diff options
Diffstat (limited to 'crypto/cast6.c')
| -rw-r--r-- | crypto/cast6.c | 83 |
1 files changed, 33 insertions, 50 deletions
diff --git a/crypto/cast6.c b/crypto/cast6.c index 3eb0810..9e28740 100644 --- a/crypto/cast6.c +++ b/crypto/cast6.c @@ -18,11 +18,13 @@ */ +#include <asm/byteorder.h> #include <linux/init.h> #include <linux/crypto.h> #include <linux/module.h> #include <linux/errno.h> #include <linux/string.h> +#include <linux/types.h> #define CAST6_BLOCK_SIZE 16 #define CAST6_MIN_KEY_SIZE 16 @@ -384,7 +386,7 @@ cast6_setkey(void *ctx, const u8 * in_key, unsigned key_len, u32 * flags) { int i; u32 key[8]; - u8 p_key[32]; /* padded key */ + __be32 p_key[8]; /* padded key */ struct cast6_ctx *c = (struct cast6_ctx *) ctx; if (key_len < 16 || key_len > 32 || key_len % 4 != 0) { @@ -395,14 +397,14 @@ cast6_setkey(void *ctx, const u8 * in_key, unsigned key_len, u32 * flags) memset (p_key, 0, 32); memcpy (p_key, in_key, key_len); - key[0] = p_key[0] << 24 | p_key[1] << 16 | p_key[2] << 8 | p_key[3]; /* A */ - key[1] = p_key[4] << 24 | p_key[5] << 16 | p_key[6] << 8 | p_key[7]; /* B */ - key[2] = p_key[8] << 24 | p_key[9] << 16 | p_key[10] << 8 | p_key[11]; /* C */ - key[3] = p_key[12] << 24 | p_key[13] << 16 | p_key[14] << 8 | p_key[15]; /* D */ - key[4] = p_key[16] << 24 | p_key[17] << 16 | p_key[18] << 8 | p_key[19]; /* E */ - key[5] = p_key[20] << 24 | p_key[21] << 16 | p_key[22] << 8 | p_key[23]; /* F */ - key[6] = p_key[24] << 24 | p_key[25] << 16 | p_key[26] << 8 | p_key[27]; /* G */ - key[7] = p_key[28] << 24 | p_key[29] << 16 | p_key[30] << 8 | p_key[31]; /* H */ + key[0] = be32_to_cpu(p_key[0]); /* A */ + key[1] = be32_to_cpu(p_key[1]); /* B */ + key[2] = be32_to_cpu(p_key[2]); /* C */ + key[3] = be32_to_cpu(p_key[3]); /* D */ + key[4] = be32_to_cpu(p_key[4]); /* E */ + key[5] = be32_to_cpu(p_key[5]); /* F */ + key[6] = be32_to_cpu(p_key[6]); /* G */ + key[7] = be32_to_cpu(p_key[7]); /* H */ @@ -444,14 +446,16 @@ static inline void QBAR (u32 * block, u8 * Kr, u32 * Km) { static void cast6_encrypt (void * ctx, u8 * outbuf, const u8 * inbuf) { struct cast6_ctx * c = (struct cast6_ctx *)ctx; + const __be32 *src = (const __be32 *)inbuf; + __be32 *dst = (__be32 *)outbuf; u32 block[4]; u32 * Km; u8 * Kr; - block[0] = inbuf[0] << 24 | inbuf[1] << 16 | inbuf[2] << 8 | inbuf[3]; - block[1] = inbuf[4] << 24 | inbuf[5] << 16 | inbuf[6] << 8 | inbuf[7]; - block[2] = inbuf[8] << 24 | inbuf[9] << 16 | inbuf[10] << 8 | inbuf[11]; - block[3] = inbuf[12] << 24 | inbuf[13] << 16 | inbuf[14] << 8 | inbuf[15]; + block[0] = be32_to_cpu(src[0]); + block[1] = be32_to_cpu(src[1]); + block[2] = be32_to_cpu(src[2]); + block[3] = be32_to_cpu(src[3]); Km = c->Km[0]; Kr = c->Kr[0]; Q (block, Kr, Km); Km = c->Km[1]; Kr = c->Kr[1]; Q (block, Kr, Km); @@ -465,35 +469,25 @@ static void cast6_encrypt (void * ctx, u8 * outbuf, const u8 * inbuf) { Km = c->Km[9]; Kr = c->Kr[9]; QBAR (block, Kr, Km); Km = c->Km[10]; Kr = c->Kr[10]; QBAR (block, Kr, Km); Km = c->Km[11]; Kr = c->Kr[11]; QBAR (block, Kr, Km); - - outbuf[0] = (block[0] >> 24) & 0xff; - outbuf[1] = (block[0] >> 16) & 0xff; - outbuf[2] = (block[0] >> 8) & 0xff; - outbuf[3] = block[0] & 0xff; - outbuf[4] = (block[1] >> 24) & 0xff; - outbuf[5] = (block[1] >> 16) & 0xff; - outbuf[6] = (block[1] >> 8) & 0xff; - outbuf[7] = block[1] & 0xff; - outbuf[8] = (block[2] >> 24) & 0xff; - outbuf[9] = (block[2] >> 16) & 0xff; - outbuf[10] = (block[2] >> 8) & 0xff; - outbuf[11] = block[2] & 0xff; - outbuf[12] = (block[3] >> 24) & 0xff; - outbuf[13] = (block[3] >> 16) & 0xff; - outbuf[14] = (block[3] >> 8) & 0xff; - outbuf[15] = block[3] & 0xff; + + dst[0] = cpu_to_be32(block[0]); + dst[1] = cpu_to_be32(block[1]); + dst[2] = cpu_to_be32(block[2]); + dst[3] = cpu_to_be32(block[3]); } static void cast6_decrypt (void * ctx, u8 * outbuf, const u8 * inbuf) { struct cast6_ctx * c = (struct cast6_ctx *)ctx; + const __be32 *src = (const __be32 *)inbuf; + __be32 *dst = (__be32 *)outbuf; u32 block[4]; u32 * Km; u8 * Kr; - block[0] = inbuf[0] << 24 | inbuf[1] << 16 | inbuf[2] << 8 | inbuf[3]; - block[1] = inbuf[4] << 24 | inbuf[5] << 16 | inbuf[6] << 8 | inbuf[7]; - block[2] = inbuf[8] << 24 | inbuf[9] << 16 | inbuf[10] << 8 | inbuf[11]; - block[3] = inbuf[12] << 24 | inbuf[13] << 16 | inbuf[14] << 8 | inbuf[15]; + block[0] = be32_to_cpu(src[0]); + block[1] = be32_to_cpu(src[1]); + block[2] = be32_to_cpu(src[2]); + block[3] = be32_to_cpu(src[3]); Km = c->Km[11]; Kr = c->Kr[11]; Q (block, Kr, Km); Km = c->Km[10]; Kr = c->Kr[10]; Q (block, Kr, Km); @@ -508,22 +502,10 @@ static void cast6_decrypt (void * ctx, u8 * outbuf, const u8 * inbuf) { Km = c->Km[1]; Kr = c->Kr[1]; QBAR (block, Kr, Km); Km = c->Km[0]; Kr = c->Kr[0]; QBAR (block, Kr, Km); - outbuf[0] = (block[0] >> 24) & 0xff; - outbuf[1] = (block[0] >> 16) & 0xff; - outbuf[2] = (block[0] >> 8) & 0xff; - outbuf[3] = block[0] & 0xff; - outbuf[4] = (block[1] >> 24) & 0xff; - outbuf[5] = (block[1] >> 16) & 0xff; - outbuf[6] = (block[1] >> 8) & 0xff; - outbuf[7] = block[1] & 0xff; - outbuf[8] = (block[2] >> 24) & 0xff; - outbuf[9] = (block[2] >> 16) & 0xff; - outbuf[10] = (block[2] >> 8) & 0xff; - outbuf[11] = block[2] & 0xff; - outbuf[12] = (block[3] >> 24) & 0xff; - outbuf[13] = (block[3] >> 16) & 0xff; - outbuf[14] = (block[3] >> 8) & 0xff; - outbuf[15] = block[3] & 0xff; + dst[0] = cpu_to_be32(block[0]); + dst[1] = cpu_to_be32(block[1]); + dst[2] = cpu_to_be32(block[2]); + dst[3] = cpu_to_be32(block[3]); } static struct crypto_alg alg = { @@ -531,6 +513,7 @@ static struct crypto_alg alg = { .cra_flags = CRYPTO_ALG_TYPE_CIPHER, .cra_blocksize = CAST6_BLOCK_SIZE, .cra_ctxsize = sizeof(struct cast6_ctx), + .cra_alignmask = 3, .cra_module = THIS_MODULE, .cra_list = LIST_HEAD_INIT(alg.cra_list), .cra_u = { |
