#include <linux/types.h>
#include <linux/errno.h>
#include <linux/crypto.h>
+#include <linux/bitops.h>
/* The large precomputed tables for the Twofish cipher (twofish.c)
#define CALC_K(a, j, k, l, m, n) \
x = CALC_K_2 (k, l, k, l, 0); \
y = CALC_K_2 (m, n, m, n, 4); \
- y = (y << 8) + (y >> 24); \
+ y = rol32(y, 8); \
x += y; y += x; ctx->a[j] = x; \
- ctx->a[(j) + 1] = (y << 9) + (y >> 23)
+ ctx->a[(j) + 1] = rol32(y, 9)
#define CALC_K192_2(a, b, c, d, j) \
CALC_K_2 (q0[a ^ key[(j) + 16]], \
#define CALC_K192(a, j, k, l, m, n) \
x = CALC_K192_2 (l, l, k, k, 0); \
y = CALC_K192_2 (n, n, m, m, 4); \
- y = (y << 8) + (y >> 24); \
+ y = rol32(y, 8); \
x += y; y += x; ctx->a[j] = x; \
- ctx->a[(j) + 1] = (y << 9) + (y >> 23)
+ ctx->a[(j) + 1] = rol32(y, 9)
#define CALC_K256_2(a, b, j) \
CALC_K192_2 (q1[b ^ key[(j) + 24]], \
#define CALC_K256(a, j, k, l, m, n) \
x = CALC_K256_2 (k, l, 0); \
y = CALC_K256_2 (m, n, 4); \
- y = (y << 8) + (y >> 24); \
+ y = rol32(y, 8); \
x += y; y += x; ctx->a[j] = x; \
- ctx->a[(j) + 1] = (y << 9) + (y >> 23)
+ ctx->a[(j) + 1] = rol32(y, 9)
/* Macros to compute the g() function in the encryption and decryption
x = G1 (a); y = G2 (b); \
x += y; y += x + ctx->k[2 * (n) + 1]; \
(c) ^= x + ctx->k[2 * (n)]; \
- (c) = ((c) >> 1) + ((c) << 31); \
- (d) = (((d) << 1)+((d) >> 31)) ^ y
+ (c) = ror32((c), 1); \
+ (d) = rol32((d), 1) ^ y
#define DECROUND(n, a, b, c, d) \
x = G1 (a); y = G2 (b); \
x += y; y += x; \
(d) ^= y + ctx->k[2 * (n) + 1]; \
- (d) = ((d) >> 1) + ((d) << 31); \
- (c) = (((c) << 1)+((c) >> 31)); \
+ (d) = ror32((d), 1); \
+ (c) = rol32((c), 1); \
(c) ^= (x + ctx->k[2 * (n)])
/* Encryption and decryption cycles; each one is simply two Feistel rounds
};
/* Perform the key setup. */
-static int twofish_setkey(void *cx, const u8 *key,
- unsigned int key_len, u32 *flags)
+static int twofish_setkey(struct crypto_tfm *tfm, const u8 *key,
+ unsigned int key_len, u32 *flags)
{
- struct twofish_ctx *ctx = cx;
+ struct twofish_ctx *ctx = crypto_tfm_ctx(tfm);
int i, j, k;
}
/* Encrypt one block. in and out may be the same. */
-static void twofish_encrypt(void *cx, u8 *out, const u8 *in)
+static void twofish_encrypt(struct crypto_tfm *tfm, u8 *out, const u8 *in)
{
- struct twofish_ctx *ctx = cx;
+ struct twofish_ctx *ctx = crypto_tfm_ctx(tfm);
const __le32 *src = (const __le32 *)in;
__le32 *dst = (__le32 *)out;
}
/* Decrypt one block. in and out may be the same. */
-static void twofish_decrypt(void *cx, u8 *out, const u8 *in)
+static void twofish_decrypt(struct crypto_tfm *tfm, u8 *out, const u8 *in)
{
- struct twofish_ctx *ctx = cx;
+ struct twofish_ctx *ctx = crypto_tfm_ctx(tfm);
const __le32 *src = (const __le32 *)in;
__le32 *dst = (__le32 *)out;