projects / apple / security.git / blame
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| 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 | * FeeDES.h - generic, portable DES encryption object | |
| 12 | * | |
| 13 | * Revision History | |
| 14 | * ---------------- | |
| 15 | * 26 Aug 96 Doug Mitchell at NeXT | |
| 16 | * Created. | |
| 17 | */ | |
| 18 | ||
| 19 | #ifndef _CK_FEEDES_H_ | |
| 20 | #define _CK_FEEDES_H_ | |
| 21 | ||
| 22 | #if !defined(__MACH__) | |
| 23 | #include <ckconfig.h> | |
| 24 | #include <feeTypes.h> | |
| 25 | #else | |
| 26 | #include <security_cryptkit/ckconfig.h> | |
| 27 | #include <security_cryptkit/feeTypes.h> | |
| 28 | #endif | |
| 29 | ||
| 30 | #if CRYPTKIT_SYMMETRIC_ENABLE | |
| 31 | ||
| 32 | #ifdef __cplusplus | |
| 33 | extern "C" { | |
| 34 | #endif | |
| 35 | ||
| 36 | #define FEE_DES_MIN_STATE_SIZE 8 | |
| 37 | ||
| 38 | /* | |
| 39 | * Opaque object handle. | |
| 40 | */ | |
| 41 | typedef void *feeDES; | |
| 42 | ||
| 43 | /* | |
| 44 | * Alloc and init a feeDES object with specified initial state. | |
| 45 | * State must be at least 8 bytes; only 8 bytes are used, ignoring | |
| 46 | * MSB of each bytes. | |
| 47 | */ | |
| 48 | feeDES feeDESNewWithState(const unsigned char *state, | |
| 49 | unsigned stateLen); | |
| 50 | ||
| 51 | void feeDESFree(feeDES des); | |
| 52 | ||
| 53 | /* | |
| 54 | * Set new initial state. | |
| 55 | */ | |
| 56 | feeReturn feeDESSetState(feeDES des, | |
| 57 | const unsigned char *state, | |
| 58 | unsigned stateLen); | |
| 59 | ||
| 60 | /* | |
| 61 | * Set block or chain (CBC) mode. CBC is default. | |
| 62 | */ | |
| 63 | void feeDESSetBlockMode(feeDES des); | |
| 64 | void feeDESSetChainMode(feeDES des); | |
| 65 | ||
| 66 | /* | |
| 67 | * Plaintext block size. | |
| 68 | */ | |
| 69 | unsigned feeDESPlainBlockSize(feeDES des); | |
| 70 | ||
| 71 | /* | |
| 72 | * Ciphertext block size used for decryption. | |
| 73 | */ | |
| 74 | unsigned feeDESCipherBlockSize(feeDES des); | |
| 75 | ||
| 76 | /* | |
| 77 | * Required size of buffer for ciphertext, upon encrypting one | |
| 78 | * block of plaintext. | |
| 79 | */ | |
| 80 | unsigned feeDESCipherBufSize(feeDES des); | |
| 81 | ||
| 82 | /* | |
| 83 | ||
| 84 | * Return the size of ciphertext to hold specified size of plaintext. | |
| 85 | ||
| 86 | */ | |
| 87 | ||
| 88 | unsigned feeDESCipherTextSize(feeDES des, unsigned plainTextSize); | |
| 89 | ||
| 90 | ||
| 91 | /* | |
| 92 | * Key size in bits. | |
| 93 | */ | |
| 94 | unsigned feeDESKeySize(feeDES des); | |
| 95 | ||
| 96 | /* | |
| 97 | * Encrypt a block or less of data. Caller malloc's cipherText. Generates | |
| 98 | * up to (2 * feeDESBlockSize) bytes of cipherText. If plainTextLen is | |
| 99 | * less than feeDESBlockSize, finalBlock must be true. | |
| 100 | */ | |
| 101 | feeReturn feeDESEncryptBlock(feeDES des, | |
| 102 | const unsigned char *plainText, | |
| 103 | unsigned plainTextLen, | |
| 104 | unsigned char *cipherText, | |
| 105 | unsigned *cipherTextLen, // RETURNED | |
| 106 | int finalBlock); | |
| 107 | ||
| 108 | /* | |
| 109 | * Decrypt (exactly) a block of data. Caller malloc's plainText. Always | |
| 110 | * generates feeDESBlockSize bytes of plainText, unless 'finalBlock' is | |
| 111 | * non-zero (in which case feeDESBlockSize or less bytes of plainText are | |
| 112 | * generated). | |
| 113 | */ | |
| 114 | feeReturn feeDESDecryptBlock(feeDES des, | |
| 115 | const unsigned char *cipherText, | |
| 116 | unsigned cipherTextLen, | |
| 117 | unsigned char *plainText, | |
| 118 | unsigned *plainTextLen, // RETURNED | |
| 119 | int finalBlock); | |
| 120 | ||
| 121 | /* | |
| 122 | * Convenience routines to encrypt & decrypt multi-block data. | |
| 123 | */ | |
| 124 | feeReturn feeDESEncrypt(feeDES des, | |
| 125 | const unsigned char *plainText, | |
| 126 | unsigned plainTextLen, | |
| 127 | unsigned char **cipherText, // malloc'd and RETURNED | |
| 128 | unsigned *cipherTextLen); // RETURNED | |
| 129 | ||
| 130 | feeReturn feeDESDecrypt(feeDES des, | |
| 131 | const unsigned char *cipherText, | |
| 132 | unsigned cipherTextLen, | |
| 133 | unsigned char **plainText, // malloc'd and RETURNED | |
| 134 | unsigned *plainTextLen); // RETURNED | |
| 135 | ||
| 136 | #ifdef __cplusplus | |
| 137 | } | |
| 138 | #endif | |
| 139 | ||
| 140 | #endif /* CRYPTKIT_SYMMETRIC_ENABLE */ | |
| 141 | #endif /*_CK_FEEDES_H_*/ |