diff options
Diffstat (limited to 'crypto/chacha20_generic.c')
| -rw-r--r-- | crypto/chacha20_generic.c | 28 |
1 files changed, 12 insertions, 16 deletions
diff --git a/crypto/chacha20_generic.c b/crypto/chacha20_generic.c index fa42e70..da9c899 100644 --- a/crypto/chacha20_generic.c +++ b/crypto/chacha20_generic.c @@ -13,14 +13,7 @@ #include <linux/crypto.h> #include <linux/kernel.h> #include <linux/module.h> - -#define CHACHA20_NONCE_SIZE 16 -#define CHACHA20_KEY_SIZE 32 -#define CHACHA20_BLOCK_SIZE 64 - -struct chacha20_ctx { - u32 key[8]; -}; +#include <crypto/chacha20.h> static inline u32 rotl32(u32 v, u8 n) { @@ -108,7 +101,7 @@ static void chacha20_docrypt(u32 *state, u8 *dst, const u8 *src, } } -static void chacha20_init(u32 *state, struct chacha20_ctx *ctx, u8 *iv) +void crypto_chacha20_init(u32 *state, struct chacha20_ctx *ctx, u8 *iv) { static const char constant[16] = "expand 32-byte k"; @@ -129,8 +122,9 @@ static void chacha20_init(u32 *state, struct chacha20_ctx *ctx, u8 *iv) state[14] = le32_to_cpuvp(iv + 8); state[15] = le32_to_cpuvp(iv + 12); } +EXPORT_SYMBOL_GPL(crypto_chacha20_init); -static int chacha20_setkey(struct crypto_tfm *tfm, const u8 *key, +int crypto_chacha20_setkey(struct crypto_tfm *tfm, const u8 *key, unsigned int keysize) { struct chacha20_ctx *ctx = crypto_tfm_ctx(tfm); @@ -144,8 +138,9 @@ static int chacha20_setkey(struct crypto_tfm *tfm, const u8 *key, return 0; } +EXPORT_SYMBOL_GPL(crypto_chacha20_setkey); -static int chacha20_crypt(struct blkcipher_desc *desc, struct scatterlist *dst, +int crypto_chacha20_crypt(struct blkcipher_desc *desc, struct scatterlist *dst, struct scatterlist *src, unsigned int nbytes) { struct blkcipher_walk walk; @@ -155,7 +150,7 @@ static int chacha20_crypt(struct blkcipher_desc *desc, struct scatterlist *dst, blkcipher_walk_init(&walk, dst, src, nbytes); err = blkcipher_walk_virt_block(desc, &walk, CHACHA20_BLOCK_SIZE); - chacha20_init(state, crypto_blkcipher_ctx(desc->tfm), walk.iv); + crypto_chacha20_init(state, crypto_blkcipher_ctx(desc->tfm), walk.iv); while (walk.nbytes >= CHACHA20_BLOCK_SIZE) { chacha20_docrypt(state, walk.dst.virt.addr, walk.src.virt.addr, @@ -172,6 +167,7 @@ static int chacha20_crypt(struct blkcipher_desc *desc, struct scatterlist *dst, return err; } +EXPORT_SYMBOL_GPL(crypto_chacha20_crypt); static struct crypto_alg alg = { .cra_name = "chacha20", @@ -187,11 +183,11 @@ static struct crypto_alg alg = { .blkcipher = { .min_keysize = CHACHA20_KEY_SIZE, .max_keysize = CHACHA20_KEY_SIZE, - .ivsize = CHACHA20_NONCE_SIZE, + .ivsize = CHACHA20_IV_SIZE, .geniv = "seqiv", - .setkey = chacha20_setkey, - .encrypt = chacha20_crypt, - .decrypt = chacha20_crypt, + .setkey = crypto_chacha20_setkey, + .encrypt = crypto_chacha20_crypt, + .decrypt = crypto_chacha20_crypt, }, }, }; |
