Unverified50% confidenceFactExact time
Frequency analysis was first systematically recorded by the 9th-century Arab polymath Al-Kindi in 'A Manuscript on Deciphering Cryptographic Messages'.
1
Sources
50%
Confidence
Long-term
Relevance
10/14/2026
First Seen
Sources
Related Entities
Related Claims
UnverifiedTEMPEST计划起源于二战后期发现信号放大器处理加密电报时产生可截获的电磁辐射，冷战期间由NSA系统化，相关文件直至1995年才部分解密57% similarUnverifiedThe principle of timing attacks can be traced back to a 1996 cryptography paper by Paul Kocher, in which he demonstrated that private keys could be inferred by measuring tiny timing differences in RSA decryption operations.55% similarUnverifiedThe core feature of Behinder (冰蝎) is AES-encryption-based traffic obfuscation, with its communication key hardcoded by default in the shell file.54% similarUnverifiedRecall 早期版本的数据库加密机制被安全研究员发现存在漏洞52% similarUnverifiedCrypto AG was a Swiss encryption equipment manufacturer secretly controlled by the U.S. CIA and Germany's BND; its encryption devices were deliberately implanted with backdoors, enabling Western intelligence agencies to read the encrypted communications of more than 120 countries — a case that was exposed in 2020.51% similar
Cite This Claim
Stable URI
https://kongchang.com/claim/1027603API
curl https://kongchang.com/api/v1/knowledge/claims/1027603MCP
get_claim(id=1027603)