Verified75% confidenceFactExact time
ECDH achieves with a 256-bit key the same security strength as RSA with a 3072-bit key.
5
Sources
75%
Confidence
Long-term
Relevance
7/13/2026
First Seen
Sources
Related Claims
UnverifiedEd25519 is based on the elliptic curve Curve25519 and achieves security strength comparable to RSA-3072 with only 256 bits, and has become the recommended default SSH key option.78% similarVerifiedSM2 is based on elliptic-curve cryptography (ECC) with a key length of 256 bits; its security is equivalent to RSA-2048 but with higher computational efficiency, and it is commonly used for digital signatures and key exchange75% similarUnverifiedTLS 1.3使用基于椭圆曲线的ECDHE变体，256位椭圆曲线密钥提供相当于3072位RSA密钥的安全强度74% similarUnverifiedSSH密钥认证基于RSA（依赖大整数分解难题）或Ed25519（基于椭圆曲线离散对数难题）算法，私钥永远不离开本地设备66% similar
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