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sval1411

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Encrypted Mail message in a NSF

Greetings,

I have a NSF with some encrypted mail messages. Specifically only the body is encrypted.
Please inform if I can decrypt this in some way??

Thanks in advance.
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Felix Grushevsky
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You will need two things in order to decrypt the messages: A Notes client and the key used to encrypt the messages.

There are two possibilities.

1) The entire database has been encrypted.  Local databases are encrypted using the user's ID file.  You will need to log into Notes using the id file that was used to create the local replica.

2) Only some emails are encrypted.  In this case the sender encrypted the message using a secret key.  To decrypt these message, you will need the sender to forward the secret key to you.  Then you will have to accept the secret key (which will be stored in your ID file so that you always have it) in order to view the message.  To get the sender's secret key, have the user goto File > Security > User Security > Notes Data > Documents, select the secret key that he used to encrypt the email and click the "Mail Secret Key" button.  Once you receive the email containing the key, save it to your hard drive, then goto File > Security > User Security > Notes Data > Documents and click Other Actions > Import Secret Key, browse for the key file and import it.
Bill, AFAIK, the sender encrypts (as fgrushevsky says) the message using the public key of the recipient. That's how public/private key encryption works. The sender cannot help you therefore, you need the recipient to help you decrypt the message.
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sval1411

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Thank you all for the very useful responses and making it easy to understand.

Now, what if I don't have the id file of the intended recipient? Is there some way that I can disable the encryption or is there some way I can get the data without the encryption keys??

Thanks again!!
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yes, I agree with SysExpert

however, i was told that for older version of Notes where default encryption key strenght was lower then now it is possible to "break" encryption within reasanoble time. At one point, about 5 yrs ago i was working for the company involved in some litigations . as part of legal discovery we had to provide mail archives for several users going back several years. the archives were for existing users and for the ones that left. the archives contained both encrypted and regular messages.
The company i was working for invited another company that specialized in discovery, extracting and preparing documents for litigations. i was told that they have tools to extract even encrypted mail but only for older versions. May be they were bluffing? I really don't know
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