diff options
Diffstat (limited to 'drivers/usb/wusbcore/crypto.c')
| -rw-r--r-- | drivers/usb/wusbcore/crypto.c | 30 |
1 files changed, 16 insertions, 14 deletions
diff --git a/drivers/usb/wusbcore/crypto.c b/drivers/usb/wusbcore/crypto.c index 50ce80d60..8ed8e34c3 100644 --- a/drivers/usb/wusbcore/crypto.c +++ b/drivers/usb/wusbcore/crypto.c @@ -45,6 +45,7 @@ * funneled through AES are...16 bytes in size! */ +#include <crypto/skcipher.h> #include <linux/crypto.h> #include <linux/module.h> #include <linux/err.h> @@ -195,21 +196,22 @@ static void bytewise_xor(void *_bo, const void *_bi1, const void *_bi2, * NOTE: blen is not aligned to a block size, we'll pad zeros, that's * what sg[4] is for. Maybe there is a smarter way to do this. */ -static int wusb_ccm_mac(struct crypto_blkcipher *tfm_cbc, +static int wusb_ccm_mac(struct crypto_skcipher *tfm_cbc, struct crypto_cipher *tfm_aes, void *mic, const struct aes_ccm_nonce *n, const struct aes_ccm_label *a, const void *b, size_t blen) { int result = 0; - struct blkcipher_desc desc; + SKCIPHER_REQUEST_ON_STACK(req, tfm_cbc); struct aes_ccm_b0 b0; struct aes_ccm_b1 b1; struct aes_ccm_a ax; struct scatterlist sg[4], sg_dst; - void *iv, *dst_buf; - size_t ivsize, dst_size; + void *dst_buf; + size_t dst_size; const u8 bzero[16] = { 0 }; + u8 iv[crypto_skcipher_ivsize(tfm_cbc)]; size_t zero_padding; /* @@ -232,9 +234,7 @@ static int wusb_ccm_mac(struct crypto_blkcipher *tfm_cbc, goto error_dst_buf; } - iv = crypto_blkcipher_crt(tfm_cbc)->iv; - ivsize = crypto_blkcipher_ivsize(tfm_cbc); - memset(iv, 0, ivsize); + memset(iv, 0, sizeof(iv)); /* Setup B0 */ b0.flags = 0x59; /* Format B0 */ @@ -259,9 +259,11 @@ static int wusb_ccm_mac(struct crypto_blkcipher *tfm_cbc, sg_set_buf(&sg[3], bzero, zero_padding); sg_init_one(&sg_dst, dst_buf, dst_size); - desc.tfm = tfm_cbc; - desc.flags = 0; - result = crypto_blkcipher_encrypt(&desc, &sg_dst, sg, dst_size); + skcipher_request_set_tfm(req, tfm_cbc); + skcipher_request_set_callback(req, 0, NULL, NULL); + skcipher_request_set_crypt(req, sg, &sg_dst, dst_size, iv); + result = crypto_skcipher_encrypt(req); + skcipher_request_zero(req); if (result < 0) { printk(KERN_ERR "E: can't compute CBC-MAC tag (MIC): %d\n", result); @@ -301,18 +303,18 @@ ssize_t wusb_prf(void *out, size_t out_size, { ssize_t result, bytes = 0, bitr; struct aes_ccm_nonce n = *_n; - struct crypto_blkcipher *tfm_cbc; + struct crypto_skcipher *tfm_cbc; struct crypto_cipher *tfm_aes; u64 sfn = 0; __le64 sfn_le; - tfm_cbc = crypto_alloc_blkcipher("cbc(aes)", 0, CRYPTO_ALG_ASYNC); + tfm_cbc = crypto_alloc_skcipher("cbc(aes)", 0, CRYPTO_ALG_ASYNC); if (IS_ERR(tfm_cbc)) { result = PTR_ERR(tfm_cbc); printk(KERN_ERR "E: can't load CBC(AES): %d\n", (int)result); goto error_alloc_cbc; } - result = crypto_blkcipher_setkey(tfm_cbc, key, 16); + result = crypto_skcipher_setkey(tfm_cbc, key, 16); if (result < 0) { printk(KERN_ERR "E: can't set CBC key: %d\n", (int)result); goto error_setkey_cbc; @@ -345,7 +347,7 @@ error_setkey_aes: crypto_free_cipher(tfm_aes); error_alloc_aes: error_setkey_cbc: - crypto_free_blkcipher(tfm_cbc); + crypto_free_skcipher(tfm_cbc); error_alloc_cbc: return result; } |