diff options
Diffstat (limited to 'fmt_asn1intpayload.c')
-rw-r--r-- | fmt_asn1intpayload.c | 20 |
1 files changed, 20 insertions, 0 deletions
diff --git a/fmt_asn1intpayload.c b/fmt_asn1intpayload.c new file mode 100644 index 0000000..15e71ca --- /dev/null +++ b/fmt_asn1intpayload.c @@ -0,0 +1,20 @@ +#include "asn1.h" + +size_t fmt_asn1intpayload(char* dest,unsigned long l) { + size_t needed=sizeof l,i,fixup; + for (i=1; i<needed; ++i) { + if (!(l>>(i*8))) + break; + } + fixup=(l>>((i-1)*8))&0x80 ? 1 : 0; + if (dest) { + size_t j=i; + if (fixup) *dest++=0; + while (j) { + --j; + *dest=(l>>(j*8))&0xff; + ++dest; + } + } + return i+fixup; +} |