Commit 8f467cf2 authored by Ard Biesheuvel's avatar Ard Biesheuvel Committed by Herbert Xu
Browse files

crypto: sparc/des - switch to new verification routines 



Switch to the refactored DES key verification routines. While at it,
rename the DES encrypt/decrypt routines so they will not conflict with
the DES library later on.

Signed-off-by: default avatarArd Biesheuvel <ard.biesheuvel@linaro.org>
Signed-off-by: default avatarHerbert Xu <herbert@gondor.apana.org.au>
parent 4e2c8208

arch/sparc/crypto/des_glue.c

+16 −21
Original line number Diff line number Diff line
@@ -12,7 +12,7 @@ 
#include <linux/mm.h>

#include <linux/types.h>

#include <crypto/algapi.h>

#include <crypto/des.h>

#include <crypto/internal/des.h>



#include <asm/fpumacro.h>

#include <asm/pstate.h>
@@ -45,19 +45,15 @@ static int des_set_key(struct crypto_tfm *tfm, const u8 *key, 
		       unsigned int keylen)

{

	struct des_sparc64_ctx *dctx = crypto_tfm_ctx(tfm);

	u32 *flags = &tfm->crt_flags;

	u32 tmp[DES_EXPKEY_WORDS];

	int ret;

	int err;



	/* Even though we have special instructions for key expansion,

	 * we call des_ekey() so that we don't have to write our own

	 * we call des_verify_key() so that we don't have to write our own

	 * weak key detection code.

	 */

	ret = des_ekey(tmp, key);

	if (unlikely(ret == 0) && (*flags & CRYPTO_TFM_REQ_FORBID_WEAK_KEYS)) {

		*flags |= CRYPTO_TFM_RES_WEAK_KEY;

		return -EINVAL;

	}

	err = crypto_des_verify_key(tfm, key);

	if (err)

		return err;



	des_sparc64_key_expand((const u32 *) key, &dctx->encrypt_expkey[0]);

	encrypt_to_decrypt(&dctx->decrypt_expkey[0], &dctx->encrypt_expkey[0]);
@@ -68,7 +64,7 @@ static int des_set_key(struct crypto_tfm *tfm, const u8 *key, 
extern void des_sparc64_crypt(const u64 *key, const u64 *input,

			      u64 *output);



static void des_encrypt(struct crypto_tfm *tfm, u8 *dst, const u8 *src)

static void sparc_des_encrypt(struct crypto_tfm *tfm, u8 *dst, const u8 *src)

{

	struct des_sparc64_ctx *ctx = crypto_tfm_ctx(tfm);

	const u64 *K = ctx->encrypt_expkey;
@@ -76,7 +72,7 @@ static void des_encrypt(struct crypto_tfm *tfm, u8 *dst, const u8 *src) 
	des_sparc64_crypt(K, (const u64 *) src, (u64 *) dst);

}



static void des_decrypt(struct crypto_tfm *tfm, u8 *dst, const u8 *src)

static void sparc_des_decrypt(struct crypto_tfm *tfm, u8 *dst, const u8 *src)

{

	struct des_sparc64_ctx *ctx = crypto_tfm_ctx(tfm);

	const u64 *K = ctx->decrypt_expkey;
@@ -202,14 +198,13 @@ static int des3_ede_set_key(struct crypto_tfm *tfm, const u8 *key, 
			    unsigned int keylen)

{

	struct des3_ede_sparc64_ctx *dctx = crypto_tfm_ctx(tfm);

	u32 *flags = &tfm->crt_flags;

	u64 k1[DES_EXPKEY_WORDS / 2];

	u64 k2[DES_EXPKEY_WORDS / 2];

	u64 k3[DES_EXPKEY_WORDS / 2];

	int err;



	err = __des3_verify_key(flags, key);

	if (unlikely(err))

	err = crypto_des3_ede_verify_key(tfm, key);

	if (err)

		return err;



	des_sparc64_key_expand((const u32 *)key, k1);
@@ -235,7 +230,7 @@ static int des3_ede_set_key(struct crypto_tfm *tfm, const u8 *key, 
extern void des3_ede_sparc64_crypt(const u64 *key, const u64 *input,

				   u64 *output);



static void des3_ede_encrypt(struct crypto_tfm *tfm, u8 *dst, const u8 *src)

static void sparc_des3_ede_encrypt(struct crypto_tfm *tfm, u8 *dst, const u8 *src)

{

	struct des3_ede_sparc64_ctx *ctx = crypto_tfm_ctx(tfm);

	const u64 *K = ctx->encrypt_expkey;
@@ -243,7 +238,7 @@ static void des3_ede_encrypt(struct crypto_tfm *tfm, u8 *dst, const u8 *src) 
	des3_ede_sparc64_crypt(K, (const u64 *) src, (u64 *) dst);

}



static void des3_ede_decrypt(struct crypto_tfm *tfm, u8 *dst, const u8 *src)

static void sparc_des3_ede_decrypt(struct crypto_tfm *tfm, u8 *dst, const u8 *src)

{

	struct des3_ede_sparc64_ctx *ctx = crypto_tfm_ctx(tfm);

	const u64 *K = ctx->decrypt_expkey;
@@ -390,8 +385,8 @@ static struct crypto_alg algs[] = { { 
			.cia_min_keysize	= DES_KEY_SIZE,

			.cia_max_keysize	= DES_KEY_SIZE,

			.cia_setkey		= des_set_key,

			.cia_encrypt		= des_encrypt,

			.cia_decrypt		= des_decrypt

			.cia_encrypt		= sparc_des_encrypt,

			.cia_decrypt		= sparc_des_decrypt

		}

	}

}, {
@@ -447,8 +442,8 @@ static struct crypto_alg algs[] = { { 
			.cia_min_keysize	= DES3_EDE_KEY_SIZE,

			.cia_max_keysize	= DES3_EDE_KEY_SIZE,

			.cia_setkey		= des3_ede_set_key,

			.cia_encrypt		= des3_ede_encrypt,

			.cia_decrypt		= des3_ede_decrypt

			.cia_encrypt		= sparc_des3_ede_encrypt,

			.cia_decrypt		= sparc_des3_ede_decrypt

		}

	}

}, {

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