diff options
Diffstat (limited to 'arch/s390/crypto/des_check_key.c')
| -rw-r--r-- | arch/s390/crypto/des_check_key.c | 132 |
1 files changed, 0 insertions, 132 deletions
diff --git a/arch/s390/crypto/des_check_key.c b/arch/s390/crypto/des_check_key.c deleted file mode 100644 index 5706af266442..000000000000 --- a/arch/s390/crypto/des_check_key.c +++ /dev/null | |||
| @@ -1,132 +0,0 @@ | |||
| 1 | /* | ||
| 2 | * Cryptographic API. | ||
| 3 | * | ||
| 4 | * Function for checking keys for the DES and Tripple DES Encryption | ||
| 5 | * algorithms. | ||
| 6 | * | ||
| 7 | * Originally released as descore by Dana L. How <how@isl.stanford.edu>. | ||
| 8 | * Modified by Raimar Falke <rf13@inf.tu-dresden.de> for the Linux-Kernel. | ||
| 9 | * Derived from Cryptoapi and Nettle implementations, adapted for in-place | ||
| 10 | * scatterlist interface. Changed LGPL to GPL per section 3 of the LGPL. | ||
| 11 | * | ||
| 12 | * s390 Version: | ||
| 13 | * Copyright IBM Corp. 2003 | ||
| 14 | * Author(s): Thomas Spatzier | ||
| 15 | * Jan Glauber (jan.glauber@de.ibm.com) | ||
| 16 | * | ||
| 17 | * Derived from "crypto/des.c" | ||
| 18 | * Copyright (c) 1992 Dana L. How. | ||
| 19 | * Copyright (c) Raimar Falke <rf13@inf.tu-dresden.de> | ||
| 20 | * Copyright (c) Gisle Sflensminde <gisle@ii.uib.no> | ||
| 21 | * Copyright (C) 2001 Niels Mvller. | ||
| 22 | * Copyright (c) 2002 James Morris <jmorris@intercode.com.au> | ||
| 23 | * | ||
| 24 | * This program is free software; you can redistribute it and/or modify | ||
| 25 | * it under the terms of the GNU General Public License as published by | ||
| 26 | * the Free Software Foundation; either version 2 of the License, or | ||
| 27 | * (at your option) any later version. | ||
| 28 | * | ||
| 29 | */ | ||
| 30 | #include <linux/init.h> | ||
| 31 | #include <linux/module.h> | ||
| 32 | #include <linux/errno.h> | ||
| 33 | #include <linux/crypto.h> | ||
| 34 | #include "crypto_des.h" | ||
| 35 | |||
| 36 | #define ROR(d,c,o) ((d) = (d) >> (c) | (d) << (o)) | ||
| 37 | |||
| 38 | static const u8 parity[] = { | ||
| 39 | 8,1,0,8,0,8,8,0,0,8,8,0,8,0,2,8,0,8,8,0,8,0,0,8,8,0,0,8,0,8,8,3, | ||
| 40 | 0,8,8,0,8,0,0,8,8,0,0,8,0,8,8,0,8,0,0,8,0,8,8,0,0,8,8,0,8,0,0,8, | ||
| 41 | 0,8,8,0,8,0,0,8,8,0,0,8,0,8,8,0,8,0,0,8,0,8,8,0,0,8,8,0,8,0,0,8, | ||
| 42 | 8,0,0,8,0,8,8,0,0,8,8,0,8,0,0,8,0,8,8,0,8,0,0,8,8,0,0,8,0,8,8,0, | ||
| 43 | 0,8,8,0,8,0,0,8,8,0,0,8,0,8,8,0,8,0,0,8,0,8,8,0,0,8,8,0,8,0,0,8, | ||
| 44 | 8,0,0,8,0,8,8,0,0,8,8,0,8,0,0,8,0,8,8,0,8,0,0,8,8,0,0,8,0,8,8,0, | ||
| 45 | 8,0,0,8,0,8,8,0,0,8,8,0,8,0,0,8,0,8,8,0,8,0,0,8,8,0,0,8,0,8,8,0, | ||
| 46 | 4,8,8,0,8,0,0,8,8,0,0,8,0,8,8,0,8,5,0,8,0,8,8,0,0,8,8,0,8,0,6,8, | ||
| 47 | }; | ||
| 48 | |||
| 49 | /* | ||
| 50 | * RFC2451: Weak key checks SHOULD be performed. | ||
| 51 | */ | ||
| 52 | int | ||
| 53 | crypto_des_check_key(const u8 *key, unsigned int keylen, u32 *flags) | ||
| 54 | { | ||
| 55 | u32 n, w; | ||
| 56 | |||
| 57 | n = parity[key[0]]; n <<= 4; | ||
| 58 | n |= parity[key[1]]; n <<= 4; | ||
| 59 | n |= parity[key[2]]; n <<= 4; | ||
| 60 | n |= parity[key[3]]; n <<= 4; | ||
| 61 | n |= parity[key[4]]; n <<= 4; | ||
| 62 | n |= parity[key[5]]; n <<= 4; | ||
| 63 | n |= parity[key[6]]; n <<= 4; | ||
| 64 | n |= parity[key[7]]; | ||
| 65 | w = 0x88888888L; | ||
| 66 | |||
| 67 | if ((*flags & CRYPTO_TFM_REQ_WEAK_KEY) | ||
| 68 | && !((n - (w >> 3)) & w)) { /* 1 in 10^10 keys passes this test */ | ||
| 69 | if (n < 0x41415151) { | ||
| 70 | if (n < 0x31312121) { | ||
| 71 | if (n < 0x14141515) { | ||
| 72 | /* 01 01 01 01 01 01 01 01 */ | ||
| 73 | if (n == 0x11111111) goto weak; | ||
| 74 | /* 01 1F 01 1F 01 0E 01 0E */ | ||
| 75 | if (n == 0x13131212) goto weak; | ||
| 76 | } else { | ||
| 77 | /* 01 E0 01 E0 01 F1 01 F1 */ | ||
| 78 | if (n == 0x14141515) goto weak; | ||
| 79 | /* 01 FE 01 FE 01 FE 01 FE */ | ||
| 80 | if (n == 0x16161616) goto weak; | ||
| 81 | } | ||
| 82 | } else { | ||
| 83 | if (n < 0x34342525) { | ||
| 84 | /* 1F 01 1F 01 0E 01 0E 01 */ | ||
| 85 | if (n == 0x31312121) goto weak; | ||
| 86 | /* 1F 1F 1F 1F 0E 0E 0E 0E (?) */ | ||
| 87 | if (n == 0x33332222) goto weak; | ||
| 88 | } else { | ||
| 89 | /* 1F E0 1F E0 0E F1 0E F1 */ | ||
| 90 | if (n == 0x34342525) goto weak; | ||
| 91 | /* 1F FE 1F FE 0E FE 0E FE */ | ||
| 92 | if (n == 0x36362626) goto weak; | ||
| 93 | } | ||
| 94 | } | ||
| 95 | } else { | ||
| 96 | if (n < 0x61616161) { | ||
| 97 | if (n < 0x44445555) { | ||
| 98 | /* E0 01 E0 01 F1 01 F1 01 */ | ||
| 99 | if (n == 0x41415151) goto weak; | ||
| 100 | /* E0 1F E0 1F F1 0E F1 0E */ | ||
| 101 | if (n == 0x43435252) goto weak; | ||
| 102 | } else { | ||
| 103 | /* E0 E0 E0 E0 F1 F1 F1 F1 (?) */ | ||
| 104 | if (n == 0x44445555) goto weak; | ||
| 105 | /* E0 FE E0 FE F1 FE F1 FE */ | ||
| 106 | if (n == 0x46465656) goto weak; | ||
| 107 | } | ||
| 108 | } else { | ||
| 109 | if (n < 0x64646565) { | ||
| 110 | /* FE 01 FE 01 FE 01 FE 01 */ | ||
| 111 | if (n == 0x61616161) goto weak; | ||
| 112 | /* FE 1F FE 1F FE 0E FE 0E */ | ||
| 113 | if (n == 0x63636262) goto weak; | ||
| 114 | } else { | ||
| 115 | /* FE E0 FE E0 FE F1 FE F1 */ | ||
| 116 | if (n == 0x64646565) goto weak; | ||
| 117 | /* FE FE FE FE FE FE FE FE */ | ||
| 118 | if (n == 0x66666666) goto weak; | ||
| 119 | } | ||
| 120 | } | ||
| 121 | } | ||
| 122 | } | ||
| 123 | return 0; | ||
| 124 | weak: | ||
| 125 | *flags |= CRYPTO_TFM_RES_WEAK_KEY; | ||
| 126 | return -EINVAL; | ||
| 127 | } | ||
| 128 | |||
| 129 | EXPORT_SYMBOL(crypto_des_check_key); | ||
| 130 | |||
| 131 | MODULE_LICENSE("GPL"); | ||
| 132 | MODULE_DESCRIPTION("Key Check function for DES & DES3 Cipher Algorithms"); | ||