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sha1: allow limiting the size of the data passed to SHA1_Update()
[thirdparty/git.git] / compat / apple-common-crypto.h
CommitLineData
3ef2bcad
JH
1/* suppress inclusion of conflicting openssl functions */
2#define OPENSSL_NO_MD5
3#define HEADER_HMAC_H
4#define HEADER_SHA_H
5#include <CommonCrypto/CommonHMAC.h>
6#define HMAC_CTX CCHmacContext
7#define HMAC_Init(hmac, key, len, algo) CCHmacInit(hmac, algo, key, len)
8#define HMAC_Update CCHmacUpdate
9#define HMAC_Final(hmac, hash, ptr) CCHmacFinal(hmac, hash)
10#define HMAC_CTX_cleanup(ignore)
11#define EVP_md5(...) kCCHmacAlgMD5
12#if __MAC_OS_X_VERSION_MIN_REQUIRED >= 1070
13#define APPLE_LION_OR_NEWER
14#include <Security/Security.h>
15/* Apple's TYPE_BOOL conflicts with config.c */
16#undef TYPE_BOOL
17#endif
18
001fd7a9
APD
19#ifndef SHA1_MAX_BLOCK_SIZE
20#error Using Apple Common Crypto library requires setting SHA1_MAX_BLOCK_SIZE
21#endif
22
3ef2bcad
JH
23#ifdef APPLE_LION_OR_NEWER
24#define git_CC_error_check(pattern, err) \
25 do { \
26 if (err) { \
27 die(pattern, (long)CFErrorGetCode(err)); \
28 } \
29 } while(0)
30
31#define EVP_EncodeBlock git_CC_EVP_EncodeBlock
32static inline int git_CC_EVP_EncodeBlock(unsigned char *out,
33 const unsigned char *in, int inlen)
34{
35 CFErrorRef err;
36 SecTransformRef encoder;
37 CFDataRef input, output;
38 CFIndex length;
39
40 encoder = SecEncodeTransformCreate(kSecBase64Encoding, &err);
41 git_CC_error_check("SecEncodeTransformCreate failed: %ld", err);
42
43 input = CFDataCreate(kCFAllocatorDefault, in, inlen);
44 SecTransformSetAttribute(encoder, kSecTransformInputAttributeName,
45 input, &err);
46 git_CC_error_check("SecTransformSetAttribute failed: %ld", err);
47
48 output = SecTransformExecute(encoder, &err);
49 git_CC_error_check("SecTransformExecute failed: %ld", err);
50
51 length = CFDataGetLength(output);
52 CFDataGetBytes(output, CFRangeMake(0, length), out);
53
54 CFRelease(output);
55 CFRelease(input);
56 CFRelease(encoder);
57
58 return (int)strlen((const char *)out);
59}
60
61#define EVP_DecodeBlock git_CC_EVP_DecodeBlock
62static int inline git_CC_EVP_DecodeBlock(unsigned char *out,
63 const unsigned char *in, int inlen)
64{
65 CFErrorRef err;
66 SecTransformRef decoder;
67 CFDataRef input, output;
68 CFIndex length;
69
70 decoder = SecDecodeTransformCreate(kSecBase64Encoding, &err);
71 git_CC_error_check("SecEncodeTransformCreate failed: %ld", err);
72
73 input = CFDataCreate(kCFAllocatorDefault, in, inlen);
74 SecTransformSetAttribute(decoder, kSecTransformInputAttributeName,
75 input, &err);
76 git_CC_error_check("SecTransformSetAttribute failed: %ld", err);
77
78 output = SecTransformExecute(decoder, &err);
79 git_CC_error_check("SecTransformExecute failed: %ld", err);
80
81 length = CFDataGetLength(output);
82 CFDataGetBytes(output, CFRangeMake(0, length), out);
83
84 CFRelease(output);
85 CFRelease(input);
86 CFRelease(decoder);
87
88 return (int)strlen((const char *)out);
89}
90#endif /* APPLE_LION_OR_NEWER */