Re: [PATCH 1/1] CryptoAPI: Add Async Hash Support | |
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On Tue, Apr 22, 2008 at 10:23:23AM -0700, Loc Ho wrote:
>
> They are attached instead inline until I figure out how to not wrap long
> line.
Thanks. I've finally finished testing and integrating it. I've
merged them into one patch and dropped unrelated white-space
changes. You can resubmit those in a separate patch.
Could you please recheck this and if everything looks OK then
send it to me again with a sign-off? Oh and if you don't mind
please split the tcrypt and cryptd parts into separate patches
since they're conceptually distinct from the API bits.
Finally a proper description before each patch would be nice :)
Thanks,
--
Visit Openswan at http://www.openswan.org/
Email: Herbert Xu ~{PmV>HI~} <herbert@xxxxxxxxxxxxxxxxxxx>
Home Page: http://gondor.apana.org.au/~herbert/
PGP Key: http://gondor.apana.org.au/~herbert/pubkey.txt
--
diff --git a/crypto/Makefile b/crypto/Makefile
index ca02441..6ea428a 100644
--- a/crypto/Makefile
+++ b/crypto/Makefile
@@ -19,6 +19,7 @@ obj-$(CONFIG_CRYPTO_BLKCIPHER) += crypto_blkcipher.o
obj-$(CONFIG_CRYPTO_SEQIV) += seqiv.o
crypto_hash-objs := hash.o
+crypto_hash-objs += ahash.o
obj-$(CONFIG_CRYPTO_HASH) += crypto_hash.o
obj-$(CONFIG_CRYPTO_MANAGER) += cryptomgr.o
diff --git a/crypto/ahash.c b/crypto/ahash.c
new file mode 100644
index 0000000..a83e035
--- /dev/null
+++ b/crypto/ahash.c
@@ -0,0 +1,106 @@
+/*
+ * Asynchronous Cryptographic Hash operations.
+ *
+ * This is the asynchronous version of hash.c with notification of
+ * completion via a callback.
+ *
+ * Copyright (c) 2008 Loc Ho <lho@xxxxxxxx>
+ *
+ * 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 <crypto/algapi.h>
+#include <linux/err.h>
+#include <linux/kernel.h>
+#include <linux/module.h>
+#include <linux/sched.h>
+#include <linux/slab.h>
+#include <linux/seq_file.h>
+
+#include "internal.h"
+
+static int ahash_setkey_unaligned(struct crypto_ahash *tfm, const u8 *key,
+ unsigned int keylen)
+{
+ struct ahash_alg *ahash = crypto_ahash_alg(tfm);
+ unsigned long alignmask = crypto_ahash_alignmask(tfm);
+ int ret;
+ u8 *buffer, *alignbuffer;
+ unsigned long absize;
+
+ absize = keylen + alignmask;
+ buffer = kmalloc(absize, GFP_ATOMIC);
+ if (!buffer)
+ return -ENOMEM;
+
+ alignbuffer = (u8 *)ALIGN((unsigned long)buffer, alignmask + 1);
+ memcpy(alignbuffer, key, keylen);
+ ret = ahash->setkey(tfm, alignbuffer, keylen);
+ memset(alignbuffer, 0, keylen);
+ kfree(buffer);
+ return ret;
+}
+
+static int ahash_setkey(struct crypto_ahash *tfm, const u8 *key,
+ unsigned int keylen)
+{
+ struct ahash_alg *ahash = crypto_ahash_alg(tfm);
+ unsigned long alignmask = crypto_ahash_alignmask(tfm);
+
+ if ((unsigned long)key & alignmask)
+ return ahash_setkey_unaligned(tfm, key, keylen);
+
+ return ahash->setkey(tfm, key, keylen);
+}
+
+static unsigned int crypto_ahash_ctxsize(struct crypto_alg *alg, u32 type,
+ u32 mask)
+{
+ return alg->cra_ctxsize;
+}
+
+static int crypto_init_ahash_ops(struct crypto_tfm *tfm, u32 type, u32 mask)
+{
+ struct ahash_alg *alg = &tfm->__crt_alg->cra_ahash;
+ struct ahash_tfm *crt = &tfm->crt_ahash;
+
+ if (alg->digestsize > crypto_tfm_alg_blocksize(tfm))
+ return -EINVAL;
+
+ crt->init = alg->init;
+ crt->update = alg->update;
+ crt->final = alg->final;
+ crt->digest = alg->digest;
+ crt->setkey = ahash_setkey;
+ crt->base = __crypto_ahash_cast(tfm);
+ crt->digestsize = alg->digestsize;
+
+ return 0;
+}
+
+static void crypto_ahash_show(struct seq_file *m, struct crypto_alg *alg)
+ __attribute__ ((unused));
+static void crypto_ahash_show(struct seq_file *m, struct crypto_alg *alg)
+{
+ seq_printf(m, "type : ahash\n");
+ seq_printf(m, "async : %s\n", alg->cra_flags & CRYPTO_ALG_ASYNC ?
+ "yes" : "no");
+ seq_printf(m, "blocksize : %u\n", alg->cra_blocksize);
+ seq_printf(m, "digestsize : %u\n", alg->cra_hash.digestsize);
+}
+
+const struct crypto_type crypto_ahash_type = {
+ .ctxsize = crypto_ahash_ctxsize,
+ .init = crypto_init_ahash_ops,
+#ifdef CONFIG_PROC_FS
+ .show = crypto_ahash_show,
+#endif
+};
+EXPORT_SYMBOL_GPL(crypto_ahash_type);
+
+MODULE_LICENSE("GPL");
+MODULE_DESCRIPTION("Asynchronous cryptographic hash type");
diff --git a/crypto/api.c b/crypto/api.c
index 0a0f41e..d06e332 100644
--- a/crypto/api.c
+++ b/crypto/api.c
@@ -235,8 +235,12 @@ static int crypto_init_ops(struct crypto_tfm *tfm, u32 type, u32 mask)
return crypto_init_cipher_ops(tfm);
case CRYPTO_ALG_TYPE_DIGEST:
- return crypto_init_digest_ops(tfm);
-
+ if ((mask & CRYPTO_ALG_TYPE_HASH_MASK) !=
+ CRYPTO_ALG_TYPE_HASH_MASK)
+ return crypto_init_digest_ops_async(tfm);
+ else
+ return crypto_init_digest_ops(tfm);
+
case CRYPTO_ALG_TYPE_COMPRESS:
return crypto_init_compress_ops(tfm);
diff --git a/crypto/cryptd.c b/crypto/cryptd.c
index 2504252..83fe67f 100644
--- a/crypto/cryptd.c
+++ b/crypto/cryptd.c
@@ -45,6 +45,13 @@ struct cryptd_blkcipher_request_ctx {
crypto_completion_t complete;
};
+struct cryptd_hash_ctx {
+ struct crypto_hash *child;
+};
+
+struct cryptd_hash_request_ctx {
+ crypto_completion_t complete;
+};
static inline struct cryptd_state *cryptd_get_state(struct crypto_tfm *tfm)
{
@@ -259,6 +266,240 @@ out_put_alg:
return inst;
}
+static int cryptd_hash_init_tfm(struct crypto_tfm *tfm)
+{
+ struct crypto_instance *inst = crypto_tfm_alg_instance(tfm);
+ struct cryptd_instance_ctx *ictx = crypto_instance_ctx(inst);
+ struct crypto_spawn *spawn = &ictx->spawn;
+ struct cryptd_hash_ctx *ctx = crypto_tfm_ctx(tfm);
+ struct crypto_hash *cipher;
+
+ cipher = crypto_spawn_hash(spawn);
+ if (IS_ERR(cipher))
+ return PTR_ERR(cipher);
+
+ ctx->child = cipher;
+ tfm->crt_ahash.reqsize =
+ sizeof(struct cryptd_hash_request_ctx);
+ return 0;
+}
+
+static void cryptd_hash_exit_tfm(struct crypto_tfm *tfm)
+{
+ struct cryptd_hash_ctx *ctx = crypto_tfm_ctx(tfm);
+ struct cryptd_state *state = cryptd_get_state(tfm);
+ int active;
+
+ mutex_lock(&state->mutex);
+ active = ahash_tfm_in_queue(&state->queue,
+ __crypto_ahash_cast(tfm));
+ mutex_unlock(&state->mutex);
+
+ BUG_ON(active);
+
+ crypto_free_hash(ctx->child);
+}
+
+static int cryptd_hash_setkey(struct crypto_ahash *parent,
+ const u8 *key, unsigned int keylen)
+{
+ struct cryptd_hash_ctx *ctx = crypto_ahash_ctx(parent);
+ struct crypto_hash *child = ctx->child;
+ int err;
+
+ crypto_hash_clear_flags(child, CRYPTO_TFM_REQ_MASK);
+ crypto_hash_set_flags(child, crypto_ahash_get_flags(parent) &
+ CRYPTO_TFM_REQ_MASK);
+ err = crypto_hash_setkey(child, key, keylen);
+ crypto_ahash_set_flags(parent, crypto_hash_get_flags(child) &
+ CRYPTO_TFM_RES_MASK);
+ return err;
+}
+
+static int cryptd_hash_enqueue(struct ahash_request *req,
+ crypto_completion_t complete)
+{
+ struct cryptd_hash_request_ctx *rctx = ahash_request_ctx(req);
+ struct crypto_ahash *tfm = crypto_ahash_reqtfm(req);
+ struct cryptd_state *state =
+ cryptd_get_state(crypto_ahash_tfm(tfm));
+ int err;
+
+ rctx->complete = req->base.complete;
+ req->base.complete = complete;
+
+ spin_lock_bh(&state->lock);
+ err = ahash_enqueue_request(&state->queue, req);
+ spin_unlock_bh(&state->lock);
+
+ wake_up_process(state->task);
+ return err;
+}
+
+static void cryptd_hash_init(struct crypto_async_request *req_async, int err)
+{
+ struct cryptd_hash_ctx *ctx = crypto_tfm_ctx(req_async->tfm);
+ struct crypto_hash *child = ctx->child;
+ struct ahash_request *req = ahash_request_cast(req_async);
+ struct cryptd_hash_request_ctx *rctx;
+ struct hash_desc desc;
+
+ rctx = ahash_request_ctx(req);
+
+ if (unlikely(err == -EINPROGRESS))
+ goto out;
+
+ desc.tfm = child;
+ desc.flags = CRYPTO_TFM_REQ_MAY_SLEEP;
+
+ err = crypto_hash_crt(child)->init(&desc);
+
+ req->base.complete = rctx->complete;
+
+out:
+ local_bh_disable();
+ rctx->complete(&req->base, err);
+ local_bh_enable();
+}
+
+static int cryptd_hash_init_enqueue(struct ahash_request *req)
+{
+ return cryptd_hash_enqueue(req, cryptd_hash_init);
+}
+
+static void cryptd_hash_update(struct crypto_async_request *req_async, int err)
+{
+ struct cryptd_hash_ctx *ctx = crypto_tfm_ctx(req_async->tfm);
+ struct crypto_hash *child = ctx->child;
+ struct ahash_request *req = ahash_request_cast(req_async);
+ struct cryptd_hash_request_ctx *rctx;
+ struct hash_desc desc;
+
+ rctx = ahash_request_ctx(req);
+
+ if (unlikely(err == -EINPROGRESS))
+ goto out;
+
+ desc.tfm = child;
+ desc.flags = CRYPTO_TFM_REQ_MAY_SLEEP;
+
+ err = crypto_hash_crt(child)->update(&desc,
+ req->src,
+ req->nbytes);
+
+ req->base.complete = rctx->complete;
+
+out:
+ local_bh_disable();
+ rctx->complete(&req->base, err);
+ local_bh_enable();
+}
+
+static int cryptd_hash_update_enqueue(struct ahash_request *req)
+{
+ return cryptd_hash_enqueue(req, cryptd_hash_update);
+}
+
+static void cryptd_hash_final(struct crypto_async_request *req_async, int err)
+{
+ struct cryptd_hash_ctx *ctx = crypto_tfm_ctx(req_async->tfm);
+ struct crypto_hash *child = ctx->child;
+ struct ahash_request *req = ahash_request_cast(req_async);
+ struct cryptd_hash_request_ctx *rctx;
+ struct hash_desc desc;
+
+ rctx = ahash_request_ctx(req);
+
+ if (unlikely(err == -EINPROGRESS))
+ goto out;
+
+ desc.tfm = child;
+ desc.flags = CRYPTO_TFM_REQ_MAY_SLEEP;
+
+ err = crypto_hash_crt(child)->final(&desc, req->result);
+
+ req->base.complete = rctx->complete;
+
+out:
+ local_bh_disable();
+ rctx->complete(&req->base, err);
+ local_bh_enable();
+}
+
+static int cryptd_hash_final_enqueue(struct ahash_request *req)
+{
+ return cryptd_hash_enqueue(req, cryptd_hash_final);
+}
+
+static void cryptd_hash_digest(struct crypto_async_request *req_async, int err)
+{
+ struct cryptd_hash_ctx *ctx = crypto_tfm_ctx(req_async->tfm);
+ struct crypto_hash *child = ctx->child;
+ struct ahash_request *req = ahash_request_cast(req_async);
+ struct cryptd_hash_request_ctx *rctx;
+ struct hash_desc desc;
+
+ rctx = ahash_request_ctx(req);
+
+ if (unlikely(err == -EINPROGRESS))
+ goto out;
+
+ desc.tfm = child;
+ desc.flags = CRYPTO_TFM_REQ_MAY_SLEEP;
+
+ err = crypto_hash_crt(child)->digest(&desc,
+ req->src,
+ req->nbytes,
+ req->result);
+
+ req->base.complete = rctx->complete;
+
+out:
+ local_bh_disable();
+ rctx->complete(&req->base, err);
+ local_bh_enable();
+}
+
+static int cryptd_hash_digest_enqueue(struct ahash_request *req)
+{
+ return cryptd_hash_enqueue(req, cryptd_hash_digest);
+}
+
+static struct crypto_instance *cryptd_alloc_hash(
+ struct rtattr **tb, struct cryptd_state *state)
+{
+ struct crypto_instance *inst;
+ struct crypto_alg *alg;
+
+ alg = crypto_get_attr_alg(tb, CRYPTO_ALG_TYPE_HASH,
+ CRYPTO_ALG_TYPE_HASH_MASK);
+ if (IS_ERR(alg))
+ return ERR_PTR(PTR_ERR(alg));
+
+ inst = cryptd_alloc_instance(alg, state);
+ if (IS_ERR(inst))
+ goto out_put_alg;
+
+ inst->alg.cra_flags = CRYPTO_ALG_TYPE_AHASH | CRYPTO_ALG_ASYNC;
+ inst->alg.cra_type = &crypto_ahash_type;
+
+ inst->alg.cra_ahash.digestsize = alg->cra_hash.digestsize;
+ inst->alg.cra_ctxsize = sizeof(struct cryptd_hash_ctx);
+
+ inst->alg.cra_init = cryptd_hash_init_tfm;
+ inst->alg.cra_exit = cryptd_hash_exit_tfm;
+
+ inst->alg.cra_ahash.init = cryptd_hash_init_enqueue;
+ inst->alg.cra_ahash.update = cryptd_hash_update_enqueue;
+ inst->alg.cra_ahash.final = cryptd_hash_final_enqueue;
+ inst->alg.cra_ahash.setkey = cryptd_hash_setkey;
+ inst->alg.cra_ahash.digest = cryptd_hash_digest_enqueue;
+
+out_put_alg:
+ crypto_mod_put(alg);
+ return inst;
+}
+
static struct cryptd_state state;
static struct crypto_instance *cryptd_alloc(struct rtattr **tb)
@@ -272,6 +513,8 @@ static struct crypto_instance *cryptd_alloc(struct rtattr **tb)
switch (algt->type & algt->mask & CRYPTO_ALG_TYPE_MASK) {
case CRYPTO_ALG_TYPE_BLKCIPHER:
return cryptd_alloc_blkcipher(tb, &state);
+ case CRYPTO_ALG_TYPE_DIGEST:
+ return cryptd_alloc_hash(tb, &state);
}
return ERR_PTR(-EINVAL);
diff --git a/crypto/digest.c b/crypto/digest.c
index b526cc3..025c9ae 100644
--- a/crypto/digest.c
+++ b/crypto/digest.c
@@ -157,3 +157,84 @@ int crypto_init_digest_ops(struct crypto_tfm *tfm)
void crypto_exit_digest_ops(struct crypto_tfm *tfm)
{
}
+
+static int digest_async_nosetkey(struct crypto_ahash *tfm_async, const u8 *key,
+ unsigned int keylen)
+{
+ crypto_ahash_clear_flags(tfm_async, CRYPTO_TFM_RES_MASK);
+ return -ENOSYS;
+}
+
+static int digest_async_setkey(struct crypto_ahash *tfm_async, const u8 *key,
+ unsigned int keylen)
+{
+ struct crypto_tfm *tfm = crypto_ahash_tfm(tfm_async);
+ struct digest_alg *dalg = &tfm->__crt_alg->cra_digest;
+
+ crypto_ahash_clear_flags(tfm_async, CRYPTO_TFM_RES_MASK);
+ return dalg->dia_setkey(tfm, key, keylen);
+}
+
+static int digest_async_init(struct ahash_request *req)
+{
+ struct crypto_tfm *tfm = req->base.tfm;
+ struct digest_alg *dalg = &tfm->__crt_alg->cra_digest;
+
+ dalg->dia_init(tfm);
+ return 0;
+}
+
+static int digest_async_update(struct ahash_request *req)
+{
+ struct crypto_tfm *tfm = req->base.tfm;
+ struct hash_desc desc = {
+ .tfm = __crypto_hash_cast(tfm),
+ .flags = req->base.flags,
+ };
+
+ update(&desc, req->src, req->nbytes);
+ return 0;
+}
+
+static int digest_async_final(struct ahash_request *req)
+{
+ struct crypto_tfm *tfm = req->base.tfm;
+ struct hash_desc desc = {
+ .tfm = __crypto_hash_cast(tfm),
+ .flags = req->base.flags,
+ };
+
+ final(&desc, req->result);
+ return 0;
+}
+
+static int digest_async_digest(struct ahash_request *req)
+{
+ struct crypto_tfm *tfm = req->base.tfm;
+ struct hash_desc desc = {
+ .tfm = __crypto_hash_cast(tfm),
+ .flags = req->base.flags,
+ };
+
+ return digest(&desc, req->src, req->nbytes, req->result);
+}
+
+int crypto_init_digest_ops_async(struct crypto_tfm *tfm)
+{
+ struct ahash_tfm *crt = &tfm->crt_ahash;
+ struct digest_alg *dalg = &tfm->__crt_alg->cra_digest;
+
+ if (dalg->dia_digestsize > crypto_tfm_alg_blocksize(tfm))
+ return -EINVAL;
+
+ crt->init = digest_async_init;
+ crt->update = digest_async_update;
+ crt->final = digest_async_final;
+ crt->digest = digest_async_digest;
+ crt->setkey = dalg->dia_setkey ? digest_async_setkey :
+ digest_async_nosetkey;
+ crt->digestsize = dalg->dia_digestsize;
+ crt->base = __crypto_ahash_cast(tfm);
+
+ return 0;
+}
diff --git a/crypto/hash.c b/crypto/hash.c
index 7dcff67..f9400a0 100644
--- a/crypto/hash.c
+++ b/crypto/hash.c
@@ -59,24 +59,108 @@ static int hash_setkey(struct crypto_hash *crt, const u8 *key,
return alg->setkey(crt, key, keylen);
}
-static int crypto_init_hash_ops(struct crypto_tfm *tfm, u32 type, u32 mask)
+static int hash_async_setkey(struct crypto_ahash *tfm_async, const u8 *key,
+ unsigned int keylen)
+{
+ struct crypto_tfm *tfm = crypto_ahash_tfm(tfm_async);
+ struct crypto_hash *tfm_hash = __crypto_hash_cast(tfm);
+ struct hash_alg *alg = &tfm->__crt_alg->cra_hash;
+
+ return alg->setkey(tfm_hash, key, keylen);
+}
+
+static int hash_async_init(struct ahash_request *req)
+{
+ struct crypto_tfm *tfm = req->base.tfm;
+ struct hash_alg *alg = &tfm->__crt_alg->cra_hash;
+ struct hash_desc desc = {
+ .tfm = __crypto_hash_cast(tfm),
+ .flags = req->base.flags,
+ };
+
+ return alg->init(&desc);
+}
+
+static int hash_async_update(struct ahash_request *req)
+{
+ struct crypto_tfm *tfm = req->base.tfm;
+ struct hash_alg *alg = &tfm->__crt_alg->cra_hash;
+ struct hash_desc desc = {
+ .tfm = __crypto_hash_cast(tfm),
+ .flags = req->base.flags,
+ };
+
+ return alg->update(&desc, req->src, req->nbytes);
+}
+
+static int hash_async_final(struct ahash_request *req)
+{
+ struct crypto_tfm *tfm = req->base.tfm;
+ struct hash_alg *alg = &tfm->__crt_alg->cra_hash;
+ struct hash_desc desc = {
+ .tfm = __crypto_hash_cast(tfm),
+ .flags = req->base.flags,
+ };
+
+ return alg->final(&desc, req->result);
+}
+
+static int hash_async_digest(struct ahash_request *req)
+{
+ struct crypto_tfm *tfm = req->base.tfm;
+ struct hash_alg *alg = &tfm->__crt_alg->cra_hash;
+ struct hash_desc desc = {
+ .tfm = __crypto_hash_cast(tfm),
+ .flags = req->base.flags,
+ };
+
+ return alg->digest(&desc, req->src, req->nbytes, req->result);
+}
+
+static int crypto_init_hash_ops_async(struct crypto_tfm *tfm)
+{
+ struct ahash_tfm *crt = &tfm->crt_ahash;
+ struct hash_alg *alg = &tfm->__crt_alg->cra_hash;
+
+ crt->init = hash_async_init;
+ crt->update = hash_async_update;
+ crt->final = hash_async_final;
+ crt->digest = hash_async_digest;
+ crt->setkey = hash_async_setkey;
+ crt->digestsize = alg->digestsize;
+ crt->base = __crypto_ahash_cast(tfm);
+
+ return 0;
+}
+
+static int crypto_init_hash_ops_sync(struct crypto_tfm *tfm)
{
struct hash_tfm *crt = &tfm->crt_hash;
struct hash_alg *alg = &tfm->__crt_alg->cra_hash;
- if (alg->digestsize > crypto_tfm_alg_blocksize(tfm))
- return -EINVAL;
-
- crt->init = alg->init;
- crt->update = alg->update;
- crt->final = alg->final;
- crt->digest = alg->digest;
- crt->setkey = hash_setkey;
+ crt->init = alg->init;
+ crt->update = alg->update;
+ crt->final = alg->final;
+ crt->digest = alg->digest;
+ crt->setkey = hash_setkey;
crt->digestsize = alg->digestsize;
return 0;
}
+static int crypto_init_hash_ops(struct crypto_tfm *tfm, u32 type, u32 mask)
+{
+ struct hash_alg *alg = &tfm->__crt_alg->cra_hash;
+
+ if (alg->digestsize > crypto_tfm_alg_blocksize(tfm))
+ return -EINVAL;
+
+ if ((mask & CRYPTO_ALG_TYPE_HASH_MASK) != CRYPTO_ALG_TYPE_HASH_MASK)
+ return crypto_init_hash_ops_async(tfm);
+ else
+ return crypto_init_hash_ops_sync(tfm);
+}
+
static void crypto_hash_show(struct seq_file *m, struct crypto_alg *alg)
__attribute__ ((unused));
static void crypto_hash_show(struct seq_file *m, struct crypto_alg *alg)
diff --git a/crypto/internal.h b/crypto/internal.h
index 32f4c21..683fcb2 100644
--- a/crypto/internal.h
+++ b/crypto/internal.h
@@ -86,6 +86,7 @@ struct crypto_alg *__crypto_alg_lookup(const char *name, u32 type, u32 mask);
struct crypto_alg *crypto_alg_mod_lookup(const char *name, u32 type, u32 mask);
int crypto_init_digest_ops(struct crypto_tfm *tfm);
+int crypto_init_digest_ops_async(struct crypto_tfm *tfm);
int crypto_init_cipher_ops(struct crypto_tfm *tfm);
int crypto_init_compress_ops(struct crypto_tfm *tfm);
diff --git a/crypto/tcrypt.c b/crypto/tcrypt.c
index 6beabc5..82919f9 100644
--- a/crypto/tcrypt.c
+++ b/crypto/tcrypt.c
@@ -110,22 +110,30 @@ static void test_hash(char *algo, struct hash_testvec *template,
unsigned int i, j, k, temp;
struct scatterlist sg[8];
char result[64];
- struct crypto_hash *tfm;
- struct hash_desc desc;
+ struct crypto_ahash *tfm;
+ struct ahash_request *req;
+ struct tcrypt_result tresult;
int ret;
void *hash_buff;
printk("\ntesting %s\n", algo);
- tfm = crypto_alloc_hash(algo, 0, CRYPTO_ALG_ASYNC);
+ init_completion(&tresult.completion);
+
+ tfm = crypto_alloc_ahash(algo, 0, 0);
if (IS_ERR(tfm)) {
printk("failed to load transform for %s: %ld\n", algo,
PTR_ERR(tfm));
return;
}
- desc.tfm = tfm;
- desc.flags = 0;
+ req = ahash_request_alloc(tfm, GFP_KERNEL);
+ if (!req) {
+ printk(KERN_ERR "failed to allocate request for %s\n", algo);
+ goto out_noreq;
+ }
+ ahash_request_set_callback(req, CRYPTO_TFM_REQ_MAY_BACKLOG,
+ tcrypt_complete, &tresult);
for (i = 0; i < tcount; i++) {
printk("test %u:\n", i + 1);
@@ -139,8 +147,9 @@ static void test_hash(char *algo, struct hash_testvec *template,
sg_init_one(&sg[0], hash_buff, template[i].psize);
if (template[i].ksize) {
- ret = crypto_hash_setkey(tfm, template[i].key,
- template[i].ksize);
+ crypto_ahash_clear_flags(tfm, ~0);
+ ret = crypto_ahash_setkey(tfm, template[i].key,
+ template[i].ksize);
if (ret) {
printk("setkey() failed ret=%d\n", ret);
kfree(hash_buff);
@@ -148,17 +157,30 @@ static void test_hash(char *algo, struct hash_testvec *template,
}
}
- ret = crypto_hash_digest(&desc, sg, template[i].psize, result);
- if (ret) {
+ ahash_request_set_crypt(req, sg, result, template[i].psize);
+ ret = crypto_ahash_digest(req);
+ switch (ret) {
+ case 0:
+ break;
+ case -EINPROGRESS:
+ case -EBUSY:
+ ret = wait_for_completion_interruptible(
+ &tresult.completion);
+ if (!ret && !(ret = tresult.err)) {
+ INIT_COMPLETION(tresult.completion);
+ break;
+ }
+ /* fall through */
+ default:
printk("digest () failed ret=%d\n", ret);
kfree(hash_buff);
goto out;
}
- hexdump(result, crypto_hash_digestsize(tfm));
+ hexdump(result, crypto_ahash_digestsize(tfm));
printk("%s\n",
memcmp(result, template[i].digest,
- crypto_hash_digestsize(tfm)) ?
+ crypto_ahash_digestsize(tfm)) ?
"fail" : "pass");
kfree(hash_buff);
}
@@ -187,8 +209,9 @@ static void test_hash(char *algo, struct hash_testvec *template,
}
if (template[i].ksize) {
- ret = crypto_hash_setkey(tfm, template[i].key,
- template[i].ksize);
+ crypto_ahash_clear_flags(tfm, ~0);
+ ret = crypto_ahash_setkey(tfm, template[i].key,
+ template[i].ksize);
if (ret) {
printk("setkey() failed ret=%d\n", ret);
@@ -196,23 +219,38 @@ static void test_hash(char *algo, struct hash_testvec *template,
}
}
- ret = crypto_hash_digest(&desc, sg, template[i].psize,
- result);
- if (ret) {
+ ahash_request_set_crypt(req, sg, result,
+ template[i].psize);
+ ret = crypto_ahash_digest(req);
+ switch (ret) {
+ case 0:
+ break;
+ case -EINPROGRESS:
+ case -EBUSY:
+ ret = wait_for_completion_interruptible(
+ &tresult.completion);
+ if (!ret && !(ret = tresult.err)) {
+ INIT_COMPLETION(tresult.completion);
+ break;
+ }
+ /* fall through */
+ default:
printk("digest () failed ret=%d\n", ret);
goto out;
}
- hexdump(result, crypto_hash_digestsize(tfm));
+ hexdump(result, crypto_ahash_digestsize(tfm));
printk("%s\n",
memcmp(result, template[i].digest,
- crypto_hash_digestsize(tfm)) ?
+ crypto_ahash_digestsize(tfm)) ?
"fail" : "pass");
}
}
out:
- crypto_free_hash(tfm);
+ ahash_request_free(req);
+out_noreq:
+ crypto_free_ahash(tfm);
}
static void test_aead(char *algo, int enc, struct aead_testvec *template,
diff --git a/include/crypto/algapi.h b/include/crypto/algapi.h
index 60d06e7..fef272a 100644
--- a/include/crypto/algapi.h
+++ b/include/crypto/algapi.h
@@ -98,6 +98,7 @@ extern const struct crypto_type crypto_ablkcipher_type;
extern const struct crypto_type crypto_aead_type;
extern const struct crypto_type crypto_blkcipher_type;
extern const struct crypto_type crypto_hash_type;
+extern const struct crypto_type crypto_ahash_type;
void crypto_mod_put(struct crypto_alg *alg);
@@ -314,5 +315,40 @@ static inline int crypto_requires_sync(u32 type, u32 mask)
return (type ^ CRYPTO_ALG_ASYNC) & mask & CRYPTO_ALG_ASYNC;
}
+static inline void *crypto_ahash_ctx(struct crypto_ahash *tfm)
+{
+ return crypto_tfm_ctx(&tfm->base);
+}
+
+static inline struct ahash_alg *crypto_ahash_alg(
+ struct crypto_ahash *tfm)
+{
+ return &crypto_ahash_tfm(tfm)->__crt_alg->cra_ahash;
+}
+
+static inline int ahash_enqueue_request(struct crypto_queue *queue,
+ struct ahash_request *request)
+{
+ return crypto_enqueue_request(queue, &request->base);
+}
+
+static inline struct ahash_request *ahash_dequeue_request(
+ struct crypto_queue *queue)
+{
+ return ahash_request_cast(crypto_dequeue_request(queue));
+}
+
+static inline void *ahash_request_ctx(struct ahash_request *req)
+{
+ return req->__ctx;
+}
+
+static inline int ahash_tfm_in_queue(struct crypto_queue *queue,
+ struct crypto_ahash *tfm)
+{
+ return crypto_tfm_in_queue(queue, crypto_ahash_tfm(tfm));
+}
+
+
#endif /* _CRYPTO_ALGAPI_H */
diff --git a/include/linux/crypto.h b/include/linux/crypto.h
index 425824b..2446428 100644
--- a/include/linux/crypto.h
+++ b/include/linux/crypto.h
@@ -30,15 +30,17 @@
*/
#define CRYPTO_ALG_TYPE_MASK 0x0000000f
#define CRYPTO_ALG_TYPE_CIPHER 0x00000001
-#define CRYPTO_ALG_TYPE_DIGEST 0x00000002
-#define CRYPTO_ALG_TYPE_HASH 0x00000003
+#define CRYPTO_ALG_TYPE_COMPRESS 0x00000002
+#define CRYPTO_ALG_TYPE_AEAD 0x00000003
#define CRYPTO_ALG_TYPE_BLKCIPHER 0x00000004
#define CRYPTO_ALG_TYPE_ABLKCIPHER 0x00000005
#define CRYPTO_ALG_TYPE_GIVCIPHER 0x00000006
-#define CRYPTO_ALG_TYPE_COMPRESS 0x00000008
-#define CRYPTO_ALG_TYPE_AEAD 0x00000009
+#define CRYPTO_ALG_TYPE_DIGEST 0x00000008
+#define CRYPTO_ALG_TYPE_HASH 0x00000009
+#define CRYPTO_ALG_TYPE_AHASH 0x0000000a
#define CRYPTO_ALG_TYPE_HASH_MASK 0x0000000e
+#define CRYPTO_ALG_TYPE_AHASH_MASK 0x0000000c
#define CRYPTO_ALG_TYPE_BLKCIPHER_MASK 0x0000000c
#define CRYPTO_ALG_LARVAL 0x00000010
@@ -102,6 +104,7 @@ struct crypto_async_request;
struct crypto_aead;
struct crypto_blkcipher;
struct crypto_hash;
+struct crypto_ahash;
struct crypto_tfm;
struct crypto_type;
struct aead_givcrypt_request;
@@ -131,6 +134,16 @@ struct ablkcipher_request {
void *__ctx[] CRYPTO_MINALIGN_ATTR;
};
+struct ahash_request {
+ struct crypto_async_request base;
+
+ unsigned int nbytes;
+ struct scatterlist *src;
+ u8 *result;
+
+ void *__ctx[] CRYPTO_MINALIGN_ATTR;
+};
+
/**
* struct aead_request - AEAD request
* @base: Common attributes for async crypto requests
@@ -195,6 +208,17 @@ struct ablkcipher_alg {
unsigned int ivsize;
};
+struct ahash_alg {
+ int (*init)(struct ahash_request *req);
+ int (*update)(struct ahash_request *req);
+ int (*final)(struct ahash_request *req);
+ int (*digest)(struct ahash_request *req);
+ int (*setkey)(struct crypto_ahash *tfm, const u8 *key,
+ unsigned int keylen);
+
+ unsigned int digestsize;
+};
+
struct aead_alg {
int (*setkey)(struct crypto_aead *tfm, const u8 *key,
unsigned int keylen);
@@ -272,6 +296,7 @@ struct compress_alg {
#define cra_cipher cra_u.cipher
#define cra_digest cra_u.digest
#define cra_hash cra_u.hash
+#define cra_ahash cra_u.ahash
#define cra_compress cra_u.compress
struct crypto_alg {
@@ -298,6 +323,7 @@ struct crypto_alg {
struct cipher_alg cipher;
struct digest_alg digest;
struct hash_alg hash;
+ struct ahash_alg ahash;
struct compress_alg compress;
} cra_u;
@@ -383,6 +409,19 @@ struct hash_tfm {
unsigned int digestsize;
};
+struct ahash_tfm {
+ int (*init)(struct ahash_request *req);
+ int (*update)(struct ahash_request *req);
+ int (*final)(struct ahash_request *req);
+ int (*digest)(struct ahash_request *req);
+ int (*setkey)(struct crypto_ahash *tfm, const u8 *key,
+ unsigned int keylen);
+
+ unsigned int digestsize;
+ struct crypto_ahash *base;
+ unsigned int reqsize;
+};
+
struct compress_tfm {
int (*cot_compress)(struct crypto_tfm *tfm,
const u8 *src, unsigned int slen,
@@ -397,6 +436,7 @@ struct compress_tfm {
#define crt_blkcipher crt_u.blkcipher
#define crt_cipher crt_u.cipher
#define crt_hash crt_u.hash
+#define crt_ahash crt_u.ahash
#define crt_compress crt_u.compress
struct crypto_tfm {
@@ -409,6 +449,7 @@ struct crypto_tfm {
struct blkcipher_tfm blkcipher;
struct cipher_tfm cipher;
struct hash_tfm hash;
+ struct ahash_tfm ahash;
struct compress_tfm compress;
} crt_u;
@@ -441,6 +482,10 @@ struct crypto_hash {
struct crypto_tfm base;
};
+struct crypto_ahash {
+ struct crypto_tfm base;
+};
+
enum {
CRYPTOA_UNSPEC,
CRYPTOA_ALG,
@@ -1264,5 +1309,137 @@ static inline int crypto_comp_decompress(struct crypto_comp *tfm,
src, slen, dst, dlen);
}
+static inline struct crypto_ahash *__crypto_ahash_cast(struct crypto_tfm *tfm)
+{
+ return (struct crypto_ahash *)tfm;
+}
+
+static inline struct crypto_ahash *crypto_alloc_ahash(const char *alg_name,
+ u32 type, u32 mask)
+{
+ type &= ~CRYPTO_ALG_TYPE_MASK;
+ mask &= ~CRYPTO_ALG_TYPE_MASK;
+ type |= CRYPTO_ALG_TYPE_AHASH;
+ mask |= CRYPTO_ALG_TYPE_AHASH_MASK;
+
+ return __crypto_ahash_cast(crypto_alloc_base(alg_name, type, mask));
+}
+
+static inline struct crypto_tfm *crypto_ahash_tfm(struct crypto_ahash *tfm)
+{
+ return &tfm->base;
+}
+
+static inline void crypto_free_ahash(struct crypto_ahash *tfm)
+{
+ crypto_free_tfm(crypto_ahash_tfm(tfm));
+}
+
+static inline unsigned int crypto_ahash_alignmask(
+ struct crypto_ahash *tfm)
+{
+ return crypto_tfm_alg_alignmask(crypto_ahash_tfm(tfm));
+}
+
+static inline struct ahash_tfm *crypto_ahash_crt(struct crypto_ahash *tfm)
+{
+ return &crypto_ahash_tfm(tfm)->crt_ahash;
+}
+
+static inline unsigned int crypto_ahash_digestsize(struct crypto_ahash *tfm)
+{
+ return crypto_ahash_crt(tfm)->digestsize;
+}
+
+static inline u32 crypto_ahash_get_flags(struct crypto_ahash *tfm)
+{
+ return crypto_tfm_get_flags(crypto_ahash_tfm(tfm));
+}
+
+static inline void crypto_ahash_set_flags(struct crypto_ahash *tfm, u32 flags)
+{
+ crypto_tfm_set_flags(crypto_ahash_tfm(tfm), flags);
+}
+
+static inline void crypto_ahash_clear_flags(struct crypto_ahash *tfm, u32 flags)
+{
+ crypto_tfm_clear_flags(crypto_ahash_tfm(tfm), flags);
+}
+
+static inline struct crypto_ahash *crypto_ahash_reqtfm(
+ struct ahash_request *req)
+{
+ return __crypto_ahash_cast(req->base.tfm);
+}
+
+static inline unsigned int crypto_ahash_reqsize(struct crypto_ahash *tfm)
+{
+ return crypto_ahash_crt(tfm)->reqsize;
+}
+
+static inline int crypto_ahash_setkey(struct crypto_ahash *tfm,
+ const u8 *key, unsigned int keylen)
+{
+ struct ahash_tfm *crt = crypto_ahash_crt(tfm);
+
+ return crt->setkey(crt->base, key, keylen);
+}
+
+static inline int crypto_ahash_digest(struct ahash_request *req)
+{
+ struct ahash_tfm *crt = crypto_ahash_crt(crypto_ahash_reqtfm(req));
+ return crt->digest(req);
+}
+
+static inline void ahash_request_set_tfm(struct ahash_request *req,
+ struct crypto_ahash *tfm)
+{
+ req->base.tfm = crypto_ahash_tfm(crypto_ahash_crt(tfm)->base);
+}
+
+static inline struct ahash_request *ahash_request_alloc(
+ struct crypto_ahash *tfm, gfp_t gfp)
+{
+ struct ahash_request *req;
+
+ req = kmalloc(sizeof(struct ahash_request) +
+ crypto_ahash_reqsize(tfm), gfp);
+
+ if (likely(req))
+ ahash_request_set_tfm(req, tfm);
+
+ return req;
+}
+
+static inline void ahash_request_free(struct ahash_request *req)
+{
+ kfree(req);
+}
+
+static inline struct ahash_request *ahash_request_cast(
+ struct crypto_async_request *req)
+{
+ return container_of(req, struct ahash_request, base);
+}
+
+static inline void ahash_request_set_callback(struct ahash_request *req,
+ u32 flags,
+ crypto_completion_t complete,
+ void *data)
+{
+ req->base.complete = complete;
+ req->base.data = data;
+ req->base.flags = flags;
+}
+
+static inline void ahash_request_set_crypt(struct ahash_request *req,
+ struct scatterlist *src, u8 *result,
+ unsigned int nbytes)
+{
+ req->src = src;
+ req->nbytes = nbytes;
+ req->result = result;
+}
+
#endif /* _LINUX_CRYPTO_H */
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