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author | Jeff Garzik <jeff@garzik.org> | 2006-09-24 01:52:47 -0400 |
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committer | Jeff Garzik <jeff@garzik.org> | 2006-09-24 01:52:47 -0400 |
commit | 23930fa1cebfea6f79881c588ccd1b0781e49e3f (patch) | |
tree | 36d29e3f83661c4f5f45b6f74ac0d5f9886867a8 /drivers/net/ppp_mppe.c | |
parent | 36b35a5be0e4b406acd816e2122d153e875105be (diff) | |
parent | 4f5537de7c1531398e84e18a24f667e49cc94208 (diff) | |
download | kernel_samsung_smdk4412-23930fa1cebfea6f79881c588ccd1b0781e49e3f.zip kernel_samsung_smdk4412-23930fa1cebfea6f79881c588ccd1b0781e49e3f.tar.gz kernel_samsung_smdk4412-23930fa1cebfea6f79881c588ccd1b0781e49e3f.tar.bz2 |
Merge branch 'master' into upstream
Diffstat (limited to 'drivers/net/ppp_mppe.c')
-rw-r--r-- | drivers/net/ppp_mppe.c | 68 |
1 files changed, 42 insertions, 26 deletions
diff --git a/drivers/net/ppp_mppe.c b/drivers/net/ppp_mppe.c index 51ff9a9..f3655fd 100644 --- a/drivers/net/ppp_mppe.c +++ b/drivers/net/ppp_mppe.c @@ -43,6 +43,7 @@ * deprecated in 2.6 */ +#include <linux/err.h> #include <linux/module.h> #include <linux/kernel.h> #include <linux/version.h> @@ -64,12 +65,13 @@ MODULE_LICENSE("Dual BSD/GPL"); MODULE_ALIAS("ppp-compress-" __stringify(CI_MPPE)); MODULE_VERSION("1.0.2"); -static void +static unsigned int setup_sg(struct scatterlist *sg, const void *address, unsigned int length) { sg[0].page = virt_to_page(address); sg[0].offset = offset_in_page(address); sg[0].length = length; + return length; } #define SHA1_PAD_SIZE 40 @@ -95,8 +97,8 @@ static inline void sha_pad_init(struct sha_pad *shapad) * State for an MPPE (de)compressor. */ struct ppp_mppe_state { - struct crypto_tfm *arc4; - struct crypto_tfm *sha1; + struct crypto_blkcipher *arc4; + struct crypto_hash *sha1; unsigned char *sha1_digest; unsigned char master_key[MPPE_MAX_KEY_LEN]; unsigned char session_key[MPPE_MAX_KEY_LEN]; @@ -136,14 +138,21 @@ struct ppp_mppe_state { */ static void get_new_key_from_sha(struct ppp_mppe_state * state, unsigned char *InterimKey) { + struct hash_desc desc; struct scatterlist sg[4]; + unsigned int nbytes; - setup_sg(&sg[0], state->master_key, state->keylen); - setup_sg(&sg[1], sha_pad->sha_pad1, sizeof(sha_pad->sha_pad1)); - setup_sg(&sg[2], state->session_key, state->keylen); - setup_sg(&sg[3], sha_pad->sha_pad2, sizeof(sha_pad->sha_pad2)); + nbytes = setup_sg(&sg[0], state->master_key, state->keylen); + nbytes += setup_sg(&sg[1], sha_pad->sha_pad1, + sizeof(sha_pad->sha_pad1)); + nbytes += setup_sg(&sg[2], state->session_key, state->keylen); + nbytes += setup_sg(&sg[3], sha_pad->sha_pad2, + sizeof(sha_pad->sha_pad2)); - crypto_digest_digest (state->sha1, sg, 4, state->sha1_digest); + desc.tfm = state->sha1; + desc.flags = 0; + + crypto_hash_digest(&desc, sg, nbytes, state->sha1_digest); memcpy(InterimKey, state->sha1_digest, state->keylen); } @@ -156,14 +165,15 @@ static void mppe_rekey(struct ppp_mppe_state * state, int initial_key) { unsigned char InterimKey[MPPE_MAX_KEY_LEN]; struct scatterlist sg_in[1], sg_out[1]; + struct blkcipher_desc desc = { .tfm = state->arc4 }; get_new_key_from_sha(state, InterimKey); if (!initial_key) { - crypto_cipher_setkey(state->arc4, InterimKey, state->keylen); + crypto_blkcipher_setkey(state->arc4, InterimKey, state->keylen); setup_sg(sg_in, InterimKey, state->keylen); setup_sg(sg_out, state->session_key, state->keylen); - if (crypto_cipher_encrypt(state->arc4, sg_out, sg_in, - state->keylen) != 0) { + if (crypto_blkcipher_encrypt(&desc, sg_out, sg_in, + state->keylen) != 0) { printk(KERN_WARNING "mppe_rekey: cipher_encrypt failed\n"); } } else { @@ -175,7 +185,7 @@ static void mppe_rekey(struct ppp_mppe_state * state, int initial_key) state->session_key[1] = 0x26; state->session_key[2] = 0x9e; } - crypto_cipher_setkey(state->arc4, state->session_key, state->keylen); + crypto_blkcipher_setkey(state->arc4, state->session_key, state->keylen); } /* @@ -196,15 +206,19 @@ static void *mppe_alloc(unsigned char *options, int optlen) memset(state, 0, sizeof(*state)); - state->arc4 = crypto_alloc_tfm("arc4", 0); - if (!state->arc4) + state->arc4 = crypto_alloc_blkcipher("ecb(arc4)", 0, CRYPTO_ALG_ASYNC); + if (IS_ERR(state->arc4)) { + state->arc4 = NULL; goto out_free; + } - state->sha1 = crypto_alloc_tfm("sha1", 0); - if (!state->sha1) + state->sha1 = crypto_alloc_hash("sha1", 0, CRYPTO_ALG_ASYNC); + if (IS_ERR(state->sha1)) { + state->sha1 = NULL; goto out_free; + } - digestsize = crypto_tfm_alg_digestsize(state->sha1); + digestsize = crypto_hash_digestsize(state->sha1); if (digestsize < MPPE_MAX_KEY_LEN) goto out_free; @@ -229,9 +243,9 @@ static void *mppe_alloc(unsigned char *options, int optlen) if (state->sha1_digest) kfree(state->sha1_digest); if (state->sha1) - crypto_free_tfm(state->sha1); + crypto_free_hash(state->sha1); if (state->arc4) - crypto_free_tfm(state->arc4); + crypto_free_blkcipher(state->arc4); kfree(state); out: return NULL; @@ -247,9 +261,9 @@ static void mppe_free(void *arg) if (state->sha1_digest) kfree(state->sha1_digest); if (state->sha1) - crypto_free_tfm(state->sha1); + crypto_free_hash(state->sha1); if (state->arc4) - crypto_free_tfm(state->arc4); + crypto_free_blkcipher(state->arc4); kfree(state); } } @@ -356,6 +370,7 @@ mppe_compress(void *arg, unsigned char *ibuf, unsigned char *obuf, int isize, int osize) { struct ppp_mppe_state *state = (struct ppp_mppe_state *) arg; + struct blkcipher_desc desc = { .tfm = state->arc4 }; int proto; struct scatterlist sg_in[1], sg_out[1]; @@ -413,7 +428,7 @@ mppe_compress(void *arg, unsigned char *ibuf, unsigned char *obuf, /* Encrypt packet */ setup_sg(sg_in, ibuf, isize); setup_sg(sg_out, obuf, osize); - if (crypto_cipher_encrypt(state->arc4, sg_out, sg_in, isize) != 0) { + if (crypto_blkcipher_encrypt(&desc, sg_out, sg_in, isize) != 0) { printk(KERN_DEBUG "crypto_cypher_encrypt failed\n"); return -1; } @@ -462,6 +477,7 @@ mppe_decompress(void *arg, unsigned char *ibuf, int isize, unsigned char *obuf, int osize) { struct ppp_mppe_state *state = (struct ppp_mppe_state *) arg; + struct blkcipher_desc desc = { .tfm = state->arc4 }; unsigned ccount; int flushed = MPPE_BITS(ibuf) & MPPE_BIT_FLUSHED; int sanity = 0; @@ -599,7 +615,7 @@ mppe_decompress(void *arg, unsigned char *ibuf, int isize, unsigned char *obuf, */ setup_sg(sg_in, ibuf, 1); setup_sg(sg_out, obuf, 1); - if (crypto_cipher_decrypt(state->arc4, sg_out, sg_in, 1) != 0) { + if (crypto_blkcipher_decrypt(&desc, sg_out, sg_in, 1) != 0) { printk(KERN_DEBUG "crypto_cypher_decrypt failed\n"); return DECOMP_ERROR; } @@ -619,7 +635,7 @@ mppe_decompress(void *arg, unsigned char *ibuf, int isize, unsigned char *obuf, /* And finally, decrypt the rest of the packet. */ setup_sg(sg_in, ibuf + 1, isize - 1); setup_sg(sg_out, obuf + 1, osize - 1); - if (crypto_cipher_decrypt(state->arc4, sg_out, sg_in, isize - 1) != 0) { + if (crypto_blkcipher_decrypt(&desc, sg_out, sg_in, isize - 1)) { printk(KERN_DEBUG "crypto_cypher_decrypt failed\n"); return DECOMP_ERROR; } @@ -694,8 +710,8 @@ static struct compressor ppp_mppe = { static int __init ppp_mppe_init(void) { int answer; - if (!(crypto_alg_available("arc4", 0) && - crypto_alg_available("sha1", 0))) + if (!(crypto_has_blkcipher("ecb(arc4)", 0, CRYPTO_ALG_ASYNC) && + crypto_has_hash("sha1", 0, CRYPTO_ALG_ASYNC))) return -ENODEV; sha_pad = kmalloc(sizeof(struct sha_pad), GFP_KERNEL); |