diff options
Diffstat (limited to 'crypto/aes_generic.c')
| -rw-r--r-- | crypto/aes_generic.c | 64 |
1 files changed, 32 insertions, 32 deletions
diff --git a/crypto/aes_generic.c b/crypto/aes_generic.c index 3dd101144a58..ca554d57d01e 100644 --- a/crypto/aes_generic.c +++ b/crypto/aes_generic.c @@ -54,6 +54,7 @@ #include <linux/errno.h> #include <linux/crypto.h> #include <asm/byteorder.h> +#include <asm/unaligned.h> static inline u8 byte(const u32 x, const unsigned n) { @@ -1216,7 +1217,6 @@ EXPORT_SYMBOL_GPL(crypto_il_tab); int crypto_aes_expand_key(struct crypto_aes_ctx *ctx, const u8 *in_key, unsigned int key_len) { - const __le32 *key = (const __le32 *)in_key; u32 i, t, u, v, w, j; if (key_len != AES_KEYSIZE_128 && key_len != AES_KEYSIZE_192 && @@ -1225,10 +1225,15 @@ int crypto_aes_expand_key(struct crypto_aes_ctx *ctx, const u8 *in_key, ctx->key_length = key_len; - ctx->key_dec[key_len + 24] = ctx->key_enc[0] = le32_to_cpu(key[0]); - ctx->key_dec[key_len + 25] = ctx->key_enc[1] = le32_to_cpu(key[1]); - ctx->key_dec[key_len + 26] = ctx->key_enc[2] = le32_to_cpu(key[2]); - ctx->key_dec[key_len + 27] = ctx->key_enc[3] = le32_to_cpu(key[3]); + ctx->key_enc[0] = get_unaligned_le32(in_key); + ctx->key_enc[1] = get_unaligned_le32(in_key + 4); + ctx->key_enc[2] = get_unaligned_le32(in_key + 8); + ctx->key_enc[3] = get_unaligned_le32(in_key + 12); + + ctx->key_dec[key_len + 24] = ctx->key_enc[0]; + ctx->key_dec[key_len + 25] = ctx->key_enc[1]; + ctx->key_dec[key_len + 26] = ctx->key_enc[2]; + ctx->key_dec[key_len + 27] = ctx->key_enc[3]; switch (key_len) { case AES_KEYSIZE_128: @@ -1238,17 +1243,17 @@ int crypto_aes_expand_key(struct crypto_aes_ctx *ctx, const u8 *in_key, break; case AES_KEYSIZE_192: - ctx->key_enc[4] = le32_to_cpu(key[4]); - t = ctx->key_enc[5] = le32_to_cpu(key[5]); + ctx->key_enc[4] = get_unaligned_le32(in_key + 16); + t = ctx->key_enc[5] = get_unaligned_le32(in_key + 20); for (i = 0; i < 8; ++i) loop6(i); break; case AES_KEYSIZE_256: - ctx->key_enc[4] = le32_to_cpu(key[4]); - ctx->key_enc[5] = le32_to_cpu(key[5]); - ctx->key_enc[6] = le32_to_cpu(key[6]); - t = ctx->key_enc[7] = le32_to_cpu(key[7]); + ctx->key_enc[4] = get_unaligned_le32(in_key + 16); + ctx->key_enc[5] = get_unaligned_le32(in_key + 20); + ctx->key_enc[6] = get_unaligned_le32(in_key + 24); + t = ctx->key_enc[7] = get_unaligned_le32(in_key + 28); for (i = 0; i < 6; ++i) loop8(i); loop8tophalf(i); @@ -1329,16 +1334,14 @@ EXPORT_SYMBOL_GPL(crypto_aes_set_key); static void aes_encrypt(struct crypto_tfm *tfm, u8 *out, const u8 *in) { const struct crypto_aes_ctx *ctx = crypto_tfm_ctx(tfm); - const __le32 *src = (const __le32 *)in; - __le32 *dst = (__le32 *)out; u32 b0[4], b1[4]; const u32 *kp = ctx->key_enc + 4; const int key_len = ctx->key_length; - b0[0] = le32_to_cpu(src[0]) ^ ctx->key_enc[0]; - b0[1] = le32_to_cpu(src[1]) ^ ctx->key_enc[1]; - b0[2] = le32_to_cpu(src[2]) ^ ctx->key_enc[2]; - b0[3] = le32_to_cpu(src[3]) ^ ctx->key_enc[3]; + b0[0] = ctx->key_enc[0] ^ get_unaligned_le32(in); + b0[1] = ctx->key_enc[1] ^ get_unaligned_le32(in + 4); + b0[2] = ctx->key_enc[2] ^ get_unaligned_le32(in + 8); + b0[3] = ctx->key_enc[3] ^ get_unaligned_le32(in + 12); if (key_len > 24) { f_nround(b1, b0, kp); @@ -1361,10 +1364,10 @@ static void aes_encrypt(struct crypto_tfm *tfm, u8 *out, const u8 *in) f_nround(b1, b0, kp); f_lround(b0, b1, kp); - 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]); + put_unaligned_le32(b0[0], out); + put_unaligned_le32(b0[1], out + 4); + put_unaligned_le32(b0[2], out + 8); + put_unaligned_le32(b0[3], out + 12); } /* decrypt a block of text */ @@ -1401,16 +1404,14 @@ static void aes_encrypt(struct crypto_tfm *tfm, u8 *out, const u8 *in) static void aes_decrypt(struct crypto_tfm *tfm, u8 *out, const u8 *in) { const struct crypto_aes_ctx *ctx = crypto_tfm_ctx(tfm); - 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 = ctx->key_dec + 4; - b0[0] = le32_to_cpu(src[0]) ^ ctx->key_dec[0]; - b0[1] = le32_to_cpu(src[1]) ^ ctx->key_dec[1]; - b0[2] = le32_to_cpu(src[2]) ^ ctx->key_dec[2]; - b0[3] = le32_to_cpu(src[3]) ^ ctx->key_dec[3]; + b0[0] = ctx->key_dec[0] ^ get_unaligned_le32(in); + b0[1] = ctx->key_dec[1] ^ get_unaligned_le32(in + 4); + b0[2] = ctx->key_dec[2] ^ get_unaligned_le32(in + 8); + b0[3] = ctx->key_dec[3] ^ get_unaligned_le32(in + 12); if (key_len > 24) { i_nround(b1, b0, kp); @@ -1433,10 +1434,10 @@ static void aes_decrypt(struct crypto_tfm *tfm, u8 *out, const u8 *in) i_nround(b1, b0, kp); i_lround(b0, b1, kp); - 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]); + put_unaligned_le32(b0[0], out); + put_unaligned_le32(b0[1], out + 4); + put_unaligned_le32(b0[2], out + 8); + put_unaligned_le32(b0[3], out + 12); } static struct crypto_alg aes_alg = { @@ -1446,7 +1447,6 @@ static struct crypto_alg aes_alg = { .cra_flags = CRYPTO_ALG_TYPE_CIPHER, .cra_blocksize = AES_BLOCK_SIZE, .cra_ctxsize = sizeof(struct crypto_aes_ctx), - .cra_alignmask = 3, .cra_module = THIS_MODULE, .cra_u = { .cipher = { |
