feat: implement LCG nonce detection

[oritwoen]

Description

Detect nonces generated using Linear Congruential Generators (LCG).

Background

Some implementations use weak PRNGs like LCG for nonce generation. LCG outputs follow predictable patterns: k_{n+1} = (a * k_n + c) mod m. Once detected, the sequence can be predicted and private keys recovered.

Requirements

• Detect LCG patterns in nonce sequences
• Recover LCG parameters (a, c, m)
• Predict future/past nonces
• Recover private keys from predicted nonces

Technical Notes

• Requires multiple signatures from same key
• May need lattice techniques for partial state recovery
• Consider common LCG parameters (glibc, MINSTD, etc.)