PKCS #11 Utilities

• PKI_pkcs11SignatureTombedTLSSignature
  Converts and ECDSA P-256 signature from the format provided by PKCS #11 to an ASN.1 formatted signature.
• PKI_mbedTLSSignatureToPkcs11Signature
  Converts an ECDSA P-256 signature from the format provided by mbedTLS to the format expected by PKCS #11.