24 including the spiCtx[] array
+sizeof(struct _CCCryptContext) = 60 including algCtx[]
+sizeof(DES_key_schedule) = 128
+sizeof(DES3_Schedule) = 384
+sizeof(GAesKey) = 516
+sizeof(_ccHmacContext) = 180
+
+*/