package kdf

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

Install

sha256=d161582b0efe66d958dd6b8c9c21068e9f6454ce218377d6cf87823dec62e0ce

sha512=8c518494a7c2e030c079a22fc0d27e4dccd1b2d6edb8fcd2ee7121cdd3d56ff416a37876b6bb13b8be015922c3487536038373bfa0934a165055c1cb5dd3c2e1

RFC 2898 specifies two password-based key derivation functions (PBKDF1 and PBKDF2), which are abstracted over a specific hash/pseudorandom function.

val pbkdf1 : 
  password:string ->
  salt:string ->
  count:int ->
  dk_len:int ->
  string

pbkdf1 password salt count dk_len is dk, the derived key of dk_len octets. The salt must be eight octets, count the iteration count.

raises Invalid_argument
when either salt is not eight octets long or either count or dk_len are not valid.

val pbkdf2 : 
  password:string ->
  salt:string ->
  count:int ->
  dk_len:int32 ->
  string

pbkdf2 password salt count dk_len is dk, the derived key of dk_len octets.