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SecExMail Key File Format

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The SecExMail keys are stored in conventional text files ending in "#.pubrsa" and "#.privrsa" for public keys and private keys respectively. Files are divided into an administrative segment and a data segment. The administrative segment contains information required by SecExMail for key management.

 

Administrative Segment

 

keyid

Globally unique key identifier; used by SecExMail to associate private and public key components.

owner

owner of the SecExMail key

email

Email address of key owner

 

enabled

reserved for future use

options

vendor options field - reserved for future use

 

New lines in the administrative section are denoted by carriage return line feed pairs (ASCII characters 13 + 10).

 

Data Segment

 

The data section is comprised of a single RSA key in base 64 encoded format. New lines in the data section are denoted by a single linefeed ( ASCII character 10 ). Private RSA keys are stored in 3DES encoded, chained block cipher format and protected with a passphrase.

 

secexkey_file_format

 

SecExMail keys held in the registry are stored in a format analogous to keys stored on file - with each parameter represented as a registry value. See image below.

 

secex key registry layout


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