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-rw-r--r--crypto/camellia.c79
1 files changed, 41 insertions, 38 deletions
diff --git a/crypto/camellia.c b/crypto/camellia.c
index f07a19b3caad..f7aaaaf86982 100644
--- a/crypto/camellia.c
+++ b/crypto/camellia.c
@@ -337,43 +337,40 @@ static const u32 camellia_sp4404[256] = {
/*
* macros
*/
-#define ROLDQ(ll, lr, rl, rr, w0, w1, bits) \
- do { \
+#define ROLDQ(ll, lr, rl, rr, w0, w1, bits) ({ \
w0 = ll; \
ll = (ll << bits) + (lr >> (32 - bits)); \
lr = (lr << bits) + (rl >> (32 - bits)); \
rl = (rl << bits) + (rr >> (32 - bits)); \
rr = (rr << bits) + (w0 >> (32 - bits)); \
- } while (0)
+})
-#define ROLDQo32(ll, lr, rl, rr, w0, w1, bits) \
- do { \
+#define ROLDQo32(ll, lr, rl, rr, w0, w1, bits) ({ \
w0 = ll; \
w1 = lr; \
ll = (lr << (bits - 32)) + (rl >> (64 - bits)); \
lr = (rl << (bits - 32)) + (rr >> (64 - bits)); \
rl = (rr << (bits - 32)) + (w0 >> (64 - bits)); \
rr = (w0 << (bits - 32)) + (w1 >> (64 - bits)); \
- } while (0)
+})
-#define CAMELLIA_F(xl, xr, kl, kr, yl, yr, il, ir, t0, t1) \
- do { \
+#define CAMELLIA_F(xl, xr, kl, kr, yl, yr, il, ir, t0, t1) ({ \
il = xl ^ kl; \
ir = xr ^ kr; \
t0 = il >> 16; \
t1 = ir >> 16; \
- yl = camellia_sp1110[(u8)(ir )] \
- ^ camellia_sp0222[ (t1 >> 8)] \
- ^ camellia_sp3033[(u8)(t1 )] \
+ yl = camellia_sp1110[(u8)(ir)] \
+ ^ camellia_sp0222[(u8)(t1 >> 8)] \
+ ^ camellia_sp3033[(u8)(t1)] \
^ camellia_sp4404[(u8)(ir >> 8)]; \
- yr = camellia_sp1110[ (t0 >> 8)] \
- ^ camellia_sp0222[(u8)(t0 )] \
+ yr = camellia_sp1110[(u8)(t0 >> 8)] \
+ ^ camellia_sp0222[(u8)(t0)] \
^ camellia_sp3033[(u8)(il >> 8)] \
- ^ camellia_sp4404[(u8)(il )]; \
+ ^ camellia_sp4404[(u8)(il)]; \
yl ^= yr; \
yr = ror32(yr, 8); \
yr ^= yl; \
- } while (0)
+})
#define SUBKEY_L(INDEX) (subkey[(INDEX)*2])
#define SUBKEY_R(INDEX) (subkey[(INDEX)*2 + 1])
@@ -832,8 +829,7 @@ static void camellia_setup192(const unsigned char *key, u32 *subkey)
/*
* Encrypt/decrypt
*/
-#define CAMELLIA_FLS(ll, lr, rl, rr, kll, klr, krl, krr, t0, t1, t2, t3) \
- do { \
+#define CAMELLIA_FLS(ll, lr, rl, rr, kll, klr, krl, krr, t0, t1, t2, t3) ({ \
t0 = kll; \
t2 = krr; \
t0 &= ll; \
@@ -846,15 +842,14 @@ static void camellia_setup192(const unsigned char *key, u32 *subkey)
t1 |= lr; \
ll ^= t1; \
rr ^= rol32(t3, 1); \
- } while (0)
+})
-#define CAMELLIA_ROUNDSM(xl, xr, kl, kr, yl, yr, il, ir) \
- do { \
+#define CAMELLIA_ROUNDSM(xl, xr, kl, kr, yl, yr, il, ir) ({ \
yl ^= kl; \
yr ^= kr; \
ir = camellia_sp1110[(u8)xr]; \
- il = camellia_sp1110[ (xl >> 24)]; \
- ir ^= camellia_sp0222[ (xr >> 24)]; \
+ il = camellia_sp1110[(u8)(xl >> 24)]; \
+ ir ^= camellia_sp0222[(u8)(xr >> 24)]; \
il ^= camellia_sp0222[(u8)(xl >> 16)]; \
ir ^= camellia_sp3033[(u8)(xr >> 16)]; \
il ^= camellia_sp3033[(u8)(xl >> 8)]; \
@@ -862,8 +857,8 @@ static void camellia_setup192(const unsigned char *key, u32 *subkey)
il ^= camellia_sp4404[(u8)xl]; \
ir ^= il; \
yl ^= ir; \
- yr ^= ror32(il, 8) ^ ir; \
- } while (0)
+ yr ^= ror32(il, 8) ^ ir; \
+})
/* max = 24: 128bit encrypt, max = 32: 256bit encrypt */
static void camellia_do_encrypt(const u32 *subkey, u32 *io, unsigned max)
@@ -875,7 +870,7 @@ static void camellia_do_encrypt(const u32 *subkey, u32 *io, unsigned max)
io[1] ^= SUBKEY_R(0);
/* main iteration */
-#define ROUNDS(i) do { \
+#define ROUNDS(i) ({ \
CAMELLIA_ROUNDSM(io[0], io[1], \
SUBKEY_L(i + 2), SUBKEY_R(i + 2), \
io[2], io[3], il, ir); \
@@ -894,13 +889,13 @@ static void camellia_do_encrypt(const u32 *subkey, u32 *io, unsigned max)
CAMELLIA_ROUNDSM(io[2], io[3], \
SUBKEY_L(i + 7), SUBKEY_R(i + 7), \
io[0], io[1], il, ir); \
-} while (0)
-#define FLS(i) do { \
+})
+#define FLS(i) ({ \
CAMELLIA_FLS(io[0], io[1], io[2], io[3], \
SUBKEY_L(i + 0), SUBKEY_R(i + 0), \
SUBKEY_L(i + 1), SUBKEY_R(i + 1), \
t0, t1, il, ir); \
-} while (0)
+})
ROUNDS(0);
FLS(8);
@@ -930,7 +925,7 @@ static void camellia_do_decrypt(const u32 *subkey, u32 *io, unsigned i)
io[1] ^= SUBKEY_R(i);
/* main iteration */
-#define ROUNDS(i) do { \
+#define ROUNDS(i) ({ \
CAMELLIA_ROUNDSM(io[0], io[1], \
SUBKEY_L(i + 7), SUBKEY_R(i + 7), \
io[2], io[3], il, ir); \
@@ -949,13 +944,13 @@ static void camellia_do_decrypt(const u32 *subkey, u32 *io, unsigned i)
CAMELLIA_ROUNDSM(io[2], io[3], \
SUBKEY_L(i + 2), SUBKEY_R(i + 2), \
io[0], io[1], il, ir); \
-} while (0)
-#define FLS(i) do { \
+})
+#define FLS(i) ({ \
CAMELLIA_FLS(io[0], io[1], io[2], io[3], \
SUBKEY_L(i + 1), SUBKEY_R(i + 1), \
SUBKEY_L(i + 0), SUBKEY_R(i + 0), \
t0, t1, il, ir); \
-} while (0)
+})
if (i == 32) {
ROUNDS(24);
@@ -1017,6 +1012,7 @@ static void camellia_encrypt(struct crypto_tfm *tfm, u8 *out, const u8 *in)
const struct camellia_ctx *cctx = crypto_tfm_ctx(tfm);
const __be32 *src = (const __be32 *)in;
__be32 *dst = (__be32 *)out;
+ unsigned int max;
u32 tmp[4];
@@ -1025,9 +1021,12 @@ static void camellia_encrypt(struct crypto_tfm *tfm, u8 *out, const u8 *in)
tmp[2] = be32_to_cpu(src[2]);
tmp[3] = be32_to_cpu(src[3]);
- camellia_do_encrypt(cctx->key_table, tmp,
- cctx->key_length == 16 ? 24 : 32 /* for key lengths of 24 and 32 */
- );
+ if (cctx->key_length == 16)
+ max = 24;
+ else
+ max = 32; /* for key lengths of 24 and 32 */
+
+ camellia_do_encrypt(cctx->key_table, tmp, max);
/* do_encrypt returns 0,1 swapped with 2,3 */
dst[0] = cpu_to_be32(tmp[2]);
@@ -1041,6 +1040,7 @@ static void camellia_decrypt(struct crypto_tfm *tfm, u8 *out, const u8 *in)
const struct camellia_ctx *cctx = crypto_tfm_ctx(tfm);
const __be32 *src = (const __be32 *)in;
__be32 *dst = (__be32 *)out;
+ unsigned int max;
u32 tmp[4];
@@ -1049,9 +1049,12 @@ static void camellia_decrypt(struct crypto_tfm *tfm, u8 *out, const u8 *in)
tmp[2] = be32_to_cpu(src[2]);
tmp[3] = be32_to_cpu(src[3]);
- camellia_do_decrypt(cctx->key_table, tmp,
- cctx->key_length == 16 ? 24 : 32 /* for key lengths of 24 and 32 */
- );
+ if (cctx->key_length == 16)
+ max = 24;
+ else
+ max = 32; /* for key lengths of 24 and 32 */
+
+ camellia_do_decrypt(cctx->key_table, tmp, max);
/* do_decrypt returns 0,1 swapped with 2,3 */
dst[0] = cpu_to_be32(tmp[2]);
generated by cgit v1.2.3 (git 2.39.1) at 2024-11-11 22:22:28 +0000