2  * cast6.c - Cast6 cipher algorithm [rfc2612].
8  * Copyright (C) 2003 Kartikey Mahendra Bhatt <kartik_me@hotmail.com>.
12  * Software Foundation; either version 2 of the License, or (at your option)
105 	key[4] ^= F3(key[5], Tr[i % 4][2], Tm[i][2]);  in W()
107 	key[2] ^= F2(key[3], Tr[i % 4][4], Tm[i][4]);  in W()
108 	key[1] ^= F3(key[2], Tr[i % 4][5], Tm[i][5]);  in W()
113 int __cast6_setkey(struct cast6_ctx *c, const u8 *in_key,  in __cast6_setkey()  argument
130 	key[2] = be32_to_cpu(p_key[2]);		/* C */  in __cast6_setkey()
138 		W(key, 2 * i);  in __cast6_setkey()
139 		W(key, 2 * i + 1);  in __cast6_setkey()
141 		c->Kr[i][0] = key[0] & 0x1f;  in __cast6_setkey()
142 		c->Kr[i][1] = key[2] & 0x1f;  in __cast6_setkey()
143 		c->Kr[i][2] = key[4] & 0x1f;  in __cast6_setkey()
144 		c->Kr[i][3] = key[6] & 0x1f;  in __cast6_setkey()
146 		c->Km[i][0] = key[7];  in __cast6_setkey()
147 		c->Km[i][1] = key[5];  in __cast6_setkey()
148 		c->Km[i][2] = key[3];  in __cast6_setkey()
149 		c->Km[i][3] = key[1];  in __cast6_setkey()
167 	block[2] ^= F1(block[3], Kr[0], Km[0]);  in Q()
168 	block[1] ^= F2(block[2], Kr[1], Km[1]);  in Q()
169 	block[0] ^= F3(block[1], Kr[2], Km[2]);  in Q()
178 	block[0] ^= F3(block[1], Kr[2], Km[2]);  in QBAR()
179 	block[1] ^= F2(block[2], Kr[1], Km[1]);  in QBAR()
180 	block[2] ^= F1(block[3], Kr[0], Km[0]);  in QBAR()
183 void __cast6_encrypt(struct cast6_ctx *c, u8 *outbuf, const u8 *inbuf)  in __cast6_encrypt()  argument
193 	block[2] = be32_to_cpu(src[2]);  in __cast6_encrypt()
196 	Km = c->Km[0]; Kr = c->Kr[0]; Q(block, Kr, Km);  in __cast6_encrypt()
197 	Km = c->Km[1]; Kr = c->Kr[1]; Q(block, Kr, Km);  in __cast6_encrypt()
198 	Km = c->Km[2]; Kr = c->Kr[2]; Q(block, Kr, Km);  in __cast6_encrypt()
199 	Km = c->Km[3]; Kr = c->Kr[3]; Q(block, Kr, Km);  in __cast6_encrypt()
200 	Km = c->Km[4]; Kr = c->Kr[4]; Q(block, Kr, Km);  in __cast6_encrypt()
201 	Km = c->Km[5]; Kr = c->Kr[5]; Q(block, Kr, Km);  in __cast6_encrypt()
202 	Km = c->Km[6]; Kr = c->Kr[6]; QBAR(block, Kr, Km);  in __cast6_encrypt()
203 	Km = c->Km[7]; Kr = c->Kr[7]; QBAR(block, Kr, Km);  in __cast6_encrypt()
204 	Km = c->Km[8]; Kr = c->Kr[8]; QBAR(block, Kr, Km);  in __cast6_encrypt()
205 	Km = c->Km[9]; Kr = c->Kr[9]; QBAR(block, Kr, Km);  in __cast6_encrypt()
206 	Km = c->Km[10]; Kr = c->Kr[10]; QBAR(block, Kr, Km);  in __cast6_encrypt()
207 	Km = c->Km[11]; Kr = c->Kr[11]; QBAR(block, Kr, Km);  in __cast6_encrypt()
211 	dst[2] = cpu_to_be32(block[2]);  in __cast6_encrypt()
221 void __cast6_decrypt(struct cast6_ctx *c, u8 *outbuf, const u8 *inbuf)  in __cast6_decrypt()  argument
231 	block[2] = be32_to_cpu(src[2]);  in __cast6_decrypt()
234 	Km = c->Km[11]; Kr = c->Kr[11]; Q(block, Kr, Km);  in __cast6_decrypt()
235 	Km = c->Km[10]; Kr = c->Kr[10]; Q(block, Kr, Km);  in __cast6_decrypt()
236 	Km = c->Km[9]; Kr = c->Kr[9]; Q(block, Kr, Km);  in __cast6_decrypt()
237 	Km = c->Km[8]; Kr = c->Kr[8]; Q(block, Kr, Km);  in __cast6_decrypt()
238 	Km = c->Km[7]; Kr = c->Kr[7]; Q(block, Kr, Km);  in __cast6_decrypt()
239 	Km = c->Km[6]; Kr = c->Kr[6]; Q(block, Kr, Km);  in __cast6_decrypt()
240 	Km = c->Km[5]; Kr = c->Kr[5]; QBAR(block, Kr, Km);  in __cast6_decrypt()
241 	Km = c->Km[4]; Kr = c->Kr[4]; QBAR(block, Kr, Km);  in __cast6_decrypt()
242 	Km = c->Km[3]; Kr = c->Kr[3]; QBAR(block, Kr, Km);  in __cast6_decrypt()
243 	Km = c->Km[2]; Kr = c->Kr[2]; QBAR(block, Kr, Km);  in __cast6_decrypt()
244 	Km = c->Km[1]; Kr = c->Kr[1]; QBAR(block, Kr, Km);  in __cast6_decrypt()
245 	Km = c->Km[0]; Kr = c->Kr[0]; QBAR(block, Kr, Km);  in __cast6_decrypt()
249 	dst[2] = cpu_to_be32(block[2]);  in __cast6_decrypt()