diff options
-rw-r--r-- | crypto/xts.c | 13 |
1 files changed, 6 insertions, 7 deletions
diff --git a/crypto/xts.c b/crypto/xts.c index 8eb08bfaf7c0..d87b0f3102c3 100644 --- a/crypto/xts.c +++ b/crypto/xts.c | |||
@@ -77,16 +77,16 @@ static int setkey(struct crypto_tfm *parent, const u8 *key, | |||
77 | } | 77 | } |
78 | 78 | ||
79 | struct sinfo { | 79 | struct sinfo { |
80 | be128 t; | 80 | be128 *t; |
81 | struct crypto_tfm *tfm; | 81 | struct crypto_tfm *tfm; |
82 | void (*fn)(struct crypto_tfm *, u8 *, const u8 *); | 82 | void (*fn)(struct crypto_tfm *, u8 *, const u8 *); |
83 | }; | 83 | }; |
84 | 84 | ||
85 | static inline void xts_round(struct sinfo *s, void *dst, const void *src) | 85 | static inline void xts_round(struct sinfo *s, void *dst, const void *src) |
86 | { | 86 | { |
87 | be128_xor(dst, &s->t, src); /* PP <- T xor P */ | 87 | be128_xor(dst, s->t, src); /* PP <- T xor P */ |
88 | s->fn(s->tfm, dst, dst); /* CC <- E(Key1,PP) */ | 88 | s->fn(s->tfm, dst, dst); /* CC <- E(Key1,PP) */ |
89 | be128_xor(dst, dst, &s->t); /* C <- T xor CC */ | 89 | be128_xor(dst, dst, s->t); /* C <- T xor CC */ |
90 | } | 90 | } |
91 | 91 | ||
92 | static int crypt(struct blkcipher_desc *d, | 92 | static int crypt(struct blkcipher_desc *d, |
@@ -101,7 +101,6 @@ static int crypt(struct blkcipher_desc *d, | |||
101 | .tfm = crypto_cipher_tfm(ctx->child), | 101 | .tfm = crypto_cipher_tfm(ctx->child), |
102 | .fn = fn | 102 | .fn = fn |
103 | }; | 103 | }; |
104 | be128 *iv; | ||
105 | u8 *wsrc; | 104 | u8 *wsrc; |
106 | u8 *wdst; | 105 | u8 *wdst; |
107 | 106 | ||
@@ -109,20 +108,20 @@ static int crypt(struct blkcipher_desc *d, | |||
109 | if (!w->nbytes) | 108 | if (!w->nbytes) |
110 | return err; | 109 | return err; |
111 | 110 | ||
111 | s.t = (be128 *)w->iv; | ||
112 | avail = w->nbytes; | 112 | avail = w->nbytes; |
113 | 113 | ||
114 | wsrc = w->src.virt.addr; | 114 | wsrc = w->src.virt.addr; |
115 | wdst = w->dst.virt.addr; | 115 | wdst = w->dst.virt.addr; |
116 | 116 | ||
117 | /* calculate first value of T */ | 117 | /* calculate first value of T */ |
118 | iv = (be128 *)w->iv; | 118 | tw(crypto_cipher_tfm(ctx->tweak), w->iv, w->iv); |
119 | tw(crypto_cipher_tfm(ctx->tweak), (void *)&s.t, w->iv); | ||
120 | 119 | ||
121 | goto first; | 120 | goto first; |
122 | 121 | ||
123 | for (;;) { | 122 | for (;;) { |
124 | do { | 123 | do { |
125 | gf128mul_x_ble(&s.t, &s.t); | 124 | gf128mul_x_ble(s.t, s.t); |
126 | 125 | ||
127 | first: | 126 | first: |
128 | xts_round(&s, wdst, wsrc); | 127 | xts_round(&s, wdst, wsrc); |