/* * ECB: Electronic CodeBook mode * * Copyright (c) 2006 Herbert Xu * * This program is free software; you can redistribute it and/or modify it * under the terms of the GNU General Public License as published by the Free * Software Foundation; either version 2 of the License, or (at your option) * any later version. * */ #include #include #include #include #include #include #include struct crypto_ecb_ctx { struct crypto_cipher *child; }; static int crypto_ecb_setkey(struct crypto_tfm *parent, const u8 *key, unsigned int keylen) { struct crypto_ecb_ctx *ctx = crypto_tfm_ctx(parent); struct crypto_cipher *child = ctx->child; int err; crypto_cipher_clear_flags(child, CRYPTO_TFM_REQ_MASK); crypto_cipher_set_flags(child, crypto_tfm_get_flags(parent) & CRYPTO_TFM_REQ_MASK); err = crypto_cipher_setkey(child, key, keylen); crypto_tfm_set_flags(parent, crypto_cipher_get_flags(child) & CRYPTO_TFM_RES_MASK); return err; } static int crypto_ecb_crypt(struct blkcipher_desc *desc, struct blkcipher_walk *walk, struct crypto_cipher *tfm, void (*fn)(struct crypto_tfm *, u8 *, const u8 *)) { int bsize = crypto_cipher_blocksize(tfm); unsigned int nbytes; int err; err = blkcipher_walk_virt(desc, walk); while ((nbytes = walk->nbytes)) { u8 *wsrc = walk->src.virt.addr; u8 *wdst = walk->dst.virt.addr; do { fn(crypto_cipher_tfm(tfm), wdst, wsrc); wsrc += bsize; wdst += bsize; } while ((nbytes -= bsize) >= bsize); err = blkcipher_walk_done(desc, walk, nbytes); } return err; } static int crypto_ecb_encrypt(struct blkcipher_desc *desc, struct scatterlist *dst, struct scatterlist *src, unsigned int nbytes) { struct blkcipher_walk walk; struct crypto_blkcipher *tfm = desc->tfm; struct crypto_ecb_ctx *ctx = crypto_blkcipher_ctx(tfm); struct crypto_cipher *child = ctx->child; blkcipher_walk_init(&walk, dst, src, nbytes); return crypto_ecb_crypt(desc, &walk, child, crypto_cipher_alg(child)->cia_encrypt); } static int crypto_ecb_decrypt(struct blkcipher_desc *desc, struct scatterlist *dst, struct scatterlist *src, unsigned int nbytes) { struct blkcipher_walk walk; struct crypto_blkcipher *tfm = desc->tfm; struct crypto_ecb_ctx *ctx = crypto_blkcipher_ctx(tfm); struct crypto_cipher *child = ctx->child; blkcipher_walk_init(&walk, dst, src, nbytes); return crypto_ecb_crypt(desc, &walk, child, crypto_cipher_alg(child)->cia_decrypt); } static int crypto_ecb_init_tfm(struct crypto_tfm *tfm) { struct crypto_instance *inst = (void *)tfm->__crt_alg; struct crypto_spawn *spawn = crypto_instance_ctx(inst); struct crypto_ecb_ctx *ctx = crypto_tfm_ctx(tfm); struct crypto_cipher *cipher; cipher = crypto_spawn_cipher(spawn); if (IS_ERR(cipher)) return PTR_ERR(cipher); ctx->child = cipher; return 0; } static void crypto_ecb_exit_tfm(struct crypto_tfm *tfm) { struct crypto_ecb_ctx *ctx = crypto_tfm_ctx(tfm); crypto_free_cipher(ctx->child); } static struct crypto_instance *crypto_ecb_alloc(struct rtattr **tb) { struct crypto_instance *inst; struct crypto_alg *alg; int err; err = crypto_check_attr_type(tb, CRYPTO_ALG_TYPE_BLKCIPHER); if (err) return ERR_PTR(err); alg = crypto_get_attr_alg(tb, CRYPTO_ALG_TYPE_CIPHER, CRYPTO_ALG_TYPE_MASK); if (IS_ERR(alg)) return ERR_CAST(alg); inst = crypto_alloc_instance("ecb", alg); if (IS_ERR(inst)) goto out_put_alg; inst->alg.cra_flags = CRYPTO_ALG_TYPE_BLKCIPHER; inst->alg.cra_priority = alg->cra_priority; inst->alg.cra_blocksize = alg->cra_blocksize; inst->alg.cra_alignmask = alg->cra_alignmask; inst->alg.cra_type = &crypto_blkcipher_type; inst->alg.cra_blkcipher.min_keysize = alg->cra_cipher.cia_min_keysize; inst->alg.cra_blkcipher.max_keysize = alg->cra_cipher.cia_max_keysize; inst->alg.cra_ctxsize = sizeof(struct crypto_ecb_ctx); inst->alg.cra_init = crypto_ecb_init_tfm; inst->alg.cra_exit = crypto_ecb_exit_tfm; inst->alg.cra_blkcipher.setkey = crypto_ecb_setkey; inst->alg.cra_blkcipher.encrypt = crypto_ecb_encrypt; inst->alg.cra_blkcipher.decrypt = crypto_ecb_decrypt; out_put_alg: crypto_mod_put(alg); return inst; } static void crypto_ecb_free(struct crypto_instance *inst) { crypto_drop_spawn(crypto_instance_ctx(inst)); kfree(inst); } static struct crypto_template crypto_ecb_tmpl = { .name = "ecb", .alloc = crypto_ecb_alloc, .free = crypto_ecb_free, .module = THIS_MODULE, }; static int __init crypto_ecb_module_init(void) { return crypto_register_template(&crypto_ecb_tmpl); } static void __exit crypto_ecb_module_exit(void) { crypto_unregister_template(&crypto_ecb_tmpl); } module_init(crypto_ecb_module_init); module_exit(crypto_ecb_module_exit); MODULE_LICENSE("GPL"); MODULE_DESCRIPTION("ECB block cipher algorithm"); MODULE_ALIAS_CRYPTO("ecb"); .y'>linux-5.17.y Hosts the 0x221E linux distro kernel.Ubuntu
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path: root/lib/prio_heap.c
amp;id=5852ae42424e3ddba2d3bdf594f72189497f17ee'>root/sound/drivers
AgeCommit message (Expand)Author
et/xfrm?h=linux-3.19.y&id=5f013c9bc70214dcacd5fbed5a06c217d6ff9c59'>Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net
AgeCommit message (Expand)Author
2009-02-12ALSA: mtpav - Fix initial value for input hwportTakashi Iwai
2008-12-30Merge branch 'timers-core-for-linus' of git://git.kernel.org/pub/scm/linux/ke...Linus Torvalds
2008-12-25Merge branch 'topic/convert-tasklet' into to-pushTakashi Iwai
2008-12-20Merge branch 'topic/pcsp-fix' into topic/miscTakashi Iwai
2008-12-18ALSA: hda - Convert from takslet_hi_schedule() to tasklet_schedule()Takashi Iwai
2008-11-28ALSA: ac97 - Remove EXPERIMENTAL from CONFIG_SND_AC97_POWER_SAVETakashi Iwai
2008-11-26ALSA: pcsp - Fix starting the stream with HRTIMER_CB_IRQSAFE_UNLOCKTakashi Iwai
2008-11-26Merge branch 'topic/misc' into topic/pcsp-fixTakashi Iwai
2008-11-25hrtimer: removing all ur callback modesPeter Zijlstra
2008-11-14ALSA: pcsp - Use HRTIMER_CB_IRQSAFE_UNLOCKEDTakashi Iwai
2008-11-07Merge branch 'topic/fix/misc' into topic/miscTakashi Iwai
2008-11-03Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tiw...Linus Torvalds
2008-11-03sound: struct device - replace bus_id with dev_name(), dev_set_name()Kay Sievers
2008-11-03ALSA: Fix PIT lockup on some chipsets when using the PC-SpeakerZoltan Devai
2008-10-27Merge branch 'topic/misc-next' into topic/miscTakashi Iwai
2008-10-22Merge branch 'timers/range-hrtimers' into v28-range-hrtimers-for-linus-v2Thomas Gleixner
2008-10-20ALSA: pcsp - Fix locking messes in snd-pcspTakashi Iwai
2008-10-19ALSA: misc typo fixesMariusz Kozlowski
2008-10-17Merge commit 'linus/master' into merge-linusArjan van de Ven
2008-10-10ALSA: mtpav - Fix race in probeTakashi Iwai
2008-09-05hrtimer: convert sound/ to the new hrtimer apisArjan van de Ven
2008-08-15ALSA: dummy driver - do not use assignment in if conditionJaroslav Kysela
2008-08-15sound: Fix esoteric double free in the dummy sound driver.Daniel THOMPSON
2008-08-13ALSA: Kill snd_assert() in other placesTakashi Iwai
David S. Miller
2014-05-07net: clean up snmp stats codeWANG Cong
2014-04-24net: Use netlink_ns_capable to verify the permisions of netlink messagesEric W. Biederman
2014-04-23xfrm: Remove useless xfrm_audit struct.Tetsuo Handa
2014-04-22xfrm: Remove useless secid field from xfrm_audit.Tetsuo Handa
2014-04-15ipv4: add a sock pointer to dst->output() path.Eric Dumazet