kc-41-sececkey.m   [plain text]

/*
* Copyright (c) 2011,2013-2014 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@
*/

/*
* si-40-seckey.c
* Security
*
* Copyright (c) 2007-2009,2013-2014 Apple Inc. All Rights Reserved.
*
*/

/*
* This is to fool os services to not provide the Keychain manager
* interface that doens't work since we don't have unified headers
* between iOS and OS X. rdar://23405418/
*/
#define __KEYCHAINCORE__ 1
#import <Foundation/Foundation.h>

#include <TargetConditionals.h>
#include <CoreFoundation/CoreFoundation.h>
#include <Security/Security.h>
#include <Security/SecKeyPriv.h>
#include <Security/SecItemPriv.h>

#include <Security/SecItem.h>
#include <Security/SecKey.h>

#if 0
#include <Security/SecCertificate.h>
#include <Security/SecCertificateInternal.h>
#include <Security/SecKey.h>
#include <Security/SecKeyPriv.h>
#include <Security/SecItem.h>
#include <Security/SecAsn1Types.h>
#include <Security/oidsalg.h>
#include <Security/SecureTransport.h>
#include <Security/SecRandom.h>
#include <CommonCrypto/CommonDigest.h>
#include <libDER/libDER.h>
#include <stdlib.h>
#include <unistd.h>
#endif

#include "keychain_regressions.h"
#include "utilities/SecCFRelease.h"
#include "utilities/array_size.h"

#if TARGET_OS_IPHONE
static void testdigestandsignalg(SecKeyRef privKey, SecKeyRef pubKey, const SecAsn1AlgId *algId) {
uint8_t dataToDigest[256];
size_t dataToDigestLen = sizeof(dataToDigest);
size_t sigLen = SecKeyGetSize(privKey, kSecKeySignatureSize);
uint8_t sig[sigLen];

DERItem oid;
oid.length = algId->algorithm.Length;
oid.data = algId->algorithm.Data;

/* Get the oid in decimal for display purposes. */
CFStringRef oidStr = SecDERItemCopyOIDDecimalRepresentation(kCFAllocatorDefault, &oid);
char oidBuf[40];
CFStringGetCString(oidStr, oidBuf, sizeof(oidBuf), kCFStringEncodingUTF8);
CFRelease(oidStr);

SKIP: {
OSStatus status;

/* Time to sign. */
ok_status(status = SecKeyDigestAndSign(privKey, algId, dataToDigest, dataToDigestLen,
sig, &sigLen),
"digest and sign %s with %ld bit RSA key", oidBuf, sigLen * 8);

skip("SecKeyDigestAndSign failed", 3, status == errSecSuccess);

/* Verify the signature we just made. */
ok_status(SecKeyDigestAndVerify(pubKey, algId, dataToDigest, dataToDigestLen,
sig, sigLen), "digest and verify");
/* Invalidate the signature. */
sig[0] ^= 0xff;
is_status(SecKeyDigestAndVerify(pubKey, algId, dataToDigest, dataToDigestLen,
sig, sigLen), errSSLCrypto, "digest and verify bad sig");
sig[0] ^= 0xff;
dataToDigest[0] ^= 0xff;
is_status(SecKeyDigestAndVerify(pubKey, algId, dataToDigest, dataToDigestLen,
sig, sigLen), errSSLCrypto, "digest and verify bad digest");
}
}

static void testdigestandsign(SecKeyRef privKey, SecKeyRef pubKey) {
static const SecAsn1Oid *oids[] = {
&CSSMOID_ECDSA_WithSHA1,
#if 0
&CSSMOID_ECDSA_WithSHA224,
&CSSMOID_ECDSA_WithSHA256,
&CSSMOID_ECDSA_WithSHA384,
&CSSMOID_ECDSA_WithSHA512,
#endif
};

uint32_t ix;
SecAsn1AlgId algId = {};
for (ix = 0; ix < sizeof(oids) / sizeof(*oids); ++ix) {
if (oids[ix]) {
algId.algorithm = *oids[ix];
} else {
algId.algorithm.Length = 0;
algId.algorithm.Data = NULL;
}

testdigestandsignalg(privKey, pubKey, &algId);
}
}
#endif

static void testkeygen(size_t keySizeInBits) {
SecKeyRef pubKey = NULL, privKey = NULL;
size_t keySizeInBytes = (keySizeInBits + 7) / 8;
CFNumberRef kzib;

kzib = CFNumberCreate(NULL, kCFNumberSInt64Type, &keySizeInBits);
CFMutableDictionaryRef kgp = CFDictionaryCreateMutable(NULL, 0, NULL, NULL);
CFDictionaryAddValue(kgp, kSecAttrKeyType, kSecAttrKeyTypeEC);
CFDictionaryAddValue(kgp, kSecAttrKeySizeInBits, kzib);

OSStatus status;
ok_status(status = SecKeyGeneratePair(kgp, &pubKey, &privKey),
"Generate %ld bit (%ld byte) EC keypair", keySizeInBits,
keySizeInBytes);
CFRelease(kzib);
CFRelease(kgp);

SecKeyRef pubKeybis = SecKeyCopyPublicKey(privKey);
ok(pubKeybis!=NULL);
is(CFGetRetainCount(pubKeybis),2); // pubKey + pubKeybis
CFDataRef PubKeyData = SecKeyCopyExternalRepresentation(pubKey, NULL);
CFDataRef PubKeybisData = SecKeyCopyExternalRepresentation(pubKeybis, NULL);
isnt(CFDataGetLength(PubKeyData),0);
ok(CFEqual(PubKeyData,PubKeybisData));
CFReleaseNull(PubKeyData);
CFReleaseNull(PubKeybisData);
CFReleaseNull(pubKeybis);

SKIP: {
skip("keygen failed", 8, status == errSecSuccess);
ok(pubKey, "pubKey returned");
ok(privKey, "privKey returned");

/* Sign something. */
uint8_t something[20] = {0x80, 0xbe, 0xef, 0xba, 0xd0, };
uint8_t sig[8+2*keySizeInBytes];
size_t sigLen = sizeof(sig);
ok_status(SecKeyRawSign(privKey, kSecPaddingNone,
something, sizeof(something), sig, &sigLen), "sign something");
ok_status(SecKeyRawVerify(pubKey, kSecPaddingNone,
something, sizeof(something), sig, sigLen), "verify sig on something");

#if TARGET_OS_IPHONE
testdigestandsign(privKey, pubKey);
#endif

const void *privkeys[] = {
kSecValueRef
};
const void *privvalues[] = {
privKey
};
CFDictionaryRef privitem = CFDictionaryCreate(NULL, privkeys, privvalues,
sizeof(privkeys) / sizeof(*privkeys), NULL, NULL);
#if TARGET_OS_IPHONE
ok_status(SecItemAdd(privitem, NULL), "add private key");
#endif
ok_status(SecItemDelete(privitem), "delete private key");
CFReleaseNull(privitem);

const void *pubKeys[] = {
kSecValueRef
};
const void *pubvalues[] = {
pubKey
};
CFDictionaryRef pubitem = CFDictionaryCreate(NULL, pubKeys, pubvalues,
sizeof(pubKeys) / sizeof(*pubKeys), NULL, NULL);
#if TARGET_OS_IPHONE
ok_status(SecItemAdd(pubitem, NULL), "add public key");
#endif
ok_status(SecItemDelete(pubitem), "delete public key");
CFReleaseNull(pubitem);

/* Cleanup. */
CFReleaseNull(pubKey);
CFReleaseNull(privKey);
}
}

static void testkeygen2(size_t keySizeInBits) {
SecKeyRef pubKey = NULL, privKey = NULL;
size_t keySizeInBytes = (keySizeInBits + 7) / 8;
CFNumberRef kzib;

CFUUIDRef ourUUID = CFUUIDCreate(kCFAllocatorDefault);
CFStringRef uuidString = CFUUIDCreateString(kCFAllocatorDefault, ourUUID);
CFMutableStringRef publicName = CFStringCreateMutableCopy(kCFAllocatorDefault, 0, uuidString);
CFMutableStringRef privateName = CFStringCreateMutableCopy(kCFAllocatorDefault, 0, uuidString);

CFReleaseNull(ourUUID);
CFReleaseNull(uuidString);

CFStringAppend(publicName, CFSTR("-Public-41"));
CFStringAppend(privateName, CFSTR("-Private-41"));

CFMutableDictionaryRef pubd = CFDictionaryCreateMutable(NULL, 0, NULL, NULL);
CFMutableDictionaryRef privd = CFDictionaryCreateMutable(NULL, 0, NULL, NULL);
CFDictionaryAddValue(pubd, kSecAttrLabel, publicName);
CFDictionaryAddValue(privd, kSecAttrLabel, privateName);

kzib = CFNumberCreate(NULL, kCFNumberSInt64Type, &keySizeInBits);
CFMutableDictionaryRef kgp = CFDictionaryCreateMutable(NULL, 0, NULL, NULL);
CFDictionaryAddValue(kgp, kSecAttrKeyType, kSecAttrKeyTypeEC);
CFDictionaryAddValue(kgp, kSecAttrKeySizeInBits, kzib);
CFDictionaryAddValue(kgp, kSecAttrIsPermanent, kCFBooleanTrue);
CFDictionaryAddValue(kgp, kSecPublicKeyAttrs, pubd);
CFDictionaryAddValue(kgp, kSecPrivateKeyAttrs, privd);

OSStatus status;
ok_status(status = SecKeyGeneratePair(kgp, &pubKey, &privKey),
"Generate %ld bit (%ld byte) persistent RSA keypair",
keySizeInBits, keySizeInBytes);
CFRelease(kzib);
CFRelease(kgp);

SKIP: {
skip("keygen failed", 8, status == errSecSuccess);
ok(pubKey, "pubKey returned");
ok(privKey, "privKey returned");

SecKeyRef pubKey2, privKey2;
CFDictionaryAddValue(pubd, kSecClass, kSecClassKey);
CFDictionaryAddValue(pubd, kSecReturnRef, kCFBooleanTrue);
CFDictionaryAddValue(privd, kSecClass, kSecClassKey);
CFDictionaryAddValue(privd, kSecReturnRef, kCFBooleanTrue);
CFDictionaryAddValue(privd, kSecAttrCanSign, kCFBooleanTrue);
ok_status(SecItemCopyMatching(pubd, (CFTypeRef *)&pubKey2),
"retrieve pub key by label");
ok(pubKey2, "got valid object");
ok_status(SecItemCopyMatching(privd, (CFTypeRef *)&privKey2),
"retrieve priv key by label and kSecAttrCanSign");
ok(privKey2, "got valid object");

/* Sign something. */
uint8_t something[20] = {0x80, 0xbe, 0xef, 0xba, 0xd0, };
size_t sigLen = (((keySizeInBits + 7) / 8) + 3) * 2 + 3;
uint8_t sig[sigLen];
ok_status(SecKeyRawSign(privKey2, kSecPaddingPKCS1,
something, sizeof(something), sig, &sigLen), "sign something");
ok_status(SecKeyRawVerify(pubKey2, kSecPaddingPKCS1,
something, sizeof(something), sig, sigLen), "verify sig on something");

/* Cleanup. */
CFReleaseNull(pubKey2);
CFReleaseNull(privKey2);
}

/* delete from keychain - note: do it before releasing publicName and privateName
because pubd and privd have no retain/release callbacks */
ok_status(SecItemDelete(pubd), "delete generated pub key");
ok_status(SecItemDelete(privd), "delete generated priv key");

/* Cleanup. */
CFReleaseNull(pubKey);
CFReleaseNull(privKey);

CFReleaseNull(publicName);
CFReleaseNull(privateName);

CFRelease(pubd);
CFRelease(privd);
}

static void testkeygen3(size_t keySizeInBits) {
SecKeyRef pubKey = NULL, privKey = NULL;
size_t keySizeInBytes = (keySizeInBits + 7) / 8;
CFNumberRef kzib;

kzib = CFNumberCreate(NULL, kCFNumberSInt64Type, &keySizeInBits);
CFMutableDictionaryRef kgp = CFDictionaryCreateMutable(NULL, 0, NULL, NULL);
CFDictionaryAddValue(kgp, kSecAttrKeyType, kSecAttrKeyTypeECSECPrimeRandom);
CFDictionaryAddValue(kgp, kSecAttrKeySizeInBits, kzib);
CFDictionaryAddValue(kgp, kSecAttrIsPermanent, kCFBooleanFalse);

ok(privKey = SecKeyCreateRandomKey(kgp, NULL));
CFRelease(kzib);
CFRelease(kgp);

ok(pubKey = SecKeyCopyPublicKey(privKey));
is(CFGetRetainCount(pubKey),1);

/* Sign something. */
uint8_t something[20] = {0x80, 0xbe, 0xef, 0xba, 0xd0, };
uint8_t sig[8+2*keySizeInBytes];
size_t sigLen = sizeof(sig);
ok_status(SecKeyRawSign(privKey, kSecPaddingNone,
something, sizeof(something), sig, &sigLen), "sign something");
ok_status(SecKeyRawVerify(pubKey, kSecPaddingNone,
something, sizeof(something), sig, sigLen), "verify sig on something");

/* Cleanup. */
CFReleaseNull(pubKey);
CFReleaseNull(privKey);
}

#if TARGET_OS_IPHONE
// Raw DER Key
const uint8_t EC_P256_KeyDER[]={
0x30, 0x6b, 0x02, 0x01, 0x01, 0x04, 0x20, 0x86, 0x87, 0x79, 0x59, 0xd1,
0xc6, 0x3c, 0x50, 0x24, 0x30, 0xa4, 0xaf, 0x89, 0x1d, 0xd1, 0x94, 0x23,
0x56, 0x79, 0x46, 0x93, 0x72, 0x31, 0x39, 0x24, 0xe6, 0x01, 0x96, 0xc8,
0xeb, 0xf3, 0x88, 0xa1, 0x44, 0x03, 0x42, 0x00, 0x04, 0x8c, 0xfa, 0xd7,
0x8a, 0xf1, 0xb9, 0xad, 0xd7, 0x3a, 0x33, 0xb5, 0x9a, 0xad, 0x52, 0x0d,
0x14, 0xd6, 0x6b, 0x35, 0x56, 0x79, 0xd6, 0x74, 0x2a, 0x37, 0x7e, 0x2f,
0x33, 0xa6, 0xab, 0xee, 0x35, 0x00, 0x70, 0x82, 0x89, 0x9c, 0xfc, 0x97,
0xc4, 0x89, 0x5c, 0x16, 0x50, 0xad, 0x60, 0x55, 0xa6, 0x70, 0xee, 0x07,
0x1b, 0xfe, 0xe4, 0xf0, 0xa0, 0x63, 0xc0, 0x73, 0x24, 0x97, 0x92, 0x04,
0xc7};
#else
// Open SSL Private Key
const uint8_t EC_P256_KeyDER_priv[]={
0x30, 0x77, 0x02, 0x01, 0x01, 0x04, 0x20, 0x86, 0x87, 0x79, 0x59, 0xd1,
0xc6, 0x3c, 0x50, 0x24, 0x30, 0xa4, 0xaf, 0x89, 0x1d, 0xd1, 0x94, 0x23,
0x56, 0x79, 0x46, 0x93, 0x72, 0x31, 0x39, 0x24, 0xe6, 0x01, 0x96, 0xc8,
0xeb, 0xf3, 0x88, 0xa0, 0x0a, 0x06, 0x08, 0x2a, 0x86, 0x48, 0xce, 0x3d,
0x03, 0x01, 0x07, 0xa1, 0x44, 0x03, 0x42, 0x00, 0x04, 0x8c, 0xfa, 0xd7,
0x8a, 0xf1, 0xb9, 0xad, 0xd7, 0x3a, 0x33, 0xb5, 0x9a, 0xad, 0x52, 0x0d,
0x14, 0xd6, 0x6b, 0x35, 0x56, 0x79, 0xd6, 0x74, 0x2a, 0x37, 0x7e, 0x2f,
0x33, 0xa6, 0xab, 0xee, 0x35, 0x00, 0x70, 0x82, 0x89, 0x9c, 0xfc, 0x97,
0xc4, 0x89, 0x5c, 0x16, 0x50, 0xad, 0x60, 0x55, 0xa6, 0x70, 0xee, 0x07,
0x1b, 0xfe, 0xe4, 0xf0, 0xa0, 0x63, 0xc0, 0x73, 0x24, 0x97, 0x92, 0x04,
0xc7};

// Open SSL Public Key
const uint8_t EC_P256_KeyDER_pub[]={
0x30, 0x59, 0x30, 0x13, 0x06, 0x07, 0x2a, 0x86, 0x48, 0xce, 0x3d, 0x02,
0x01, 0x06, 0x08, 0x2a, 0x86, 0x48, 0xce, 0x3d, 0x03, 0x01, 0x07, 0x03,
0x42, 0x00, 0x04, 0x8c, 0xfa, 0xd7, 0x8a, 0xf1, 0xb9, 0xad, 0xd7, 0x3a,
0x33, 0xb5, 0x9a, 0xad, 0x52, 0x0d, 0x14, 0xd6, 0x6b, 0x35, 0x56, 0x79,
0xd6, 0x74, 0x2a, 0x37, 0x7e, 0x2f, 0x33, 0xa6, 0xab, 0xee, 0x35, 0x00,
0x70, 0x82, 0x89, 0x9c, 0xfc, 0x97, 0xc4, 0x89, 0x5c, 0x16, 0x50, 0xad,
0x60, 0x55, 0xa6, 0x70, 0xee, 0x07, 0x1b, 0xfe, 0xe4, 0xf0, 0xa0, 0x63,
0xc0, 0x73, 0x24, 0x97, 0x92, 0x04, 0xc7};
#endif

const uint8_t EC_P256_SigDER[]={
0x30, 0x45, 0x02, 0x20, 0x4b, 0x37, 0x7f, 0x45, 0xd0, 0x5d, 0xa6, 0x53,
0xb3, 0x62, 0x6f, 0x32, 0xdb, 0xfc, 0xf6, 0x3b, 0x84, 0xfa, 0x5a, 0xd9,
0x17, 0x67, 0x03, 0x73, 0x48, 0x0c, 0xad, 0x89, 0x13, 0x69, 0x61, 0xb3,
0x02, 0x21, 0x00, 0xd6, 0x23, 0xaf, 0xd9, 0x7d, 0x72, 0xba, 0x3b, 0x90,
0xc1, 0x23, 0x7d, 0xdb, 0x2c, 0xd1, 0x0d, 0xbb, 0xb4, 0x0f, 0x67, 0x26,
0xff, 0x3f, 0xa6, 0x47, 0xa4, 0x13, 0x0d, 0xe0, 0x45, 0xd5, 0x6b};

const uint8_t EC_P256_SigRaw[]= {
0x4b, 0x37, 0x7f, 0x45, 0xd0, 0x5d, 0xa6, 0x53, 0xb3, 0x62, 0x6f, 0x32,
0xdb, 0xfc, 0xf6, 0x3b, 0x84, 0xfa, 0x5a, 0xd9, 0x17, 0x67, 0x03, 0x73,
0x48, 0x0c, 0xad, 0x89, 0x13, 0x69, 0x61, 0xb3, 0xd6, 0x23, 0xaf, 0xd9,
0x7d, 0x72, 0xba, 0x3b, 0x90, 0xc1, 0x23, 0x7d, 0xdb, 0x2c, 0xd1, 0x0d,
0xbb, 0xb4, 0x0f, 0x67, 0x26, 0xff, 0x3f, 0xa6, 0x47, 0xa4, 0x13, 0x0d,
0xe0, 0x45, 0xd5, 0x6b};

const uint8_t EC_SigDigest[24] = "012345678912345678901234";

/* r is 72 bytes longer than it should be */
const uint8_t EC_P256_SigDER_LargeInt[]={
0x30, 0x81, 0x8D, 0x02, 0x68,
0x22, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x4b, 0x37, 0x7f, 0x45, 0xd0, 0x5d, 0xa6, 0x53,
0xb3, 0x62, 0x6f, 0x32, 0xdb, 0xfc, 0xf6, 0x3b, 0x84, 0xfa, 0x5a, 0xd9, 0x17, 0x67, 0x03, 0x73,
0x48, 0x0c, 0xad, 0x89, 0x13, 0x69, 0x61, 0xb3,
0x02, 0x21,
0x00, 0xd6, 0x23, 0xaf, 0xd9, 0x7d, 0x72, 0xba, 0x3b, 0x90, 0xc1, 0x23, 0x7d, 0xdb, 0x2c, 0xd1,
0x0d, 0xbb, 0xb4, 0x0f, 0x67, 0x26, 0xff, 0x3f, 0xa6, 0x47, 0xa4, 0x13, 0x0d, 0xe0, 0x45, 0xd5,
0x6b};

static void testsignformat(void)
{
SecKeyRef privKey = NULL;
SecKeyRef pubKey = NULL;
CFArrayRef KeyArrayPub=NULL;
CFArrayRef KeyArrayPriv=NULL;
uint8_t EC_signature_DER[72];
uint8_t EC_signature_RAW[64];
size_t EC_signature_DER_size=sizeof(EC_signature_DER);
size_t EC_signature_RAW_size=sizeof(EC_signature_RAW);

#if TARGET_OS_IPHONE
// Key import for iOS
{
ok((privKey = SecKeyCreateECPrivateKey(kCFAllocatorDefault,
EC_P256_KeyDER, sizeof(EC_P256_KeyDER),
kSecKeyEncodingPkcs1)) != NULL, "import privkey");
CFDataRef pubdata = NULL;
ok_status(SecKeyCopyPublicBytes(privKey, &pubdata), "pub key from priv key");

ok((pubKey = SecKeyCreateECPublicKey(kCFAllocatorDefault,
CFDataGetBytePtr(pubdata), CFDataGetLength(pubdata),
kSecKeyEncodingBytes))!=NULL,
"recreate seckey");
CFReleaseNull(pubdata);
}
#else
// Key import for MacOS
{
CFDataRef DER_key;
SecExternalFormat sef=kSecFormatOpenSSL;
SecExternalItemType seit;

// Public key
DER_key = CFDataCreate(kCFAllocatorDefault, EC_P256_KeyDER_pub, sizeof(EC_P256_KeyDER_pub));
seit=kSecItemTypePublicKey;
ok_status(SecItemImport(DER_key,NULL,&sef,&seit,0,NULL,NULL,&KeyArrayPub), "Import DER key");
ok((!(KeyArrayPub==NULL) && CFArrayGetCount(KeyArrayPub)==1), "One key imported");
pubKey=(SecKeyRef)CFArrayGetValueAtIndex(KeyArrayPub,0);
CFReleaseNull(DER_key);

// Private key
DER_key = CFDataCreate(kCFAllocatorDefault, EC_P256_KeyDER_priv, sizeof(EC_P256_KeyDER_priv));
seit=kSecItemTypePrivateKey;
ok_status(SecItemImport(DER_key,NULL,&sef,&seit,0,NULL,NULL,&KeyArrayPriv), "Import DER key");
ok((!(KeyArrayPriv==NULL) && CFArrayGetCount(KeyArrayPriv)==1), "One key imported");
privKey=(SecKeyRef)CFArrayGetValueAtIndex(KeyArrayPriv,0);
CFReleaseNull(DER_key);
}
#endif

// Verify fixed signature
ok_status(SecKeyRawVerify(pubKey, kSecPaddingPKCS1,
EC_SigDigest, sizeof(EC_SigDigest), EC_P256_SigDER, sizeof(EC_P256_SigDER)), "verify DER sig on something");

ok_status(SecKeyRawVerify(pubKey, kSecPaddingSigRaw,
EC_SigDigest, sizeof(EC_SigDigest), EC_P256_SigRaw, sizeof(EC_P256_SigRaw)), "verify RAW sig on something");

// Verify signature with mismatching format
ok_status(!SecKeyRawVerify(pubKey, kSecPaddingSigRaw,
EC_SigDigest, sizeof(EC_SigDigest), EC_P256_SigDER, sizeof(EC_P256_SigDER)), "verify DER sig with RAW option");

ok_status(!SecKeyRawVerify(pubKey, kSecPaddingPKCS1,
EC_SigDigest, sizeof(EC_SigDigest), EC_P256_SigRaw, sizeof(EC_P256_SigRaw)), "verify RAW sig with DER something");

// Sign something in each format
ok_status(SecKeyRawSign(privKey, kSecPaddingPKCS1,
EC_SigDigest, sizeof(EC_SigDigest), EC_signature_DER, &EC_signature_DER_size), "sign DER sig on something");

ok_status(SecKeyRawSign(privKey, kSecPaddingSigRaw,
EC_SigDigest, sizeof(EC_SigDigest), EC_signature_RAW, &EC_signature_RAW_size), "sign RAW sig on something");

// Verify expecting that verification does the right thing.
ok_status(SecKeyRawVerify(pubKey, kSecPaddingPKCS1,
EC_SigDigest, sizeof(EC_SigDigest), EC_signature_DER, EC_signature_DER_size), "verify DER sig on something");

ok_status(SecKeyRawVerify(pubKey, kSecPaddingSigRaw,
EC_SigDigest, sizeof(EC_SigDigest), EC_signature_RAW, EC_signature_RAW_size), "verify RAW sig on something");

// Verify signature with one integer larger than it should be
ok_status(!SecKeyRawVerify(pubKey, kSecPaddingPKCS1,
EC_SigDigest, sizeof(EC_SigDigest), EC_P256_SigDER_LargeInt, sizeof(EC_P256_SigDER_LargeInt)),
"verify DER sig with large integer");

CFReleaseNull(KeyArrayPub);
CFReleaseNull(KeyArrayPriv);
}

#if !TARGET_OS_IPHONE
static inline bool CFEqualSafe(CFTypeRef left, CFTypeRef right)
{
if (left == NULL || right == NULL)
return left == right;
else
return CFEqual(left, right);
}
#endif

static void testkeyexchange(unsigned long keySizeInBits)
{
size_t keySizeInBytes = (keySizeInBits + 7) / 8;
OSStatus status;

SecKeyRef pubKey1 = NULL, privKey1 = NULL;
NSDictionary *kgp1 = @{
(id)kSecAttrKeyType: (id)kSecAttrKeyTypeEC,
(id)kSecAttrKeySizeInBits: @(keySizeInBits),
(id)kSecAttrIsPermanent: @NO,
(id)kSecAttrLabel: @"sectests:kc-41-sececkey:testkeyexchange",
(id)kSecUseDataProtectionKeychain: @YES,
};
ok_status(status = SecKeyGeneratePair((CFDictionaryRef)kgp1, &pubKey1, &privKey1),
"Generate %ld bit (%ld byte) EC keypair (status = %d)",
keySizeInBits, keySizeInBytes, (int)status);

SecKeyRef pubKey1bis = SecKeyCopyPublicKey(privKey1);
ok(pubKey1bis!=NULL);
is(CFGetRetainCount(pubKey1bis),1);
CFDataRef PubKey1Data = SecKeyCopyExternalRepresentation(pubKey1, NULL);
CFDataRef PubKey1bisData = SecKeyCopyExternalRepresentation(pubKey1bis, NULL);
isnt(CFDataGetLength(PubKey1Data),0);
ok(CFEqual(PubKey1Data,PubKey1bisData));
CFReleaseNull(PubKey1Data);
CFReleaseNull(PubKey1bisData);
CFReleaseNull(pubKey1bis);

SecKeyRef pubKey2 = NULL, privKey2 = NULL;
NSDictionary *kgp2 = @{
(id)kSecAttrKeyType: (id)kSecAttrKeyTypeEC,
(id)kSecAttrKeySizeInBits: @(keySizeInBits),
(id)kSecAttrIsPermanent: @NO,
(id)kSecAttrLabel: @"sectests:kc-41-sececkey:testkeyexchange",
(id)kSecUseDataProtectionKeychain: @NO,
};
ok_status(status = SecKeyGeneratePair((CFDictionaryRef)kgp2, &pubKey2, &privKey2),
"Generate %ld bit (%ld byte) EC keypair (status = %d)",
keySizeInBits, keySizeInBytes, (int)status);

const SecKeyAlgorithm algos[] = {
kSecKeyAlgorithmECDHKeyExchangeStandard,
kSecKeyAlgorithmECDHKeyExchangeStandardX963SHA1,
kSecKeyAlgorithmECDHKeyExchangeStandardX963SHA224,
kSecKeyAlgorithmECDHKeyExchangeStandardX963SHA256,
kSecKeyAlgorithmECDHKeyExchangeStandardX963SHA384,
kSecKeyAlgorithmECDHKeyExchangeStandardX963SHA512,
kSecKeyAlgorithmECDHKeyExchangeCofactor,
kSecKeyAlgorithmECDHKeyExchangeCofactorX963SHA1,
kSecKeyAlgorithmECDHKeyExchangeCofactorX963SHA224,
kSecKeyAlgorithmECDHKeyExchangeCofactorX963SHA256,
kSecKeyAlgorithmECDHKeyExchangeCofactorX963SHA384,
kSecKeyAlgorithmECDHKeyExchangeCofactorX963SHA512,
};

// Strange size to test borderline conditions.
const CFIndex requestedSize = 273;
NSDictionary *params = @{
(id)kSecKeyKeyExchangeParameterRequestedSize: @(requestedSize),
(id)kSecKeyKeyExchangeParameterSharedInfo: [NSData dataWithBytes:"shared" length:5],
};

for (size_t ix = 0; ix < array_size(algos); ++ix) {
CFErrorRef error = NULL;

NSData *secret1 = (__bridge_transfer NSData *)SecKeyCopyKeyExchangeResult(privKey1, algos[ix], pubKey2, (CFDictionaryRef)params, &error);
ok(secret1 != NULL && CFGetTypeID((__bridge CFTypeRef) secret1) == CFDataGetTypeID());
CFReleaseNull(error);

NSData *secret2 = (__bridge_transfer NSData *)SecKeyCopyKeyExchangeResult(privKey2, algos[ix], pubKey1, (CFDictionaryRef)params, &error);
ok(secret2 != NULL && CFGetTypeID((__bridge CFTypeRef) secret2) == CFDataGetTypeID());
CFReleaseNull(error);

eq_cf((__bridge CFTypeRef) secret1, (__bridge CFTypeRef) secret2, "results of key exchange are equal");
if (algos[ix] != kSecKeyAlgorithmECDHKeyExchangeCofactor && algos[ix] != kSecKeyAlgorithmECDHKeyExchangeStandard) {
is(secret1.length, requestedSize, "generated response has expected length");
}
}

// Test proper failure modes.
NSError *error;
NSData *res;
res = CFBridgingRelease(SecKeyCopyKeyExchangeResult(privKey1, kSecKeyAlgorithmECDHKeyExchangeStandardX963SHA1, pubKey2, (CFDictionaryRef)@{}, (void *)&error));
is(res, nil, "keyExchange with missing required attributes did not fail");
res = CFBridgingRelease(SecKeyCopyKeyExchangeResult(privKey1, kSecKeyAlgorithmECDHKeyExchangeStandardX963SHA1, pubKey2, (CFDictionaryRef)@{(id)kSecKeyKeyExchangeParameterRequestedSize: @"16"}, (void *)&error));
is(res, nil, "keyExchange with improper typed attributes did not fail");
res = CFBridgingRelease(SecKeyCopyKeyExchangeResult(privKey1, kSecKeyAlgorithmECDHKeyExchangeStandardX963SHA1, pubKey2, (CFDictionaryRef)@{(id)kSecKeyKeyExchangeParameterRequestedSize: @16, (id)kSecKeyKeyExchangeParameterSharedInfo: @"sharedInfo"}, (void *)&error));
is(res, nil, "keyExchange with improper typed attributes did not fail");

CFReleaseNull(privKey1);
CFReleaseNull(pubKey1);
CFReleaseNull(privKey2);
CFReleaseNull(pubKey2);

SecItemDelete((CFDictionaryRef)@{
(id)kSecClass: (id)kSecClassKey,
(id)kSecAttrLabel: @"sectests:kc-41-sececkey:testkeyexchange",
});
}

/* Test basic add delete update copy matching stuff. */
static void tests(void)
{
testsignformat();

testkeygen(192);
#if TARGET_OS_IPHONE
testkeygen(224);
#endif
testkeygen(256);
testkeygen(384);
testkeygen(521);

testkeygen2(192);
#if TARGET_OS_IPHONE
testkeygen2(224);
#endif
testkeygen2(256);
testkeygen2(384);
testkeygen2(521);

testkeygen3(256);
testkeygen3(384);
testkeygen3(521);

testkeyexchange(256);
testkeyexchange(384);
testkeyexchange(521);
}

int kc_41_sececkey(int argc, char *const *argv)
{
plan_tests(281);

tests();

return 0;
}