Import std.crypto.derive

Hkdf

std.crypto.derive

struct

Public Struct Hkdf

HKDF (RFC 5869): length bytes of new key from material, a secret like a shared one from X25519, with salt, which can be empty, and info, which says what the key is for, so keys for different uses differ.

Examples

Local shared = SecureRandom.Bytes(32)
Local key = Hkdf.Sha256(shared, [], "session keys".Bytes, 32)
Expect(key.Count == 32)
Expect(key == Hkdf.Sha256(shared, [], "session keys".Bytes, 32))

std/crypto/derive.fb, line 72

@PanicsAtCaller Public Static Method Sha256(material: UInt8[], salt: UInt8[], info: UInt8[], length: Int): UInt8[] static method #

length bytes of key from material, salt, and info, by HMAC-SHA256. Panics unless length is from 0 to 8160, 255 hashes.
@PanicsAtCaller Public Static Method Sha512(material: UInt8[], salt: UInt8[], info: UInt8[], length: Int): UInt8[] static method #

length bytes of key from material, salt, and info, by HMAC-SHA512. Panics unless length is from 0 to 16320, 255 hashes.

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