This is an index of the CTF solutions I have published on my blog. Most of them are complete.

Equation (2 points)
RSA? (2 points)

Collision course (350 points)
Baby (200 points)

Hyper RSA (500 points)

HMAC_CRC (5 points)

b3s23

A few collected solutions

Crypto 60 (60 points)
Crypto 50 (50 points)

Threat tier

Toil33t (400 points)

Tonerre (200 points)

Curious (70 points)
Strength (110 points)

Space Friends (200 points)
Schensted (110 points)
Ed25519 (40 points)

Secure Auth (150 points)
Hash'n'bake (200 points)
Pet Padding Inc. (150 points)

####2016 Palindrome (30 points)
Twin Primes (50 points)
Super Express (100 points)
Pinhole Attack (500 points)

###VolgaCTF

XXY (300 points)
Lazy (250 points)