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The purpose of this question is to test student's understanding of the Elliptic curves version of El Gamal encryption. It asks them to go through two steps: the publication of the public key, and the use of this public key to encrypt a message.
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England schools
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England university
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Scotland schools
Taxonomy: mathcentre
Taxonomy: Kind of activity
Taxonomy: Context
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From users who are members of SIT281 :
| Julien Ugon | said | Ready to use | 1 year, 8 months ago |
History
Julien Ugon 1 year, 8 months ago
Published this.Julien Ugon 1 year, 8 months ago
Gave some feedback: Ready to use
Julien Ugon 1 year, 9 months ago
Created this as a copy of Diffie Hellman Encryption.| Name | Status | Author | Last Modified | |
|---|---|---|---|---|
| Diffie Hellman Encryption | Ready to use | Julien Ugon | 18/09/2023 06:30 | |
| El Gamal Encryption | Ready to use | Julien Ugon | 31/08/2023 13:00 | |
| El Gamal Decryption | Ready to use | Julien Ugon | 18/09/2023 06:23 |
There is one other version that you do not have access to.
| Name | Type | Generated Value |
|---|
| m | number |
53
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| a | integer |
1
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| b | integer |
1
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| c | integer |
-4
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| curve | ecc |
curve(1, 1, -4, 53)
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| p | eccpoint |
point(11, 15,curve(1, 1, -4, 53))
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| q | number |
6
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| na | integer |
4
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| AlicePublic | eccpoint |
point(35, 20,curve(1, 1, -4, 53))
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| Name | Type | Generated Value |
|---|
| Message | eccpoint |
point(18, 4,curve(1, 1, -4, 53))
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| k | integer |
2
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| c1 | eccpoint |
point(35, 33,curve(1, 1, -4, 53))
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| c2 | eccpoint |
point(24, 45,curve(1, 1, -4, 53))
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| Name | Type | Generated Value |
|---|
| MessageDecrypt | eccpoint |
point(18, 4,curve(1, 1, -4, 53))
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Generated value: number
53
This variable doesn't seem to be used anywhere.
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This question is used in the following exam: