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Finished with lab2

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Martins Eglitis 8 months ago
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1 changed files with 43 additions and 8 deletions
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      lab2/Lab2_Group64.txt

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lab2/Lab2_Group64.txt View File

@@ -1,6 +1,6 @@
1. My name is Martins Eglitis, Group 64, my civic registration number is 19891014-T855

2. The fingerprint of the key `gpg --fingerprint eglitis@student.chalmers.se | grep fingerprint | cut -d "=" -f 2` is
2. The fingerprint of the key `gpg --fingerprint eglitis@student.chalmers.se | grep fingerprint | cut -d "=" -f 2` is D59D D1BC 2E1B 4F45 C838 C13F 059A 248C E484 308E .

3. Thunderbird + Enigmail

@@ -14,10 +14,45 @@ When signing, first plain text is turned into message diggest using a one-way ha

When encrypting, first a one time, symmetrical session key is created (because encrypting using symmetrical encryption is thousands of times faster). Then the plain text is encrypted with the session key. The session key is encrypted with the receivers public key. The symmetricaly encrypted plain text and the asymmetrically encrypted session key is sent to the receiver.

7. As it was writen in "The Basics of Cryptography" article: you validate certificates, you trust people. Validity is confidence that a certificate belongs to a specific person. You can check the validity of a certificate by:
a) asking directly for the public key and comparing
b) checking the fingerprint (hash of the user's certificate)
c) trusting a third party (other users, CA)
There are 3 forms of trust:
a) direct
b) hierarchi
7. As it was writen in "The Basics of Cryptography" article: you validate certificates, you trust people. Validity is confidence that a certificate belongs to a specific person. You can check the validity of a certificate by: a) asking directly for the public key and comparing b) checking the fingerprint (hash of the user's certificate) c) trusting a third party (other users, CA). There are 3 forms of trust: a) direct b) hierarchical c) web-of-trust. I can use the web-of-trust, which is using both the direct and hierarchical trust models to trust other users and validate certificates.

8. It is trustful if you are sure that the email really comes from the respective person. Again, it is no problem to use different communication technologies as long as you trust the person and the certificates are valid.

9. a) Elena trust: unkown, validity: full. b) Elena trust: unkown, validity: full

10.

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