Orange Pi5 kernel

^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300   1) /* SPDX-License-Identifier: GPL-2.0-or-later */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300   2) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300   3)  * Symmetric key ciphers.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300   4)  * 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300   5)  * Copyright (c) 2007 Herbert Xu <herbert@gondor.apana.org.au>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300   6)  */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300   7) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300   8) #ifndef _CRYPTO_INTERNAL_SKCIPHER_H
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300   9) #define _CRYPTO_INTERNAL_SKCIPHER_H
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  10) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  11) #include <crypto/algapi.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  12) #include <crypto/internal/cipher.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  13) #include <crypto/skcipher.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  14) #include <linux/list.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  15) #include <linux/types.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  16) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  17) struct aead_request;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  18) struct rtattr;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  19) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  20) struct skcipher_instance {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  21) 	void (*free)(struct skcipher_instance *inst);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  22) 	union {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  23) 		struct {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  24) 			char head[offsetof(struct skcipher_alg, base)];
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  25) 			struct crypto_instance base;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  26) 		} s;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  27) 		struct skcipher_alg alg;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  28) 	};
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  29) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  30) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  31) struct crypto_skcipher_spawn {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  32) 	struct crypto_spawn base;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  33) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  34) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  35) struct skcipher_walk {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  36) 	union {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  37) 		struct {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  38) 			struct page *page;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  39) 			unsigned long offset;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  40) 		} phys;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  41) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  42) 		struct {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  43) 			u8 *page;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  44) 			void *addr;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  45) 		} virt;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  46) 	} src, dst;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  47) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  48) 	struct scatter_walk in;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  49) 	unsigned int nbytes;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  50) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  51) 	struct scatter_walk out;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  52) 	unsigned int total;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  53) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  54) 	struct list_head buffers;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  55) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  56) 	u8 *page;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  57) 	u8 *buffer;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  58) 	u8 *oiv;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  59) 	void *iv;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  60) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  61) 	unsigned int ivsize;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  62) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  63) 	int flags;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  64) 	unsigned int blocksize;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  65) 	unsigned int stride;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  66) 	unsigned int alignmask;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  67) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  68) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  69) static inline struct crypto_instance *skcipher_crypto_instance(
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  70) 	struct skcipher_instance *inst)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  71) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  72) 	return &inst->s.base;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  73) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  74) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  75) static inline struct skcipher_instance *skcipher_alg_instance(
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  76) 	struct crypto_skcipher *skcipher)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  77) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  78) 	return container_of(crypto_skcipher_alg(skcipher),
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  79) 			    struct skcipher_instance, alg);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  80) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  81) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  82) static inline void *skcipher_instance_ctx(struct skcipher_instance *inst)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  83) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  84) 	return crypto_instance_ctx(skcipher_crypto_instance(inst));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  85) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  86) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  87) static inline void skcipher_request_complete(struct skcipher_request *req, int err)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  88) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  89) 	req->base.complete(&req->base, err);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  90) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  91) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  92) int crypto_grab_skcipher(struct crypto_skcipher_spawn *spawn,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  93) 			 struct crypto_instance *inst,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  94) 			 const char *name, u32 type, u32 mask);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  95) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  96) static inline void crypto_drop_skcipher(struct crypto_skcipher_spawn *spawn)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  97) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  98) 	crypto_drop_spawn(&spawn->base);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  99) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 100) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 101) static inline struct skcipher_alg *crypto_skcipher_spawn_alg(
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 102) 	struct crypto_skcipher_spawn *spawn)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 103) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 104) 	return container_of(spawn->base.alg, struct skcipher_alg, base);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 105) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 106) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 107) static inline struct skcipher_alg *crypto_spawn_skcipher_alg(
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 108) 	struct crypto_skcipher_spawn *spawn)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 109) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 110) 	return crypto_skcipher_spawn_alg(spawn);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 111) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 112) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 113) static inline struct crypto_skcipher *crypto_spawn_skcipher(
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 114) 	struct crypto_skcipher_spawn *spawn)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 115) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 116) 	return crypto_spawn_tfm2(&spawn->base);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 117) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 118) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 119) static inline void crypto_skcipher_set_reqsize(
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 120) 	struct crypto_skcipher *skcipher, unsigned int reqsize)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 121) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 122) 	skcipher->reqsize = reqsize;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 123) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 124) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 125) int crypto_register_skcipher(struct skcipher_alg *alg);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 126) void crypto_unregister_skcipher(struct skcipher_alg *alg);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 127) int crypto_register_skciphers(struct skcipher_alg *algs, int count);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 128) void crypto_unregister_skciphers(struct skcipher_alg *algs, int count);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 129) int skcipher_register_instance(struct crypto_template *tmpl,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 130) 			       struct skcipher_instance *inst);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 131) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 132) int skcipher_walk_done(struct skcipher_walk *walk, int err);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 133) int skcipher_walk_virt(struct skcipher_walk *walk,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 134) 		       struct skcipher_request *req,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 135) 		       bool atomic);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 136) void skcipher_walk_atomise(struct skcipher_walk *walk);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 137) int skcipher_walk_async(struct skcipher_walk *walk,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 138) 			struct skcipher_request *req);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 139) int skcipher_walk_aead_encrypt(struct skcipher_walk *walk,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 140) 			       struct aead_request *req, bool atomic);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 141) int skcipher_walk_aead_decrypt(struct skcipher_walk *walk,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 142) 			       struct aead_request *req, bool atomic);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 143) void skcipher_walk_complete(struct skcipher_walk *walk, int err);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 144) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 145) static inline void skcipher_walk_abort(struct skcipher_walk *walk)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 146) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 147) 	skcipher_walk_done(walk, -ECANCELED);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 148) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 149) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 150) static inline void *crypto_skcipher_ctx(struct crypto_skcipher *tfm)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 151) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 152) 	return crypto_tfm_ctx(&tfm->base);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 153) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 154) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 155) static inline void *skcipher_request_ctx(struct skcipher_request *req)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 156) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 157) 	return req->__ctx;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 158) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 159) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 160) static inline u32 skcipher_request_flags(struct skcipher_request *req)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 161) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 162) 	return req->base.flags;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 163) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 164) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 165) static inline unsigned int crypto_skcipher_alg_min_keysize(
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 166) 	struct skcipher_alg *alg)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 167) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 168) 	return alg->min_keysize;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 169) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 170) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 171) static inline unsigned int crypto_skcipher_alg_max_keysize(
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 172) 	struct skcipher_alg *alg)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 173) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 174) 	return alg->max_keysize;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 175) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 176) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 177) static inline unsigned int crypto_skcipher_alg_walksize(
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 178) 	struct skcipher_alg *alg)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 179) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 180) 	return alg->walksize;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 181) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 182) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 183) /**
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 184)  * crypto_skcipher_walksize() - obtain walk size
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 185)  * @tfm: cipher handle
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 186)  *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 187)  * In some cases, algorithms can only perform optimally when operating on
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 188)  * multiple blocks in parallel. This is reflected by the walksize, which
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 189)  * must be a multiple of the chunksize (or equal if the concern does not
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 190)  * apply)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 191)  *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 192)  * Return: walk size in bytes
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 193)  */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 194) static inline unsigned int crypto_skcipher_walksize(
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 195) 	struct crypto_skcipher *tfm)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 196) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 197) 	return crypto_skcipher_alg_walksize(crypto_skcipher_alg(tfm));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 198) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 199) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 200) /* Helpers for simple block cipher modes of operation */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 201) struct skcipher_ctx_simple {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 202) 	struct crypto_cipher *cipher;	/* underlying block cipher */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 203) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 204) static inline struct crypto_cipher *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 205) skcipher_cipher_simple(struct crypto_skcipher *tfm)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 206) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 207) 	struct skcipher_ctx_simple *ctx = crypto_skcipher_ctx(tfm);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 208) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 209) 	return ctx->cipher;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 210) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 211) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 212) struct skcipher_instance *skcipher_alloc_instance_simple(
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 213) 	struct crypto_template *tmpl, struct rtattr **tb);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 214) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 215) static inline struct crypto_alg *skcipher_ialg_simple(
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 216) 	struct skcipher_instance *inst)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 217) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 218) 	struct crypto_cipher_spawn *spawn = skcipher_instance_ctx(inst);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 219) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 220) 	return crypto_spawn_cipher_alg(spawn);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 221) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 222) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 223) #endif	/* _CRYPTO_INTERNAL_SKCIPHER_H */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 224)