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| author | Kevin Coffman <kwc@citi.umich.edu> | 2010-03-17 13:02:52 -0400 |
|---|---|---|
| committer | Trond Myklebust <Trond.Myklebust@netapp.com> | 2010-05-14 15:09:16 -0400 |
| commit | e1f6c07b1160ef28e8754d12e6c03288dd9d5ca8 (patch) | |
| tree | 5be1f97a1a51feaed4bed2b4a83a568c94921faf /net/sunrpc/auth_gss/gss_krb5_seal.c | |
| parent | 81d4a4333a1dfd6070f046265d928bb4c79aff88 (diff) | |
| download | lwn-e1f6c07b1160ef28e8754d12e6c03288dd9d5ca8.tar.gz lwn-e1f6c07b1160ef28e8754d12e6c03288dd9d5ca8.zip | |
gss_krb5: add ability to have a keyed checksum (hmac)
Encryption types besides DES may use a keyed checksum (hmac).
Modify the make_checksum() function to allow for a key
and take care of enctype-specific processing such as truncating
the resulting hash.
Signed-off-by: Kevin Coffman <kwc@citi.umich.edu>
Signed-off-by: Steve Dickson <steved@redhat.com>
Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
Diffstat (limited to 'net/sunrpc/auth_gss/gss_krb5_seal.c')
| -rw-r--r-- | net/sunrpc/auth_gss/gss_krb5_seal.c | 13 |
1 files changed, 7 insertions, 6 deletions
diff --git a/net/sunrpc/auth_gss/gss_krb5_seal.c b/net/sunrpc/auth_gss/gss_krb5_seal.c index 46c6f44e5c3f..cd512719092b 100644 --- a/net/sunrpc/auth_gss/gss_krb5_seal.c +++ b/net/sunrpc/auth_gss/gss_krb5_seal.c @@ -101,6 +101,7 @@ gss_get_mic_v1(struct krb5_ctx *ctx, struct xdr_buf *text, void *ptr; s32 now; u32 seq_send; + u8 *cksumkey; dprintk("RPC: %s\n", __func__); BUG_ON(ctx == NULL); @@ -109,15 +110,15 @@ gss_get_mic_v1(struct krb5_ctx *ctx, struct xdr_buf *text, ptr = setup_token(ctx, token); - if (make_checksum((char *)ctx->gk5e->cksum_name, ptr, 8, - text, 0, &md5cksum)) - return GSS_S_FAILURE; + if (ctx->gk5e->keyed_cksum) + cksumkey = ctx->cksum; + else + cksumkey = NULL; - if (krb5_encrypt(ctx->seq, NULL, md5cksum.data, - md5cksum.data, md5cksum.len)) + if (make_checksum(ctx, ptr, 8, text, 0, cksumkey, &md5cksum)) return GSS_S_FAILURE; - memcpy(ptr + GSS_KRB5_TOK_HDR_LEN, md5cksum.data + md5cksum.len - 8, 8); + memcpy(ptr + GSS_KRB5_TOK_HDR_LEN, md5cksum.data, md5cksum.len); spin_lock(&krb5_seq_lock); seq_send = ctx->seq_send++; |