projects / apple / security.git / blame
| Commit | Line | Data |
|---|---|---|
| b1ab9ed8 A |
1 | /* Copyright (c) 1998 Apple Computer, Inc. All rights reserved. |
| 2 | * | |
| 3 | * NOTICE: USE OF THE MATERIALS ACCOMPANYING THIS NOTICE IS SUBJECT | |
| 4 | * TO THE TERMS OF THE SIGNED "FAST ELLIPTIC ENCRYPTION (FEE) REFERENCE | |
| 5 | * SOURCE CODE EVALUATION AGREEMENT" BETWEEN APPLE COMPUTER, INC. AND THE | |
| 6 | * ORIGINAL LICENSEE THAT OBTAINED THESE MATERIALS FROM APPLE COMPUTER, | |
| 7 | * INC. ANY USE OF THESE MATERIALS NOT PERMITTED BY SUCH AGREEMENT WILL | |
| 8 | * EXPOSE YOU TO LIABILITY. | |
| 9 | *************************************************************************** | |
| 10 | * | |
| 11 | * FeeHash.c - generic, portable MD5 hash object | |
| 12 | * | |
| 13 | * Revision History | |
| 14 | * ---------------- | |
| 15 | * 10/06/98 ap | |
| 16 | * Changed to compile with C++. | |
| 17 | * 22 Aug 96 Doug Mitchell at NeXT | |
| 18 | * Created. | |
| 19 | */ | |
| 20 | ||
| 21 | #include "ckconfig.h" | |
| 22 | ||
| 23 | #if CRYPTKIT_MD5_ENABLE | |
| 24 | ||
| 25 | #include "feeTypes.h" | |
| 26 | #include "feeHash.h" | |
| 27 | #include "ckMD5.h" | |
| 28 | #include "falloc.h" | |
| 29 | #include "platform.h" | |
| 30 | ||
| 31 | /* | |
| 32 | * Private data for this object. A feeHash handle is cast to aa pointer | |
| 33 | * to one of these. | |
| 34 | */ | |
| 35 | typedef struct { | |
| 36 | MD5Context context; | |
| 37 | int isDone; | |
| 38 | unsigned char digest[MD5_DIGEST_SIZE]; | |
| 39 | } hashInst; | |
| 40 | ||
| 41 | /* | |
| 42 | * Alloc and init an empty hash object. | |
| 43 | */ | |
| 44 | feeHash feeHashAlloc(void) | |
| 45 | { | |
| 46 | hashInst *hinst; | |
| 47 | ||
| 48 | hinst = (hashInst *) fmalloc(sizeof(hashInst)); | |
| 49 | MD5Init(&hinst->context); | |
| 50 | hinst->isDone = 0; | |
| 51 | return hinst; | |
| 52 | } | |
| 53 | ||
| 54 | void feeHashReinit(feeHash hash) | |
| 55 | { | |
| 56 | hashInst *hinst = (hashInst *) hash; | |
| 57 | ||
| 58 | MD5Init(&hinst->context); | |
| 59 | hinst->isDone = 0; | |
| 60 | } | |
| 61 | ||
| 62 | /* | |
| 63 | * Free a hash object. | |
| 64 | */ | |
| 65 | void feeHashFree(feeHash hash) | |
| 66 | { | |
| 67 | hashInst *hinst = (hashInst *) hash; | |
| 68 | ||
| 69 | memset(hinst, 0, sizeof(hashInst)); | |
| 70 | ffree(hinst); | |
| 71 | } | |
| 72 | ||
| 73 | /* | |
| 74 | * Add some data to the hash object. | |
| 75 | */ | |
| 76 | void feeHashAddData(feeHash hash, | |
| 77 | const unsigned char *data, | |
| 78 | unsigned dataLen) | |
| 79 | { | |
| 80 | hashInst *hinst = (hashInst *) hash; | |
| 81 | ||
| 82 | if(hinst->isDone) { | |
| 83 | /* | |
| 84 | * Log some kind of error here... | |
| 85 | */ | |
| 86 | return; | |
| 87 | } | |
| 88 | MD5Update(&hinst->context, data, dataLen); | |
| 89 | } | |
| 90 | ||
| 91 | /* | |
| 92 | * Obtain a pointer to completed message digest, and the length of the digest. | |
| 93 | */ | |
| 94 | unsigned char *feeHashDigest(feeHash hash) | |
| 95 | { | |
| 96 | hashInst *hinst = (hashInst *) hash; | |
| 97 | ||
| 98 | if(!hinst->isDone) { | |
| 99 | MD5Final(&hinst->context, hinst->digest); | |
| 100 | hinst->isDone = 1; | |
| 101 | } | |
| 102 | return hinst->digest; | |
| 103 | } | |
| 104 | ||
| 105 | unsigned feeHashDigestLen(void) | |
| 106 | { | |
| 107 | return MD5_DIGEST_SIZE; | |
| 108 | } | |
| 109 | ||
| 110 | #endif /* CRYPTKIT_MD5_ENABLE*/ |