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libceph: switch ceph_x_encrypt() to ceph_crypt()
Signed-off-by: Ilya Dryomov <idryomov@gmail.com> Reviewed-by: Sage Weil <sage@redhat.com>
This commit is contained in:
parent
4eb4517ce7
commit
d03857c63b
1 changed files with 37 additions and 34 deletions
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@ -49,22 +49,24 @@ static int ceph_x_encrypt_buflen(int ilen)
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return ceph_x_encrypt_offset() + ilen + 16;
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}
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static int ceph_x_encrypt(struct ceph_crypto_key *secret,
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void *ibuf, int ilen, void *obuf, size_t olen)
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static int ceph_x_encrypt(struct ceph_crypto_key *secret, void *buf,
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int buf_len, int plaintext_len)
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{
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struct ceph_x_encrypt_header head = {
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.struct_v = 1,
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.magic = cpu_to_le64(CEPHX_ENC_MAGIC)
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};
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size_t len = olen - sizeof(u32);
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struct ceph_x_encrypt_header *hdr = buf + sizeof(u32);
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int ciphertext_len;
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int ret;
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ret = ceph_encrypt2(secret, obuf + sizeof(u32), &len,
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&head, sizeof(head), ibuf, ilen);
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hdr->struct_v = 1;
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hdr->magic = cpu_to_le64(CEPHX_ENC_MAGIC);
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ret = ceph_crypt(secret, true, buf + sizeof(u32), buf_len - sizeof(u32),
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plaintext_len + sizeof(struct ceph_x_encrypt_header),
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&ciphertext_len);
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if (ret)
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return ret;
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ceph_encode_32(&obuf, len);
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return len + sizeof(u32);
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ceph_encode_32(&buf, ciphertext_len);
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return sizeof(u32) + ciphertext_len;
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}
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static int ceph_x_decrypt(struct ceph_crypto_key *secret,
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@ -296,7 +298,7 @@ static int ceph_x_build_authorizer(struct ceph_auth_client *ac,
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{
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int maxlen;
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struct ceph_x_authorize_a *msg_a;
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struct ceph_x_authorize_b msg_b;
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struct ceph_x_authorize_b *msg_b;
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void *p, *end;
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int ret;
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int ticket_blob_len =
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@ -311,7 +313,7 @@ static int ceph_x_build_authorizer(struct ceph_auth_client *ac,
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goto out_au;
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maxlen = sizeof(*msg_a) + ticket_blob_len +
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ceph_x_encrypt_buflen(sizeof(msg_b));
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ceph_x_encrypt_buflen(sizeof(*msg_b));
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dout(" need len %d\n", maxlen);
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if (au->buf && au->buf->alloc_len < maxlen) {
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ceph_buffer_put(au->buf);
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@ -345,11 +347,11 @@ static int ceph_x_build_authorizer(struct ceph_auth_client *ac,
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p += ticket_blob_len;
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end = au->buf->vec.iov_base + au->buf->vec.iov_len;
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msg_b = p + ceph_x_encrypt_offset();
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msg_b->struct_v = 1;
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get_random_bytes(&au->nonce, sizeof(au->nonce));
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msg_b.struct_v = 1;
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msg_b.nonce = cpu_to_le64(au->nonce);
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ret = ceph_x_encrypt(&au->session_key, &msg_b, sizeof(msg_b),
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p, end - p);
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msg_b->nonce = cpu_to_le64(au->nonce);
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ret = ceph_x_encrypt(&au->session_key, p, end - p, sizeof(*msg_b));
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if (ret < 0)
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goto out_au;
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@ -455,8 +457,9 @@ static int ceph_x_build_request(struct ceph_auth_client *ac,
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if (need & CEPH_ENTITY_TYPE_AUTH) {
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struct ceph_x_authenticate *auth = (void *)(head + 1);
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void *p = auth + 1;
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struct ceph_x_challenge_blob tmp;
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char tmp_enc[40];
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void *enc_buf = xi->auth_authorizer.enc_buf;
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struct ceph_x_challenge_blob *blob = enc_buf +
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ceph_x_encrypt_offset();
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u64 *u;
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if (p > end)
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@ -467,16 +470,16 @@ static int ceph_x_build_request(struct ceph_auth_client *ac,
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/* encrypt and hash */
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get_random_bytes(&auth->client_challenge, sizeof(u64));
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tmp.client_challenge = auth->client_challenge;
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tmp.server_challenge = cpu_to_le64(xi->server_challenge);
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ret = ceph_x_encrypt(&xi->secret, &tmp, sizeof(tmp),
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tmp_enc, sizeof(tmp_enc));
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blob->client_challenge = auth->client_challenge;
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blob->server_challenge = cpu_to_le64(xi->server_challenge);
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ret = ceph_x_encrypt(&xi->secret, enc_buf, CEPHX_AU_ENC_BUF_LEN,
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sizeof(*blob));
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if (ret < 0)
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return ret;
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auth->struct_v = 1;
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auth->key = 0;
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for (u = (u64 *)tmp_enc; u + 1 <= (u64 *)(tmp_enc + ret); u++)
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for (u = (u64 *)enc_buf; u + 1 <= (u64 *)(enc_buf + ret); u++)
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auth->key ^= *(__le64 *)u;
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dout(" server_challenge %llx client_challenge %llx key %llx\n",
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xi->server_challenge, le64_to_cpu(auth->client_challenge),
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@ -710,27 +713,27 @@ static void ceph_x_invalidate_authorizer(struct ceph_auth_client *ac,
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static int calc_signature(struct ceph_x_authorizer *au, struct ceph_msg *msg,
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__le64 *psig)
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{
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char tmp_enc[40];
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void *enc_buf = au->enc_buf;
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struct {
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__le32 len;
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__le32 header_crc;
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__le32 front_crc;
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__le32 middle_crc;
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__le32 data_crc;
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} __packed sigblock;
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} __packed *sigblock = enc_buf + ceph_x_encrypt_offset();
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int ret;
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sigblock.len = cpu_to_le32(4*sizeof(u32));
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sigblock.header_crc = msg->hdr.crc;
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sigblock.front_crc = msg->footer.front_crc;
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sigblock.middle_crc = msg->footer.middle_crc;
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sigblock.data_crc = msg->footer.data_crc;
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ret = ceph_x_encrypt(&au->session_key, &sigblock, sizeof(sigblock),
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tmp_enc, sizeof(tmp_enc));
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sigblock->len = cpu_to_le32(4*sizeof(u32));
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sigblock->header_crc = msg->hdr.crc;
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sigblock->front_crc = msg->footer.front_crc;
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sigblock->middle_crc = msg->footer.middle_crc;
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sigblock->data_crc = msg->footer.data_crc;
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ret = ceph_x_encrypt(&au->session_key, enc_buf, CEPHX_AU_ENC_BUF_LEN,
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sizeof(*sigblock));
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if (ret < 0)
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return ret;
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*psig = *(__le64 *)(tmp_enc + sizeof(u32));
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*psig = *(__le64 *)(enc_buf + sizeof(u32));
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return 0;
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}
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