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authorLinus Torvalds <torvalds@linux-foundation.org>2024-09-16 06:28:28 +0200
committerLinus Torvalds <torvalds@linux-foundation.org>2024-09-16 06:28:28 +0200
commit85ffc6e4ed3712f8b3fedb3fbe42afae644a699c (patch)
tree294e5220ea434ce796e0e02a4da89edf034e072d /lib/crypto/mpi/mpi-cmp.c
parentMerge tag 'net-next-6.12' of git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net-next (diff)
parentcrypto: n2 - Set err to EINVAL if snprintf fails for hmac (diff)
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Merge tag 'v6.12-p1' of git://git.kernel.org/pub/scm/linux/kernel/git/herbert/crypto-2.6
Pull crypto update from Herbert Xu" "API: - Make self-test asynchronous Algorithms: - Remove MPI functions added for SM3 - Add allocation error checks to remaining MPI functions (introduced for SM3) - Set default Jitter RNG OSR to 3 Drivers: - Add hwrng driver for Rockchip RK3568 SoC - Allow disabling SR-IOV VFs through sysfs in qat - Fix device reset bugs in hisilicon - Fix authenc key parsing by using generic helper in octeontx* Others: - Fix xor benchmarking on parisc" * tag 'v6.12-p1' of git://git.kernel.org/pub/scm/linux/kernel/git/herbert/crypto-2.6: (96 commits) crypto: n2 - Set err to EINVAL if snprintf fails for hmac crypto: camm/qi - Use ERR_CAST() to return error-valued pointer crypto: mips/crc32 - Clean up useless assignment operations crypto: qcom-rng - rename *_of_data to *_match_data crypto: qcom-rng - fix support for ACPI-based systems dt-bindings: crypto: qcom,prng: document support for SA8255p crypto: aegis128 - Fix indentation issue in crypto_aegis128_process_crypt() crypto: octeontx* - Select CRYPTO_AUTHENC crypto: testmgr - Hide ENOENT errors crypto: qat - Remove trailing space after \n newline crypto: hisilicon/sec - Remove trailing space after \n newline crypto: algboss - Pass instance creation error up crypto: api - Fix generic algorithm self-test races crypto: hisilicon/qm - inject error before stopping queue crypto: hisilicon/hpre - mask cluster timeout error crypto: hisilicon/qm - reset device before enabling it crypto: hisilicon/trng - modifying the order of header files crypto: hisilicon - add a lock for the qp send operation crypto: hisilicon - fix missed error branch crypto: ccp - do not request interrupt on cmd completion when irqs disabled ...
Diffstat (limited to '')
-rw-r--r--lib/crypto/mpi/mpi-cmp.c46
1 files changed, 10 insertions, 36 deletions
diff --git a/lib/crypto/mpi/mpi-cmp.c b/lib/crypto/mpi/mpi-cmp.c
index 0835b6213235..ceaebe181cd7 100644
--- a/lib/crypto/mpi/mpi-cmp.c
+++ b/lib/crypto/mpi/mpi-cmp.c
@@ -45,54 +45,28 @@ int mpi_cmp_ui(MPI u, unsigned long v)
}
EXPORT_SYMBOL_GPL(mpi_cmp_ui);
-static int do_mpi_cmp(MPI u, MPI v, int absmode)
+int mpi_cmp(MPI u, MPI v)
{
- mpi_size_t usize;
- mpi_size_t vsize;
- int usign;
- int vsign;
+ mpi_size_t usize, vsize;
int cmp;
mpi_normalize(u);
mpi_normalize(v);
-
usize = u->nlimbs;
vsize = v->nlimbs;
- usign = absmode ? 0 : u->sign;
- vsign = absmode ? 0 : v->sign;
-
- /* Compare sign bits. */
-
- if (!usign && vsign)
+ if (!u->sign && v->sign)
return 1;
- if (usign && !vsign)
+ if (u->sign && !v->sign)
return -1;
-
- /* U and V are either both positive or both negative. */
-
- if (usize != vsize && !usign && !vsign)
+ if (usize != vsize && !u->sign && !v->sign)
return usize - vsize;
- if (usize != vsize && usign && vsign)
- return vsize + usize;
+ if (usize != vsize && u->sign && v->sign)
+ return vsize - usize;
if (!usize)
return 0;
cmp = mpihelp_cmp(u->d, v->d, usize);
- if (!cmp)
- return 0;
- if ((cmp < 0?1:0) == (usign?1:0))
- return 1;
-
- return -1;
-}
-
-int mpi_cmp(MPI u, MPI v)
-{
- return do_mpi_cmp(u, v, 0);
+ if (u->sign)
+ return -cmp;
+ return cmp;
}
EXPORT_SYMBOL_GPL(mpi_cmp);
-
-int mpi_cmpabs(MPI u, MPI v)
-{
- return do_mpi_cmp(u, v, 1);
-}
-EXPORT_SYMBOL_GPL(mpi_cmpabs);