diff --git a/wolfcrypt/src/asn.c b/wolfcrypt/src/asn.c index db400f17b..ae5d1a536 100644 --- a/wolfcrypt/src/asn.c +++ b/wolfcrypt/src/asn.c @@ -3475,6 +3475,21 @@ int ValidateDate(const byte* date, byte format, int dateType) #endif ltime = XTIME(0); + +#ifdef WOLFSSL_BEFORE_DATE_CLOCK_SKEW + if (dateType == BEFORE) { + WOLFSSL_MSG("Skewing local time for before date check"); + ltime += WOLFSSL_BEFORE_DATE_CLOCK_SKEW; + } +#endif + +#ifdef WOLFSSL_AFTER_DATE_CLOCK_SKEW + if (dateType == AFTER) { + WOLFSSL_MSG("Skewing local time for after date check"); + ltime -= WOLFSSL_AFTER_DATE_CLOCK_SKEW; + } +#endif + if (!ExtractDate(date, format, &certTime, &i)) { WOLFSSL_MSG("Error extracting the date"); return 0; @@ -3500,12 +3515,17 @@ int ValidateDate(const byte* date, byte format, int dateType) } if (dateType == BEFORE) { - if (DateLessThan(localTime, &certTime)) + if (DateLessThan(localTime, &certTime)) { + WOLFSSL_MSG("Date BEFORE check failed"); return 0; + } } - else - if (DateGreaterThan(localTime, &certTime)) + else { /* dateType == AFTER */ + if (DateGreaterThan(localTime, &certTime)) { + WOLFSSL_MSG("Date AFTER check failed"); return 0; + } + } return 1; }