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Always encrypt to sender's certificate
Checked, The Bat! will encrypt every message for senders with certificates.
Cache Certificate Phrase
Choose the timespan a passphrase should be stored in memory before you have to re-enter it.
Compress data before encryption
Compression reduces message size and makes the message more resistant to attacks.
Beware: S/MIME compression is not widely adopted and may not be supported by other S/MIME-enabled e-mail client. Microsoft CryptoAPI does not support comppression!
Choose your preferred encryption algorithm: RC2 (128bits), 3DES (156 bits) or IDEA (128 bits).
Beware: Due to patent restrictions IDEA is not widespread, itmay not be supported by your recipient!
IDEA is patented in the following countries: Austria, France, Germany, Italy, Netherlands, Spain, Sweden, Switzerland, United Kingdom, United States. A license must be purchased from MediaCrypt AG for any use of IDEA for commercial purposes in the above countries.
Signing Hash Algorithm
Specifies which HASH algorithm is used
The default SHA-1 is widely supported and highly secure; MD-5 is your choice if your recipient's S/MIME implementation does not support SHA-1.
Random Seed File
Specifies the path where random data for key generation is stored.