staging/skein: rename files and clean up directory structure
Clean up file names and locations. Get rid of include/ directory and move
those up to the top-level. Rename files to get rid of upper case. Remove
skeinBlockNo3F.c as it was unused (temporary file or something?).
Signed-off-by: Jake Edge <jake@lwn.net>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
diff --git a/drivers/staging/skein/threefish_api.c b/drivers/staging/skein/threefish_api.c
new file mode 100644
index 0000000..2b649ab
--- /dev/null
+++ b/drivers/staging/skein/threefish_api.c
@@ -0,0 +1,77 @@
+#include <linux/string.h>
+#include "threefish_api.h"
+
+void threefish_set_key(struct threefish_key *key_ctx,
+ enum threefish_size state_size,
+ u64 *key_data, u64 *tweak)
+{
+ int key_words = state_size / 64;
+ int i;
+ u64 parity = KEY_SCHEDULE_CONST;
+
+ key_ctx->tweak[0] = tweak[0];
+ key_ctx->tweak[1] = tweak[1];
+ key_ctx->tweak[2] = tweak[0] ^ tweak[1];
+
+ for (i = 0; i < key_words; i++) {
+ key_ctx->key[i] = key_data[i];
+ parity ^= key_data[i];
+ }
+ key_ctx->key[i] = parity;
+ key_ctx->state_size = state_size;
+}
+
+void threefish_encrypt_block_bytes(struct threefish_key *key_ctx, u8 *in,
+ u8 *out)
+{
+ u64 plain[SKEIN_MAX_STATE_WORDS]; /* max number of words*/
+ u64 cipher[SKEIN_MAX_STATE_WORDS];
+
+ skein_get64_lsb_first(plain, in, key_ctx->state_size / 64);
+ threefish_encrypt_block_words(key_ctx, plain, cipher);
+ skein_put64_lsb_first(out, cipher, key_ctx->state_size / 8);
+}
+
+void threefish_encrypt_block_words(struct threefish_key *key_ctx, u64 *in,
+ u64 *out)
+{
+ switch (key_ctx->state_size) {
+ case THREEFISH_256:
+ threefish_encrypt_256(key_ctx, in, out);
+ break;
+ case THREEFISH_512:
+ threefish_encrypt_512(key_ctx, in, out);
+ break;
+ case THREEFISH_1024:
+ threefish_encrypt_1024(key_ctx, in, out);
+ break;
+ }
+}
+
+void threefish_decrypt_block_bytes(struct threefish_key *key_ctx, u8 *in,
+ u8 *out)
+{
+ u64 plain[SKEIN_MAX_STATE_WORDS]; /* max number of words*/
+ u64 cipher[SKEIN_MAX_STATE_WORDS];
+
+ skein_get64_lsb_first(cipher, in, key_ctx->state_size / 64);
+ threefish_decrypt_block_words(key_ctx, cipher, plain);
+ skein_put64_lsb_first(out, plain, key_ctx->state_size / 8);
+}
+
+void threefish_decrypt_block_words(struct threefish_key *key_ctx, u64 *in,
+ u64 *out)
+{
+ switch (key_ctx->state_size) {
+ case THREEFISH_256:
+ threefish_decrypt_256(key_ctx, in, out);
+ break;
+ case THREEFISH_512:
+ threefish_decrypt_512(key_ctx, in, out);
+ break;
+ case THREEFISH_1024:
+ threefish_decrypt_1024(key_ctx, in, out);
+ break;
+ }
+}
+