Jonas Ranstam PhD
EncryptionThis program is based on encryption using the RSA algorithm and OpenSSL. The source of the program can be downloaded here. A Linux commandline PHP program for decryption can be dowloaded here.
To use this facility for exchanging encrypted messages, both parties' public keys must be available. First, encrypt messages using the receiver's public key. Then download the file with the encrypted message and email this to the receiver. This can decrypt the message with the private key using the programs downloadable above.
For just sending single encrypted messages to Jonas Ranstam, follow this link.