The PR_USER_CERTIFICATE property contains an ASN.1 authentication certificate for a messaging user.
| Header file: | MAPITAGS.H |
| May be exposed by: | Messaging user objects |
| Identifier: | 0x3A22 |
| Property type: | PT_BINARY |
| Property tag: | 0x3A220102 |
An authentication certificate is similar to a digital signature. Several MAPI properties supply ASN.1 certificates.