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authorHerbert Xu <herbert@gondor.apana.org.au>2006-05-16 12:09:29 (GMT)
committerHerbert Xu <herbert@gondor.apana.org.au>2006-06-26 07:34:39 (GMT)
commit6c2bb98bc33ae33c7a33a133a4cd5a06395fece5 (patch)
tree96684cd2c473cd05d651ce1fa3dd72b1b4b19b09 /crypto/serpent.c
parent43600106e32809a4dead79fec67a63e9860e3d5d (diff)
[CRYPTO] all: Pass tfm instead of ctx to algorithms
Up until now algorithms have been happy to get a context pointer since they know everything that's in the tfm already (e.g., alignment, block size). However, once we have parameterised algorithms, such information will be specific to each tfm. So the algorithm API needs to be changed to pass the tfm structure instead of the context pointer. This patch is basically a text substitution. The only tricky bit is the assembly routines that need to get the context pointer offset through asm-offsets.h. Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
Diffstat (limited to 'crypto/serpent.c')
-rw-r--r--crypto/serpent.c27
1 files changed, 16 insertions, 11 deletions
diff --git a/crypto/serpent.c b/crypto/serpent.c
index e366406..de60cdd 100644
--- a/crypto/serpent.c
+++ b/crypto/serpent.c
@@ -215,9 +215,11 @@ struct serpent_ctx {
};
-static int serpent_setkey(void *ctx, const u8 *key, unsigned int keylen, u32 *flags)
+static int serpent_setkey(struct crypto_tfm *tfm, const u8 *key,
+ unsigned int keylen, u32 *flags)
{
- u32 *k = ((struct serpent_ctx *)ctx)->expkey;
+ struct serpent_ctx *ctx = crypto_tfm_ctx(tfm);
+ u32 *k = ctx->expkey;
u8 *k8 = (u8 *)k;
u32 r0,r1,r2,r3,r4;
int i;
@@ -365,10 +367,11 @@ static int serpent_setkey(void *ctx, const u8 *key, unsigned int keylen, u32 *fl
return 0;
}
-static void serpent_encrypt(void *ctx, u8 *dst, const u8 *src)
+static void serpent_encrypt(struct crypto_tfm *tfm, u8 *dst, const u8 *src)
{
+ struct serpent_ctx *ctx = crypto_tfm_ctx(tfm);
const u32
- *k = ((struct serpent_ctx *)ctx)->expkey,
+ *k = ctx->expkey,
*s = (const u32 *)src;
u32 *d = (u32 *)dst,
r0, r1, r2, r3, r4;
@@ -423,8 +426,9 @@ static void serpent_encrypt(void *ctx, u8 *dst, const u8 *src)
d[3] = cpu_to_le32(r3);
}
-static void serpent_decrypt(void *ctx, u8 *dst, const u8 *src)
+static void serpent_decrypt(struct crypto_tfm *tfm, u8 *dst, const u8 *src)
{
+ struct serpent_ctx *ctx = crypto_tfm_ctx(tfm);
const u32
*k = ((struct serpent_ctx *)ctx)->expkey,
*s = (const u32 *)src;
@@ -492,7 +496,8 @@ static struct crypto_alg serpent_alg = {
.cia_decrypt = serpent_decrypt } }
};
-static int tnepres_setkey(void *ctx, const u8 *key, unsigned int keylen, u32 *flags)
+static int tnepres_setkey(struct crypto_tfm *tfm, const u8 *key,
+ unsigned int keylen, u32 *flags)
{
u8 rev_key[SERPENT_MAX_KEY_SIZE];
int i;
@@ -506,10 +511,10 @@ static int tnepres_setkey(void *ctx, const u8 *key, unsigned int keylen, u32 *fl
for (i = 0; i < keylen; ++i)
rev_key[keylen - i - 1] = key[i];
- return serpent_setkey(ctx, rev_key, keylen, flags);
+ return serpent_setkey(tfm, rev_key, keylen, flags);
}
-static void tnepres_encrypt(void *ctx, u8 *dst, const u8 *src)
+static void tnepres_encrypt(struct crypto_tfm *tfm, u8 *dst, const u8 *src)
{
const u32 * const s = (const u32 * const)src;
u32 * const d = (u32 * const)dst;
@@ -521,7 +526,7 @@ static void tnepres_encrypt(void *ctx, u8 *dst, const u8 *src)
rs[2] = swab32(s[1]);
rs[3] = swab32(s[0]);
- serpent_encrypt(ctx, (u8 *)rd, (u8 *)rs);
+ serpent_encrypt(tfm, (u8 *)rd, (u8 *)rs);
d[0] = swab32(rd[3]);
d[1] = swab32(rd[2]);
@@ -529,7 +534,7 @@ static void tnepres_encrypt(void *ctx, u8 *dst, const u8 *src)
d[3] = swab32(rd[0]);
}
-static void tnepres_decrypt(void *ctx, u8 *dst, const u8 *src)
+static void tnepres_decrypt(struct crypto_tfm *tfm, u8 *dst, const u8 *src)
{
const u32 * const s = (const u32 * const)src;
u32 * const d = (u32 * const)dst;
@@ -541,7 +546,7 @@ static void tnepres_decrypt(void *ctx, u8 *dst, const u8 *src)
rs[2] = swab32(s[1]);
rs[3] = swab32(s[0]);
- serpent_decrypt(ctx, (u8 *)rd, (u8 *)rs);
+ serpent_decrypt(tfm, (u8 *)rd, (u8 *)rs);
d[0] = swab32(rd[3]);
d[1] = swab32(rd[2]);

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