The IAEA uses S/MIME to protect communications by email.
Once the necessary certificates are configured, individual certificates (public key) can be exchanged with your intended correspondent at the IAEA. Unfortunately, the IAEA cannot assist with the installation or use of these certificates.
Download the IAEA’s Public Certificates
IAEA Root CA Certificate (Thumbprint: 05 7e ce d4 58 e9 0f 6f a5 1e e9 58 61 ce 20 67 c6 07 e6 fd)
IAEA Enhanced Assurance Sube CA (Thumbprint: 91 21 98 16 11 29 bf 22 f0 18 d9 8d 59 0b ba 58 50 b6 75 8c)