Unverified50% confidenceFactExact time
iMessage 使用椭圆曲线 Diffie-Hellman（ECDH）协商会话密钥，以 AES-128-CTR 模式加密消息正文，并采用 ECDSA 算法签名防篡改
1
Sources
50%
Confidence
Long-term
Relevance
7/13/2026
First Seen
Sources
Related Claims
UnverifiedSignal、WhatsApp、iMessage等主流通讯应用采用端到端加密技术，其数学基础通常是非对称密钥体系如椭圆曲线Diffie-Hellman密钥交换69% similarUnverifiedSignal协议综合运用基于Curve25519的椭圆曲线Diffie-Hellman密钥交换与AES-256对称加密69% similarUnverifiedEspa uses bank-grade encryption (typically referring to the AES-256 encryption standard) to protect user data.66% similar
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