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 Jan 31 comment Is it ok to send part of digital signature if we have bandwidth constraints? @RickyDemer Why MAC is preferred? Since we can have public/private key work in this case. Jan 31 comment Is it ok to send part of digital signature if we have bandwidth constraints? Recreate the signature and check whether the part is equal. Jan 31 asked Is it ok to send part of digital signature if we have bandwidth constraints? Jan 31 comment How to specify last $t$ bits are only sent when a signature is sent? @CodesInChaos Is it possible to send only a part of signature? Like 16 bits? Jan 29 asked How to specify last $t$ bits are only sent when a signature is sent? Jan 26 awarded Nice Question Jan 26 asked Does changing the random number selected for each message increase security in Schnorr's scheme? Jan 26 asked Factorization or discrete logarithm is difficult for an attacker? Jan 11 awarded Popular Question Jan 2 comment How can I solve congruence modulo N? Yes. It was my mistake Jan 2 revised How can I solve congruence modulo N? added 3 characters in body Jan 1 comment How can I solve congruence modulo N? Values of $J_A$ and $e$ are known. I am using example from GQ signature scheme from the book Page 451 cacr.uwaterloo.ca/hac/about/chap11.pdf Jan 1 asked How can I solve congruence modulo N? Dec 28 awarded Commentator Dec 28 comment How to select parameters based on some condition Random is the accepted method? Whether RSA uses random method? Dec 28 asked How to select parameters based on some condition Dec 27 awarded Benefactor Dec 27 accepted Shadowed identity in cryptography Dec 27 comment Shadowed identity in cryptography Using the same example from the text, when I took $modularpow(J,phi−s,n)$, I am getting the value as -126739. I have J=34579, phi= 419184, s=233875 and n=420491 Dec 27 comment Shadowed identity in cryptography One last question. There is an equation in the text "$s_A=(J_A)^{−s}mod\ n$". How could I calculate that? Taking $(J_A)^{−s}$ and taking mod n?