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Curve25519
Curve25519 is an elliptic curve offering 128 bits of security and designed for use with the elliptic curve Diffie–Hellman (ECDH) key agreement scheme. It is one of the fastest ECC curves, it is not covered by any known patents, and it avoids problems with poor quality random-number-generators.〔
== Popularity ==
Curve25519 was first released by Daniel J. Bernstein in 2005, but interest increased considerably after 2013 when it was discovered that the NSA had backdoored Dual EC DRBG. While not directly related, (suspicious aspects of the NIST's P curve constants ) led to concerns that the NSA had chosen values that gave them an advantage in factoring public keys,I no longer trust the constants. I believe the NSA has manipulated them through their relationships with industry. – Bruce Schneier, prominent security researcher Since then, Curve25519 has become the de-facto alternative to P-256. In 2014 OpenSSH defaults to Curve25519-based ECDH.
抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』
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