15 lines
551 B
C
15 lines
551 B
C
#include <asn1.h>
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/* Store integer l according to ASN.1 DER rules.
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* Use fmt_asn1INTEGER for default presents for tag.
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* Return number of bytes needed. Only write if DEST!=NULL */
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size_t fmt_asn1int(char* dest,enum asn1_tagclass tc,enum asn1_tagtype tt,enum asn1_tag tag,unsigned long l) {
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size_t len,tmp;
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/* first the tag */
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if (!dest) return fmt_asn1tag(0,tc,tt,tag)+1+fmt_asn1intpayload(0,l);
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len=fmt_asn1tag(dest,tc,tt,tag);
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tmp=fmt_asn1intpayload(dest+len+1,l);
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if (fmt_asn1length(dest+len,tmp)!=1) return 0;
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return len+tmp+1;
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}
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