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Pure-PHP ASN.1 Parser PHP version 5
| Author: | Jim Wigginton |
| Copyright: | 2012 Jim Wigginton |
| License: | http://www.opensource.org/licenses/mit-license.html MIT License |
| Link: | http://phpseclib.sourceforge.net |
| File Size: | 1469 lines (57 kb) |
| Included or required: | 0 times |
| Referenced: | 0 times |
| Includes or requires: | 0 files |
ASN1:: (14 methods):
decodeBER()
_decode_ber()
asn1map()
encodeDER()
_encode_der()
_encodeLength()
_decodeOID()
_encodeOID()
_decodeTime()
setTimeFormat()
loadOIDs()
loadFilters()
_string_shift()
convert()
| decodeBER($encoded) X-Ref |
| Parse BER-encoding Serves a similar purpose to openssl's asn1parse param: string $encoded return: array |
| _decode_ber($encoded, $start = 0, $encoded_pos = 0) X-Ref |
| Parse BER-encoding (Helper function) Sometimes we want to get the BER encoding of a particular tag. $start lets us do that without having to reencode. $encoded is passed by reference for the recursive calls done for self::TYPE_BIT_STRING and self::TYPE_OCTET_STRING. In those cases, the indefinite length is used. param: string $encoded param: int $start param: int $encoded_pos return: array |
| asn1map($decoded, $mapping, $special = array() X-Ref |
| ASN.1 Map Provides an ASN.1 semantic mapping ($mapping) from a parsed BER-encoding to a human readable format. "Special" mappings may be applied on a per tag-name basis via $special. param: array $decoded param: array $mapping param: array $special return: array |
| encodeDER($source, $mapping, $special = array() X-Ref |
| ASN.1 Encode DER-encodes an ASN.1 semantic mapping ($mapping). Some libraries would probably call this function an ASN.1 compiler. "Special" mappings can be applied via $special. param: string $source param: string $mapping param: array $special return: string |
| _encode_der($source, $mapping, $idx = null, $special = array() X-Ref |
| ASN.1 Encode (Helper function) param: string $source param: string $mapping param: int $idx param: array $special return: string |
| _encodeLength($length) X-Ref |
| DER-encode the length DER supports lengths up to (2**8)**127, however, we'll only support lengths up to (2**8)**4. See {@link http://itu.int/ITU-T/studygroups/com17/languages/X.690-0207.pdf#p=13 X.690 paragraph 8.1.3} for more information. param: int $length return: string |
| _decodeOID($content) X-Ref |
| BER-decode the OID Called by _decode_ber() param: string $content return: string |
| _encodeOID($source) X-Ref |
| DER-encode the OID Called by _encode_der() param: string $source return: string |
| _decodeTime($content, $tag) X-Ref |
| BER-decode the time Called by _decode_ber() and in the case of implicit tags asn1map(). param: string $content param: int $tag return: string |
| setTimeFormat($format) X-Ref |
| Set the time format Sets the time / date format for asn1map(). param: string $format |
| loadOIDs($oids) X-Ref |
| Load OIDs Load the relevant OIDs for a particular ASN.1 semantic mapping. param: array $oids |
| loadFilters($filters) X-Ref |
| Load filters See \phpseclib\File\X509, etc, for an example. param: array $filters |
| _string_shift(&$string, $index = 1) X-Ref |
| String Shift Inspired by array_shift param: string $string param: int $index return: string |
| convert($in, $from = self::TYPE_UTF8_STRING, $to = self::TYPE_UTF8_STRING) X-Ref |
| String type conversion This is a lazy conversion, dealing only with character size. No real conversion table is used. param: string $in param: int $from param: int $to return: string |