#include <linux/cryptohash.h>
#include <linux/types.h>
#include <crypto/sha.h>
-#include <asm/byteorder.h>
+#include <crypto/sha256_base.h>
#include <asm/i387.h>
#include <asm/xcr.h>
#include <asm/xsave.h>
#include <linux/string.h>
-asmlinkage void sha256_transform_ssse3(const char *data, u32 *digest,
- u64 rounds);
+asmlinkage void sha256_transform_ssse3(u32 *digest, const char *data,
+ u64 rounds);
#ifdef CONFIG_AS_AVX
-asmlinkage void sha256_transform_avx(const char *data, u32 *digest,
+asmlinkage void sha256_transform_avx(u32 *digest, const char *data,
u64 rounds);
#endif
#ifdef CONFIG_AS_AVX2
-asmlinkage void sha256_transform_rorx(const char *data, u32 *digest,
- u64 rounds);
+asmlinkage void sha256_transform_rorx(u32 *digest, const char *data,
+ u64 rounds);
#endif
-static asmlinkage void (*sha256_transform_asm)(const char *, u32 *, u64);
-
-
-static int sha256_ssse3_init(struct shash_desc *desc)
-{
- struct sha256_state *sctx = shash_desc_ctx(desc);
-
- sctx->state[0] = SHA256_H0;
- sctx->state[1] = SHA256_H1;
- sctx->state[2] = SHA256_H2;
- sctx->state[3] = SHA256_H3;
- sctx->state[4] = SHA256_H4;
- sctx->state[5] = SHA256_H5;
- sctx->state[6] = SHA256_H6;
- sctx->state[7] = SHA256_H7;
- sctx->count = 0;
-
- return 0;
-}
-
-static int __sha256_ssse3_update(struct shash_desc *desc, const u8 *data,
- unsigned int len, unsigned int partial)
-{
- struct sha256_state *sctx = shash_desc_ctx(desc);
- unsigned int done = 0;
-
- sctx->count += len;
-
- if (partial) {
- done = SHA256_BLOCK_SIZE - partial;
- memcpy(sctx->buf + partial, data, done);
- sha256_transform_asm(sctx->buf, sctx->state, 1);
- }
-
- if (len - done >= SHA256_BLOCK_SIZE) {
- const unsigned int rounds = (len - done) / SHA256_BLOCK_SIZE;
-
- sha256_transform_asm(data + done, sctx->state, (u64) rounds);
-
- done += rounds * SHA256_BLOCK_SIZE;
- }
-
- memcpy(sctx->buf, data + done, len - done);
-
- return 0;
-}
+static void (*sha256_transform_asm)(u32 *, const char *, u64);
static int sha256_ssse3_update(struct shash_desc *desc, const u8 *data,
unsigned int len)
{
struct sha256_state *sctx = shash_desc_ctx(desc);
- unsigned int partial = sctx->count % SHA256_BLOCK_SIZE;
- int res;
- /* Handle the fast case right here */
- if (partial + len < SHA256_BLOCK_SIZE) {
- sctx->count += len;
- memcpy(sctx->buf + partial, data, len);
+ if (!irq_fpu_usable() ||
+ (sctx->count % SHA256_BLOCK_SIZE) + len < SHA256_BLOCK_SIZE)
+ return crypto_sha256_update(desc, data, len);
- return 0;
- }
-
- if (!irq_fpu_usable()) {
- res = crypto_sha256_update(desc, data, len);
- } else {
- kernel_fpu_begin();
- res = __sha256_ssse3_update(desc, data, len, partial);
- kernel_fpu_end();
- }
-
- return res;
-}
+ /* make sure casting to sha256_block_fn() is safe */
+ BUILD_BUG_ON(offsetof(struct sha256_state, state) != 0);
-
-/* Add padding and return the message digest. */
-static int sha256_ssse3_final(struct shash_desc *desc, u8 *out)
-{
- struct sha256_state *sctx = shash_desc_ctx(desc);
- unsigned int i, index, padlen;
- __be32 *dst = (__be32 *)out;
- __be64 bits;
- static const u8 padding[SHA256_BLOCK_SIZE] = { 0x80, };
-
- bits = cpu_to_be64(sctx->count << 3);
-
- /* Pad out to 56 mod 64 and append length */
- index = sctx->count % SHA256_BLOCK_SIZE;
- padlen = (index < 56) ? (56 - index) : ((SHA256_BLOCK_SIZE+56)-index);
-
- if (!irq_fpu_usable()) {
- crypto_sha256_update(desc, padding, padlen);
- crypto_sha256_update(desc, (const u8 *)&bits, sizeof(bits));
- } else {
- kernel_fpu_begin();
- /* We need to fill a whole block for __sha256_ssse3_update() */
- if (padlen <= 56) {
- sctx->count += padlen;
- memcpy(sctx->buf + index, padding, padlen);
- } else {
- __sha256_ssse3_update(desc, padding, padlen, index);
- }
- __sha256_ssse3_update(desc, (const u8 *)&bits,
- sizeof(bits), 56);
- kernel_fpu_end();
- }
-
- /* Store state in digest */
- for (i = 0; i < 8; i++)
- dst[i] = cpu_to_be32(sctx->state[i]);
-
- /* Wipe context */
- memset(sctx, 0, sizeof(*sctx));
+ kernel_fpu_begin();
+ sha256_base_do_update(desc, data, len,
+ (sha256_block_fn *)sha256_transform_asm);
+ kernel_fpu_end();
return 0;
}
-static int sha256_ssse3_export(struct shash_desc *desc, void *out)
+static int sha256_ssse3_finup(struct shash_desc *desc, const u8 *data,
+ unsigned int len, u8 *out)
{
- struct sha256_state *sctx = shash_desc_ctx(desc);
+ if (!irq_fpu_usable())
+ return crypto_sha256_finup(desc, data, len, out);
- memcpy(out, sctx, sizeof(*sctx));
+ kernel_fpu_begin();
+ if (len)
+ sha256_base_do_update(desc, data, len,
+ (sha256_block_fn *)sha256_transform_asm);
+ sha256_base_do_finalize(desc, (sha256_block_fn *)sha256_transform_asm);
+ kernel_fpu_end();
- return 0;
+ return sha256_base_finish(desc, out);
}
-static int sha256_ssse3_import(struct shash_desc *desc, const void *in)
-{
- struct sha256_state *sctx = shash_desc_ctx(desc);
-
- memcpy(sctx, in, sizeof(*sctx));
-
- return 0;
-}
-
-static int sha224_ssse3_init(struct shash_desc *desc)
-{
- struct sha256_state *sctx = shash_desc_ctx(desc);
-
- sctx->state[0] = SHA224_H0;
- sctx->state[1] = SHA224_H1;
- sctx->state[2] = SHA224_H2;
- sctx->state[3] = SHA224_H3;
- sctx->state[4] = SHA224_H4;
- sctx->state[5] = SHA224_H5;
- sctx->state[6] = SHA224_H6;
- sctx->state[7] = SHA224_H7;
- sctx->count = 0;
-
- return 0;
-}
-
-static int sha224_ssse3_final(struct shash_desc *desc, u8 *hash)
+/* Add padding and return the message digest. */
+static int sha256_ssse3_final(struct shash_desc *desc, u8 *out)
{
- u8 D[SHA256_DIGEST_SIZE];
-
- sha256_ssse3_final(desc, D);
-
- memcpy(hash, D, SHA224_DIGEST_SIZE);
- memzero_explicit(D, SHA256_DIGEST_SIZE);
-
- return 0;
+ return sha256_ssse3_finup(desc, NULL, 0, out);
}
static struct shash_alg algs[] = { {
.digestsize = SHA256_DIGEST_SIZE,
- .init = sha256_ssse3_init,
+ .init = sha256_base_init,
.update = sha256_ssse3_update,
.final = sha256_ssse3_final,
- .export = sha256_ssse3_export,
- .import = sha256_ssse3_import,
+ .finup = sha256_ssse3_finup,
.descsize = sizeof(struct sha256_state),
- .statesize = sizeof(struct sha256_state),
.base = {
.cra_name = "sha256",
.cra_driver_name = "sha256-ssse3",
}
}, {
.digestsize = SHA224_DIGEST_SIZE,
- .init = sha224_ssse3_init,
+ .init = sha224_base_init,
.update = sha256_ssse3_update,
- .final = sha224_ssse3_final,
- .export = sha256_ssse3_export,
- .import = sha256_ssse3_import,
+ .final = sha256_ssse3_final,
+ .finup = sha256_ssse3_finup,
.descsize = sizeof(struct sha256_state),
- .statesize = sizeof(struct sha256_state),
.base = {
.cra_name = "sha224",
.cra_driver_name = "sha224-ssse3",
projects / GitHub / moto-9609 / android_kernel_motorola_exynos9610.git / commitdiff