projects / apple / security.git / blame
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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 | * FeeFEED.h - generic, portable FEED encryption object | |
| 12 | * | |
| 13 | * Revision History | |
| 14 | * ---------------- | |
| 15 | * 28 Aug 96 Doug Mitchell at NeXT | |
| 16 | * Created. | |
| 17 | */ | |
| 18 | ||
| 19 | #ifndef _CK_FEEFEED_H_ | |
| 20 | #define _CK_FEEFEED_H_ | |
| 21 | ||
| 22 | #if !defined(__MACH__) | |
| 23 | #include <ckconfig.h> | |
| 24 | #include <feeTypes.h> | |
| 25 | #include <feePublicKey.h> | |
| 26 | #else | |
| 27 | #include <security_cryptkit/ckconfig.h> | |
| 28 | #include <security_cryptkit/feeTypes.h> | |
| 29 | #include <security_cryptkit/feePublicKey.h> | |
| 30 | #endif | |
| 31 | ||
| 32 | #if CRYPTKIT_ASYMMETRIC_ENABLE | |
| 33 | ||
| 34 | #ifdef __cplusplus | |
| 35 | extern "C" { | |
| 36 | #endif | |
| 37 | ||
| 38 | /* | |
| 39 | * Opaque object handle. | |
| 40 | */ | |
| 41 | typedef void *feeFEED; | |
| 42 | ||
| 43 | /* | |
| 44 | * forEncrypt argument values. | |
| 45 | */ | |
| 46 | #define FF_DECRYPT 0 | |
| 47 | #define FF_ENCRYPT 1 | |
| 48 | ||
| 49 | /* | |
| 50 | * Alloc and init a feeFEED object associated with specified feePubKey | |
| 51 | * objects. | |
| 52 | */ | |
| 53 | feeFEED feeFEEDNewWithPubKey(feePubKey myPrivKey, | |
| 54 | feePubKey theirPubKey, | |
| 55 | int forEncrypt, // FF_DECRYPT, FF_ENCRYPT | |
| 56 | feeRandFcn randFcn, // optional | |
| 57 | void *randRef); | |
| 58 | ||
| 59 | void feeFEEDFree(feeFEED feed); | |
| 60 | ||
| 61 | /* | |
| 62 | * Plaintext block size. | |
| 63 | */ | |
| 64 | unsigned feeFEEDPlainBlockSize(feeFEED feed); | |
| 65 | ||
| 66 | /* | |
| 67 | * Ciphertext block size used for decryption. | |
| 68 | */ | |
| 69 | unsigned feeFEEDCipherBlockSize(feeFEED feed); | |
| 70 | ||
| 71 | /* | |
| 72 | * Calculate size of buffer currently needed to encrypt one block of | |
| 73 | * plaintext. | |
| 74 | */ | |
| 75 | unsigned feeFEEDCipherBufSize(feeFEED feed, | |
| 76 | int finalBlock); | |
| 77 | ||
| 78 | /* | |
| 79 | * Return the size of ciphertext currently needed to encrypt specified | |
| 80 | * size of plaintext. Also can be used to calculate size of ciphertext | |
| 81 | * which can be decrypted into specified size of plaintext. | |
| 82 | */ | |
| 83 | unsigned feeFEEDCipherTextSize(feeFEED feed, | |
| 84 | unsigned plainTextSize, | |
| 85 | int finalBlock); | |
| 86 | ||
| 87 | /* | |
| 88 | * Return the size of plaintext currently needed to decrypt specified size | |
| 89 | * of ciphertext. Also can be used to calculate size of plaintext | |
| 90 | * which can be encrypted into specified size of ciphertext. | |
| 91 | */ | |
| 92 | unsigned feeFEEDPlainTextSize(feeFEED feed, | |
| 93 | unsigned cipherTextSize, | |
| 94 | int finalBlock); // ignored if decrypting | |
| 95 | ||
| 96 | /* | |
| 97 | * Encrypt a block or less of data. Caller malloc's cipherText. | |
| 98 | */ | |
| 99 | feeReturn feeFEEDEncryptBlock(feeFEED feed, | |
| 100 | const unsigned char *plainText, | |
| 101 | unsigned plainTextLen, | |
| 102 | unsigned char *cipherText, | |
| 103 | unsigned *cipherTextLen, // RETURNED | |
| 104 | int finalBlock); | |
| 105 | ||
| 106 | /* | |
| 107 | * Decrypt (exactly) a block of data. Caller malloc's plainText. Always | |
| 108 | * generates feeFEEDBlockSize bytes of plainText, unless 'finalBlock' is | |
| 109 | * non-zero (in which case feeFEEDBlockSize or less bytes of plainText are | |
| 110 | * generated). | |
| 111 | */ | |
| 112 | feeReturn feeFEEDDecryptBlock(feeFEED feed, | |
| 113 | const unsigned char *cipherText, | |
| 114 | unsigned cipherTextLen, | |
| 115 | unsigned char *plainText, | |
| 116 | unsigned *plainTextLen, // RETURNED | |
| 117 | int finalBlock); | |
| 118 | ||
| 119 | /* | |
| 120 | * Convenience routines to encrypt & decrypt multi-block data. | |
| 121 | */ | |
| 122 | feeReturn feeFEEDEncrypt(feeFEED feed, | |
| 123 | const unsigned char *plainText, | |
| 124 | unsigned plainTextLen, | |
| 125 | unsigned char **cipherText, // malloc'd and RETURNED | |
| 126 | unsigned *cipherTextLen); // RETURNED | |
| 127 | ||
| 128 | feeReturn feeFEEDDecrypt(feeFEED feed, | |
| 129 | const unsigned char *cipherText, | |
| 130 | unsigned cipherTextLen, | |
| 131 | unsigned char **plainText, // malloc'd and RETURNED | |
| 132 | unsigned *plainTextLen); // RETURNED | |
| 133 | ||
| 134 | #ifdef __cplusplus | |
| 135 | } | |
| 136 | #endif | |
| 137 | ||
| 138 | #endif /* CRYPTKIT_ASYMMETRIC_ENABLE */ | |
| 139 | ||
| 140 | #endif /*_CK_FEEFEED_H_*/ |