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36 lines
1.9 KiB
36 lines
1.9 KiB
import { type CHash, type Input } from './utils.ts'; |
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/** |
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* HKDF-extract from spec. Less important part. `HKDF-Extract(IKM, salt) -> PRK` |
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* Arguments position differs from spec (IKM is first one, since it is not optional) |
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* @param hash - hash function that would be used (e.g. sha256) |
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* @param ikm - input keying material, the initial key |
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* @param salt - optional salt value (a non-secret random value) |
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*/ |
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export declare function extract(hash: CHash, ikm: Input, salt?: Input): Uint8Array; |
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/** |
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* HKDF-expand from the spec. The most important part. `HKDF-Expand(PRK, info, L) -> OKM` |
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* @param hash - hash function that would be used (e.g. sha256) |
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* @param prk - a pseudorandom key of at least HashLen octets (usually, the output from the extract step) |
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* @param info - optional context and application specific information (can be a zero-length string) |
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* @param length - length of output keying material in bytes |
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*/ |
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export declare function expand(hash: CHash, prk: Input, info?: Input, length?: number): Uint8Array; |
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/** |
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* HKDF (RFC 5869): derive keys from an initial input. |
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* Combines hkdf_extract + hkdf_expand in one step |
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* @param hash - hash function that would be used (e.g. sha256) |
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* @param ikm - input keying material, the initial key |
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* @param salt - optional salt value (a non-secret random value) |
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* @param info - optional context and application specific information (can be a zero-length string) |
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* @param length - length of output keying material in bytes |
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* @example |
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* import { hkdf } from '@noble/hashes/hkdf'; |
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* import { sha256 } from '@noble/hashes/sha2'; |
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* import { randomBytes } from '@noble/hashes/utils'; |
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* const inputKey = randomBytes(32); |
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* const salt = randomBytes(32); |
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* const info = 'application-key'; |
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* const hk1 = hkdf(sha256, inputKey, salt, info, 32); |
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*/ |
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export declare const hkdf: (hash: CHash, ikm: Input, salt: Input | undefined, info: Input | undefined, length: number) => Uint8Array; |
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//# sourceMappingURL=hkdf.d.ts.map
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