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 | * feeFEEDExp.h - generic FEED encryption object using 2:1 expansion | |
| 12 | * | |
| 13 | * Revision History | |
| 14 | * ---------------- | |
| 15 | * 28 Aug 96 Doug Mitchell at NeXT | |
| 16 | * Created. | |
| 17 | */ | |
| 18 | ||
| 19 | #ifndef _CK_FEEFEEDEXP_H_ | |
| 20 | #define _CK_FEEFEEDEXP_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 *feeFEEDExp; | |
| 42 | ||
| 43 | /* | |
| 44 | * Alloc and init a feeFEEDExp object associated with specified feePubKey. | |
| 45 | */ | |
| 46 | feeFEEDExp feeFEEDExpNewWithPubKey( | |
| 47 | feePubKey pubKey, | |
| 48 | feeRandFcn randFcn, // optional | |
| 49 | void *randRef); | |
| 50 | ||
| 51 | void feeFEEDExpFree(feeFEEDExp feed); | |
| 52 | ||
| 53 | /* | |
| 54 | * Plaintext block size. | |
| 55 | */ | |
| 56 | unsigned feeFEEDExpPlainBlockSize(feeFEEDExp feed); | |
| 57 | ||
| 58 | /* | |
| 59 | * Ciphertext block size used for decryption. | |
| 60 | */ | |
| 61 | unsigned feeFEEDExpCipherBlockSize(feeFEEDExp feed); | |
| 62 | ||
| 63 | /* | |
| 64 | * Required size of buffer for ciphertext, upon encrypting one | |
| 65 | * block of plaintext. | |
| 66 | */ | |
| 67 | unsigned feeFEEDExpCipherBufSize(feeFEEDExp feed); | |
| 68 | ||
| 69 | /* | |
| 70 | * Return the size of ciphertext to hold specified size of encrypted plaintext. | |
| 71 | */ | |
| 72 | unsigned feeFEEDExpCipherTextSize(feeFEEDExp feed, unsigned plainTextSize); | |
| 73 | ||
| 74 | /* | |
| 75 | * Return the size of plaintext to hold specified size of decrypted ciphertext. | |
| 76 | */ | |
| 77 | unsigned feeFEEDExpPlainTextSize(feeFEEDExp feed, unsigned cipherTextSize); | |
| 78 | ||
| 79 | /* | |
| 80 | * Encrypt a block or less of data. Caller malloc's cipherText. Generates | |
| 81 | * feeFEEDExpCipherBlockSize() bytes of cipherText if finalBlock is false; | |
| 82 | * if finalBlock is true it could produce twice as much ciphertext. | |
| 83 | * If plainTextLen is less than feeFEEDExpPlainBlockSize(), finalBlock must be true. | |
| 84 | */ | |
| 85 | feeReturn feeFEEDExpEncryptBlock(feeFEEDExp feed, | |
| 86 | const unsigned char *plainText, | |
| 87 | unsigned plainTextLen, | |
| 88 | unsigned char *cipherText, | |
| 89 | unsigned *cipherTextLen, // RETURNED | |
| 90 | int finalBlock); | |
| 91 | ||
| 92 | /* | |
| 93 | * Decrypt (exactly) a block of data. Caller malloc's plainText. Always | |
| 94 | * generates feeFEEDExpBlockSize bytes of plainText, unless 'finalBlock' is | |
| 95 | * non-zero (in which case feeFEEDExpBlockSize or less bytes of plainText are | |
| 96 | * generated). | |
| 97 | */ | |
| 98 | feeReturn feeFEEDExpDecryptBlock(feeFEEDExp feed, | |
| 99 | const unsigned char *cipherText, | |
| 100 | unsigned cipherTextLen, | |
| 101 | unsigned char *plainText, | |
| 102 | unsigned *plainTextLen, // RETURNED | |
| 103 | int finalBlock); | |
| 104 | ||
| 105 | /* | |
| 106 | * Convenience routines to encrypt & decrypt multi-block data. | |
| 107 | */ | |
| 108 | feeReturn feeFEEDExpEncrypt(feeFEEDExp feed, | |
| 109 | const unsigned char *plainText, | |
| 110 | unsigned plainTextLen, | |
| 111 | unsigned char **cipherText, // malloc'd and RETURNED | |
| 112 | unsigned *cipherTextLen); // RETURNED | |
| 113 | ||
| 114 | feeReturn feeFEEDExpDecrypt(feeFEEDExp feed, | |
| 115 | const unsigned char *cipherText, | |
| 116 | unsigned cipherTextLen, | |
| 117 | unsigned char **plainText, // malloc'd and RETURNED | |
| 118 | unsigned *plainTextLen); // RETURNED | |
| 119 | ||
| 120 | #ifdef __cplusplus | |
| 121 | } | |
| 122 | #endif | |
| 123 | ||
| 124 | #endif /* CRYPTKIT_ASYMMETRIC_ENABLE */ | |
| 125 | ||
| 126 | #endif /*_CK_FEEFEEDEXP_H_*/ |