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ac9c63a @macbury Working with pin code
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1 //
2 // OAHMAC_SHA1SignatureProvider.m
3 // OAuthConsumer
4 //
5 // Created by Jon Crosby on 10/19/07.
6 // Copyright 2007 Kaboomerang LLC. All rights reserved.
7 //
8 // Permission is hereby granted, free of charge, to any person obtaining a copy
9 // of this software and associated documentation files (the "Software"), to deal
10 // in the Software without restriction, including without limitation the rights
11 // to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
12 // copies of the Software, and to permit persons to whom the Software is
13 // furnished to do so, subject to the following conditions:
14 //
15 // The above copyright notice and this permission notice shall be included in
16 // all copies or substantial portions of the Software.
17 //
18 // THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
19 // IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
20 // FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
21 // AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
22 // LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
23 // OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
24 // THE SOFTWARE.
25
26
27 #import "OAHMAC_SHA1SignatureProvider.h"
28 #import <CommonCrypto/CommonHMAC.h>
29
30 #include "Base64Transcoder.h"
31
32 @implementation OAHMAC_SHA1SignatureProvider
33
34 - (NSString *)name
35 {
36 return @"HMAC-SHA1";
37 }
38
39 - (NSString *)signClearText:(NSString *)text withSecret:(NSString *)secret
40 {
41 NSData *secretData = [secret dataUsingEncoding:NSUTF8StringEncoding];
42 NSData *clearTextData = [text dataUsingEncoding:NSUTF8StringEncoding];
43 unsigned char result[20];
44 CCHmac(kCCHmacAlgSHA1, [secretData bytes], [secretData length], [clearTextData bytes], [clearTextData length], result);
45
46 //Base64 Encoding
47
48 char base64Result[32];
49 size_t theResultLength = 32;
50 Base64EncodeData(result, 20, base64Result, &theResultLength);
51 NSData *theData = [NSData dataWithBytes:base64Result length:theResultLength];
52
53 NSString *base64EncodedResult = [[NSString alloc] initWithData:theData encoding:NSUTF8StringEncoding];
54
55 return [base64EncodedResult autorelease];
56 }
57
58 @end
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