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* SM603M-2526PSP01 - Mathematics for Cryptography (INGE-1-NEW-SEM-P, INGE-1-NEW)
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Alice and Bob wich to communicate using the RSA cryptosystem modulo
. The public key of Alice is. What will be her
private key? Your answer should be a number.
Albert and Barnabe exchange information using the RSA cryptosystem. They wish to check their identities using the authentification procedure. Their information is given below. Barnabe receives the ciphered signature
Your answer will be "yes" or "no" (without the inverted commas).
Albert : Barnabe :Albert and Barnabe exchange information using the RSA cryptosystem. They wish to check their identities using the authentification procedure. Their information is given below. Barnabe receives the ciphered signature
Your answer will be "yes" or "no" (without the inverted commas).
Albert : Barnabe :Federico wants to use the RSA cryptosystem and chooses the following data:
, , .
Is his data legitimate ?
Alice and Bob wich to communicate using the RSA cryptosystem modulo
. The public key of Alice is. What will be her
private key? Your answer should be a number.
To communicate between them, Anaïs and Bastien use an alphabet of only ten letters:
a = 0, b = 1, c = 2, d = 3, e = 4, f = 5, g = 6, h = 7, i = 8, j = 9.
To encipher their messages, they decide to use the generalised Vigenère cipher on bigrams.
Bastien receives from Anaïs the ciphertext EGAE
Decipher the message knowing that the enciphering key is
A :
2 1
1 4
B :
2
7
Your answer will be a four letters word written in capital letters with no spaces.
To communicate between them, Anaïs and Bastien use an alphabet of only ten letters:
a = 0, b = 1, c = 2, d = 3, e = 4, f = 5, g = 6, h = 7, i = 8, j = 9.
To encipher their messages, they decide to use the generalised Vigenère cipher on bigrams.
Bastien receives from Anaïs the ciphertext FEGJ
Decipher the message knowing that the enciphering key is
A :
3 2
4 3
B :
4
8
Your answer will be a four letters word written in capital letters with no spaces.