Examples with BerInteger com.beanit.asn1bean.ber.types.BerInteger used on opensource projects

Example 16 with BerInteger

use of com.beanit.asn1bean.ber.types.BerInteger in project sandbox-java by stIncMale.

the class ReceiptAttribute method decode.

public int decode(InputStream is, boolean withTag) throws IOException {
    int tlByteCount = 0;
    int vByteCount = 0;
    BerTag berTag = new BerTag();
    if (withTag) {
        tlByteCount += tag.decodeAndCheck(is);
    }
    BerLength length = new BerLength();
    tlByteCount += length.decode(is);
    int lengthVal = length.val;
    vByteCount += berTag.decode(is);
    if (berTag.equals(BerInteger.tag)) {
        type = new BerInteger();
        vByteCount += type.decode(is, false);
        vByteCount += berTag.decode(is);
    } else {
        throw new IOException("Tag does not match mandatory sequence component.");
    }
    if (berTag.equals(BerInteger.tag)) {
        version = new BerInteger();
        vByteCount += version.decode(is, false);
        vByteCount += berTag.decode(is);
    } else {
        throw new IOException("Tag does not match mandatory sequence component.");
    }
    if (berTag.equals(BerOctetString.tag)) {
        value = new BerOctetString();
        vByteCount += value.decode(is, false);
        if (lengthVal >= 0 && vByteCount == lengthVal) {
            return tlByteCount + vByteCount;
        }
        vByteCount += berTag.decode(is);
    } else {
        throw new IOException("Tag does not match mandatory sequence component.");
    }
    if (lengthVal < 0) {
        if (!berTag.equals(0, 0, 0)) {
            throw new IOException("Decoded sequence has wrong end of contents octets");
        }
        vByteCount += BerLength.readEocByte(is);
        return tlByteCount + vByteCount;
    }
    throw new IOException("Unexpected end of sequence, length tag: " + lengthVal + ", bytes decoded: " + vByteCount);
}