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20 lines
777 B
Go
20 lines
777 B
Go
/*
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Package x25519 provides Diffie-Hellman functions as specified in RFC-7748.
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Validation of public keys.
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The Diffie-Hellman function, as described in RFC-7748 [1], works for any
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public key. However, if a different protocol requires contributory
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behaviour [2,3], then the public keys must be validated against low-order
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points [3,4]. To do that, the Shared function performs this validation
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internally and returns false when the public key is invalid (i.e., it
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is a low-order point).
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References:
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- [1] RFC7748 by Langley, Hamburg, Turner (https://rfc-editor.org/rfc/rfc7748.txt)
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- [2] Curve25519 by Bernstein (https://cr.yp.to/ecdh.html)
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- [3] Bernstein (https://cr.yp.to/ecdh.html#validate)
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- [4] Cremers&Jackson (https://eprint.iacr.org/2019/526)
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*/
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package x25519
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