diff options
| -rw-r--r-- | crypto/Makefile | 2 | ||||
| -rw-r--r-- | crypto/cast6_generic.c (renamed from crypto/cast6.c) | 66 | ||||
| -rw-r--r-- | include/crypto/cast6.h | 23 |
3 files changed, 67 insertions, 24 deletions
diff --git a/crypto/Makefile b/crypto/Makefile index a56821e5d573..396966d2d849 100644 --- a/crypto/Makefile +++ b/crypto/Makefile @@ -69,7 +69,7 @@ obj-$(CONFIG_CRYPTO_SERPENT) += serpent_generic.o obj-$(CONFIG_CRYPTO_AES) += aes_generic.o obj-$(CONFIG_CRYPTO_CAMELLIA) += camellia_generic.o obj-$(CONFIG_CRYPTO_CAST5) += cast5_generic.o -obj-$(CONFIG_CRYPTO_CAST6) += cast6.o +obj-$(CONFIG_CRYPTO_CAST6) += cast6_generic.o obj-$(CONFIG_CRYPTO_ARC4) += arc4.o obj-$(CONFIG_CRYPTO_TEA) += tea.o obj-$(CONFIG_CRYPTO_KHAZAD) += khazad.o diff --git a/crypto/cast6.c b/crypto/cast6_generic.c index 04264f574601..dc9309d70405 100644 --- a/crypto/cast6.c +++ b/crypto/cast6_generic.c @@ -25,24 +25,21 @@ #include <linux/errno.h> #include <linux/string.h> #include <linux/types.h> +#include <crypto/cast6.h> -#define CAST6_BLOCK_SIZE 16 -#define CAST6_MIN_KEY_SIZE 16 -#define CAST6_MAX_KEY_SIZE 32 - -struct cast6_ctx { - u32 Km[12][4]; - u8 Kr[12][4]; -}; +#define s1 cast6_s1 +#define s2 cast6_s2 +#define s3 cast6_s3 +#define s4 cast6_s4 #define F1(D, r, m) ((I = ((m) + (D))), (I = rol32(I, (r))), \ - (((s1[I >> 24] ^ s2[(I>>16)&0xff]) - s3[(I>>8)&0xff]) + s4[I&0xff])) + (((s1[I >> 24] ^ s2[(I>>16)&0xff]) - s3[(I>>8)&0xff]) + s4[I&0xff])) #define F2(D, r, m) ((I = ((m) ^ (D))), (I = rol32(I, (r))), \ - (((s1[I >> 24] - s2[(I>>16)&0xff]) + s3[(I>>8)&0xff]) ^ s4[I&0xff])) + (((s1[I >> 24] - s2[(I>>16)&0xff]) + s3[(I>>8)&0xff]) ^ s4[I&0xff])) #define F3(D, r, m) ((I = ((m) - (D))), (I = rol32(I, (r))), \ - (((s1[I >> 24] + s2[(I>>16)&0xff]) ^ s3[(I>>8)&0xff]) - s4[I&0xff])) + (((s1[I >> 24] + s2[(I>>16)&0xff]) ^ s3[(I>>8)&0xff]) - s4[I&0xff])) -static const u32 s1[256] = { +const u32 cast6_s1[256] = { 0x30fb40d4, 0x9fa0ff0b, 0x6beccd2f, 0x3f258c7a, 0x1e213f2f, 0x9c004dd3, 0x6003e540, 0xcf9fc949, 0xbfd4af27, 0x88bbbdb5, 0xe2034090, 0x98d09675, 0x6e63a0e0, @@ -108,8 +105,9 @@ static const u32 s1[256] = { 0x1a69e783, 0x02cc4843, 0xa2f7c579, 0x429ef47d, 0x427b169c, 0x5ac9f049, 0xdd8f0f00, 0x5c8165bf }; +EXPORT_SYMBOL_GPL(cast6_s1); -static const u32 s2[256] = { +const u32 cast6_s2[256] = { 0x1f201094, 0xef0ba75b, 0x69e3cf7e, 0x393f4380, 0xfe61cf7a, 0xeec5207a, 0x55889c94, 0x72fc0651, 0xada7ef79, 0x4e1d7235, 0xd55a63ce, 0xde0436ba, 0x99c430ef, @@ -175,8 +173,9 @@ static const u32 s2[256] = { 0x43d79572, 0x7e6dd07c, 0x06dfdf1e, 0x6c6cc4ef, 0x7160a539, 0x73bfbe70, 0x83877605, 0x4523ecf1 }; +EXPORT_SYMBOL_GPL(cast6_s2); -static const u32 s3[256] = { +const u32 cast6_s3[256] = { 0x8defc240, 0x25fa5d9f, 0xeb903dbf, 0xe810c907, 0x47607fff, 0x369fe44b, 0x8c1fc644, 0xaececa90, 0xbeb1f9bf, 0xeefbcaea, 0xe8cf1950, 0x51df07ae, 0x920e8806, @@ -242,8 +241,9 @@ static const u32 s3[256] = { 0xf7baefd5, 0x4142ed9c, 0xa4315c11, 0x83323ec5, 0xdfef4636, 0xa133c501, 0xe9d3531c, 0xee353783 }; +EXPORT_SYMBOL_GPL(cast6_s3); -static const u32 s4[256] = { +const u32 cast6_s4[256] = { 0x9db30420, 0x1fb6e9de, 0xa7be7bef, 0xd273a298, 0x4a4f7bdb, 0x64ad8c57, 0x85510443, 0xfa020ed1, 0x7e287aff, 0xe60fb663, 0x095f35a1, 0x79ebf120, 0xfd059d43, @@ -309,6 +309,7 @@ static const u32 s4[256] = { 0x7ae5290c, 0x3cb9536b, 0x851e20fe, 0x9833557e, 0x13ecf0b0, 0xd3ffb372, 0x3f85c5c1, 0x0aef7ed2 }; +EXPORT_SYMBOL_GPL(cast6_s4); static const u32 Tm[24][8] = { { 0x5a827999, 0xc95c653a, 0x383650db, 0xa7103c7c, 0x15ea281d, @@ -382,14 +383,12 @@ static void W(u32 *key, unsigned int i) key[7] ^= F2(key[0], Tr[i % 4][7], Tm[i][7]); } -static int cast6_setkey(struct crypto_tfm *tfm, const u8 *in_key, - unsigned key_len) +int __cast6_setkey(struct cast6_ctx *c, const u8 *in_key, + unsigned key_len, u32 *flags) { int i; u32 key[8]; __be32 p_key[8]; /* padded key */ - struct cast6_ctx *c = crypto_tfm_ctx(tfm); - u32 *flags = &tfm->crt_flags; if (key_len % 4 != 0) { *flags |= CRYPTO_TFM_RES_BAD_KEY_LEN; @@ -425,6 +424,14 @@ static int cast6_setkey(struct crypto_tfm *tfm, const u8 *in_key, return 0; } +EXPORT_SYMBOL_GPL(__cast6_setkey); + +int cast6_setkey(struct crypto_tfm *tfm, const u8 *key, unsigned int keylen) +{ + return __cast6_setkey(crypto_tfm_ctx(tfm), key, keylen, + &tfm->crt_flags); +} +EXPORT_SYMBOL_GPL(cast6_setkey); /*forward quad round*/ static void Q(u32 *block, u8 *Kr, u32 *Km) @@ -446,9 +453,8 @@ static void QBAR(u32 *block, u8 *Kr, u32 *Km) block[2] ^= F1(block[3], Kr[0], Km[0]); } -static void cast6_encrypt(struct crypto_tfm *tfm, u8 *outbuf, const u8 *inbuf) +void __cast6_encrypt(struct cast6_ctx *c, u8 *outbuf, const u8 *inbuf) { - struct cast6_ctx *c = crypto_tfm_ctx(tfm); const __be32 *src = (const __be32 *)inbuf; __be32 *dst = (__be32 *)outbuf; u32 block[4]; @@ -478,10 +484,15 @@ static void cast6_encrypt(struct crypto_tfm *tfm, u8 *outbuf, const u8 *inbuf) dst[2] = cpu_to_be32(block[2]); dst[3] = cpu_to_be32(block[3]); } +EXPORT_SYMBOL_GPL(__cast6_encrypt); -static void cast6_decrypt(struct crypto_tfm *tfm, u8 *outbuf, const u8 *inbuf) +static void cast6_encrypt(struct crypto_tfm *tfm, u8 *outbuf, const u8 *inbuf) +{ + __cast6_encrypt(crypto_tfm_ctx(tfm), outbuf, inbuf); +} + +void __cast6_decrypt(struct cast6_ctx *c, u8 *outbuf, const u8 *inbuf) { - struct cast6_ctx *c = crypto_tfm_ctx(tfm); const __be32 *src = (const __be32 *)inbuf; __be32 *dst = (__be32 *)outbuf; u32 block[4]; @@ -511,9 +522,17 @@ static void cast6_decrypt(struct crypto_tfm *tfm, u8 *outbuf, const u8 *inbuf) dst[2] = cpu_to_be32(block[2]); dst[3] = cpu_to_be32(block[3]); } +EXPORT_SYMBOL_GPL(__cast6_decrypt); + +static void cast6_decrypt(struct crypto_tfm *tfm, u8 *outbuf, const u8 *inbuf) +{ + __cast6_decrypt(crypto_tfm_ctx(tfm), outbuf, inbuf); +} static struct crypto_alg alg = { .cra_name = "cast6", + .cra_driver_name = "cast6-generic", + .cra_priority = 100, .cra_flags = CRYPTO_ALG_TYPE_CIPHER, .cra_blocksize = CAST6_BLOCK_SIZE, .cra_ctxsize = sizeof(struct cast6_ctx), @@ -544,3 +563,4 @@ module_exit(cast6_mod_fini); MODULE_LICENSE("GPL"); MODULE_DESCRIPTION("Cast6 Cipher Algorithm"); +MODULE_ALIAS("cast6"); diff --git a/include/crypto/cast6.h b/include/crypto/cast6.h new file mode 100644 index 000000000000..02dde6b77e15 --- /dev/null +++ b/include/crypto/cast6.h @@ -0,0 +1,23 @@ +#ifndef _CRYPTO_CAST6_H +#define _CRYPTO_CAST6_H + +#include <linux/types.h> +#include <linux/crypto.h> + +#define CAST6_BLOCK_SIZE 16 +#define CAST6_MIN_KEY_SIZE 16 +#define CAST6_MAX_KEY_SIZE 32 + +struct cast6_ctx { + u32 Km[12][4]; + u8 Kr[12][4]; +}; + +int __cast6_setkey(struct cast6_ctx *ctx, const u8 *key, + unsigned int keylen, u32 *flags); +int cast6_setkey(struct crypto_tfm *tfm, const u8 *key, unsigned int keylen); + +void __cast6_encrypt(struct cast6_ctx *ctx, u8 *dst, const u8 *src); +void __cast6_decrypt(struct cast6_ctx *ctx, u8 *dst, const u8 *src); + +#endif |