Shamir’s attack on RSA with low decryption exponent

E195493

Shamir’s attack on RSA with low decryption exponent is a cryptanalytic method that exploits unusually small private exponents in RSA to efficiently recover the secret key and break the encryption.

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Statements (30)

Predicate Object
instanceOf attack on RSA ⓘ
cryptanalytic attack ⓘ
mathematical attack ⓘ
appliesWhen RSA private exponent d is unusually small relative to modulus N ⓘ
assumes RSA modulus is known ⓘ
public exponent is known ⓘ
basedOn Diophantine approximation techniques ⓘ
lattice-based methods ⓘ
complexity polynomial time under its parameter assumptions ⓘ
countermeasure choose sufficiently large private exponent d ⓘ
follow recommended RSA key-size and exponent guidelines ⓘ
describedIn research on attacks against low-exponent RSA ⓘ
developedBy Adi Shamir ⓘ
exploits low RSA decryption exponent ⓘ
small private exponent in RSA ⓘ
field cryptanalysis ⓘ
public-key cryptography ⓘ
goal break RSA encryption ⓘ
recover RSA private key ⓘ
improvesOn Wiener’s attack on RSA ⓘ
input RSA public key (N,e) ⓘ
involves continued fractions and lattice techniques ⓘ
number theory ⓘ
output RSA private exponent d ⓘ
factorization of RSA modulus N ⓘ
relatedTo Wiener’s attack on RSA ⓘ
riskFactorFor RSA implementations using small private exponents for efficiency ⓘ
securityImplication RSA key generation must avoid low decryption exponents ⓘ
RSA with very small private exponent is insecure ⓘ
targets RSA cryptosystem ⓘ
linked to: RSA

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Adi Shamir → knownFor → Shamir’s attack on RSA with low decryption exponent ⓘ