Known Plaintext Attacks on Time Series Encryption

Time series data has properties that make standard encryption dangerously insufficient. This paper analyzes known plaintext attack vulnerabilities in time series encryption schemes and shows how naive approaches leak structure even when the ciphertext looks opaque. The Time Series Problem Time series data is special in ways that matter for cryptography. Adjacent values are statistically dependent (temporal correlation). Daily, weekly, and seasonal cycles create periodic patterns. Future values a