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crypto: wp512 - Switch to shash
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This patch changes wp512, wp384 and wp256 to the new shash interface.

Signed-off-by: Adrian-Ken Rueegsegger <ken@codelabs.ch>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
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Adrian-Ken Rueegsegger authored and Herbert Xu committed Dec 25, 2008
1 parent f63fbd3 commit 4946510
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Showing 2 changed files with 66 additions and 57 deletions.
2 changes: 1 addition & 1 deletion crypto/Kconfig
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Original file line number Diff line number Diff line change
Expand Up @@ -394,7 +394,7 @@ config CRYPTO_TGR192

config CRYPTO_WP512
tristate "Whirlpool digest algorithms"
select CRYPTO_ALGAPI
select CRYPTO_HASH
help
Whirlpool hash algorithm 512, 384 and 256-bit hashes

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121 changes: 65 additions & 56 deletions crypto/wp512.c
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Original file line number Diff line number Diff line change
Expand Up @@ -19,11 +19,11 @@
* (at your option) any later version.
*
*/
#include <crypto/internal/hash.h>
#include <linux/init.h>
#include <linux/module.h>
#include <linux/mm.h>
#include <asm/byteorder.h>
#include <linux/crypto.h>
#include <linux/types.h>

#define WP512_DIGEST_SIZE 64
Expand Down Expand Up @@ -980,8 +980,8 @@ static void wp512_process_buffer(struct wp512_ctx *wctx) {

}

static void wp512_init(struct crypto_tfm *tfm) {
struct wp512_ctx *wctx = crypto_tfm_ctx(tfm);
static int wp512_init(struct shash_desc *desc) {
struct wp512_ctx *wctx = shash_desc_ctx(desc);
int i;

memset(wctx->bitLength, 0, 32);
Expand All @@ -990,12 +990,14 @@ static void wp512_init(struct crypto_tfm *tfm) {
for (i = 0; i < 8; i++) {
wctx->hash[i] = 0L;
}

return 0;
}

static void wp512_update(struct crypto_tfm *tfm, const u8 *source,
static int wp512_update(struct shash_desc *desc, const u8 *source,
unsigned int len)
{
struct wp512_ctx *wctx = crypto_tfm_ctx(tfm);
struct wp512_ctx *wctx = shash_desc_ctx(desc);
int sourcePos = 0;
unsigned int bits_len = len * 8; // convert to number of bits
int sourceGap = (8 - ((int)bits_len & 7)) & 7;
Expand Down Expand Up @@ -1051,11 +1053,12 @@ static void wp512_update(struct crypto_tfm *tfm, const u8 *source,
wctx->bufferBits = bufferBits;
wctx->bufferPos = bufferPos;

return 0;
}

static void wp512_final(struct crypto_tfm *tfm, u8 *out)
static int wp512_final(struct shash_desc *desc, u8 *out)
{
struct wp512_ctx *wctx = crypto_tfm_ctx(tfm);
struct wp512_ctx *wctx = shash_desc_ctx(desc);
int i;
u8 *buffer = wctx->buffer;
u8 *bitLength = wctx->bitLength;
Expand Down Expand Up @@ -1084,99 +1087,105 @@ static void wp512_final(struct crypto_tfm *tfm, u8 *out)
digest[i] = cpu_to_be64(wctx->hash[i]);
wctx->bufferBits = bufferBits;
wctx->bufferPos = bufferPos;

return 0;
}

static void wp384_final(struct crypto_tfm *tfm, u8 *out)
static int wp384_final(struct shash_desc *desc, u8 *out)
{
u8 D[64];

wp512_final(tfm, D);
wp512_final(desc, D);
memcpy (out, D, WP384_DIGEST_SIZE);
memset (D, 0, WP512_DIGEST_SIZE);

return 0;
}

static void wp256_final(struct crypto_tfm *tfm, u8 *out)
static int wp256_final(struct shash_desc *desc, u8 *out)
{
u8 D[64];

wp512_final(tfm, D);
wp512_final(desc, D);
memcpy (out, D, WP256_DIGEST_SIZE);
memset (D, 0, WP512_DIGEST_SIZE);

return 0;
}

static struct crypto_alg wp512 = {
.cra_name = "wp512",
.cra_flags = CRYPTO_ALG_TYPE_DIGEST,
.cra_blocksize = WP512_BLOCK_SIZE,
.cra_ctxsize = sizeof(struct wp512_ctx),
.cra_module = THIS_MODULE,
.cra_list = LIST_HEAD_INIT(wp512.cra_list),
.cra_u = { .digest = {
.dia_digestsize = WP512_DIGEST_SIZE,
.dia_init = wp512_init,
.dia_update = wp512_update,
.dia_final = wp512_final } }
static struct shash_alg wp512 = {
.digestsize = WP512_DIGEST_SIZE,
.init = wp512_init,
.update = wp512_update,
.final = wp512_final,
.descsize = sizeof(struct wp512_ctx),
.base = {
.cra_name = "wp512",
.cra_flags = CRYPTO_ALG_TYPE_SHASH,
.cra_blocksize = WP512_BLOCK_SIZE,
.cra_module = THIS_MODULE,
}
};

static struct crypto_alg wp384 = {
.cra_name = "wp384",
.cra_flags = CRYPTO_ALG_TYPE_DIGEST,
.cra_blocksize = WP512_BLOCK_SIZE,
.cra_ctxsize = sizeof(struct wp512_ctx),
.cra_module = THIS_MODULE,
.cra_list = LIST_HEAD_INIT(wp384.cra_list),
.cra_u = { .digest = {
.dia_digestsize = WP384_DIGEST_SIZE,
.dia_init = wp512_init,
.dia_update = wp512_update,
.dia_final = wp384_final } }
static struct shash_alg wp384 = {
.digestsize = WP384_DIGEST_SIZE,
.init = wp512_init,
.update = wp512_update,
.final = wp384_final,
.descsize = sizeof(struct wp512_ctx),
.base = {
.cra_name = "wp384",
.cra_flags = CRYPTO_ALG_TYPE_SHASH,
.cra_blocksize = WP512_BLOCK_SIZE,
.cra_module = THIS_MODULE,
}
};

static struct crypto_alg wp256 = {
.cra_name = "wp256",
.cra_flags = CRYPTO_ALG_TYPE_DIGEST,
.cra_blocksize = WP512_BLOCK_SIZE,
.cra_ctxsize = sizeof(struct wp512_ctx),
.cra_module = THIS_MODULE,
.cra_list = LIST_HEAD_INIT(wp256.cra_list),
.cra_u = { .digest = {
.dia_digestsize = WP256_DIGEST_SIZE,
.dia_init = wp512_init,
.dia_update = wp512_update,
.dia_final = wp256_final } }
static struct shash_alg wp256 = {
.digestsize = WP256_DIGEST_SIZE,
.init = wp512_init,
.update = wp512_update,
.final = wp256_final,
.descsize = sizeof(struct wp512_ctx),
.base = {
.cra_name = "wp256",
.cra_flags = CRYPTO_ALG_TYPE_SHASH,
.cra_blocksize = WP512_BLOCK_SIZE,
.cra_module = THIS_MODULE,
}
};

static int __init wp512_mod_init(void)
{
int ret = 0;

ret = crypto_register_alg(&wp512);
ret = crypto_register_shash(&wp512);

if (ret < 0)
goto out;

ret = crypto_register_alg(&wp384);
ret = crypto_register_shash(&wp384);
if (ret < 0)
{
crypto_unregister_alg(&wp512);
crypto_unregister_shash(&wp512);
goto out;
}

ret = crypto_register_alg(&wp256);
ret = crypto_register_shash(&wp256);
if (ret < 0)
{
crypto_unregister_alg(&wp512);
crypto_unregister_alg(&wp384);
crypto_unregister_shash(&wp512);
crypto_unregister_shash(&wp384);
}
out:
return ret;
}

static void __exit wp512_mod_fini(void)
{
crypto_unregister_alg(&wp512);
crypto_unregister_alg(&wp384);
crypto_unregister_alg(&wp256);
crypto_unregister_shash(&wp512);
crypto_unregister_shash(&wp384);
crypto_unregister_shash(&wp256);
}

MODULE_ALIAS("wp384");
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