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Size: 10633
Comment: edited criteria
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Size: 8290
Comment: update criteria in results
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| Deletions are marked like this. | Additions are marked like this. |
| Line 34: | Line 34: |
| |=C9: Can display basic trust (Compose)|{{icon-error.png}} no|2.6.3| |=C10: Can display basic trust (Signature)|{{checkmark.png}} yes|2.6.3| |=C11: Displays basic trust for WKD-keys(Compose)||| |=C12: Displays basic trust for WKD-keys (Signature)||| |=C13: Displays different levels of trust (Compose)|{{icon-error.png}} no|2.6.3| |=C14: Displays different levels of trust (Signature)|{{icon-error.png}} no|2.6.3| |
|=C9: Displays basic trust (Compose)||| |=C10: Displays basic trust (Signature)||| |
| Line 52: | Line 49: |
| |=C9: Can display basic trust (Compose)|{{icon-error.png}} no|3.18.0/4.0.0| |=C10: Can display basic trust (Signature)|{{checkmark.png}} yes|3.18.0/4.0.0| |=C11: Displays basic trust for WKD-keys(Compose)|{{icon-error.png}} no|3.18.0/4.0.0| |=C12: Displays basic trust for WKD-keys (Signature)|{{icon-error.png}} no|3.18.0/4.0.0| |=C13: Displays different levels of trust (Compose)|{{icon-error.png}} no|3.18.0/4.0.0| |=C14: Displays different levels of trust (Signature)|{{checkmark.png}} yes|3.18.0/4.0.0| |
|=C9: Displays basic trust for WKD-keys(Compose)|{{icon-error.png}} no|3.18.0/4.0.0| |=C10: Displays basic trust for WKD-keys (Signature)|{{icon-error.png}} no|3.18.0/4.0.0| |
| Line 70: | Line 63: |
| |=C9: Can display basic trust (Compose)|{{icon-error.png}} no|1.1776 |=C10: Can display basic trust (Signature)|{{icon-error.png}} no|1.1776 |=C11: Displays basic trust for WKD-keys(Compose)|{{icon-error.png}} no|1.1776 |=C12: Displays basic trust for WKD-keys (Signature)|{{icon-error.png}} no|1.1776 |=C13: Displays different levels of trust (Compose)|{{icon-error.png}} no|1.1776 |=C14: Displays different levels of trust (Signature)|{{icon-error.png}} no|1.1776 |
|=C9: Displays basic trust for WKD-keys(Compose)|{{icon-error.png}} no|1.1776 |=C10: Displays basic trust for WKD-keys (Signature)|{{icon-error.png}} no|1.1776 |
| Line 88: | Line 77: |
| |=C9: Can display basic trust (Compose)|{{checkmark.png}} yes|5.806 |=C10: Can display basic trust (Signature)|{{checkmark.png}} yes|5.806 |=C11: Displays basic trust for WKD-keys(Compose)|{{icon-error.png}} no|5.806 |=C12: Displays basic trust for WKD-keys (Signature)|{{icon-error.png}} no|5.806 |=C13: Displays different levels of trust (Compose)|{{icon-error.png}} no|5.806 |=C14: Displays different levels of trust (Signature)|{{icon-error.png}} no|5.806 |
|=C9: Displays basic trust for WKD-keys(Compose)|{{icon-error.png}} no|5.806 |=C10: Displays basic trust for WKD-keys (Signature)|{{icon-error.png}} no|5.806 |
| Line 98: | Line 83: |
| |=C1: Direct method|{{checkmark.png}} yes|5.18.3 |=C2: Advanced method|{{checkmark.png}} yes|5.18.3 |
|=C1: Direct method|{{checkmark.png}} yes|5.20.3 |=C2: Advanced method|{{checkmark.png}} yes|5.20.3 |
| Line 101: | Line 86: |
| |=C4: Offered in compose area|{{checkmark.png}} yes|5.18.3 |=C5: Offered in signature area|{{icon-error.png}} no|5.18.3 |=C6: Automatic WKD (Compose)|{{checkmark.png}} yes|5.18.3 |
|=C4: Offered in compose area|{{checkmark.png}} yes|5.20.3 |=C5: Offered in signature area|{{icon-error.png}} no|5.20.3 |=C6: Automatic WKD (Compose)|{{checkmark.png}} yes|5.20.3 |
| Line 106: | Line 91: |
| |=C9: Can display basic trust (Compose)|{{checkmark.png}} yes|5.18.3 |=C10: Can display basic trust (Signature)|{{checkmark.png}} yes|5.18.3 |=C11: Displays basic trust for WKD-keys(Compose)|{{icon-error.png}} no|5.18.3 |=C12: Displays basic trust for WKD-keys (Signature)|{{icon-error.png}} no|5.18.3 |=C13: Displays different levels of trust (Compose)|{{icon-error.png}} no|5.18.3 |=C14: Displays different levels of trust (Signature)|{{icon-error.png}} no|5.18.3 |
|=C9: Displays basic trust (Compose)|{{icon-error.png}} no|5.20.3 |=C10: Displays basic trust (Signature)|{{icon-error.png}} no|5.20.3 |
| Line 125: | Line 106: |
| |=C9: Can display basic trust (Compose)|{{icon-error.png}} no|4.4.1 |=C10: Can display basic trust (Signature)| |=C11: Displays basic trust for WKD-keys(Compose)|{{icon-error.png}} no|4.4.1 |=C12: Displays basic trust for WKD-keys (Signature)| |=C13: Displays different levels of trust (Compose)|{{icon-error.png}} no|4.4.1 |=C14: Displays different levels of trust (Signature)| |
|=C9: Displays basic trust (Compose)|{{icon-error.png}} no|4.4.1 |=C10: Displays basic trust (Signature)| |
| Line 134: | Line 111: |
| |=Criterion|=Fullfilled|=Tested version |=C1: Direct method|{{checkmark.png}} yes|2.5.1 |=C2: Advanced method|{{checkmark.png}} yes|2.5.1 |=C3: WKD-ready| |=C4: Offered in compose area|{{checkmark.png}} yes|2.5.1 |=C5: Offered in signature area|{{icon-error.png}} no|2.5.1 |=C6: Automatic WKD (Compose)|{{checkmark.png}} yes|2.5.1 |=C7: Prefer WKD-keys (Compose)| |=C8: Prefer WKD-keys (Signature)| |=C9: Can display basic trust (Compose)|{{icon-error.png}} no|2.5.1 |=C10: Can display basic trust (Signature)|{{checkmark.png}} yes|2.5.1 |=C11: Displays basic trust for WKD-keys(Compose)|{{icon-error.png}} no|2.5.1 |=C12: Displays basic trust for WKD-keys (Signature)|{{checkmark.png}} yes|2.5.1 |=C13: Displays different levels of trust (Compose)|{{icon-error.png}} no|2.5.1 |=C14: Displays different levels of trust (Signature)|{{checkmark.png}} yes|2.5.1 |
|=Criterion|=Fullfilled|=Tested version|=Comment |=C1: Direct method|{{checkmark.png}} yes|2.5.3 |=C2: Advanced method|{{checkmark.png}} yes|2.5.3 |=C3: WKD-ready|{{checkmark.png}} yes|2.5.3 |=C4: Offered in compose area|{{checkmark.png}} yes|2.5.3 |=C5: Offered in signature area|{{checkmark.png}} yes|2.5.3 |=C6: Automatic WKD (Compose)|{{checkmark.png}} yes|2.5.3 |=C7: Prefer WKD-keys (Compose)|{{icon-error.png}} no|2.5.3|When sending an email Gpg~OL shows a dialog where the user has to select a key. The WKD key was pre-selected but it's not sure why. |=C8: Prefer WKD-keys (Signature)|{{icon-error.png}} no|2.5.3 |=C9: Displays basic trust (Compose)|{{icon-error.png}} no|2.5.3 |=C10: Displays basic trust (Signature)|{{checkmark.png}} yes|2.5.3 |
| Line 161: | Line 134: |
| |=C9: Can display basic trust (Compose)|{{icon-error.png}} no|97.0a1 |=C10: Can display basic trust (Signature)|{{icon-error.png}} no|97.0a1 |=C11: Displays basic trust for WKD-keys(Compose)|{{icon-error.png}} no|97.0a1 |=C12: Displays basic trust for WKD-keys (Signature)|{{icon-error.png}} no|97.0a1 |=C13: Displays different levels of trust (Compose)|{{icon-error.png}} no|97.0a1 |=C14: Displays different levels of trust (Signature)|{{icon-error.png}} no|97.0a1 |
|=C9: Displays basic trust (Compose)|{{icon-error.png}} no|97.0a1 |=C10: Displays basic trust (Signature)|{{icon-error.png}} no|97.0a1 |
Usability of WKD
Contents
Criteria for implementing WKD with a good usability
In a bachelor thesis two use cases were developed which describe how users who don't have much experience with encryption can encrypt emails or check signatures with little effort and a good usability.
These use cases are used to name criteria which help developers to improve the usability of their products. They are also useful when it comes to a comparison between the usability of different products.
WKD-keys have a basic trust because they are fetched from WKD-servers that belong to email-providers. Reasons for that are that email-provider know that a pubkey belongs to an email-address and that email-providers usually have a higher security level than private persons who maintain a server. Some criteria reflect this basic trust of WKD-keys.
- C1 - Direct method: The product supports the direct method of WKD
- C2 - Advanced method: The product supports the advanced method of WKD
- C3 - WKD-ready: The product is ready for WKD without any preparations after a clean installation
- C4 - Offered in compose area: WKD is offered in the area where users enter an email-address. To fulfill this criterion it's sufficient that there is a button to start a key lookup. It's not necessary that WKD will be executed automatically. But, users shouldn't have to open additional windows before they can start the lookup.
- C5 - Offered in signature area: WKD is offered in the area where users check the signature of an email. Like for C4 users shouldn't have to open additional windows.
- C6 - Automatic WKD (Compose): The product uses WKD automatically when users enter an email-address in the area where they can compose an email. The users do not have to press a button to retrieve a key via WKD.
- C7 - Prefer WKD-keys (Compose): When the product has access to keys which were directly imported and don't contain any information about their trust and a WKD-key it should automatically use the WKD-key. This criterion applies to the area to compose an email.
- C8 - Prefer WKD-keys (Signature): When the product has access to keys which were directly imported and don't contain any information about their trust and a WKD-key it should automatically use the WKD-key. This criterion applies to the area to check the signature of an email.
- C9 - Displays basic trust (Compose): The product distinguishes between keys without any information about their trust and WKD-keys that have at least a basic trust. It displays this trust in the area to compose an email.
- C10 - Displays basic trust (Signature): The product distinguishes between keys without any information about their trust and WKD-keys that have at least a basic trust. It displays this trust in the area to check the signature of an email.
Usability of different products
Balsa
| Criterion | Fullfilled | Tested version |
|---|---|---|
| C1: Direct method |  yes |
2.6.3 |
| C2: Advanced method | yes |
2.6.3 |
| C3: WKD-ready |  no |
2.6.3 |
| C4: Offered in compose area | no |
2.6.3 |
| C5: Offered in signature area | no |
2.6.3 |
| C6: Automatic WKD (Compose) | no |
2.6.3 |
| C7: Prefer WKD-keys (Compose) | ||
| C8: Prefer WKD-keys (Signature) | ||
| C9: Displays basic trust (Compose) | ||
| C10: Displays basic trust (Signature) |
Claws Mail
| Criterion | Fullfilled | Tested version |
|---|---|---|
| C1: Direct method | yes |
3.18.0/4.0.0 |
| C2: Advanced method | yes |
3.18.0/4.0.0 |
| C3: WKD-ready | no |
3.18.0/4.0.0 |
| C4: Offered in compose area | no |
3.18.0/4.0.0 |
| C5: Offered in signature area | yes |
3.18.0/4.0.0 |
| C6: Automatic WKD (Compose) | no |
3.18.0/4.0.0 |
| C7: Prefer WKD-keys (Compose) | no |
3.18.0/4.0.0 |
| C8: Prefer WKD-keys (Signature) | no |
3.18.0/4.0.0 |
| C9: Displays basic trust for WKD-keys(Compose) | no |
3.18.0/4.0.0 |
| C10: Displays basic trust for WKD-keys (Signature) | no |
3.18.0/4.0.0 |
FairEmail
| Criterion | Fullfilled | Tested version |
|---|---|---|
| C1: Direct method | yes |
1.1776 |
| C2: Advanced method | yes |
1.1776 |
| C3: WKD-ready | no |
1.1776 |
| C4: Offered in compose area | no |
1.1776 |
| C5: Offered in signature area | no |
1.1776 |
| C6: Automatic WKD (Compose) | no |
1.1776 |
| C7: Prefer WKD-keys (Compose) | no |
1.1776 |
| C8: Prefer WKD-keys (Signature) | no |
1.1776 |
| C9: Displays basic trust for WKD-keys(Compose) | no |
1.1776 |
| C10: Displays basic trust for WKD-keys (Signature) | no |
1.1776 |
K9Mail
| Criterion | Fullfilled | Tested version |
|---|---|---|
| C1: Direct method | yes |
5.806 |
| C2: Advanced method | yes |
5.806 |
| C3: WKD-ready | no |
5.806 |
| C4: Offered in compose area | no |
5.806 |
| C5: Offered in signature area | no |
5.806 |
| C6: Automatic WKD (Compose) | no |
5.806 |
| C7: Prefer WKD-keys (Compose) | yes |
5.806 |
| C8: Prefer WKD-keys (Signature) | no |
5.806 |
| C9: Displays basic trust for WKD-keys(Compose) | no |
5.806 |
| C10: Displays basic trust for WKD-keys (Signature) | no |
5.806 |
KMail
| Criterion | Fullfilled | Tested version |
|---|---|---|
| C1: Direct method | yes |
5.20.3 |
| C2: Advanced method | yes |
5.20.3 |
| C3: WKD-ready | no |
5.18.3 |
| C4: Offered in compose area | yes |
5.20.3 |
| C5: Offered in signature area | no |
5.20.3 |
| C6: Automatic WKD (Compose) | yes |
5.20.3 |
| C7: Prefer WKD-keys (Compose) | no |
5.18.3 |
| C8: Prefer WKD-keys (Signature) | no |
5.18.3 |
| C9: Displays basic trust (Compose) | no |
5.20.3 |
| C10: Displays basic trust (Signature) | no |
5.20.3 |
Mailvelope
| Criterion | Fullfilled | Tested version |
|---|---|---|
| C1: Direct method | yes |
4.4.1 |
| C2: Advanced method | yes |
4.5.0 |
| C3: WKD-ready | yes |
4.4.1 |
| C4: Offered in compose area | yes |
4.4.1 |
| C5: Offered in signature area | no |
4.4.1 |
| C6: Automatic WKD (Compose) | yes |
4.4.1 |
| C7: Prefer WKD-keys (Compose) | no |
4.4.1 |
| C8: Prefer WKD-keys (Signature) | ||
| C9: Displays basic trust (Compose) | no |
4.4.1 |
| C10: Displays basic trust (Signature) |
GpgOL (Outlook)
| Criterion | Fullfilled | Tested version | Comment |
|---|---|---|---|
| C1: Direct method | yes |
2.5.3 | |
| C2: Advanced method | yes |
2.5.3 | |
| C3: WKD-ready | yes |
2.5.3 | |
| C4: Offered in compose area | yes |
2.5.3 | |
| C5: Offered in signature area | yes |
2.5.3 | |
| C6: Automatic WKD (Compose) | yes |
2.5.3 | |
| C7: Prefer WKD-keys (Compose) | no |
2.5.3 | When sending an email GpgOL shows a dialog where the user has to select a key. The WKD key was pre-selected but it's not sure why. |
| C8: Prefer WKD-keys (Signature) | no |
2.5.3 | |
| C9: Displays basic trust (Compose) | no |
2.5.3 | |
| C10: Displays basic trust (Signature) | yes |
2.5.3 |
Thunderbird
| Criterion | Fullfilled | Tested version |
|---|---|---|
| C1: Direct method | yes |
97.0a1 |
| C2: Advanced method | yes |
97.0a1 |
| C3: WKD-ready | no |
97.0a1 |
| C4: Offered in compose area | no |
97.0a1 |
| C5: Offered in signature area | no |
97.0a1 |
| C6: Automatic WKD (Compose) | no |
97.0a1 |
| C7: Prefer WKD-keys (Compose) | no |
97.0a1 |
| C8: Prefer WKD-keys (Signature) | no |
97.0a1 |
| C9: Displays basic trust (Compose) | no |
97.0a1 |
| C10: Displays basic trust (Signature) | no |
97.0a1 |