How to use futoin-hkdf - 6 common examples
To help you get started, we’ve selected a few futoin-hkdf examples, based on popular ways it is used in public projects.
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bandprotocol / libra-web / packages / libra-web-core-utils / crypto / Hkdf.ts View on Github 
public expand(prk: Uint8Array, info: string, outputLen: number): Uint8Array {
const prkBuffer = Buffer.from(prk)
const okm = hkdf.expand(this.hashAlgorithm, this.hashLength, prkBuffer, outputLen, info)
return new Uint8Array(okm)
}public expand(prk: Uint8Array, info: BuffString, outputLen: number): Uint8Array {
const prkBuffer = Buffer.from(prk);
const okm = this.hashAlgorithm.toLowerCase() === 'sha3-256'
? this.sha3_256Expand(prkBuffer, outputLen, info)
: hkdf.expand(this.hashAlgorithm, this.hashLength, prkBuffer, outputLen, info)
return new Uint8Array(okm);
}public extract(ikm: Uint8Array, salt: string): Uint8Array {
const ikmBuffer = Buffer.from(ikm)
const prk = hkdf.extract(this.hashAlgorithm, this.hashLength, ikmBuffer, salt)
return new Uint8Array(prk)
}public extract(ikm: Uint8Array, salt: string): Uint8Array {
const ikmBuffer = Buffer.from(ikm);
const prk = this.hashAlgorithm.toLowerCase() === 'sha3-256'
? this.sha3_256Extract(ikmBuffer, salt)
: hkdf.extract(this.hashAlgorithm, this.hashLength, ikmBuffer, salt)
return new Uint8Array(prk);
}get hashLength(): number {
return hkdf.hash_length(this.hashAlgorithm);
}
}get hashLength(): number {
return hkdf.hash_length(this.hashAlgorithm)
}
}futoin-hkdf
RFC5869: HMAC-based Extract-and-Expand Key Derivation Function (HKDF)
