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mbedtls_x509_time_cmp() perf

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faster comparison of mbedtls_x509_time values with valid ranges per elt

Signed-off-by: Glenn Strauss <gstrauss@gluelogic.com>
This commit is contained in:
Glenn Strauss 2022-06-30 04:38:02 -04:00 committed by David Horstmann
parent 416dc03467
commit 5aef2971e6
1 changed files with 9 additions and 19 deletions
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28
library/x509.c
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@ -997,27 +997,17 @@ int mbedtls_x509_key_size_helper(char *buf, size_t buf_size, const char *name)
int mbedtls_x509_time_cmp(const mbedtls_x509_time *t1,
const mbedtls_x509_time *t2)
{
if (t1->year != t2->year) {
return t1->year - t2->year;
int x;
x = (((t1->year << 9) | (t1->mon << 5) | (t1->day)) -
((t2->year << 9) | (t2->mon << 5) | (t2->day)));
if (x != 0) {
return x;
}
if (t1->mon != t2->mon) {
return t1->mon - t2->mon;
}
if (t1->day != t2->day) {
return t1->day - t2->day;
}
if (t1->hour != t2->hour) {
return t1->hour - t2->hour;
}
if (t1->min != t2->min) {
return t1->min - t2->min;
}
return t1->sec - t2->sec;
x = (((t1->hour << 12) | (t1->min << 6) | (t1->sec)) -
((t2->hour << 12) | (t2->min << 6) | (t2->sec)));
return x;
}
#if defined(MBEDTLS_HAVE_TIME_DATE)