package kdf

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Key Derivation Functions: HKDF RFC 5869, PBKDF RFC 2898, SCRYPT RFC 7914

Install

sha256=d161582b0efe66d958dd6b8c9c21068e9f6454ce218377d6cf87823dec62e0ce

sha512=8c518494a7c2e030c079a22fc0d27e4dccd1b2d6edb8fcd2ee7121cdd3d56ff416a37876b6bb13b8be015922c3487536038373bfa0934a165055c1cb5dd3c2e1

RFC 5869 specifies a HMAC-based Extract-and-Expand Key Derivation Function (HKDF), which is abstracted over a specific hash function.

Sourcemodule type S = sig ... end

Sourcemodule Make (H : Digestif.S) : S

Given a Hash function, get the HKDF

Sourceval extract : hash:Digestif.hash' -> ?salt:string -> string -> string

convenience extract hash salt ikm where the hash has to be provided explicitly

Sourceval expand : hash:Digestif.hash' -> prk:string -> ?info:string -> int -> string

convenience expand hash prk info len where the hash has to be provided explicitly