From Bitcoin to AWS: How Domain Separators Fix Decades of Cryptographic Signing Flaws

Cryptographic signing has a long-standing vulnerability where structurally similar data can be misinterpreted as different types, enabling signature forgery attacks across Bitcoin, Ethereum, TLS, JWT, and AWS. This isn't a theoretical risk—it's a documented pattern of real-world exploits. FOKS's Snowpack framework proposes a systematic solution by embedding cryptographic domain separators directly into interface definition languages (IDLs), making type confusion attacks impossible at the serialization level.