PHP 8.1 corrections

Adds change to address PHP 8.1 deprecation message.

Stable version with elliptic curve support

Various changes for elliptic curve support. Also fixes an issue that arises when a DER sequence is encoded and the encoding is exactly 127 octets.

Stable version

Updates to add support for certificates generated using an elliptic curve algorithm

Stable version

This library primarily supports bseddon/xml-signer project. This release add a function called hex to the BigInteger library so a big integer can be represented as a hex string. Add a stream context to the request to retrieve a certificate to prevent the need to verify a peer. A certificate may be requested using HTTP but the server might redirect to HTTPS and by default PHP will attempt to verify the new connection an action that will create a warning and fail to retrieve the resource.

More updates for xml-signer LTA support

0.9.9

Make sure there's an issuer certificate