Crypto

baby quick maffs: model the crypto leak, recover the missing secret, and decrypt the flag.

Bank-er-smith: exploit the RSA structure, recover the missing secret, and decrypt the flag.

BBGun06: exploit the RSA structure, recover the missing secret, and decrypt the flag.

Bloom Bloom: abuse the AES misuse, derive the missing key material, and decrypt the flag.

Brainy's Chyper: exploit the RSA structure, recover the missing secret, and decrypt the flag.

Classic, yet complicated: recover the Vigenere key from the ciphertext, decrypt the message, and verify the flag.

ElElGamal: use the curve leak or invalid-curve path to recover the secret and decrypt the flag.

Fast Carmichael: use the curve leak or invalid-curve path to recover the secret and decrypt the flag.

How The Columns Have Turned: model the crypto leak, recover the missing secret, and decrypt the flag.

I know Mag1k: derive the XOR key stream, invert the transform, and recover the flag.

I'm gRoot: reduce the hash constraint to a small search, test candidates, and recover the flag.

Iced Tea: abuse the AES misuse, derive the missing key material, and decrypt the flag.

Android-in-the-Middle: abuse the AES misuse, derive the missing key material, and decrypt the flag.

Signing Factory: reconstruct the PRNG state from the leak, replay it, and recover the flag.