4.9-stable review patch. If anyone has any objections, please let me know.
------------------
From: Ilya Dryomov <idryomov@xxxxxxxxx>
commit 2b1e1a7cd0a615d57455567a549f9965023321b5 upstream.
Signed-off-by: Ilya Dryomov <idryomov@xxxxxxxxx>
Reviewed-by: Sage Weil <sage@xxxxxxxxxx>
Signed-off-by: Greg Kroah-Hartman <gregkh@xxxxxxxxxxxxxxxxxxx>
---
net/ceph/crypto.c | 369 ------------------------------------------------------
net/ceph/crypto.h | 14 --
2 files changed, 383 deletions(-)
--- a/net/ceph/crypto.c
+++ b/net/ceph/crypto.c
@@ -157,375 +157,6 @@ static void teardown_sgtable(struct sg_t
sg_free_table(sgt);
}
-static int ceph_aes_encrypt(const void *key, int key_len,
- void *dst, size_t *dst_len,
- const void *src, size_t src_len)
-{
- struct scatterlist sg_in[2], prealloc_sg;
- struct sg_table sg_out;
- struct crypto_skcipher *tfm = ceph_crypto_alloc_cipher();
- SKCIPHER_REQUEST_ON_STACK(req, tfm);
- int ret;
- char iv[AES_BLOCK_SIZE];
- size_t zero_padding = (0x10 - (src_len & 0x0f));
- char pad[16];
-
- if (IS_ERR(tfm))
- return PTR_ERR(tfm);
-
- memset(pad, zero_padding, zero_padding);
-
- *dst_len = src_len + zero_padding;
-
- sg_init_table(sg_in, 2);
- sg_set_buf(&sg_in[0], src, src_len);
- sg_set_buf(&sg_in[1], pad, zero_padding);
- ret = setup_sgtable(&sg_out, &prealloc_sg, dst, *dst_len);
- if (ret)
- goto out_tfm;
-
- crypto_skcipher_setkey((void *)tfm, key, key_len);
- memcpy(iv, aes_iv, AES_BLOCK_SIZE);
-
- skcipher_request_set_tfm(req, tfm);
- skcipher_request_set_callback(req, 0, NULL, NULL);
- skcipher_request_set_crypt(req, sg_in, sg_out.sgl,
- src_len + zero_padding, iv);
-
- /*
- print_hex_dump(KERN_ERR, "enc key: ", DUMP_PREFIX_NONE, 16, 1,
- key, key_len, 1);
- print_hex_dump(KERN_ERR, "enc src: ", DUMP_PREFIX_NONE, 16, 1,
- src, src_len, 1);
- print_hex_dump(KERN_ERR, "enc pad: ", DUMP_PREFIX_NONE, 16, 1,
- pad, zero_padding, 1);
- */
- ret = crypto_skcipher_encrypt(req);
- skcipher_request_zero(req);
- if (ret < 0) {
- pr_err("ceph_aes_crypt failed %d\n", ret);
- goto out_sg;
- }
- /*
- print_hex_dump(KERN_ERR, "enc out: ", DUMP_PREFIX_NONE, 16, 1,
- dst, *dst_len, 1);
- */
-
-out_sg:
- teardown_sgtable(&sg_out);
-out_tfm:
- crypto_free_skcipher(tfm);
- return ret;
-}
-
-static int ceph_aes_encrypt2(const void *key, int key_len, void *dst,
- size_t *dst_len,
- const void *src1, size_t src1_len,
- const void *src2, size_t src2_len)
-{
- struct scatterlist sg_in[3], prealloc_sg;
- struct sg_table sg_out;
- struct crypto_skcipher *tfm = ceph_crypto_alloc_cipher();
- SKCIPHER_REQUEST_ON_STACK(req, tfm);
- int ret;
- char iv[AES_BLOCK_SIZE];
- size_t zero_padding = (0x10 - ((src1_len + src2_len) & 0x0f));
- char pad[16];
-
- if (IS_ERR(tfm))
- return PTR_ERR(tfm);
-
- memset(pad, zero_padding, zero_padding);
-
- *dst_len = src1_len + src2_len + zero_padding;
-
- sg_init_table(sg_in, 3);
- sg_set_buf(&sg_in[0], src1, src1_len);
- sg_set_buf(&sg_in[1], src2, src2_len);
- sg_set_buf(&sg_in[2], pad, zero_padding);
- ret = setup_sgtable(&sg_out, &prealloc_sg, dst, *dst_len);
- if (ret)
- goto out_tfm;
-
- crypto_skcipher_setkey((void *)tfm, key, key_len);
- memcpy(iv, aes_iv, AES_BLOCK_SIZE);
-
- skcipher_request_set_tfm(req, tfm);
- skcipher_request_set_callback(req, 0, NULL, NULL);
- skcipher_request_set_crypt(req, sg_in, sg_out.sgl,
- src1_len + src2_len + zero_padding, iv);
-
- /*
- print_hex_dump(KERN_ERR, "enc key: ", DUMP_PREFIX_NONE, 16, 1,
- key, key_len, 1);
- print_hex_dump(KERN_ERR, "enc src1: ", DUMP_PREFIX_NONE, 16, 1,
- src1, src1_len, 1);
- print_hex_dump(KERN_ERR, "enc src2: ", DUMP_PREFIX_NONE, 16, 1,
- src2, src2_len, 1);
- print_hex_dump(KERN_ERR, "enc pad: ", DUMP_PREFIX_NONE, 16, 1,
- pad, zero_padding, 1);
- */
- ret = crypto_skcipher_encrypt(req);
- skcipher_request_zero(req);
- if (ret < 0) {
- pr_err("ceph_aes_crypt2 failed %d\n", ret);
- goto out_sg;
- }
- /*
- print_hex_dump(KERN_ERR, "enc out: ", DUMP_PREFIX_NONE, 16, 1,
- dst, *dst_len, 1);
- */
-
-out_sg:
- teardown_sgtable(&sg_out);
-out_tfm:
- crypto_free_skcipher(tfm);
- return ret;
-}
-
-static int ceph_aes_decrypt(const void *key, int key_len,
- void *dst, size_t *dst_len,
- const void *src, size_t src_len)
-{
- struct sg_table sg_in;
- struct scatterlist sg_out[2], prealloc_sg;
- struct crypto_skcipher *tfm = ceph_crypto_alloc_cipher();
- SKCIPHER_REQUEST_ON_STACK(req, tfm);
- char pad[16];
- char iv[AES_BLOCK_SIZE];
- int ret;
- int last_byte;
-
- if (IS_ERR(tfm))
- return PTR_ERR(tfm);
-
- sg_init_table(sg_out, 2);
- sg_set_buf(&sg_out[0], dst, *dst_len);
- sg_set_buf(&sg_out[1], pad, sizeof(pad));
- ret = setup_sgtable(&sg_in, &prealloc_sg, src, src_len);
- if (ret)
- goto out_tfm;
-
- crypto_skcipher_setkey((void *)tfm, key, key_len);
- memcpy(iv, aes_iv, AES_BLOCK_SIZE);
-
- skcipher_request_set_tfm(req, tfm);
- skcipher_request_set_callback(req, 0, NULL, NULL);
- skcipher_request_set_crypt(req, sg_in.sgl, sg_out,
- src_len, iv);
-
- /*
- print_hex_dump(KERN_ERR, "dec key: ", DUMP_PREFIX_NONE, 16, 1,
- key, key_len, 1);
- print_hex_dump(KERN_ERR, "dec in: ", DUMP_PREFIX_NONE, 16, 1,
- src, src_len, 1);
- */
- ret = crypto_skcipher_decrypt(req);
- skcipher_request_zero(req);
- if (ret < 0) {
- pr_err("ceph_aes_decrypt failed %d\n", ret);
- goto out_sg;
- }
-
- if (src_len <= *dst_len)
- last_byte = ((char *)dst)[src_len - 1];
- else
- last_byte = pad[src_len - *dst_len - 1];
- if (last_byte <= 16 && src_len >= last_byte) {
- *dst_len = src_len - last_byte;
- } else {
- pr_err("ceph_aes_decrypt got bad padding %d on src len %d\n",
- last_byte, (int)src_len);
- return -EPERM; /* bad padding */
- }
- /*
- print_hex_dump(KERN_ERR, "dec out: ", DUMP_PREFIX_NONE, 16, 1,
- dst, *dst_len, 1);
- */
-
-out_sg:
- teardown_sgtable(&sg_in);
-out_tfm:
- crypto_free_skcipher(tfm);
- return ret;
-}
-
-static int ceph_aes_decrypt2(const void *key, int key_len,
- void *dst1, size_t *dst1_len,
- void *dst2, size_t *dst2_len,
- const void *src, size_t src_len)
-{
- struct sg_table sg_in;
- struct scatterlist sg_out[3], prealloc_sg;
- struct crypto_skcipher *tfm = ceph_crypto_alloc_cipher();
- SKCIPHER_REQUEST_ON_STACK(req, tfm);
- char pad[16];
- char iv[AES_BLOCK_SIZE];
- int ret;
- int last_byte;
-
- if (IS_ERR(tfm))
- return PTR_ERR(tfm);
-
- sg_init_table(sg_out, 3);
- sg_set_buf(&sg_out[0], dst1, *dst1_len);
- sg_set_buf(&sg_out[1], dst2, *dst2_len);
- sg_set_buf(&sg_out[2], pad, sizeof(pad));
- ret = setup_sgtable(&sg_in, &prealloc_sg, src, src_len);
- if (ret)
- goto out_tfm;
-
- crypto_skcipher_setkey((void *)tfm, key, key_len);
- memcpy(iv, aes_iv, AES_BLOCK_SIZE);
-
- skcipher_request_set_tfm(req, tfm);
- skcipher_request_set_callback(req, 0, NULL, NULL);
- skcipher_request_set_crypt(req, sg_in.sgl, sg_out,
- src_len, iv);
-
- /*
- print_hex_dump(KERN_ERR, "dec key: ", DUMP_PREFIX_NONE, 16, 1,
- key, key_len, 1);
- print_hex_dump(KERN_ERR, "dec in: ", DUMP_PREFIX_NONE, 16, 1,
- src, src_len, 1);
- */
- ret = crypto_skcipher_decrypt(req);
- skcipher_request_zero(req);
- if (ret < 0) {
- pr_err("ceph_aes_decrypt failed %d\n", ret);
- goto out_sg;
- }
-
- if (src_len <= *dst1_len)
- last_byte = ((char *)dst1)[src_len - 1];
- else if (src_len <= *dst1_len + *dst2_len)
- last_byte = ((char *)dst2)[src_len - *dst1_len - 1];
- else
- last_byte = pad[src_len - *dst1_len - *dst2_len - 1];
- if (last_byte <= 16 && src_len >= last_byte) {
- src_len -= last_byte;
- } else {
- pr_err("ceph_aes_decrypt got bad padding %d on src len %d\n",
- last_byte, (int)src_len);
- return -EPERM; /* bad padding */
- }
-
- if (src_len < *dst1_len) {
- *dst1_len = src_len;
- *dst2_len = 0;
- } else {
- *dst2_len = src_len - *dst1_len;
- }
- /*
- print_hex_dump(KERN_ERR, "dec out1: ", DUMP_PREFIX_NONE, 16, 1,
- dst1, *dst1_len, 1);
- print_hex_dump(KERN_ERR, "dec out2: ", DUMP_PREFIX_NONE, 16, 1,
- dst2, *dst2_len, 1);
- */
-
-out_sg:
- teardown_sgtable(&sg_in);
-out_tfm:
- crypto_free_skcipher(tfm);
- return ret;
-}
-
-
-int ceph_decrypt(struct ceph_crypto_key *secret, void *dst, size_t *dst_len,
- const void *src, size_t src_len)
-{
- switch (secret->type) {
- case CEPH_CRYPTO_NONE:
- if (*dst_len < src_len)
- return -ERANGE;
- memcpy(dst, src, src_len);
- *dst_len = src_len;
- return 0;
-
- case CEPH_CRYPTO_AES:
- return ceph_aes_decrypt(secret->key, secret->len, dst,
- dst_len, src, src_len);
-
- default:
- return -EINVAL;
- }
-}
-
-int ceph_decrypt2(struct ceph_crypto_key *secret,
- void *dst1, size_t *dst1_len,
- void *dst2, size_t *dst2_len,
- const void *src, size_t src_len)
-{
- size_t t;
-
- switch (secret->type) {
- case CEPH_CRYPTO_NONE:
- if (*dst1_len + *dst2_len < src_len)
- return -ERANGE;
- t = min(*dst1_len, src_len);
- memcpy(dst1, src, t);
- *dst1_len = t;
- src += t;
- src_len -= t;
- if (src_len) {
- t = min(*dst2_len, src_len);
- memcpy(dst2, src, t);
- *dst2_len = t;
- }
- return 0;
-
- case CEPH_CRYPTO_AES:
- return ceph_aes_decrypt2(secret->key, secret->len,
- dst1, dst1_len, dst2, dst2_len,
- src, src_len);
-
- default:
- return -EINVAL;
- }
-}
-
-int ceph_encrypt(struct ceph_crypto_key *secret, void *dst, size_t *dst_len,
- const void *src, size_t src_len)
-{
- switch (secret->type) {
- case CEPH_CRYPTO_NONE:
- if (*dst_len < src_len)
- return -ERANGE;
- memcpy(dst, src, src_len);
- *dst_len = src_len;
- return 0;
-
- case CEPH_CRYPTO_AES:
- return ceph_aes_encrypt(secret->key, secret->len, dst,
- dst_len, src, src_len);
-
- default:
- return -EINVAL;
- }
-}
-
-int ceph_encrypt2(struct ceph_crypto_key *secret, void *dst, size_t *dst_len,
- const void *src1, size_t src1_len,
- const void *src2, size_t src2_len)
-{
- switch (secret->type) {
- case CEPH_CRYPTO_NONE:
- if (*dst_len < src1_len + src2_len)
- return -ERANGE;
- memcpy(dst, src1, src1_len);
- memcpy(dst + src1_len, src2, src2_len);
- *dst_len = src1_len + src2_len;
- return 0;
-
- case CEPH_CRYPTO_AES:
- return ceph_aes_encrypt2(secret->key, secret->len, dst, dst_len,
- src1, src1_len, src2, src2_len);
-
- default:
- return -EINVAL;
- }
-}
-
static int ceph_aes_crypt(const struct ceph_crypto_key *key, bool encrypt,
void *buf, int buf_len, int in_len, int *pout_len)
{
--- a/net/ceph/crypto.h
+++ b/net/ceph/crypto.h
@@ -29,20 +29,6 @@ int ceph_crypto_key_decode(struct ceph_c
int ceph_crypto_key_unarmor(struct ceph_crypto_key *key, const char *in);
/* crypto.c */
-int ceph_decrypt(struct ceph_crypto_key *secret,
- void *dst, size_t *dst_len,
- const void *src, size_t src_len);
-int ceph_encrypt(struct ceph_crypto_key *secret,
- void *dst, size_t *dst_len,
- const void *src, size_t src_len);
-int ceph_decrypt2(struct ceph_crypto_key *secret,
- void *dst1, size_t *dst1_len,
- void *dst2, size_t *dst2_len,
- const void *src, size_t src_len);
-int ceph_encrypt2(struct ceph_crypto_key *secret,
- void *dst, size_t *dst_len,
- const void *src1, size_t src1_len,
- const void *src2, size_t src2_len);
int ceph_crypt(const struct ceph_crypto_key *key, bool encrypt,
void *buf, int buf_len, int in_len, int *pout_len);
int ceph_crypto_init(void);
--
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