Shared-Key Signature

Question

I know that most uses of cryptographic signatures are with public/private keys, but I need to sign information using a pre-shared key. I know I can just encrypt the data, but I prefer signing it..

Is it possible in C#?

score 2 · Accepted Answer · edited May 23 '17 at 12:27

2

HMAC is the usual shared key signing algorithm, and it is doable in c#

How to generate HMAC-SHA1 in C#?

edited May 23 '17 at 12:27

Community

1
1

answered Nov 27 '12 at 13:53

jbtule

31,383
12
95
128

score 0 · Answer 2 · edited May 23 '17 at 12:18

0

there are plenty of schemes (involving HMAC) to perform message signature with symmetric (pre-shared) key material.

possible duplicate:

Using symmetric key (AES -128) to sign and verify a message

edited May 23 '17 at 12:18

Community

1
1

answered Nov 27 '12 at 13:49

Gianluca Ghettini

11,129
19
93
159

Thanks. Close question, but I asked for C# implementation, while he asked for Java - So I don't believe it's a duplicate. – Roy Reznik Nov 27 '12 at 13:52

Shared-Key Signature

2 Answers2