crypto: aria - prepare generic module for optimized implementations
It renames aria to aria_generic and exports some functions such as
aria_set_key(), aria_encrypt(), and aria_decrypt() to be able to be
used by aria-avx implementation.
Signed-off-by: Taehee Yoo <ap420073@gmail.com>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
diff --git a/crypto/Makefile b/crypto/Makefile
index a6f94e0..303b21c 100644
--- a/crypto/Makefile
+++ b/crypto/Makefile
@@ -149,7 +149,7 @@
obj-$(CONFIG_CRYPTO_KHAZAD) += khazad.o
obj-$(CONFIG_CRYPTO_ANUBIS) += anubis.o
obj-$(CONFIG_CRYPTO_SEED) += seed.o
-obj-$(CONFIG_CRYPTO_ARIA) += aria.o
+obj-$(CONFIG_CRYPTO_ARIA) += aria_generic.o
obj-$(CONFIG_CRYPTO_CHACHA20) += chacha_generic.o
obj-$(CONFIG_CRYPTO_POLY1305) += poly1305_generic.o
obj-$(CONFIG_CRYPTO_DEFLATE) += deflate.o
diff --git a/crypto/aria.c b/crypto/aria_generic.c
similarity index 85%
rename from crypto/aria.c
rename to crypto/aria_generic.c
index ac3dffa..4cc29b8 100644
--- a/crypto/aria.c
+++ b/crypto/aria_generic.c
@@ -16,6 +16,14 @@
#include <crypto/aria.h>
+static const u32 key_rc[20] = {
+ 0x517cc1b7, 0x27220a94, 0xfe13abe8, 0xfa9a6ee0,
+ 0x6db14acc, 0x9e21c820, 0xff28b1d5, 0xef5de2b0,
+ 0xdb92371d, 0x2126e970, 0x03249775, 0x04e8c90e,
+ 0x517cc1b7, 0x27220a94, 0xfe13abe8, 0xfa9a6ee0,
+ 0x6db14acc, 0x9e21c820, 0xff28b1d5, 0xef5de2b0
+};
+
static void aria_set_encrypt_key(struct aria_ctx *ctx, const u8 *in_key,
unsigned int key_len)
{
@@ -25,7 +33,7 @@
const u32 *ck;
int rkidx = 0;
- ck = &key_rc[(key_len - 16) / 8][0];
+ ck = &key_rc[(key_len - 16) / 2];
w0[0] = be32_to_cpu(key[0]);
w0[1] = be32_to_cpu(key[1]);
@@ -163,8 +171,7 @@
}
}
-static int aria_set_key(struct crypto_tfm *tfm, const u8 *in_key,
- unsigned int key_len)
+int aria_set_key(struct crypto_tfm *tfm, const u8 *in_key, unsigned int key_len)
{
struct aria_ctx *ctx = crypto_tfm_ctx(tfm);
@@ -179,6 +186,7 @@
return 0;
}
+EXPORT_SYMBOL_GPL(aria_set_key);
static void __aria_crypt(struct aria_ctx *ctx, u8 *out, const u8 *in,
u32 key[][ARIA_RD_KEY_WORDS])
@@ -235,14 +243,30 @@
dst[3] = cpu_to_be32(reg3);
}
-static void aria_encrypt(struct crypto_tfm *tfm, u8 *out, const u8 *in)
+void aria_encrypt(void *_ctx, u8 *out, const u8 *in)
+{
+ struct aria_ctx *ctx = (struct aria_ctx *)_ctx;
+
+ __aria_crypt(ctx, out, in, ctx->enc_key);
+}
+EXPORT_SYMBOL_GPL(aria_encrypt);
+
+void aria_decrypt(void *_ctx, u8 *out, const u8 *in)
+{
+ struct aria_ctx *ctx = (struct aria_ctx *)_ctx;
+
+ __aria_crypt(ctx, out, in, ctx->dec_key);
+}
+EXPORT_SYMBOL_GPL(aria_decrypt);
+
+static void __aria_encrypt(struct crypto_tfm *tfm, u8 *out, const u8 *in)
{
struct aria_ctx *ctx = crypto_tfm_ctx(tfm);
__aria_crypt(ctx, out, in, ctx->enc_key);
}
-static void aria_decrypt(struct crypto_tfm *tfm, u8 *out, const u8 *in)
+static void __aria_decrypt(struct crypto_tfm *tfm, u8 *out, const u8 *in)
{
struct aria_ctx *ctx = crypto_tfm_ctx(tfm);
@@ -263,8 +287,8 @@
.cia_min_keysize = ARIA_MIN_KEY_SIZE,
.cia_max_keysize = ARIA_MAX_KEY_SIZE,
.cia_setkey = aria_set_key,
- .cia_encrypt = aria_encrypt,
- .cia_decrypt = aria_decrypt
+ .cia_encrypt = __aria_encrypt,
+ .cia_decrypt = __aria_decrypt
}
}
};
@@ -286,3 +310,4 @@
MODULE_LICENSE("GPL");
MODULE_AUTHOR("Taehee Yoo <ap420073@gmail.com>");
MODULE_ALIAS_CRYPTO("aria");
+MODULE_ALIAS_CRYPTO("aria-generic");
diff --git a/include/crypto/aria.h b/include/crypto/aria.h
index 4a86661..254da46 100644
--- a/include/crypto/aria.h
+++ b/include/crypto/aria.h
@@ -32,18 +32,10 @@
#define ARIA_RD_KEY_WORDS (ARIA_BLOCK_SIZE / sizeof(u32))
struct aria_ctx {
- int key_length;
- int rounds;
u32 enc_key[ARIA_MAX_RD_KEYS][ARIA_RD_KEY_WORDS];
u32 dec_key[ARIA_MAX_RD_KEYS][ARIA_RD_KEY_WORDS];
-};
-
-static const u32 key_rc[5][4] = {
- { 0x517cc1b7, 0x27220a94, 0xfe13abe8, 0xfa9a6ee0 },
- { 0x6db14acc, 0x9e21c820, 0xff28b1d5, 0xef5de2b0 },
- { 0xdb92371d, 0x2126e970, 0x03249775, 0x04e8c90e },
- { 0x517cc1b7, 0x27220a94, 0xfe13abe8, 0xfa9a6ee0 },
- { 0x6db14acc, 0x9e21c820, 0xff28b1d5, 0xef5de2b0 }
+ int rounds;
+ int key_length;
};
static const u32 s1[256] = {
@@ -458,4 +450,9 @@
((y[(q + 2) % 4]) << (32 - r));
}
+void aria_encrypt(void *ctx, u8 *out, const u8 *in);
+void aria_decrypt(void *ctx, u8 *out, const u8 *in);
+int aria_set_key(struct crypto_tfm *tfm, const u8 *in_key,
+ unsigned int key_len);
+
#endif
