Digital certificate issuer-correlated digital signature verification

A computer program product comprising a computer readable storage medium including computer readable program code, where the computer readable program code when executed on a computer causes the computer to:

• receive a message comprising a digital signature of a message originator;
• determine, in response to determining that the message originator is authorized by a data protection policy to originate the message, whether a specific authorized certificate issuer is required for the message originator within the data protection policy;
• and
• in response to determining that the specific authorized certificate issuer is required for the message originator within the data protection policy:
• determine whether a message originator certificate used to generate the digital signature of the message originator is issued by the specific authorized certificate issuer required for the message originator within the data protection policy.