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Tombo: Commit

TOMBO source code


Commit MetaInfo

Revision14dc9092f5137fe53d45a62a229ceb82345ee6e6 (tree)
Time2012-04-08 21:39:17
AuthorHirami <tomohisa.hirami@nift...>
CommiterHirami

Log Message

Implement crypt related features.

Blowfish and CBC methods.
MD5 methods.

Change Summary

Incremental Difference

--- a/iOS/Tombo/Tombo.xcodeproj/project.pbxproj
+++ b/iOS/Tombo/Tombo.xcodeproj/project.pbxproj
@@ -11,6 +11,7 @@
1111 922F592A15295FAA009B1E32 /* EditViewController.m in Sources */ = {isa = PBXBuildFile; fileRef = 922F592915295FAA009B1E32 /* EditViewController.m */; };
1212 9243C7B51529D8610092B506 /* DetailViewController.m in Sources */ = {isa = PBXBuildFile; fileRef = 9243C7B41529D8610092B506 /* DetailViewController.m */; };
1313 9243C7BC152AC7430092B506 /* NewFolderAlert.m in Sources */ = {isa = PBXBuildFile; fileRef = 9243C7BB152AC7430092B506 /* NewFolderAlert.m */; };
14+ 9243C7ED1531ADA80092B506 /* CryptCore.m in Sources */ = {isa = PBXBuildFile; fileRef = 9243C7EC1531ADA80092B506 /* CryptCore.m */; };
1415 92DE332D151E277D00AD06EC /* UIKit.framework in Frameworks */ = {isa = PBXBuildFile; fileRef = 92DE332C151E277D00AD06EC /* UIKit.framework */; };
1516 92DE332F151E277D00AD06EC /* Foundation.framework in Frameworks */ = {isa = PBXBuildFile; fileRef = 92DE332E151E277D00AD06EC /* Foundation.framework */; };
1617 92DE3331151E277D00AD06EC /* CoreGraphics.framework in Frameworks */ = {isa = PBXBuildFile; fileRef = 92DE3330151E277D00AD06EC /* CoreGraphics.framework */; };
@@ -54,6 +55,8 @@
5455 9243C7B41529D8610092B506 /* DetailViewController.m */ = {isa = PBXFileReference; fileEncoding = 4; lastKnownFileType = sourcecode.c.objc; path = DetailViewController.m; sourceTree = "<group>"; };
5556 9243C7BA152AC7430092B506 /* NewFolderAlert.h */ = {isa = PBXFileReference; fileEncoding = 4; lastKnownFileType = sourcecode.c.h; path = NewFolderAlert.h; sourceTree = "<group>"; };
5657 9243C7BB152AC7430092B506 /* NewFolderAlert.m */ = {isa = PBXFileReference; fileEncoding = 4; lastKnownFileType = sourcecode.c.objc; path = NewFolderAlert.m; sourceTree = "<group>"; };
58+ 9243C7EB1531ADA80092B506 /* CryptCore.h */ = {isa = PBXFileReference; fileEncoding = 4; lastKnownFileType = sourcecode.c.h; path = CryptCore.h; sourceTree = "<group>"; };
59+ 9243C7EC1531ADA80092B506 /* CryptCore.m */ = {isa = PBXFileReference; fileEncoding = 4; lastKnownFileType = sourcecode.c.objc; path = CryptCore.m; sourceTree = "<group>"; };
5760 92DE3328151E277D00AD06EC /* Tombo.app */ = {isa = PBXFileReference; explicitFileType = wrapper.application; includeInIndex = 0; path = Tombo.app; sourceTree = BUILT_PRODUCTS_DIR; };
5861 92DE332C151E277D00AD06EC /* UIKit.framework */ = {isa = PBXFileReference; lastKnownFileType = wrapper.framework; name = UIKit.framework; path = System/Library/Frameworks/UIKit.framework; sourceTree = SDKROOT; };
5962 92DE332E151E277D00AD06EC /* Foundation.framework */ = {isa = PBXFileReference; lastKnownFileType = wrapper.framework; name = Foundation.framework; path = System/Library/Frameworks/Foundation.framework; sourceTree = SDKROOT; };
@@ -157,6 +160,8 @@
157160 92DE3333151E277D00AD06EC /* Supporting Files */,
158161 92DE33841522998700AD06EC /* Storage.h */,
159162 92DE33851522998700AD06EC /* Storage.m */,
163+ 9243C7EB1531ADA80092B506 /* CryptCore.h */,
164+ 9243C7EC1531ADA80092B506 /* CryptCore.m */,
160165 92DE338E1522FFEB00AD06EC /* FileItem.h */,
161166 92DE338F1522FFEB00AD06EC /* FileItem.m */,
162167 9243C7B31529D8610092B506 /* DetailViewController.h */,
@@ -332,6 +337,7 @@
332337 9228CF2815298F7200E20355 /* EditCancelAlert.m in Sources */,
333338 9243C7B51529D8610092B506 /* DetailViewController.m in Sources */,
334339 9243C7BC152AC7430092B506 /* NewFolderAlert.m in Sources */,
340+ 9243C7ED1531ADA80092B506 /* CryptCore.m in Sources */,
335341 );
336342 runOnlyForDeploymentPostprocessing = 0;
337343 };
--- /dev/null
+++ b/iOS/Tombo/Tombo/CryptCore.h
@@ -0,0 +1,10 @@
1+#import <Foundation/Foundation.h>
2+
3+@interface CryptCore : NSObject
4+
5++ (void)md5:(NSString *)input buffer:(unsigned char*)digest;
6+
7++ (NSString *)bytes2hex:(unsigned char *)data length:(NSUInteger) len;
8+
9++ (BOOL)selftest;
10+@end
--- /dev/null
+++ b/iOS/Tombo/Tombo/CryptCore.m
@@ -0,0 +1,154 @@
1+#import <CommonCrypto/CommonDigest.h>
2+#import <CommonCrypto/CommonCryptor.h>
3+#import "CryptCore.h"
4+
5+@implementation CryptCore
6+
7+// digest size should be CC_MD5_DIGEST_LENGTH
8++ (void)md5:(NSString *)input buffer:(unsigned char*)digest {
9+ const char *cStr = [input UTF8String];
10+ CC_MD5(cStr, strlen(cStr), digest);
11+}
12+
13++ (NSString *)bytes2hex:(unsigned char *)data length:(NSUInteger) len {
14+ NSMutableString *out = [NSMutableString stringWithCapacity:len];
15+ for (int i = 0; i < len; i++) {
16+ [out appendFormat:@"%02x", data[i]];
17+ }
18+ return out;
19+}
20+
21++ (BOOL)selftest {
22+ unsigned char key1[] = {0x83, 0x45, 0x92, 0x17, 0x68, 0xA9, 0x35, 0xDF,
23+ 0x25, 0x58, 0x9F, 0x11, 0x72, 0x87, 0x99, 0xFE};
24+ unsigned char dat1[] = {0x85, 0x28, 0xF9, 0x43, 0xE8, 0xC2, 0x12, 0x50};
25+
26+ unsigned char enc1[] = {0x87, 0x66, 0x8b, 0xc8, 0xeb, 0xfc, 0xe6, 0xde};
27+
28+ unsigned char buf[16];
29+ if (![CryptCore encrypt:key1 keyLen:16 plain:dat1 dataLen:8 enc:buf]) {
30+ NSLog(@"Test1: Encrypt fail.");
31+ return NO;
32+ }
33+
34+ if (![CryptCore check:enc1 and:buf length:8]) {
35+ NSLog(@"Test1: Check fail.");
36+ return NO;
37+ }
38+
39+ unsigned char dat2[] = {0x85, 0x28, 0xF9, 0x43, 0xE8, 0xC2, 0x12, 0x50,
40+ 0x48, 0x02, 0xE1, 0x45, 0x69, 0x3C, 0x8A, 0x9F};
41+ unsigned char enc2[] = {0xbd, 0xfd, 0x34, 0xa6, 0xb2, 0xa6, 0xed, 0xb9,
42+ 0x3f, 0x23, 0x3f, 0x73, 0x5a, 0x52, 0x09, 0xfb};
43+ if (![CryptCore encrypt:key1 keyLen:16 plain:dat2 dataLen:16 enc:buf]) {
44+ NSLog(@"Test2: Encrypt fail.");
45+ return NO;
46+ }
47+ if (![CryptCore check:enc2 and:buf length:16]) {
48+ NSLog(@"Test2: Check fail.");
49+ return NO;
50+ }
51+ if (![CryptCore decrypt:key1 keyLen:16 crypt:enc1 dataLen:8 plain:buf]) {
52+ NSLog(@"Test3: Decrypt fail.");
53+ return NO;
54+ }
55+ if (![CryptCore check:dat1 and:buf length:8]) {
56+ NSLog(@"Test3: Check fail.");
57+ return NO;
58+ }
59+
60+ if (![CryptCore decrypt:key1 keyLen:16 crypt:enc2 dataLen:16 plain:buf]) {
61+ NSLog(@"Test4: Decrypt fail.");
62+ return NO;
63+ }
64+ if (![CryptCore check:dat2 and:buf length:16]) {
65+ NSLog(@"Test4: Check fail.");
66+ return NO;
67+ }
68+ return YES;
69+}
70+
71++ (BOOL) check:(unsigned char *)c1 and:(unsigned char *)c2 length:(size_t)len {
72+ for (size_t i = 0; i < len; i++) {
73+ if (c1[i] != c2[i]) return NO;
74+ }
75+ return YES;
76+}
77+
78++ (BOOL)encrypt:(unsigned char*)key keyLen:(size_t)keyLen
79+ plain:(unsigned char*)dat dataLen:(size_t)dataLen
80+ enc:(unsigned char*)enc {
81+ unsigned char inBuffer[8];
82+ unsigned char buffer[8];
83+ unsigned char *iv = (unsigned char*)[@"BLOWFISH" UTF8String];
84+ unsigned char zeroIv[] = {0, 0, 0, 0, 0, 0, 0, 0};
85+
86+ unsigned char *vector = iv;
87+
88+ CCCryptorRef ref;
89+ CCCryptorCreate(kCCEncrypt, kCCAlgorithmBlowfish, 0,
90+ key, keyLen, NULL, &ref);
91+
92+ size_t numCrypt;
93+
94+ int j;
95+ int n = dataLen / 8;
96+
97+ if (n == 1) {
98+ vector = zeroIv;
99+ }
100+
101+ for (j = 0; j < n; j++) {
102+ for (int i = 0; i < 8; i++) {
103+ inBuffer[i] = dat[i+ j * 8] ^ vector[i];
104+ }
105+ CCCryptorReset(ref, NULL);
106+ CCCryptorUpdate(ref, inBuffer, 8, buffer, 8, &numCrypt);
107+ memcpy(enc + j * 8, buffer, 8);
108+ vector = buffer;
109+ }
110+
111+ CCCryptorFinal(ref, buffer, 8, &numCrypt);
112+ CCCryptorRelease(ref);
113+
114+ return YES;
115+}
116+
117++ (BOOL)decrypt:(unsigned char*)key keyLen:(size_t)keyLen
118+ crypt:(unsigned char*)crypt dataLen:(size_t)dataLen
119+ plain:(unsigned char*)plain {
120+
121+ unsigned char buffer[8];
122+ unsigned char *iv = (unsigned char*)[@"BLOWFISH" UTF8String];
123+ unsigned char *vector = iv;
124+
125+ CCCryptorRef ref;
126+ CCCryptorCreate(kCCDecrypt, kCCAlgorithmBlowfish, 0, key, keyLen, NULL, &ref);
127+
128+ size_t numCrypt;
129+ int j;
130+ int n = dataLen / 8;
131+
132+ if (n == 1) {
133+ CCCryptorUpdate(ref, crypt, 8, plain, 8, &numCrypt);
134+ CCCryptorFinal(ref, buffer, 8, &numCrypt);
135+ CCCryptorRelease(ref);
136+ return YES;
137+ }
138+
139+ for (j = 0; j < n; j++) {
140+ CCCryptorReset(ref, NULL);
141+ CCCryptorUpdate(ref, crypt + j * 8, 8, buffer, 8, &numCrypt);
142+ for (int i = 0; i < 8; i++) {
143+ buffer[i] = buffer[i] ^ vector[i];
144+ }
145+ memcpy(plain + j * 8, buffer, 8);
146+ vector = crypt + j * 8;
147+ }
148+
149+ CCCryptorFinal(ref, buffer, 8, &numCrypt);
150+ CCCryptorRelease(ref);
151+
152+ return YES;
153+}
154+@end
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