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|
/*
* Methods for "Blowfish" cipher algorithm
* (Based on Bruce Schneier's implementation at http://www.schneier.com,
* subsequently edited by RW Penney for "cryptmount")
*/
/*
This file is part of cryptmount
*/
#include <inttypes.h>
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include "blowfish.h"
#ifdef TESTING
# include "cmtesting.h"
#endif
enum {
CM_BF_nrounds = 16,
CM_BF_keybytes = 8,
CM_BF_maxkeybytes = 56
};
static const uint32_t bf_p[18] = {
0x243f6a88U , 0x85a308d3U , 0x13198a2eU ,
0x03707344U , 0xa4093822U , 0x299f31d0U ,
0x082efa98U , 0xec4e6c89U , 0x452821e6U ,
0x38d01377U , 0xbe5466cfU , 0x34e90c6cU ,
0xc0ac29b7U , 0xc97c50ddU , 0x3f84d5b5U ,
0xb5470917U , 0x9216d5d9U , 0x8979fb1bU
};
static const uint32_t bf_sbox[4][256] = {
{ 0xd1310ba6U , 0x98dfb5acU , 0x2ffd72dbU , 0xd01adfb7U ,
0xb8e1afedU , 0x6a267e96U , 0xba7c9045U , 0xf12c7f99U ,
0x24a19947U , 0xb3916cf7U , 0x0801f2e2U , 0x858efc16U ,
0x636920d8U , 0x71574e69U , 0xa458fea3U , 0xf4933d7eU ,
0x0d95748fU , 0x728eb658U , 0x718bcd58U , 0x82154aeeU ,
0x7b54a41dU , 0xc25a59b5U , 0x9c30d539U , 0x2af26013U ,
0xc5d1b023U , 0x286085f0U , 0xca417918U , 0xb8db38efU ,
0x8e79dcb0U , 0x603a180eU , 0x6c9e0e8bU , 0xb01e8a3eU ,
0xd71577c1U , 0xbd314b27U , 0x78af2fdaU , 0x55605c60U ,
0xe65525f3U , 0xaa55ab94U , 0x57489862U , 0x63e81440U ,
0x55ca396aU , 0x2aab10b6U , 0xb4cc5c34U , 0x1141e8ceU ,
0xa15486afU , 0x7c72e993U , 0xb3ee1411U , 0x636fbc2aU ,
0x2ba9c55dU , 0x741831f6U , 0xce5c3e16U , 0x9b87931eU ,
0xafd6ba33U , 0x6c24cf5cU , 0x7a325381U , 0x28958677U ,
0x3b8f4898U , 0x6b4bb9afU , 0xc4bfe81bU , 0x66282193U ,
0x61d809ccU , 0xfb21a991U , 0x487cac60U , 0x5dec8032U ,
0xef845d5dU , 0xe98575b1U , 0xdc262302U , 0xeb651b88U ,
0x23893e81U , 0xd396acc5U , 0x0f6d6ff3U , 0x83f44239U ,
0x2e0b4482U , 0xa4842004U , 0x69c8f04aU , 0x9e1f9b5eU ,
0x21c66842U , 0xf6e96c9aU , 0x670c9c61U , 0xabd388f0U ,
0x6a51a0d2U , 0xd8542f68U , 0x960fa728U , 0xab5133a3U ,
0x6eef0b6cU , 0x137a3be4U , 0xba3bf050U , 0x7efb2a98U ,
0xa1f1651dU , 0x39af0176U , 0x66ca593eU , 0x82430e88U ,
0x8cee8619U , 0x456f9fb4U , 0x7d84a5c3U , 0x3b8b5ebeU ,
0xe06f75d8U , 0x85c12073U , 0x401a449fU , 0x56c16aa6U ,
0x4ed3aa62U , 0x363f7706U , 0x1bfedf72U , 0x429b023dU ,
0x37d0d724U , 0xd00a1248U , 0xdb0fead3U , 0x49f1c09bU ,
0x075372c9U , 0x80991b7bU , 0x25d479d8U , 0xf6e8def7U ,
0xe3fe501aU , 0xb6794c3bU , 0x976ce0bdU , 0x04c006baU ,
0xc1a94fb6U , 0x409f60c4U , 0x5e5c9ec2U , 0x196a2463U ,
0x68fb6fafU , 0x3e6c53b5U , 0x1339b2ebU , 0x3b52ec6fU ,
0x6dfc511fU , 0x9b30952cU , 0xcc814544U , 0xaf5ebd09U ,
0xbee3d004U , 0xde334afdU , 0x660f2807U , 0x192e4bb3U ,
0xc0cba857U , 0x45c8740fU , 0xd20b5f39U , 0xb9d3fbdbU ,
0x5579c0bdU , 0x1a60320aU , 0xd6a100c6U , 0x402c7279U ,
0x679f25feU , 0xfb1fa3ccU , 0x8ea5e9f8U , 0xdb3222f8U ,
0x3c7516dfU , 0xfd616b15U , 0x2f501ec8U , 0xad0552abU ,
0x323db5faU , 0xfd238760U , 0x53317b48U , 0x3e00df82U ,
0x9e5c57bbU , 0xca6f8ca0U , 0x1a87562eU , 0xdf1769dbU ,
0xd542a8f6U , 0x287effc3U , 0xac6732c6U , 0x8c4f5573U ,
0x695b27b0U , 0xbbca58c8U , 0xe1ffa35dU , 0xb8f011a0U ,
0x10fa3d98U , 0xfd2183b8U , 0x4afcb56cU , 0x2dd1d35bU ,
0x9a53e479U , 0xb6f84565U , 0xd28e49bcU , 0x4bfb9790U ,
0xe1ddf2daU , 0xa4cb7e33U , 0x62fb1341U , 0xcee4c6e8U ,
0xef20cadaU , 0x36774c01U , 0xd07e9efeU , 0x2bf11fb4U ,
0x95dbda4dU , 0xae909198U , 0xeaad8e71U , 0x6b93d5a0U ,
0xd08ed1d0U , 0xafc725e0U , 0x8e3c5b2fU , 0x8e7594b7U ,
0x8ff6e2fbU , 0xf2122b64U , 0x8888b812U , 0x900df01cU ,
0x4fad5ea0U , 0x688fc31cU , 0xd1cff191U , 0xb3a8c1adU ,
0x2f2f2218U , 0xbe0e1777U , 0xea752dfeU , 0x8b021fa1U ,
0xe5a0cc0fU , 0xb56f74e8U , 0x18acf3d6U , 0xce89e299U ,
0xb4a84fe0U , 0xfd13e0b7U , 0x7cc43b81U , 0xd2ada8d9U ,
0x165fa266U , 0x80957705U , 0x93cc7314U , 0x211a1477U ,
0xe6ad2065U , 0x77b5fa86U , 0xc75442f5U , 0xfb9d35cfU ,
0xebcdaf0cU , 0x7b3e89a0U , 0xd6411bd3U , 0xae1e7e49U ,
0x00250e2dU , 0x2071b35eU , 0x226800bbU , 0x57b8e0afU ,
0x2464369bU , 0xf009b91eU , 0x5563911dU , 0x59dfa6aaU ,
0x78c14389U , 0xd95a537fU , 0x207d5ba2U , 0x02e5b9c5U ,
0x83260376U , 0x6295cfa9U , 0x11c81968U , 0x4e734a41U ,
0xb3472dcaU , 0x7b14a94aU , 0x1b510052U , 0x9a532915U ,
0xd60f573fU , 0xbc9bc6e4U , 0x2b60a476U , 0x81e67400U ,
0x08ba6fb5U , 0x571be91fU , 0xf296ec6bU , 0x2a0dd915U ,
0xb6636521U , 0xe7b9f9b6U , 0xff34052eU , 0xc5855664U ,
0x53b02d5dU , 0xa99f8fa1U , 0x08ba4799U , 0x6e85076aU } ,
{ 0x4b7a70e9U , 0xb5b32944U , 0xdb75092eU , 0xc4192623U ,
0xad6ea6b0U , 0x49a7df7dU , 0x9cee60b8U , 0x8fedb266U ,
0xecaa8c71U , 0x699a17ffU , 0x5664526cU , 0xc2b19ee1U ,
0x193602a5U , 0x75094c29U , 0xa0591340U , 0xe4183a3eU ,
0x3f54989aU , 0x5b429d65U , 0x6b8fe4d6U , 0x99f73fd6U ,
0xa1d29c07U , 0xefe830f5U , 0x4d2d38e6U , 0xf0255dc1U ,
0x4cdd2086U , 0x8470eb26U , 0x6382e9c6U , 0x021ecc5eU ,
0x09686b3fU , 0x3ebaefc9U , 0x3c971814U , 0x6b6a70a1U ,
0x687f3584U , 0x52a0e286U , 0xb79c5305U , 0xaa500737U ,
0x3e07841cU , 0x7fdeae5cU , 0x8e7d44ecU , 0x5716f2b8U ,
0xb03ada37U , 0xf0500c0dU , 0xf01c1f04U , 0x0200b3ffU ,
0xae0cf51aU , 0x3cb574b2U , 0x25837a58U , 0xdc0921bdU ,
0xd19113f9U , 0x7ca92ff6U , 0x94324773U , 0x22f54701U ,
0x3ae5e581U , 0x37c2dadcU , 0xc8b57634U , 0x9af3dda7U ,
0xa9446146U , 0x0fd0030eU , 0xecc8c73eU , 0xa4751e41U ,
0xe238cd99U , 0x3bea0e2fU , 0x3280bba1U , 0x183eb331U ,
0x4e548b38U , 0x4f6db908U , 0x6f420d03U , 0xf60a04bfU ,
0x2cb81290U , 0x24977c79U , 0x5679b072U , 0xbcaf89afU ,
0xde9a771fU , 0xd9930810U , 0xb38bae12U , 0xdccf3f2eU ,
0x5512721fU , 0x2e6b7124U , 0x501adde6U , 0x9f84cd87U ,
0x7a584718U , 0x7408da17U , 0xbc9f9abcU , 0xe94b7d8cU ,
0xec7aec3aU , 0xdb851dfaU , 0x63094366U , 0xc464c3d2U ,
0xef1c1847U , 0x3215d908U , 0xdd433b37U , 0x24c2ba16U ,
0x12a14d43U , 0x2a65c451U , 0x50940002U , 0x133ae4ddU ,
0x71dff89eU , 0x10314e55U , 0x81ac77d6U , 0x5f11199bU ,
0x043556f1U , 0xd7a3c76bU , 0x3c11183bU , 0x5924a509U ,
0xf28fe6edU , 0x97f1fbfaU , 0x9ebabf2cU , 0x1e153c6eU ,
0x86e34570U , 0xeae96fb1U , 0x860e5e0aU , 0x5a3e2ab3U ,
0x771fe71cU , 0x4e3d06faU , 0x2965dcb9U , 0x99e71d0fU ,
0x803e89d6U , 0x5266c825U , 0x2e4cc978U , 0x9c10b36aU ,
0xc6150ebaU , 0x94e2ea78U , 0xa5fc3c53U , 0x1e0a2df4U ,
0xf2f74ea7U , 0x361d2b3dU , 0x1939260fU , 0x19c27960U ,
0x5223a708U , 0xf71312b6U , 0xebadfe6eU , 0xeac31f66U ,
0xe3bc4595U , 0xa67bc883U , 0xb17f37d1U , 0x018cff28U ,
0xc332ddefU , 0xbe6c5aa5U , 0x65582185U , 0x68ab9802U ,
0xeecea50fU , 0xdb2f953bU , 0x2aef7dadU , 0x5b6e2f84U ,
0x1521b628U , 0x29076170U , 0xecdd4775U , 0x619f1510U ,
0x13cca830U , 0xeb61bd96U , 0x0334fe1eU , 0xaa0363cfU ,
0xb5735c90U , 0x4c70a239U , 0xd59e9e0bU , 0xcbaade14U ,
0xeecc86bcU , 0x60622ca7U , 0x9cab5cabU , 0xb2f3846eU ,
0x648b1eafU , 0x19bdf0caU , 0xa02369b9U , 0x655abb50U ,
0x40685a32U , 0x3c2ab4b3U , 0x319ee9d5U , 0xc021b8f7U ,
0x9b540b19U , 0x875fa099U , 0x95f7997eU , 0x623d7da8U ,
0xf837889aU , 0x97e32d77U , 0x11ed935fU , 0x16681281U ,
0x0e358829U , 0xc7e61fd6U , 0x96dedfa1U , 0x7858ba99U ,
0x57f584a5U , 0x1b227263U , 0x9b83c3ffU , 0x1ac24696U ,
0xcdb30aebU , 0x532e3054U , 0x8fd948e4U , 0x6dbc3128U ,
0x58ebf2efU , 0x34c6ffeaU , 0xfe28ed61U , 0xee7c3c73U ,
0x5d4a14d9U , 0xe864b7e3U , 0x42105d14U , 0x203e13e0U ,
0x45eee2b6U , 0xa3aaabeaU , 0xdb6c4f15U , 0xfacb4fd0U ,
0xc742f442U , 0xef6abbb5U , 0x654f3b1dU , 0x41cd2105U ,
0xd81e799eU , 0x86854dc7U , 0xe44b476aU , 0x3d816250U ,
0xcf62a1f2U , 0x5b8d2646U , 0xfc8883a0U , 0xc1c7b6a3U ,
0x7f1524c3U , 0x69cb7492U , 0x47848a0bU , 0x5692b285U ,
0x095bbf00U , 0xad19489dU , 0x1462b174U , 0x23820e00U ,
0x58428d2aU , 0x0c55f5eaU , 0x1dadf43eU , 0x233f7061U ,
0x3372f092U , 0x8d937e41U , 0xd65fecf1U , 0x6c223bdbU ,
0x7cde3759U , 0xcbee7460U , 0x4085f2a7U , 0xce77326eU ,
0xa6078084U , 0x19f8509eU , 0xe8efd855U , 0x61d99735U ,
0xa969a7aaU , 0xc50c06c2U , 0x5a04abfcU , 0x800bcadcU ,
0x9e447a2eU , 0xc3453484U , 0xfdd56705U , 0x0e1e9ec9U ,
0xdb73dbd3U , 0x105588cdU , 0x675fda79U , 0xe3674340U ,
0xc5c43465U , 0x713e38d8U , 0x3d28f89eU , 0xf16dff20U ,
0x153e21e7U , 0x8fb03d4aU , 0xe6e39f2bU , 0xdb83adf7U } ,
{ 0xe93d5a68U , 0x948140f7U , 0xf64c261cU , 0x94692934U ,
0x411520f7U , 0x7602d4f7U , 0xbcf46b2eU , 0xd4a20068U ,
0xd4082471U , 0x3320f46aU , 0x43b7d4b7U , 0x500061afU ,
0x1e39f62eU , 0x97244546U , 0x14214f74U , 0xbf8b8840U ,
0x4d95fc1dU , 0x96b591afU , 0x70f4ddd3U , 0x66a02f45U ,
0xbfbc09ecU , 0x03bd9785U , 0x7fac6dd0U , 0x31cb8504U ,
0x96eb27b3U , 0x55fd3941U , 0xda2547e6U , 0xabca0a9aU ,
0x28507825U , 0x530429f4U , 0x0a2c86daU , 0xe9b66dfbU ,
0x68dc1462U , 0xd7486900U , 0x680ec0a4U , 0x27a18deeU ,
0x4f3ffea2U , 0xe887ad8cU , 0xb58ce006U , 0x7af4d6b6U ,
0xaace1e7cU , 0xd3375fecU , 0xce78a399U , 0x406b2a42U ,
0x20fe9e35U , 0xd9f385b9U , 0xee39d7abU , 0x3b124e8bU ,
0x1dc9faf7U , 0x4b6d1856U , 0x26a36631U , 0xeae397b2U ,
0x3a6efa74U , 0xdd5b4332U , 0x6841e7f7U , 0xca7820fbU ,
0xfb0af54eU , 0xd8feb397U , 0x454056acU , 0xba489527U ,
0x55533a3aU , 0x20838d87U , 0xfe6ba9b7U , 0xd096954bU ,
0x55a867bcU , 0xa1159a58U , 0xcca92963U , 0x99e1db33U ,
0xa62a4a56U , 0x3f3125f9U , 0x5ef47e1cU , 0x9029317cU ,
0xfdf8e802U , 0x04272f70U , 0x80bb155cU , 0x05282ce3U ,
0x95c11548U , 0xe4c66d22U , 0x48c1133fU , 0xc70f86dcU ,
0x07f9c9eeU , 0x41041f0fU , 0x404779a4U , 0x5d886e17U ,
0x325f51ebU , 0xd59bc0d1U , 0xf2bcc18fU , 0x41113564U ,
0x257b7834U , 0x602a9c60U , 0xdff8e8a3U , 0x1f636c1bU ,
0x0e12b4c2U , 0x02e1329eU , 0xaf664fd1U , 0xcad18115U ,
0x6b2395e0U , 0x333e92e1U , 0x3b240b62U , 0xeebeb922U ,
0x85b2a20eU , 0xe6ba0d99U , 0xde720c8cU , 0x2da2f728U ,
0xd0127845U , 0x95b794fdU , 0x647d0862U , 0xe7ccf5f0U ,
0x5449a36fU , 0x877d48faU , 0xc39dfd27U , 0xf33e8d1eU ,
0x0a476341U , 0x992eff74U , 0x3a6f6eabU , 0xf4f8fd37U ,
0xa812dc60U , 0xa1ebddf8U , 0x991be14cU , 0xdb6e6b0dU ,
0xc67b5510U , 0x6d672c37U , 0x2765d43bU , 0xdcd0e804U ,
0xf1290dc7U , 0xcc00ffa3U , 0xb5390f92U , 0x690fed0bU ,
0x667b9ffbU , 0xcedb7d9cU , 0xa091cf0bU , 0xd9155ea3U ,
0xbb132f88U , 0x515bad24U , 0x7b9479bfU , 0x763bd6ebU ,
0x37392eb3U , 0xcc115979U , 0x8026e297U , 0xf42e312dU ,
0x6842ada7U , 0xc66a2b3bU , 0x12754cccU , 0x782ef11cU ,
0x6a124237U , 0xb79251e7U , 0x06a1bbe6U , 0x4bfb6350U ,
0x1a6b1018U , 0x11caedfaU , 0x3d25bdd8U , 0xe2e1c3c9U ,
0x44421659U , 0x0a121386U , 0xd90cec6eU , 0xd5abea2aU ,
0x64af674eU , 0xda86a85fU , 0xbebfe988U , 0x64e4c3feU ,
0x9dbc8057U , 0xf0f7c086U , 0x60787bf8U , 0x6003604dU ,
0xd1fd8346U , 0xf6381fb0U , 0x7745ae04U , 0xd736fcccU ,
0x83426b33U , 0xf01eab71U , 0xb0804187U , 0x3c005e5fU ,
0x77a057beU , 0xbde8ae24U , 0x55464299U , 0xbf582e61U ,
0x4e58f48fU , 0xf2ddfda2U , 0xf474ef38U , 0x8789bdc2U ,
0x5366f9c3U , 0xc8b38e74U , 0xb475f255U , 0x46fcd9b9U ,
0x7aeb2661U , 0x8b1ddf84U , 0x846a0e79U , 0x915f95e2U ,
0x466e598eU , 0x20b45770U , 0x8cd55591U , 0xc902de4cU ,
0xb90bace1U , 0xbb8205d0U , 0x11a86248U , 0x7574a99eU ,
0xb77f19b6U , 0xe0a9dc09U , 0x662d09a1U , 0xc4324633U ,
0xe85a1f02U , 0x09f0be8cU , 0x4a99a025U , 0x1d6efe10U ,
0x1ab93d1dU , 0x0ba5a4dfU , 0xa186f20fU , 0x2868f169U ,
0xdcb7da83U , 0x573906feU , 0xa1e2ce9bU , 0x4fcd7f52U ,
0x50115e01U , 0xa70683faU , 0xa002b5c4U , 0x0de6d027U ,
0x9af88c27U , 0x773f8641U , 0xc3604c06U , 0x61a806b5U ,
0xf0177a28U , 0xc0f586e0U , 0x006058aaU , 0x30dc7d62U ,
0x11e69ed7U , 0x2338ea63U , 0x53c2dd94U , 0xc2c21634U ,
0xbbcbee56U , 0x90bcb6deU , 0xebfc7da1U , 0xce591d76U ,
0x6f05e409U , 0x4b7c0188U , 0x39720a3dU , 0x7c927c24U ,
0x86e3725fU , 0x724d9db9U , 0x1ac15bb4U , 0xd39eb8fcU ,
0xed545578U , 0x08fca5b5U , 0xd83d7cd3U , 0x4dad0fc4U ,
0x1e50ef5eU , 0xb161e6f8U , 0xa28514d9U , 0x6c51133cU ,
0x6fd5c7e7U , 0x56e14ec4U , 0x362abfceU , 0xddc6c837U ,
0xd79a3234U , 0x92638212U , 0x670efa8eU , 0x406000e0U } ,
{ 0x3a39ce37U , 0xd3faf5cfU , 0xabc27737U , 0x5ac52d1bU ,
0x5cb0679eU , 0x4fa33742U , 0xd3822740U , 0x99bc9bbeU ,
0xd5118e9dU , 0xbf0f7315U , 0xd62d1c7eU , 0xc700c47bU ,
0xb78c1b6bU , 0x21a19045U , 0xb26eb1beU , 0x6a366eb4U ,
0x5748ab2fU , 0xbc946e79U , 0xc6a376d2U , 0x6549c2c8U ,
0x530ff8eeU , 0x468dde7dU , 0xd5730a1dU , 0x4cd04dc6U ,
0x2939bbdbU , 0xa9ba4650U , 0xac9526e8U , 0xbe5ee304U ,
0xa1fad5f0U , 0x6a2d519aU , 0x63ef8ce2U , 0x9a86ee22U ,
0xc089c2b8U , 0x43242ef6U , 0xa51e03aaU , 0x9cf2d0a4U ,
0x83c061baU , 0x9be96a4dU , 0x8fe51550U , 0xba645bd6U ,
0x2826a2f9U , 0xa73a3ae1U , 0x4ba99586U , 0xef5562e9U ,
0xc72fefd3U , 0xf752f7daU , 0x3f046f69U , 0x77fa0a59U ,
0x80e4a915U , 0x87b08601U , 0x9b09e6adU , 0x3b3ee593U ,
0xe990fd5aU , 0x9e34d797U , 0x2cf0b7d9U , 0x022b8b51U ,
0x96d5ac3aU , 0x017da67dU , 0xd1cf3ed6U , 0x7c7d2d28U ,
0x1f9f25cfU , 0xadf2b89bU , 0x5ad6b472U , 0x5a88f54cU ,
0xe029ac71U , 0xe019a5e6U , 0x47b0acfdU , 0xed93fa9bU ,
0xe8d3c48dU , 0x283b57ccU , 0xf8d56629U , 0x79132e28U ,
0x785f0191U , 0xed756055U , 0xf7960e44U , 0xe3d35e8cU ,
0x15056dd4U , 0x88f46dbaU , 0x03a16125U , 0x0564f0bdU ,
0xc3eb9e15U , 0x3c9057a2U , 0x97271aecU , 0xa93a072aU ,
0x1b3f6d9bU , 0x1e6321f5U , 0xf59c66fbU , 0x26dcf319U ,
0x7533d928U , 0xb155fdf5U , 0x03563482U , 0x8aba3cbbU ,
0x28517711U , 0xc20ad9f8U , 0xabcc5167U , 0xccad925fU ,
0x4de81751U , 0x3830dc8eU , 0x379d5862U , 0x9320f991U ,
0xea7a90c2U , 0xfb3e7bceU , 0x5121ce64U , 0x774fbe32U ,
0xa8b6e37eU , 0xc3293d46U , 0x48de5369U , 0x6413e680U ,
0xa2ae0810U , 0xdd6db224U , 0x69852dfdU , 0x09072166U ,
0xb39a460aU , 0x6445c0ddU , 0x586cdecfU , 0x1c20c8aeU ,
0x5bbef7ddU , 0x1b588d40U , 0xccd2017fU , 0x6bb4e3bbU ,
0xdda26a7eU , 0x3a59ff45U , 0x3e350a44U , 0xbcb4cdd5U ,
0x72eacea8U , 0xfa6484bbU , 0x8d6612aeU , 0xbf3c6f47U ,
0xd29be463U , 0x542f5d9eU , 0xaec2771bU , 0xf64e6370U ,
0x740e0d8dU , 0xe75b1357U , 0xf8721671U , 0xaf537d5dU ,
0x4040cb08U , 0x4eb4e2ccU , 0x34d2466aU , 0x0115af84U ,
0xe1b00428U , 0x95983a1dU , 0x06b89fb4U , 0xce6ea048U ,
0x6f3f3b82U , 0x3520ab82U , 0x011a1d4bU , 0x277227f8U ,
0x611560b1U , 0xe7933fdcU , 0xbb3a792bU , 0x344525bdU ,
0xa08839e1U , 0x51ce794bU , 0x2f32c9b7U , 0xa01fbac9U ,
0xe01cc87eU , 0xbcc7d1f6U , 0xcf0111c3U , 0xa1e8aac7U ,
0x1a908749U , 0xd44fbd9aU , 0xd0dadecbU , 0xd50ada38U ,
0x0339c32aU , 0xc6913667U , 0x8df9317cU , 0xe0b12b4fU ,
0xf79e59b7U , 0x43f5bb3aU , 0xf2d519ffU , 0x27d9459cU ,
0xbf97222cU , 0x15e6fc2aU , 0x0f91fc71U , 0x9b941525U ,
0xfae59361U , 0xceb69cebU , 0xc2a86459U , 0x12baa8d1U ,
0xb6c1075eU , 0xe3056a0cU , 0x10d25065U , 0xcb03a442U ,
0xe0ec6e0eU , 0x1698db3bU , 0x4c98a0beU , 0x3278e964U ,
0x9f1f9532U , 0xe0d392dfU , 0xd3a0342bU , 0x8971f21eU ,
0x1b0a7441U , 0x4ba3348cU , 0xc5be7120U , 0xc37632d8U ,
0xdf359f8dU , 0x9b992f2eU , 0xe60b6f47U , 0x0fe3f11dU ,
0xe54cda54U , 0x1edad891U , 0xce6279cfU , 0xcd3e7e6fU ,
0x1618b166U , 0xfd2c1d05U , 0x848fd2c5U , 0xf6fb2299U ,
0xf523f357U , 0xa6327623U , 0x93a83531U , 0x56cccd02U ,
0xacf08162U , 0x5a75ebb5U , 0x6e163697U , 0x88d273ccU ,
0xde966292U , 0x81b949d0U , 0x4c50901bU , 0x71c65614U ,
0xe6c6c7bdU , 0x327a140aU , 0x45e1d006U , 0xc3f27b9aU ,
0xc9aa53fdU , 0x62a80f00U , 0xbb25bfe2U , 0x35bdd2f6U ,
0x71126905U , 0xb2040222U , 0xb6cbcf7cU , 0xcd769c2bU ,
0x53113ec0U , 0x1640e3d3U , 0x38abbd60U , 0x2547adf0U ,
0xba38209cU , 0xf746ce76U , 0x77afa1c5U , 0x20756060U ,
0x85cbfe4eU , 0x8ae88dd8U , 0x7aaaf9b0U , 0x4cf9aa7eU ,
0x1948c25cU , 0x02fb8a8cU , 0x01c36ae4U , 0xd6ebe1f9U ,
0x90d4f869U , 0xa65cdea0U , 0x3f09252dU , 0xc208e69fU ,
0xb74e6132U , 0xce77e25bU , 0x578fdfe3U , 0x3ac372e6U }
};
static uint32_t cm_bf_feist(const cm_bf_ctxt_t *ctxt, uint32_t x)
{ uint32_t a, b, c, d, y;
d = (x & 0xff);
c = (x & 0xff00) >> 8;
b = (x & 0xff0000) >> 16;
a = (x & 0xff000000) >> 24;
y = ctxt->sbox[0][a] + ctxt->sbox[1][b];
y = y ^ ctxt->sbox[2][c];
y = y + ctxt->sbox[3][d];
return y;
}
void cm_bf_encipher(const cm_bf_ctxt_t *ctxt, uint32_t *xl, uint32_t *xr)
{ uint32_t Xl, Xr, temp;
int round;
Xl = *xl;
Xr = *xr;
for (round=0; round<CM_BF_nrounds; ++round) {
Xl = Xl ^ ctxt->p[round];
Xr = cm_bf_feist(ctxt, Xl) ^ Xr;
temp = Xl;
Xl = Xr;
Xr = temp;
}
temp = Xl;
Xl = Xr;
Xr = temp;
Xr = Xr ^ ctxt->p[CM_BF_nrounds];
Xl = Xl ^ ctxt->p[CM_BF_nrounds + 1];
*xl = Xl;
*xr = Xr;
}
void cm_bf_decipher(const cm_bf_ctxt_t *ctxt, uint32_t *xl, uint32_t *xr)
{ uint32_t Xl, Xr, temp;
int round;
Xl = *xl;
Xr = *xr;
for (round=CM_BF_nrounds+1; round>1; --round) {
Xl = Xl ^ ctxt->p[round];
Xr = cm_bf_feist(ctxt, Xl) ^ Xr;
temp = Xl;
Xl = Xr;
Xr = temp;
}
temp = Xl;
Xl = Xr;
Xr = temp;
Xr = Xr ^ ctxt->p[1];
Xl = Xl ^ ctxt->p[0];
*xl = Xl;
*xr = Xr;
}
cm_bf_ctxt_t *cm_bf_init(uint8_t *key, size_t keybytes)
{ cm_bf_ctxt_t *ctxt;
uint32_t data, datal, datar;
size_t i, j, k;
ctxt = (cm_bf_ctxt_t*)malloc(sizeof(cm_bf_ctxt_t));
memcpy((void*)ctxt->p, (const void*)bf_p, sizeof(bf_p));
memcpy((void*)ctxt->sbox, (const void*)bf_sbox, sizeof(bf_sbox));
j = 0;
for (i=0; i<CM_BF_nrounds+2; ++i) {
data = 0;
for (k=0; k<4; ++k) {
data = (data << 8) | (uint32_t)key[j];
if (++j >= keybytes) j = 0;
}
ctxt->p[i] =ctxt->p[i] ^ data;
}
datal = datar = 0;
for (i=0; i<CM_BF_nrounds+2; i+= 2) {
cm_bf_encipher(ctxt, &datal, &datar);
ctxt->p[i] = datal;
ctxt->p[i + 1] = datar;
}
for (i=0; i<4; ++i) {
for (j=0; j<256; j+=2) {
cm_bf_encipher(ctxt, &datal, &datar);
ctxt->sbox[i][j] = datal;
ctxt->sbox[i][j + 1] = datar;
}
}
return ctxt;
}
void cm_bf_free(cm_bf_ctxt_t *ctxt)
{
if (ctxt == NULL) return;
memset((void*)ctxt->p, 0, sizeof(bf_p));
memset((void*)ctxt->sbox, 0, sizeof(bf_sbox));
free((void*)ctxt);
}
#ifdef TESTING
int bf_test_blowfish()
/* Check Blowfish encryption against known test-vectors */
{ struct tvec {
const char *key;
uint32_t in0, in1;
uint32_t out0, out1; }
tvecs[] = {
{ "abcdefgh", 0x01234567, 0x89abcdef,
0x89fc0a5b, 0x074df537, },
{ "ABCDwxyz", 0x12345678, 0x9abcdef0,
0x061dab8f, 0x33a16a10},
{ "alphabetti spaghetti", 0xaa55aa55, 0x55aa55aa,
0x927079bb, 0xb275bad0 },
{ "Blowfish algorithm", 0x5555aaaa, 0x01234567,
0x731ae03a, 0xda77789e },
{ NULL, 0, 0 } };
cm_bf_ctxt_t *ctxt;
uint32_t vals[2];
unsigned idx;
CM_TEST_START("Internal Blowfish");
idx = 0;
while (tvecs[idx].key != NULL) {
ctxt = cm_bf_init((uint8_t*)tvecs[idx].key,
strlen(tvecs[idx].key));
vals[0] = tvecs[idx].in0;
vals[1] = tvecs[idx].in1;
cm_bf_encipher(ctxt, vals, vals+1);
CM_ASSERT_EQUAL(tvecs[idx].out0, vals[0]);
CM_ASSERT_EQUAL(tvecs[idx].out1, vals[1]);
cm_bf_decipher(ctxt, vals, vals+1);
CM_ASSERT_EQUAL(tvecs[idx].in0, vals[0]);
CM_ASSERT_EQUAL(tvecs[idx].in1, vals[1]);
cm_bf_free(ctxt);
++idx;
}
CM_TEST_OK();
return 0;
}
#endif /* TESTING */
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