#include <asm/byteorder.h>
#include <asm/unaligned.h>
-static const u32 fk[4] = {
- 0xa3b1bac6, 0x56aa3350, 0x677d9197, 0xb27022dc
-};
-
-static const u8 sbox[256] = {
- 0xd6, 0x90, 0xe9, 0xfe, 0xcc, 0xe1, 0x3d, 0xb7,
- 0x16, 0xb6, 0x14, 0xc2, 0x28, 0xfb, 0x2c, 0x05,
- 0x2b, 0x67, 0x9a, 0x76, 0x2a, 0xbe, 0x04, 0xc3,
- 0xaa, 0x44, 0x13, 0x26, 0x49, 0x86, 0x06, 0x99,
- 0x9c, 0x42, 0x50, 0xf4, 0x91, 0xef, 0x98, 0x7a,
- 0x33, 0x54, 0x0b, 0x43, 0xed, 0xcf, 0xac, 0x62,
- 0xe4, 0xb3, 0x1c, 0xa9, 0xc9, 0x08, 0xe8, 0x95,
- 0x80, 0xdf, 0x94, 0xfa, 0x75, 0x8f, 0x3f, 0xa6,
- 0x47, 0x07, 0xa7, 0xfc, 0xf3, 0x73, 0x17, 0xba,
- 0x83, 0x59, 0x3c, 0x19, 0xe6, 0x85, 0x4f, 0xa8,
- 0x68, 0x6b, 0x81, 0xb2, 0x71, 0x64, 0xda, 0x8b,
- 0xf8, 0xeb, 0x0f, 0x4b, 0x70, 0x56, 0x9d, 0x35,
- 0x1e, 0x24, 0x0e, 0x5e, 0x63, 0x58, 0xd1, 0xa2,
- 0x25, 0x22, 0x7c, 0x3b, 0x01, 0x21, 0x78, 0x87,
- 0xd4, 0x00, 0x46, 0x57, 0x9f, 0xd3, 0x27, 0x52,
- 0x4c, 0x36, 0x02, 0xe7, 0xa0, 0xc4, 0xc8, 0x9e,
- 0xea, 0xbf, 0x8a, 0xd2, 0x40, 0xc7, 0x38, 0xb5,
- 0xa3, 0xf7, 0xf2, 0xce, 0xf9, 0x61, 0x15, 0xa1,
- 0xe0, 0xae, 0x5d, 0xa4, 0x9b, 0x34, 0x1a, 0x55,
- 0xad, 0x93, 0x32, 0x30, 0xf5, 0x8c, 0xb1, 0xe3,
- 0x1d, 0xf6, 0xe2, 0x2e, 0x82, 0x66, 0xca, 0x60,
- 0xc0, 0x29, 0x23, 0xab, 0x0d, 0x53, 0x4e, 0x6f,
- 0xd5, 0xdb, 0x37, 0x45, 0xde, 0xfd, 0x8e, 0x2f,
- 0x03, 0xff, 0x6a, 0x72, 0x6d, 0x6c, 0x5b, 0x51,
- 0x8d, 0x1b, 0xaf, 0x92, 0xbb, 0xdd, 0xbc, 0x7f,
- 0x11, 0xd9, 0x5c, 0x41, 0x1f, 0x10, 0x5a, 0xd8,
- 0x0a, 0xc1, 0x31, 0x88, 0xa5, 0xcd, 0x7b, 0xbd,
- 0x2d, 0x74, 0xd0, 0x12, 0xb8, 0xe5, 0xb4, 0xb0,
- 0x89, 0x69, 0x97, 0x4a, 0x0c, 0x96, 0x77, 0x7e,
- 0x65, 0xb9, 0xf1, 0x09, 0xc5, 0x6e, 0xc6, 0x84,
- 0x18, 0xf0, 0x7d, 0xec, 0x3a, 0xdc, 0x4d, 0x20,
- 0x79, 0xee, 0x5f, 0x3e, 0xd7, 0xcb, 0x39, 0x48
-};
-
-static const u32 ck[] = {
- 0x00070e15, 0x1c232a31, 0x383f464d, 0x545b6269,
- 0x70777e85, 0x8c939aa1, 0xa8afb6bd, 0xc4cbd2d9,
- 0xe0e7eef5, 0xfc030a11, 0x181f262d, 0x343b4249,
- 0x50575e65, 0x6c737a81, 0x888f969d, 0xa4abb2b9,
- 0xc0c7ced5, 0xdce3eaf1, 0xf8ff060d, 0x141b2229,
- 0x30373e45, 0x4c535a61, 0x686f767d, 0x848b9299,
- 0xa0a7aeb5, 0xbcc3cad1, 0xd8dfe6ed, 0xf4fb0209,
- 0x10171e25, 0x2c333a41, 0x484f565d, 0x646b7279
-};
-
-static u32 sm4_t_non_lin_sub(u32 x)
-{
- int i;
- u8 *b = (u8 *)&x;
-
- for (i = 0; i < 4; ++i)
- b[i] = sbox[b[i]];
-
- return x;
-}
-
-static u32 sm4_key_lin_sub(u32 x)
-{
- return x ^ rol32(x, 13) ^ rol32(x, 23);
-
-}
-
-static u32 sm4_enc_lin_sub(u32 x)
-{
- return x ^ rol32(x, 2) ^ rol32(x, 10) ^ rol32(x, 18) ^ rol32(x, 24);
-}
-
-static u32 sm4_key_sub(u32 x)
-{
- return sm4_key_lin_sub(sm4_t_non_lin_sub(x));
-}
-
-static u32 sm4_enc_sub(u32 x)
-{
- return sm4_enc_lin_sub(sm4_t_non_lin_sub(x));
-}
-
-static u32 sm4_round(const u32 *x, const u32 rk)
-{
- return x[0] ^ sm4_enc_sub(x[1] ^ x[2] ^ x[3] ^ rk);
-}
-
-
/**
- * crypto_sm4_expand_key - Expands the SM4 key as described in GB/T 32907-2016
- * @ctx: The location where the computed key will be stored.
- * @in_key: The supplied key.
- * @key_len: The length of the supplied key.
- *
- * Returns 0 on success. The function fails only if an invalid key size (or
- * pointer) is supplied.
- */
-int crypto_sm4_expand_key(struct crypto_sm4_ctx *ctx, const u8 *in_key,
- unsigned int key_len)
-{
- u32 rk[4], t;
- const u32 *key = (u32 *)in_key;
- int i;
-
- if (key_len != SM4_KEY_SIZE)
- return -EINVAL;
-
- for (i = 0; i < 4; ++i)
- rk[i] = get_unaligned_be32(&key[i]) ^ fk[i];
-
- for (i = 0; i < 32; ++i) {
- t = rk[0] ^ sm4_key_sub(rk[1] ^ rk[2] ^ rk[3] ^ ck[i]);
- ctx->rkey_enc[i] = t;
- rk[0] = rk[1];
- rk[1] = rk[2];
- rk[2] = rk[3];
- rk[3] = t;
- }
-
- for (i = 0; i < 32; ++i)
- ctx->rkey_dec[i] = ctx->rkey_enc[31 - i];
-
- return 0;
-}
-EXPORT_SYMBOL_GPL(crypto_sm4_expand_key);
-
-/**
- * crypto_sm4_set_key - Set the SM4 key.
+ * sm4_setkey - Set the SM4 key.
* @tfm: The %crypto_tfm that is used in the context.
* @in_key: The input key.
* @key_len: The size of the key.
*
- * This function uses crypto_sm4_expand_key() to expand the key.
- * &crypto_sm4_ctx _must_ be the private data embedded in @tfm which is
+ * This function uses sm4_expandkey() to expand the key.
+ * &sm4_ctx _must_ be the private data embedded in @tfm which is
* retrieved with crypto_tfm_ctx().
*
* Return: 0 on success; -EINVAL on failure (only happens for bad key lengths)
*/
-int crypto_sm4_set_key(struct crypto_tfm *tfm, const u8 *in_key,
+static int sm4_setkey(struct crypto_tfm *tfm, const u8 *in_key,
unsigned int key_len)
{
- struct crypto_sm4_ctx *ctx = crypto_tfm_ctx(tfm);
-
- return crypto_sm4_expand_key(ctx, in_key, key_len);
-}
-EXPORT_SYMBOL_GPL(crypto_sm4_set_key);
-
-static void sm4_do_crypt(const u32 *rk, u32 *out, const u32 *in)
-{
- u32 x[4], i, t;
-
- for (i = 0; i < 4; ++i)
- x[i] = get_unaligned_be32(&in[i]);
-
- for (i = 0; i < 32; ++i) {
- t = sm4_round(x, rk[i]);
- x[0] = x[1];
- x[1] = x[2];
- x[2] = x[3];
- x[3] = t;
- }
+ struct sm4_ctx *ctx = crypto_tfm_ctx(tfm);
- for (i = 0; i < 4; ++i)
- put_unaligned_be32(x[3 - i], &out[i]);
+ return sm4_expandkey(ctx, in_key, key_len);
}
/* encrypt a block of text */
-void crypto_sm4_encrypt(struct crypto_tfm *tfm, u8 *out, const u8 *in)
+static void sm4_encrypt(struct crypto_tfm *tfm, u8 *out, const u8 *in)
{
- const struct crypto_sm4_ctx *ctx = crypto_tfm_ctx(tfm);
+ const struct sm4_ctx *ctx = crypto_tfm_ctx(tfm);
- sm4_do_crypt(ctx->rkey_enc, (u32 *)out, (u32 *)in);
+ sm4_crypt_block(ctx->rkey_enc, out, in);
}
-EXPORT_SYMBOL_GPL(crypto_sm4_encrypt);
/* decrypt a block of text */
-void crypto_sm4_decrypt(struct crypto_tfm *tfm, u8 *out, const u8 *in)
+static void sm4_decrypt(struct crypto_tfm *tfm, u8 *out, const u8 *in)
{
- const struct crypto_sm4_ctx *ctx = crypto_tfm_ctx(tfm);
+ const struct sm4_ctx *ctx = crypto_tfm_ctx(tfm);
- sm4_do_crypt(ctx->rkey_dec, (u32 *)out, (u32 *)in);
+ sm4_crypt_block(ctx->rkey_dec, out, in);
}
-EXPORT_SYMBOL_GPL(crypto_sm4_decrypt);
static struct crypto_alg sm4_alg = {
.cra_name = "sm4",
.cra_priority = 100,
.cra_flags = CRYPTO_ALG_TYPE_CIPHER,
.cra_blocksize = SM4_BLOCK_SIZE,
- .cra_ctxsize = sizeof(struct crypto_sm4_ctx),
+ .cra_ctxsize = sizeof(struct sm4_ctx),
.cra_module = THIS_MODULE,
.cra_u = {
.cipher = {
.cia_min_keysize = SM4_KEY_SIZE,
.cia_max_keysize = SM4_KEY_SIZE,
- .cia_setkey = crypto_sm4_set_key,
- .cia_encrypt = crypto_sm4_encrypt,
- .cia_decrypt = crypto_sm4_decrypt
+ .cia_setkey = sm4_setkey,
+ .cia_encrypt = sm4_encrypt,
+ .cia_decrypt = sm4_decrypt
}
}
};
projects / linux-2.6-microblaze.git / blobdiff