As we know about Shor's algorithm on quantum computers it is possible to crack RSA / ECC easily if we have enough qubits.

Is it possible to crack RSA / ECC on a quantum computer if we only have ciphertext and don't have the public key used to encrypt itself?

Does it matter if we have many ciphertexts that are generated using the same public key?

As we know about Shor's algorithm on quantum computers it is possible to crack RSA / ECC easily if we have enough qubits.

Is it possible to crack RSA / ECC on a quantum computer if we only have ciphertext and don't have the public key used to encrypt itself?

Does it matter if we have many ciphertexts and corresponding plaintext for some of them that are generated using the same public key?

As we know using Shor's algorithm on the quantum we can crack RSA/ECC easily if we have enough qubits

my questions

1. is it possible to crack RSA/ECC on a quantum computer if we only have ciphertext and don't have the public key used to encrypt itself

2. if the answer to 1 is no, does it differ if we have many ciphertexts that are generated using the same public key

3. (comment me to remove this if it should be asked in another topic separately): as I know there are >10 attacks on RSA, do any of these attacks work without even having public-key on a classical or quantum computer

As we know about Shor's algorithm on quantum computers it is possible to crack RSA  / ECC easily if we have enough qubits.

Is it possible to crack RSA / ECC on a quantum computer if we only have ciphertext and don't have the public key used to encrypt itself?

Does it matter if we have many ciphertexts that are generated using the same public key?

as we know using shor's algorithm on quantum we can crack rsa/ecc easily if we have enough qbits

my questions

1-is it possible to crack rsa/ecc on quantum computer if we only have ciphertext and don't have the public-key used to encrypt itself

2-if the answer to 1 is no , does it differ if we have many ciphertexts that are generated using the same publickey

3-(comment me to remove this if it should be asked in other topic separately) :as i know there are >10 attacks on rsa ,does any of these attacks work without even having public-key on a classical or quantum computer

As we know using Shor's algorithm on the quantum we can crack RSA/ECC easily if we have enough qubits

my questions

1. is it possible to crack RSA/ECC on a quantum computer if we only have ciphertext and don't have the public key used to encrypt itself

2. if the answer to 1 is no, does it differ if we have many ciphertexts that are generated using the same public key

3. (comment me to remove this if it should be asked in another topic separately): as I know there are >10 attacks on RSA, do any of these attacks work without even having public-key on a classical or quantum computer