Fedora kernel-2.6.17-1.2142_FC4 patched with stable patch-2.6.17.4-vs2.0.2-rc26.diff

[linux-2.6.git] / crypto / aes.c

diff --git a/crypto/aes.c b/crypto/aes.c
index d0dd7c3..a501729 100644 (file)
--- a/crypto/aes.c
+++ b/crypto/aes.c
@@ -67,23 +67,19 @@
 /*
  * #define byte(x, nr) ((unsigned char)((x) >> (nr*8))) 
  */
-inline static u8
+static inline u8
 byte(const u32 x, const unsigned n)
 {
        return x >> (n << 3);
 }
 
-#define u32_in(x) le32_to_cpu(*(const u32 *)(x))
-#define u32_out(to, from) (*(u32 *)(to) = cpu_to_le32(from))
-
 struct aes_ctx {
        int key_length;
-       u32 E[60];
-       u32 D[60];
+       u32 buf[120];
 };
 
-#define E_KEY ctx->E
-#define D_KEY ctx->D
+#define E_KEY (&ctx->buf[0])
+#define D_KEY (&ctx->buf[60])
 
 static u8 pow_tab[256] __initdata;
 static u8 log_tab[256] __initdata;
@@ -256,6 +252,7 @@ static int
 aes_set_key(void *ctx_arg, const u8 *in_key, unsigned int key_len, u32 *flags)
 {
        struct aes_ctx *ctx = ctx_arg;
+       const __le32 *key = (const __le32 *)in_key;
        u32 i, t, u, v, w;
 
        if (key_len != 16 && key_len != 24 && key_len != 32) {
@@ -265,10 +262,10 @@ aes_set_key(void *ctx_arg, const u8 *in_key, unsigned int key_len, u32 *flags)
 
        ctx->key_length = key_len;
 
-       E_KEY[0] = u32_in (in_key);
-       E_KEY[1] = u32_in (in_key + 4);
-       E_KEY[2] = u32_in (in_key + 8);
-       E_KEY[3] = u32_in (in_key + 12);
+       E_KEY[0] = le32_to_cpu(key[0]);
+       E_KEY[1] = le32_to_cpu(key[1]);
+       E_KEY[2] = le32_to_cpu(key[2]);
+       E_KEY[3] = le32_to_cpu(key[3]);
 
        switch (key_len) {
        case 16:
@@ -278,17 +275,17 @@ aes_set_key(void *ctx_arg, const u8 *in_key, unsigned int key_len, u32 *flags)
                break;
 
        case 24:
-               E_KEY[4] = u32_in (in_key + 16);
-               t = E_KEY[5] = u32_in (in_key + 20);
+               E_KEY[4] = le32_to_cpu(key[4]);
+               t = E_KEY[5] = le32_to_cpu(key[5]);
                for (i = 0; i < 8; ++i)
                        loop6 (i);
                break;
 
        case 32:
-               E_KEY[4] = u32_in (in_key + 16);
-               E_KEY[5] = u32_in (in_key + 20);
-               E_KEY[6] = u32_in (in_key + 24);
-               t = E_KEY[7] = u32_in (in_key + 28);
+               E_KEY[4] = le32_to_cpu(key[4]);
+               E_KEY[5] = le32_to_cpu(key[5]);
+               E_KEY[6] = le32_to_cpu(key[6]);
+               t = E_KEY[7] = le32_to_cpu(key[7]);
                for (i = 0; i < 7; ++i)
                        loop8 (i);
                break;
@@ -324,13 +321,15 @@ aes_set_key(void *ctx_arg, const u8 *in_key, unsigned int key_len, u32 *flags)
 static void aes_encrypt(void *ctx_arg, u8 *out, const u8 *in)
 {
        const struct aes_ctx *ctx = ctx_arg;
+       const __le32 *src = (const __le32 *)in;
+       __le32 *dst = (__le32 *)out;
        u32 b0[4], b1[4];
        const u32 *kp = E_KEY + 4;
 
-       b0[0] = u32_in (in) ^ E_KEY[0];
-       b0[1] = u32_in (in + 4) ^ E_KEY[1];
-       b0[2] = u32_in (in + 8) ^ E_KEY[2];
-       b0[3] = u32_in (in + 12) ^ E_KEY[3];
+       b0[0] = le32_to_cpu(src[0]) ^ E_KEY[0];
+       b0[1] = le32_to_cpu(src[1]) ^ E_KEY[1];
+       b0[2] = le32_to_cpu(src[2]) ^ E_KEY[2];
+       b0[3] = le32_to_cpu(src[3]) ^ E_KEY[3];
 
        if (ctx->key_length > 24) {
                f_nround (b1, b0, kp);
@@ -353,10 +352,10 @@ static void aes_encrypt(void *ctx_arg, u8 *out, const u8 *in)
        f_nround (b1, b0, kp);
        f_lround (b0, b1, kp);
 
-       u32_out (out, b0[0]);
-       u32_out (out + 4, b0[1]);
-       u32_out (out + 8, b0[2]);
-       u32_out (out + 12, b0[3]);
+       dst[0] = cpu_to_le32(b0[0]);
+       dst[1] = cpu_to_le32(b0[1]);
+       dst[2] = cpu_to_le32(b0[2]);
+       dst[3] = cpu_to_le32(b0[3]);
 }
 
 /* decrypt a block of text */
@@ -377,14 +376,16 @@ static void aes_encrypt(void *ctx_arg, u8 *out, const u8 *in)
 static void aes_decrypt(void *ctx_arg, u8 *out, const u8 *in)
 {
        const struct aes_ctx *ctx = ctx_arg;
+       const __le32 *src = (const __le32 *)in;
+       __le32 *dst = (__le32 *)out;
        u32 b0[4], b1[4];
        const int key_len = ctx->key_length;
        const u32 *kp = D_KEY + key_len + 20;
 
-       b0[0] = u32_in (in) ^ E_KEY[key_len + 24];
-       b0[1] = u32_in (in + 4) ^ E_KEY[key_len + 25];
-       b0[2] = u32_in (in + 8) ^ E_KEY[key_len + 26];
-       b0[3] = u32_in (in + 12) ^ E_KEY[key_len + 27];
+       b0[0] = le32_to_cpu(src[0]) ^ E_KEY[key_len + 24];
+       b0[1] = le32_to_cpu(src[1]) ^ E_KEY[key_len + 25];
+       b0[2] = le32_to_cpu(src[2]) ^ E_KEY[key_len + 26];
+       b0[3] = le32_to_cpu(src[3]) ^ E_KEY[key_len + 27];
 
        if (key_len > 24) {
                i_nround (b1, b0, kp);
@@ -407,18 +408,21 @@ static void aes_decrypt(void *ctx_arg, u8 *out, const u8 *in)
        i_nround (b1, b0, kp);
        i_lround (b0, b1, kp);
 
-       u32_out (out, b0[0]);
-       u32_out (out + 4, b0[1]);
-       u32_out (out + 8, b0[2]);
-       u32_out (out + 12, b0[3]);
+       dst[0] = cpu_to_le32(b0[0]);
+       dst[1] = cpu_to_le32(b0[1]);
+       dst[2] = cpu_to_le32(b0[2]);
+       dst[3] = cpu_to_le32(b0[3]);
 }
 
 
 static struct crypto_alg aes_alg = {
        .cra_name               =       "aes",
+       .cra_driver_name        =       "aes-generic",
+       .cra_priority           =       100,
        .cra_flags              =       CRYPTO_ALG_TYPE_CIPHER,
        .cra_blocksize          =       AES_BLOCK_SIZE,
        .cra_ctxsize            =       sizeof(struct aes_ctx),
+       .cra_alignmask          =       3,
        .cra_module             =       THIS_MODULE,
        .cra_list               =       LIST_HEAD_INIT(aes_alg.cra_list),
        .cra_u                  =       {