Expired50% confidenceFactTime unknown
The core encryption logic of Tencent's slider CAPTCHA is located in the tdcgs file, and the CO value encryption call chain is: o.getTCDData() → URL decode → obtain the CO ciphertext value.
1
Sources
50%
Confidence
Medium-term (~90 days)
Relevance
7/2/2026
First Seen
Valid until: 9/30/2026(expired)
Sources
Related Claims
UnverifiedThe CO value in Tencent's slider CAPTCHA is the core encrypted ciphertext, generated by local JS, with a length of approximately 1,600–1,700 characters.70% similarUnverified子代理提示词加密可采用传输层加密（TLS/mTLS）、应用层加密（AES-256）或令牌化混淆等方案66% similarUnverifiedIn Tencent's slider CAPTCHA request flow, the EKS value is extracted from the TDC.js file and used as the encryption key.65% similarUnverifiedThe core encryption logic of H5ST resides in the sign method of an object named _pdp, which is mounted on window.ParamsSign.64% similarUnverifiedConfidential computing creates encrypted Trusted Execution Environments (TEEs) at the hardware level, ensuring that data remains under encryption protection throughout the entire process of use64% similar
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