Method Decode

extra/yassl/taocrypt/src/coding.cpp:95–124

Hex Decode

// Hex Decode
void HexDecoder::Decode()
{
    word32 bytes = coded_.size();
    decoded_.New(bytes / 2);

    word32 i(0);

    while (bytes) {
        byte b  = coded_.next() - 0x30;  // 0 starts at 0x30
        byte b2 = coded_.next() - 0x30;

        // sanity checks
        if (b >= sizeof(hexDecode)/sizeof(hexDecode[0])) {
            coded_.SetError(PEM_E);
            return;
        }
        if (b2 >= sizeof(hexDecode)/sizeof(hexDecode[0])) {
            coded_.SetError(PEM_E);
            return;
        }

        b  = hexDecode[b];
        b2 = hexDecode[b2];

        decoded_[i++] = (b << 4) | b2;
        bytes -= 2;
    }

    coded_.reset(decoded_);
}


// Base 64 Encode