From d03857c63bb036edff0aa7a107276360173aca4e Mon Sep 17 00:00:00 2001 From: Ilya Dryomov Date: Fri, 2 Dec 2016 16:35:07 +0100 Subject: [PATCH] libceph: switch ceph_x_encrypt() to ceph_crypt() Signed-off-by: Ilya Dryomov Reviewed-by: Sage Weil --- net/ceph/auth_x.c | 71 ++++++++++++++++++++++++----------------------- 1 file changed, 37 insertions(+), 34 deletions(-) diff --git a/net/ceph/auth_x.c b/net/ceph/auth_x.c index 78c1675b0df7..a13ce443073b 100644 --- a/net/ceph/auth_x.c +++ b/net/ceph/auth_x.c @@ -49,22 +49,24 @@ static int ceph_x_encrypt_buflen(int ilen) return ceph_x_encrypt_offset() + ilen + 16; } -static int ceph_x_encrypt(struct ceph_crypto_key *secret, - void *ibuf, int ilen, void *obuf, size_t olen) +static int ceph_x_encrypt(struct ceph_crypto_key *secret, void *buf, + int buf_len, int plaintext_len) { - struct ceph_x_encrypt_header head = { - .struct_v = 1, - .magic = cpu_to_le64(CEPHX_ENC_MAGIC) - }; - size_t len = olen - sizeof(u32); + struct ceph_x_encrypt_header *hdr = buf + sizeof(u32); + int ciphertext_len; int ret; - ret = ceph_encrypt2(secret, obuf + sizeof(u32), &len, - &head, sizeof(head), ibuf, ilen); + hdr->struct_v = 1; + hdr->magic = cpu_to_le64(CEPHX_ENC_MAGIC); + + ret = ceph_crypt(secret, true, buf + sizeof(u32), buf_len - sizeof(u32), + plaintext_len + sizeof(struct ceph_x_encrypt_header), + &ciphertext_len); if (ret) return ret; - ceph_encode_32(&obuf, len); - return len + sizeof(u32); + + ceph_encode_32(&buf, ciphertext_len); + return sizeof(u32) + ciphertext_len; } static int ceph_x_decrypt(struct ceph_crypto_key *secret, @@ -296,7 +298,7 @@ static int ceph_x_build_authorizer(struct ceph_auth_client *ac, { int maxlen; struct ceph_x_authorize_a *msg_a; - struct ceph_x_authorize_b msg_b; + struct ceph_x_authorize_b *msg_b; void *p, *end; int ret; int ticket_blob_len = @@ -311,7 +313,7 @@ static int ceph_x_build_authorizer(struct ceph_auth_client *ac, goto out_au; maxlen = sizeof(*msg_a) + ticket_blob_len + - ceph_x_encrypt_buflen(sizeof(msg_b)); + ceph_x_encrypt_buflen(sizeof(*msg_b)); dout(" need len %d\n", maxlen); if (au->buf && au->buf->alloc_len < maxlen) { ceph_buffer_put(au->buf); @@ -345,11 +347,11 @@ static int ceph_x_build_authorizer(struct ceph_auth_client *ac, p += ticket_blob_len; end = au->buf->vec.iov_base + au->buf->vec.iov_len; + msg_b = p + ceph_x_encrypt_offset(); + msg_b->struct_v = 1; get_random_bytes(&au->nonce, sizeof(au->nonce)); - msg_b.struct_v = 1; - msg_b.nonce = cpu_to_le64(au->nonce); - ret = ceph_x_encrypt(&au->session_key, &msg_b, sizeof(msg_b), - p, end - p); + msg_b->nonce = cpu_to_le64(au->nonce); + ret = ceph_x_encrypt(&au->session_key, p, end - p, sizeof(*msg_b)); if (ret < 0) goto out_au; @@ -455,8 +457,9 @@ static int ceph_x_build_request(struct ceph_auth_client *ac, if (need & CEPH_ENTITY_TYPE_AUTH) { struct ceph_x_authenticate *auth = (void *)(head + 1); void *p = auth + 1; - struct ceph_x_challenge_blob tmp; - char tmp_enc[40]; + void *enc_buf = xi->auth_authorizer.enc_buf; + struct ceph_x_challenge_blob *blob = enc_buf + + ceph_x_encrypt_offset(); u64 *u; if (p > end) @@ -467,16 +470,16 @@ static int ceph_x_build_request(struct ceph_auth_client *ac, /* encrypt and hash */ get_random_bytes(&auth->client_challenge, sizeof(u64)); - tmp.client_challenge = auth->client_challenge; - tmp.server_challenge = cpu_to_le64(xi->server_challenge); - ret = ceph_x_encrypt(&xi->secret, &tmp, sizeof(tmp), - tmp_enc, sizeof(tmp_enc)); + blob->client_challenge = auth->client_challenge; + blob->server_challenge = cpu_to_le64(xi->server_challenge); + ret = ceph_x_encrypt(&xi->secret, enc_buf, CEPHX_AU_ENC_BUF_LEN, + sizeof(*blob)); if (ret < 0) return ret; auth->struct_v = 1; auth->key = 0; - for (u = (u64 *)tmp_enc; u + 1 <= (u64 *)(tmp_enc + ret); u++) + for (u = (u64 *)enc_buf; u + 1 <= (u64 *)(enc_buf + ret); u++) auth->key ^= *(__le64 *)u; dout(" server_challenge %llx client_challenge %llx key %llx\n", xi->server_challenge, le64_to_cpu(auth->client_challenge), @@ -710,27 +713,27 @@ static void ceph_x_invalidate_authorizer(struct ceph_auth_client *ac, static int calc_signature(struct ceph_x_authorizer *au, struct ceph_msg *msg, __le64 *psig) { - char tmp_enc[40]; + void *enc_buf = au->enc_buf; struct { __le32 len; __le32 header_crc; __le32 front_crc; __le32 middle_crc; __le32 data_crc; - } __packed sigblock; + } __packed *sigblock = enc_buf + ceph_x_encrypt_offset(); int ret; - sigblock.len = cpu_to_le32(4*sizeof(u32)); - sigblock.header_crc = msg->hdr.crc; - sigblock.front_crc = msg->footer.front_crc; - sigblock.middle_crc = msg->footer.middle_crc; - sigblock.data_crc = msg->footer.data_crc; - ret = ceph_x_encrypt(&au->session_key, &sigblock, sizeof(sigblock), - tmp_enc, sizeof(tmp_enc)); + sigblock->len = cpu_to_le32(4*sizeof(u32)); + sigblock->header_crc = msg->hdr.crc; + sigblock->front_crc = msg->footer.front_crc; + sigblock->middle_crc = msg->footer.middle_crc; + sigblock->data_crc = msg->footer.data_crc; + ret = ceph_x_encrypt(&au->session_key, enc_buf, CEPHX_AU_ENC_BUF_LEN, + sizeof(*sigblock)); if (ret < 0) return ret; - *psig = *(__le64 *)(tmp_enc + sizeof(u32)); + *psig = *(__le64 *)(enc_buf + sizeof(u32)); return 0; } -- 2.39.5